Eccentric and rod hi-res stock photography and images - Page 3

. American engineer and railroad journal . rone being connected to a combination lever and the inner oneby a cross head connection to the valve stem, which is sup-ported and guided by a bearing resting on the top guide bar.Two reverse shafts are required in the design, the forward onebeing supported in bearings bolted to the guide yoke and theother one, which connects to the reverse lever, resting on theframe. It will be noticed that the eccentric rod connects to thelink at a point which gives a shorter leverage than has beencommon in previous designs, and hence requires less eccentricityin th Stock Photo

RM2CRDKRF–. American engineer and railroad journal . rone being connected to a combination lever and the inner oneby a cross head connection to the valve stem, which is sup-ported and guided by a bearing resting on the top guide bar.Two reverse shafts are required in the design, the forward onebeing supported in bearings bolted to the guide yoke and theother one, which connects to the reverse lever, resting on theframe. It will be noticed that the eccentric rod connects to thelink at a point which gives a shorter leverage than has beencommon in previous designs, and hence requires less eccentricityin th

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . theloose bolts. The eccentric rod looseon the strap will show excessive lostmotion and will be found by close in-spection. A broken valve yoke willshow by the valve being pushed overto the forward end of its stroke and notreturning if the yoke is broken close tothe stem, or if broken on both ends ofthe valve. If broken on one side thespringing of the yoke will cause the ;:lve to be late ni travel, like thatcaused by excessive lost motion, and iftb.e inspection of the valve gear showsit to be Stock Photo

RM2CGY6K9–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . theloose bolts. The eccentric rod looseon the strap will show excessive lostmotion and will be found by close in-spection. A broken valve yoke willshow by the valve being pushed overto the forward end of its stroke and notreturning if the yoke is broken close tothe stem, or if broken on both ends ofthe valve. If broken on one side thespringing of the yoke will cause the ;:lve to be late ni travel, like thatcaused by excessive lost motion, and iftb.e inspection of the valve gear showsit to be

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . eappropriately shaded so as to be easilypicked out as separate articles. Fig. i ispurposely made out of proportion to showthe parts. The drawings show the gearas arranged for an ordinary slide valvehaving, as such valves usually have, out-side admission. The return crank A in Fig. i operatesan eccentric rod B and the point C atthe end of the eccentric rod is supported PEVERSINOSHAFT point P is another fixed point on the mo-tion. The point Q at the lower end ofthe vertical arm of this bell cra Stock Photo

RM2CR3TT7–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . eappropriately shaded so as to be easilypicked out as separate articles. Fig. i ispurposely made out of proportion to showthe parts. The drawings show the gearas arranged for an ordinary slide valvehaving, as such valves usually have, out-side admission. The return crank A in Fig. i operatesan eccentric rod B and the point C atthe end of the eccentric rod is supported PEVERSINOSHAFT point P is another fixed point on the mo-tion. The point Q at the lower end ofthe vertical arm of this bell cra

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . Eccentric Rod Cc:ilral Liue of Motion. FIG. 15. WALSCHAERT VALVE GEAR. courts. In this case we think that the rail-road company will have to pay fair dam-ages or let the water run without interrup-tion. The aggregate length of the railways ofthe United States is 193.000 miles. Themileage of our railways i:. six times greaterthan that of any other country, and manythousands of miles longer than all therailroads of Europe put together. Whilethe United States occupies but 6 per cent.of the land Stock Photo

RM2CGXJRP–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . Eccentric Rod Cc:ilral Liue of Motion. FIG. 15. WALSCHAERT VALVE GEAR. courts. In this case we think that the rail-road company will have to pay fair dam-ages or let the water run without interrup-tion. The aggregate length of the railways ofthe United States is 193.000 miles. Themileage of our railways i:. six times greaterthan that of any other country, and manythousands of miles longer than all therailroads of Europe put together. Whilethe United States occupies but 6 per cent.of the land

. The steam-engine and other heat-motors . es closer to Df and when d is at an infinitedistance the arc becomes the straight line Df. With an infinite rod the travel is therefore fA =R-R cos 0. The equation for a finite rod gives the same result whena =0 and L= oo. Fig. 56 shows a crank-pin working in a yoke; the motionproduced is equivalent to that which would be produced by atheoretical rod of infinite length. It is used in some forms of VALVE-DIAGRAMS AND SLIDE-VALVES. 87 steam-pumps. It is usual to consider the eccentric-rod as a rodof infinite length, as it is often forty times the eccent Stock Photo

RM2CDB6JP–. The steam-engine and other heat-motors . es closer to Df and when d is at an infinitedistance the arc becomes the straight line Df. With an infinite rod the travel is therefore fA =R-R cos 0. The equation for a finite rod gives the same result whena =0 and L= oo. Fig. 56 shows a crank-pin working in a yoke; the motionproduced is equivalent to that which would be produced by atheoretical rod of infinite length. It is used in some forms of VALVE-DIAGRAMS AND SLIDE-VALVES. 87 steam-pumps. It is usual to consider the eccentric-rod as a rodof infinite length, as it is often forty times the eccent

. American engineer and railroad journal . into place, which forms a bearing for the eccentric rodbrass. This method of fastening the crank to the main pin per*mits it to be removed if desirable by simply driving out thesingle binding bolt. The eccentric rod is wrought iron and is fitted at the backend with a split brass bearing arranged with a wedge and ad-justing screw for taking up wear. The forward end is in theform of a jaw for connection to the bottom of the link. Thisconnection is made by a I-H in. pin. with taper fits in the rodand a counter sunk head on the inner side. The pin and the Stock Photo

RM2CH352E–. American engineer and railroad journal . into place, which forms a bearing for the eccentric rodbrass. This method of fastening the crank to the main pin per*mits it to be removed if desirable by simply driving out thesingle binding bolt. The eccentric rod is wrought iron and is fitted at the backend with a split brass bearing arranged with a wedge and ad-justing screw for taking up wear. The forward end is in theform of a jaw for connection to the bottom of the link. Thisconnection is made by a I-H in. pin. with taper fits in the rodand a counter sunk head on the inner side. The pin and the

. American engineer . fiocf Long . ^-xy / f?oci Short Fig. 5—Adjustment of Eccentric Rod. of the valve and parts. It shows the long port opening and thefree exhaust obtaining at full gear. Diagram No. 2, Fig. 3, showsthe valve ellipse for full gear plotted from the kinematic dia-gram. There are tliree points to be noted. (1) That the portis fully opened when the piston has traveled 14 per cent, of itsstroke and that this occurs so rapidly that the effect of pre-admission due to the ;4 inch lead is practically eliminated. (2)That there is a dwell of about 35 per cent, on the full port open- in Stock Photo

RM2CGW3P2–. American engineer . fiocf Long . ^-xy / f?oci Short Fig. 5—Adjustment of Eccentric Rod. of the valve and parts. It shows the long port opening and thefree exhaust obtaining at full gear. Diagram No. 2, Fig. 3, showsthe valve ellipse for full gear plotted from the kinematic dia-gram. There are tliree points to be noted. (1) That the portis fully opened when the piston has traveled 14 per cent, of itsstroke and that this occurs so rapidly that the effect of pre-admission due to the ;4 inch lead is practically eliminated. (2)That there is a dwell of about 35 per cent, on the full port open- in

. The steam-engine and other heat-motors . Fig. 213. Fig. 214. Gravity.—The effect of gravity on the reciprocating parts: 1. Will be called zero in horizontal engines; 2. In vertical engines, will be classed as one of the forces acting through the eccentric-rod as above;The effect of gravity on the rotating parts: 1. The attraction of gravitation being constant the forcedue to the weight of the rotating parts is constant; 2. The lever-arm of this force will vary from a maximumpositive, equal to the radius sG, through zero to a maximumnegative equal to —sG and back again during the next semi-re Stock Photo

RM2CD9W22–. The steam-engine and other heat-motors . Fig. 213. Fig. 214. Gravity.—The effect of gravity on the reciprocating parts: 1. Will be called zero in horizontal engines; 2. In vertical engines, will be classed as one of the forces acting through the eccentric-rod as above;The effect of gravity on the rotating parts: 1. The attraction of gravitation being constant the forcedue to the weight of the rotating parts is constant; 2. The lever-arm of this force will vary from a maximumpositive, equal to the radius sG, through zero to a maximumnegative equal to —sG and back again during the next semi-re

. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled 'Mechanical movements, powers and devices' ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 184. THE STEVENSVALVE GEAR. Showingthe double toe and wipers wdththe eccentric rod unhooked.Type used on the Hudson Riversteamers. First used in 1840.A standard type for marine walk-ing-beam engines.. 185. VALVE GEAR. A wrist plate joumaled on a pin carriedby a standa Stock Photo

RM2CEH9X4–. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled 'Mechanical movements, powers and devices' ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 184. THE STEVENSVALVE GEAR. Showingthe double toe and wipers wdththe eccentric rod unhooked.Type used on the Hudson Riversteamers. First used in 1840.A standard type for marine walk-ing-beam engines.. 185. VALVE GEAR. A wrist plate joumaled on a pin carriedby a standa

. Railway mechanical engineer . types of outside gear.It is obtained in the Southern gear by using the eccentric rod,.IHC, as a lever. The fulcrum is at B, and the distance r-y,traced by the point C on the ellipses, equals the total lap plustwice the lead. In order to obtain this movement, it is neces-sary to so proportion the eccentric rod that the lengths AB andI^C are in the same ratio as are the diameter of the return crankcircle and the total lap plus twice the lead. The diagram show-s the main crank pin on the front deadcenter, position Ao. /. The valve is then displaced 1-5/32 in.ahead Stock Photo

RM2CH3YRA–. Railway mechanical engineer . types of outside gear.It is obtained in the Southern gear by using the eccentric rod,.IHC, as a lever. The fulcrum is at B, and the distance r-y,traced by the point C on the ellipses, equals the total lap plustwice the lead. In order to obtain this movement, it is neces-sary to so proportion the eccentric rod that the lengths AB andI^C are in the same ratio as are the diameter of the return crankcircle and the total lap plus twice the lead. The diagram show-s the main crank pin on the front deadcenter, position Ao. /. The valve is then displaced 1-5/32 in.ahead

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . sion pistonvalves. The lettering indicates the namesof the various parts. .A indicating thevalve, R the valve stem. C the coml)ina-tion lever, D the crosshead link, E theradius rod. F the reverse shaft. G thelifting link. H the reach rod. K the re- 78 RAILWAY AND LOCOMOTIVE ENGINEERING. March. 1917. verse Itvcr, L the oscillating or reverselink, M the eccentric rod, N the eccentriccrank. The reverse lever is in the mid-dle position, with the link block in thecenter of the link. In the adjustm Stock Photo

RM2CH3RXB–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . sion pistonvalves. The lettering indicates the namesof the various parts. .A indicating thevalve, R the valve stem. C the coml)ina-tion lever, D the crosshead link, E theradius rod. F the reverse shaft. G thelifting link. H the reach rod. K the re- 78 RAILWAY AND LOCOMOTIVE ENGINEERING. March. 1917. verse Itvcr, L the oscillating or reverselink, M the eccentric rod, N the eccentriccrank. The reverse lever is in the mid-dle position, with the link block in thecenter of the link. In the adjustm

RM2CETCNT–. The steam-engine and other heat-motors. Fig. 213. Fig. 214. Gravity.—The effect of gravity on the reciprocating parts: 1. Will be called zero in horizontal engines; 2. In vertical engines, will be classed as one of the forces acting through the eccentric-rod as above;The effect of gravity on the rotating parts: 1. The attraction of gravitation being constant the forcedue to the weight of the rotating parts is constant; 2. The lever-arm of this force will vary from a maximumpositive, equal to the radius sG, through zero to a maximumnegative equal to — sG and back again during the next semi-re

. Railway mechanical engineer . FEniiLi.AkY, 1915 RAILWAY AGI-: GAZETTE, MliCIIANICAL EDITION distance Ijutwccii the ends is a niaxinnnii. Iur full gear Ijack-vvard mcjtion, the front end of the arc is above the back endan equal vertical distance. As the reverse lever is moved to-ward the center, the arc approaches a position tangent to ahorizontal line, and at niidstruUe the front and back ends of thearc arc on a horizontal line. Here the arc has no effect uponthe movement of the valve, its motion being derived from thelever action of the eccentric rod, as was explained in a previousl)aragrap Stock Photo

RM2CH3XTK–. Railway mechanical engineer . FEniiLi.AkY, 1915 RAILWAY AGI-: GAZETTE, MliCIIANICAL EDITION distance Ijutwccii the ends is a niaxinnnii. Iur full gear Ijack-vvard mcjtion, the front end of the arc is above the back endan equal vertical distance. As the reverse lever is moved to-ward the center, the arc approaches a position tangent to ahorizontal line, and at niidstruUe the front and back ends of thearc arc on a horizontal line. Here the arc has no effect uponthe movement of the valve, its motion being derived from thelever action of the eccentric rod, as was explained in a previousl)aragrap

. Railway mechanical engineer . de valvegear for locomotives having an eccentric rod driven by a returncrank and constrained at an intermediate point by a radiushanger suspended by a curved guide, the free end of the eccen-tric rod being operatively connected to a bell-crank sustainedby the guide yoke. This was described by Charles Brown onpage 271 of the October 1, 1880, issue of Engineering (Lctndon).A description of a similar gear prepared by the writer waspublislii-d in tlic RiiUrond Ca::cltc, issue of May 20, 1903, page termined, the points F and /• showing the location of the radiushange Stock Photo

RM2CGYE6W–. Railway mechanical engineer . de valvegear for locomotives having an eccentric rod driven by a returncrank and constrained at an intermediate point by a radiushanger suspended by a curved guide, the free end of the eccen-tric rod being operatively connected to a bell-crank sustainedby the guide yoke. This was described by Charles Brown onpage 271 of the October 1, 1880, issue of Engineering (Lctndon).A description of a similar gear prepared by the writer waspublislii-d in tlic RiiUrond Ca::cltc, issue of May 20, 1903, page termined, the points F and /• showing the location of the radiushange

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . so thatthe journals can roll on level straightedges, the crank pin nuts and washers tobe in place. On the main wheels of out-side hung valve gear engines both ec-centric cranks must be in place. On theopposite side to the one being weigheda weight equal to the weight of the backend of the eccentric rod must be hungon the eccentric crank pin. The crankpin on ihe opposite side from the one be-ing weighed should be above and in verti-cal line drawn through the center of theaxle. Hang weights on Stock Photo

RM2CH29XN–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . so thatthe journals can roll on level straightedges, the crank pin nuts and washers tobe in place. On the main wheels of out-side hung valve gear engines both ec-centric cranks must be in place. On theopposite side to the one being weigheda weight equal to the weight of the backend of the eccentric rod must be hungon the eccentric crank pin. The crankpin on ihe opposite side from the one be-ing weighed should be above and in verti-cal line drawn through the center of theaxle. Hang weights on

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . DIAGRAM BAKER-PILLIOD GEAR by a link, D, which hangs from the shortarm of a bell crank, E E. The lower endof the bell crank E receives its motionfrom the crosshead. The pivot point ofthis bell crank is a fixed point. Thecrosshead motion causes the link D torise and fall, and the eccentric-rod mo- SKELETON SKETCH porting point of yoke J is K, which is afixed point in the motion. The top of thereverse yoke point H is shifted by themovement of the reverse yoke J, and thisis accomplished by the r Stock Photo

RM2CR3TR2–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . DIAGRAM BAKER-PILLIOD GEAR by a link, D, which hangs from the shortarm of a bell crank, E E. The lower endof the bell crank E receives its motionfrom the crosshead. The pivot point ofthis bell crank is a fixed point. Thecrosshead motion causes the link D torise and fall, and the eccentric-rod mo- SKELETON SKETCH porting point of yoke J is K, which is afixed point in the motion. The top of thereverse yoke point H is shifted by themovement of the reverse yoke J, and thisis accomplished by the r

. The steam-engine and other heat-motors. A=R-Rcosd. The equation for a finite rod gives the same result whena =0 and L= <*. Fig. 56 shows a crank-pin working in a yoke; the motionproduced is equivalent to that which would be produced by atheoretical rod of infinite length. It is used in some forms of VALVE-DIAGRAMS AND SLIDE-VALVES. 87 steam-pumps. It is usual to consider the eccentric-rod as a rodof infinite length, as it is often forty times the eccentric throwin length. The connecting-rod is usually only five to seven timesthe crank throw in length, and in accurate work the exact posi-t Stock Photo

RM2CF6CPD–. The steam-engine and other heat-motors. A=R-Rcosd. The equation for a finite rod gives the same result whena =0 and L= <*. Fig. 56 shows a crank-pin working in a yoke; the motionproduced is equivalent to that which would be produced by atheoretical rod of infinite length. It is used in some forms of VALVE-DIAGRAMS AND SLIDE-VALVES. 87 steam-pumps. It is usual to consider the eccentric-rod as a rodof infinite length, as it is often forty times the eccentric throwin length. The connecting-rod is usually only five to seven timesthe crank throw in length, and in accurate work the exact posi-t

. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . a large num-ber of marine engines, is shown inFig. 80. In this system only one ec-centric is used, the end of the eccen-tric rod being attached to a rod hungfrom a pin on the reversing-shaftlever R, by which it is constrained tomove in an arc of a circle inclined tothe center line. To an intermediatepoint P in the eccentric-rod a con-necting link is attached, which com-municates the necessary motion tothe slide-valv Stock Photo

RM2CDXBM9–. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . a large num-ber of marine engines, is shown inFig. 80. In this system only one ec-centric is used, the end of the eccen-tric rod being attached to a rod hungfrom a pin on the reversing-shaftlever R, by which it is constrained tomove in an arc of a circle inclined tothe center line. To an intermediatepoint P in the eccentric-rod a con-necting link is attached, which com-municates the necessary motion tothe slide-valv

. Railway mechanical engineer . of automatics is well adapted, naturally, tothe quantity manufacture of all sorts of pins, a representativeeccentric rod pin being shown in Fig. 9. This pin is made onone of the four spindle machines, the operations performed ineach position being as follows: First position—turn bodysize to IJ^ in. and body thread size to 1^ in.; Secondposition—counterbore in rear of thread, turn 1-in. end; Tapersm 12 iM,CasHeN.h j V ,/ i Taper Pin. Fig. 9—Drawing of Representative Eccentric Rod Pin Third f>osition—form tapers, thread; Fourth position—cutoff. To make a comp Stock Photo

RM2CGW4XA–. Railway mechanical engineer . of automatics is well adapted, naturally, tothe quantity manufacture of all sorts of pins, a representativeeccentric rod pin being shown in Fig. 9. This pin is made onone of the four spindle machines, the operations performed ineach position being as follows: First position—turn bodysize to IJ^ in. and body thread size to 1^ in.; Secondposition—counterbore in rear of thread, turn 1-in. end; Tapersm 12 iM,CasHeN.h j V ,/ i Taper Pin. Fig. 9—Drawing of Representative Eccentric Rod Pin Third f>osition—form tapers, thread; Fourth position—cutoff. To make a comp

. American engineer and railroad journal . ELEVATIONS AND SECTIONS OF CONSOLIDATION TYPE LOCOMOTIVE—A. T. & S. F. GY. 114 AMERICAN ENGINEER AND RAILROAD JOURNAL. ^rq [u —»- 0 lj. ECCENTRIC ROD & CRANIILINK BEARING DETAILS OF WALSCHAERT VALVE GEAR ON PACIFIC TYPE LOCOMOTIVE. in. simple cylinders. 57 in. driving wheels and a tractive effort of43,970 lbs. The boiler is also of the straight top design: measures78J4 n- outside diameter at the front end. It contains 355 2-in.tubes, 15 ft. long, giving a total heating surface of 2,930 sq. ft.The boiler ratios and ratios of boiler to weights are about Stock Photo

RM2CH2X64–. American engineer and railroad journal . ELEVATIONS AND SECTIONS OF CONSOLIDATION TYPE LOCOMOTIVE—A. T. & S. F. GY. 114 AMERICAN ENGINEER AND RAILROAD JOURNAL. ^rq [u —»- 0 lj. ECCENTRIC ROD & CRANIILINK BEARING DETAILS OF WALSCHAERT VALVE GEAR ON PACIFIC TYPE LOCOMOTIVE. in. simple cylinders. 57 in. driving wheels and a tractive effort of43,970 lbs. The boiler is also of the straight top design: measures78J4 n- outside diameter at the front end. It contains 355 2-in.tubes, 15 ft. long, giving a total heating surface of 2,930 sq. ft.The boiler ratios and ratios of boiler to weights are about

. Railway mechanical engineer . Fig. 7—Typical Examples of Work Done on the Automatics amples of the work done on these automatics including thework mentioned in the following list: PARTS MADE ON AUTOMATICS Spring rigging pins up to 7 in.Rivet set blanks Slip rings for driving box brassiKnuckle pins.Standard switch bolts.Eccentric rod pins.Spring rigging bushings.Front-end main rod key washer; Blower valve sleeves.Standard studs.Set screws.Balance plate studs.Wedge bolts.Boiler plate switches.Boiler plate punch diesGrease cup sockets. The way in which three of these parts are machined willbe d Stock Photo

RM2CGW54R–. Railway mechanical engineer . Fig. 7—Typical Examples of Work Done on the Automatics amples of the work done on these automatics including thework mentioned in the following list: PARTS MADE ON AUTOMATICS Spring rigging pins up to 7 in.Rivet set blanks Slip rings for driving box brassiKnuckle pins.Standard switch bolts.Eccentric rod pins.Spring rigging bushings.Front-end main rod key washer; Blower valve sleeves.Standard studs.Set screws.Balance plate studs.Wedge bolts.Boiler plate switches.Boiler plate punch diesGrease cup sockets. The way in which three of these parts are machined willbe d

. Railway mechanical engineer . r=- ^. .,B- Flg. 10—Lengths of Eccentric Rod and Crank; the Latter Trailing center O, the crank pin being on the forward dead center,when tlie reach rod connects above point F, Fig 1, and belowpoint IF, Fig. 8, (see style 1, Fig. 1). It is located below 9—Link Foot Offset with this point as a center strike the arc H /, using the linkfoot radiLis. With D as a center and a radius equal to thelength of the radius bar draw an arc intersecting H .1 at A.Then K L equals the amount of the link foot offset. If A = Link foot radius B = Length of the radius bar C = Link f Stock Photo

RM2CP3WC7–. Railway mechanical engineer . r=- ^. .,B- Flg. 10—Lengths of Eccentric Rod and Crank; the Latter Trailing center O, the crank pin being on the forward dead center,when tlie reach rod connects above point F, Fig 1, and belowpoint IF, Fig. 8, (see style 1, Fig. 1). It is located below 9—Link Foot Offset with this point as a center strike the arc H /, using the linkfoot radiLis. With D as a center and a radius equal to thelength of the radius bar draw an arc intersecting H .1 at A.Then K L equals the amount of the link foot offset. If A = Link foot radius B = Length of the radius bar C = Link f

. Railway mechanical engineer . .,B- Flg. 10—Lengths of Eccentric Rod and Crank; the Latter Trailing center O, the crank pin being on the forward dead center,when tlie reach rod connects above point F, Fig 1, and belowpoint IF, Fig. 8, (see style 1, Fig. 1). It is located below 9—Link Foot Offset with this point as a center strike the arc H /, using the linkfoot radiLis. With D as a center and a radius equal to thelength of the radius bar draw an arc intersecting H .1 at A.Then K L equals the amount of the link foot offset. If A = Link foot radius B = Length of the radius bar C = Link foot off Stock Photo

RM2CP3T3F–. Railway mechanical engineer . .,B- Flg. 10—Lengths of Eccentric Rod and Crank; the Latter Trailing center O, the crank pin being on the forward dead center,when tlie reach rod connects above point F, Fig 1, and belowpoint IF, Fig. 8, (see style 1, Fig. 1). It is located below 9—Link Foot Offset with this point as a center strike the arc H /, using the linkfoot radiLis. With D as a center and a radius equal to thelength of the radius bar draw an arc intersecting H .1 at A.Then K L equals the amount of the link foot offset. If A = Link foot radius B = Length of the radius bar C = Link foot off

. Railway mechanical engineer . Fig 2—Running Gear of Pe riotive, Class Lis Total main rod 720 930 Front end of side ro.l 185 136 Back end of side rod 231 162.5 .Side rod (main pin) 534.5 Kear end eccentric rod (equivalent at 13 in. radius) 22.7 The material for the main and side rods, piston rod, pins and alve motion parts is silico-manganesc carbon steel, heat treated, with the following characteristics: Carbon 0.50 per cent Ultimate strength.85,000 lb. per sq. in. Manganese 0.55 per cent Elastic limit 50.000 lb. per sq. in. Silicon 0.20 per cent Elongation in 2 in 20 per cent Phosphorus .. Stock Photo

RM2CH30W0–. Railway mechanical engineer . Fig 2—Running Gear of Pe riotive, Class Lis Total main rod 720 930 Front end of side ro.l 185 136 Back end of side rod 231 162.5 .Side rod (main pin) 534.5 Kear end eccentric rod (equivalent at 13 in. radius) 22.7 The material for the main and side rods, piston rod, pins and alve motion parts is silico-manganesc carbon steel, heat treated, with the following characteristics: Carbon 0.50 per cent Ultimate strength.85,000 lb. per sq. in. Manganese 0.55 per cent Elastic limit 50.000 lb. per sq. in. Silicon 0.20 per cent Elongation in 2 in 20 per cent Phosphorus ..

. American engineer and railroad journal . Front E Right ISM« FiB. 5Effect o£ weight ot eccentric roil boss and % eccentric rod at 45 x 5%14; = ■ = 18 lbs. nearly C„ 1485% x 18 23.51 lbs. rr 24 lbs 62 4- 23.5 — 18 4- C, = O Cj t= 5% lbs. c= 6 lbs 10 Combining all horizontal and rrtical forces 1—2—3—4—5—6—7—8—9—10 separtely, we have— Horizontal — 911 + 131 + 59 + 219 + 24 = 1,346 lbs. Vertical 1,295 — 93 + 46—1,716 + 6 = 462 lbs. Hence the counterbalance weight will be placed at an anglewhose tan. = 462 -j- 1,346, which is 18° 57 (or 19°)+ 90° = 109°back of the right-hand wri-l pin. Its magni Stock Photo

RM2CR3YD5–. American engineer and railroad journal . Front E Right ISM« FiB. 5Effect o£ weight ot eccentric roil boss and % eccentric rod at 45 x 5%14; = ■ = 18 lbs. nearly C„ 1485% x 18 23.51 lbs. rr 24 lbs 62 4- 23.5 — 18 4- C, = O Cj t= 5% lbs. c= 6 lbs 10 Combining all horizontal and rrtical forces 1—2—3—4—5—6—7—8—9—10 separtely, we have— Horizontal — 911 + 131 + 59 + 219 + 24 = 1,346 lbs. Vertical 1,295 — 93 + 46—1,716 + 6 = 462 lbs. Hence the counterbalance weight will be placed at an anglewhose tan. = 462 -j- 1,346, which is 18° 57 (or 19°)+ 90° = 109°back of the right-hand wri-l pin. Its magni

. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 90 THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. [March, off plates or slides wHli the governor, so that the steam may be cut off earlier or later by the action of the governor. This is etFected by an apparatus con- sistini; of a heaiistock sliding on a bed and attached by a link to the end of the eccentric rod, and by another link fastened on to a cam mounted on the headstock at one end and at the other end the hell crank lever before de- scribed. The headslock is connected by Stock Photo

RMREKAJB–. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 90 THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. [March, off plates or slides wHli the governor, so that the steam may be cut off earlier or later by the action of the governor. This is etFected by an apparatus con- sistini; of a heaiistock sliding on a bed and attached by a link to the end of the eccentric rod, and by another link fastened on to a cam mounted on the headstock at one end and at the other end the hell crank lever before de- scribed. The headslock is connected by

. Model engine construction, with practical instructions to artificers and amateurs. i OjZ, *1< Ka -/A /4- - U L *NS ^ *fc 4 ll Eccentric fi.odarulfiiU.ey. Full Size. rrfrt=?a -i—p*°] p^ J Connecting Rod. Full Size* L L ?T Elevation, and Plan, of frames.. Stock Photo

RM2AFKJ5F–. Model engine construction, with practical instructions to artificers and amateurs. i OjZ, *1< Ka -/A /4- - U L *NS ^ *fc 4 ll Eccentric fi.odarulfiiU.ey. Full Size. rrfrt=?a -i—p*°] p^ J Connecting Rod. Full Size* L L ?T Elevation, and Plan, of frames..

Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . ich is connected with the treadle, and which may be pivoted at any elevation. On this the ham-mer rests in the beginning, and when the workman presses down the treadle he pulls back this latch,and at the same time through the rod D separates the rolls. The hammer then falls. The instantthe blow is delivered, the operator removes his foot from the treadle, the drop-rod then falls, andthe eccentric sleeve turning the front roll, aided by the pull of the belt, is forced against the board, Stock Photo

RM2ANHMX7–Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . ich is connected with the treadle, and which may be pivoted at any elevation. On this the ham-mer rests in the beginning, and when the workman presses down the treadle he pulls back this latch,and at the same time through the rod D separates the rolls. The hammer then falls. The instantthe blow is delivered, the operator removes his foot from the treadle, the drop-rod then falls, andthe eccentric sleeve turning the front roll, aided by the pull of the belt, is forced against the board,

. Model engine construction, with practical instructions to artificers and amateurs. nuts)the rod can be put through the loop and solderedwith hard solder. This form of strap is muchlighter than a casting, and as the loop prevents thestrap from rubbing at every part upon the eccentric-pulley, it works with very little friction, and doeswell for small locomotives, where saving of weightand friction is a great matter. The strap has a gooddeal of spring in it, and when the boLjb is removedslips very readily off the eccentric-pulley. Thisstrap must be made quite circular and a good fit onthe pulle Stock Photo

RM2AFMEH6–. Model engine construction, with practical instructions to artificers and amateurs. nuts)the rod can be put through the loop and solderedwith hard solder. This form of strap is muchlighter than a casting, and as the loop prevents thestrap from rubbing at every part upon the eccentric-pulley, it works with very little friction, and doeswell for small locomotives, where saving of weightand friction is a great matter. The strap has a gooddeal of spring in it, and when the boLjb is removedslips very readily off the eccentric-pulley. Thisstrap must be made quite circular and a good fit onthe pulle

Shaft governors, centrifugal and inertia; simple methods for the adjustment of all classes of shaft governors . FIG. 3 ones designed by Professor Sweet and from the onenow used on the Straight Line engine. The valve-rod was connected to an eccentric through the mediumof a geared disk. In later constructions of the governor applied tothe Straight Line engine, the valve is connected to aswinging eccentric by link motions. My study of the literature of the subject would in- EVOLUTION OF THE SHAFT GOVERNOR 7 dicate that the shaft governor is at least, so far as itspractical application is concerne Stock Photo

RM2AND7EP–Shaft governors, centrifugal and inertia; simple methods for the adjustment of all classes of shaft governors . FIG. 3 ones designed by Professor Sweet and from the onenow used on the Straight Line engine. The valve-rod was connected to an eccentric through the mediumof a geared disk. In later constructions of the governor applied tothe Straight Line engine, the valve is connected to aswinging eccentric by link motions. My study of the literature of the subject would in- EVOLUTION OF THE SHAFT GOVERNOR 7 dicate that the shaft governor is at least, so far as itspractical application is concerne

The Locomotive . tonwere broken, and thepiston rod bent, twovalve port bridgesbroken, the crossheadand shoes broken andbent, connecting rodbent, eccentric disksand governor belt pul-ley on shaft damaged,and the bed platebroken beyond repair.The engine was housedin a structure builtclosely about it, andfurther expense was in-curred incident to therepair work becausethis structure had to betorn down, in order to ^^^- ?• install the large engine parts, -and then rebuilt. The cause of the accident was the gradual failure of the crankshaft due to continued reversals of internal stress. The failureo Stock Photo

RM2AM3MN3–The Locomotive . tonwere broken, and thepiston rod bent, twovalve port bridgesbroken, the crossheadand shoes broken andbent, connecting rodbent, eccentric disksand governor belt pul-ley on shaft damaged,and the bed platebroken beyond repair.The engine was housedin a structure builtclosely about it, andfurther expense was in-curred incident to therepair work becausethis structure had to betorn down, in order to ^^^- ?• install the large engine parts, -and then rebuilt. The cause of the accident was the gradual failure of the crankshaft due to continued reversals of internal stress. The failureo

RM2AG7AMG–. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled 'Mechanical movements, powers and devices' ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. ^^ position S for reversing;a^^-^ a R, valve rod connected to the eccentric arm at a. Theelliptic line, /, shows therange of the valve motionand swings to the verticalwith the link and moves the valve within the range of its lap. 197. Valve just opening, forward. 198.

The practical draughtsman's book of industrial design and machinist's and engineer's companion : forming a complete course of mechanical, engineering and architectural drawing . cylinder, and b the piston-rod, connected by a pair of connecting-rods, c, with the crank-shaft, d, which forms the axis of the uppermillstone, e. The joints that unite the ends of the rods, c, withthe piston-rod and crank-shaft are universal. The shaft, d, isprovided with a fly-wheel,/, which serves to receive an endlesstx»U for driving flour-dressing machines; and there is also an eccentric, g, on the shaft, d, for c Stock Photo

RM2AXA06P–The practical draughtsman's book of industrial design and machinist's and engineer's companion : forming a complete course of mechanical, engineering and architectural drawing . cylinder, and b the piston-rod, connected by a pair of connecting-rods, c, with the crank-shaft, d, which forms the axis of the uppermillstone, e. The joints that unite the ends of the rods, c, withthe piston-rod and crank-shaft are universal. The shaft, d, isprovided with a fly-wheel,/, which serves to receive an endlesstx»U for driving flour-dressing machines; and there is also an eccentric, g, on the shaft, d, for c

Shaft governors, centrifugal and inertia; simple methods for the adjustment of all classes of shaft governors . of adjusting this gov-ernor to produce desired results, are of interest to everystationary engineer. The Rites governor consists of a single piece of castiron in the general form of a bar, mounted at rightangles to the engine-shaft and carried on a pivot-pinparallel to the shaft. At a suitable point on this baris provided a wrist-pin to which the valve-rod is con-nected, or if the governor is placed elsewhere than atthe end of the engine-shaft, an eccentric is used insteadof the pin. Stock Photo

RM2AND2MM–Shaft governors, centrifugal and inertia; simple methods for the adjustment of all classes of shaft governors . of adjusting this gov-ernor to produce desired results, are of interest to everystationary engineer. The Rites governor consists of a single piece of castiron in the general form of a bar, mounted at rightangles to the engine-shaft and carried on a pivot-pinparallel to the shaft. At a suitable point on this baris provided a wrist-pin to which the valve-rod is con-nected, or if the governor is placed elsewhere than atthe end of the engine-shaft, an eccentric is used insteadof the pin.

. Cleveland medical gazette. G—Eccentric throw. H—Binding screw. E—Connecting rod or shaft.F—Receiving Socket. A—Pressure sound and spiral spring (D).B—Corrugated handle. I have never used it further than a sixteenth of an inch fromcenter. The length of treatment should be from five to twentyseconds. The cone at the end of the spiral spring is hollowed out tobetter adapt itself to the short process of the malleus or to receivea pledget of absorbent cotton to prevent any possibility of mechan-ical injury. You may get ankylosis of the ossicles and sclerosis of themembrane tympani from any inflam Stock Photo

RM2AG6JDK–. Cleveland medical gazette. G—Eccentric throw. H—Binding screw. E—Connecting rod or shaft.F—Receiving Socket. A—Pressure sound and spiral spring (D).B—Corrugated handle. I have never used it further than a sixteenth of an inch fromcenter. The length of treatment should be from five to twentyseconds. The cone at the end of the spiral spring is hollowed out tobetter adapt itself to the short process of the malleus or to receivea pledget of absorbent cotton to prevent any possibility of mechan-ical injury. You may get ankylosis of the ossicles and sclerosis of themembrane tympani from any inflam

Stationary steam engines, simple and compound; especially as adapted to light and power plants . XCIII. STEAM ENGINES FOR and tandem. The valves are on one rod, driven by asingle eccentric on the crank-pin ; the rod being in the axis of the engine and thevalves within the hollowpiston-rod. Cut-off is ef-fected by the passage of theports into metallic rings inthe ends of the cylinders,and is adjustable by hand orby the governor. Compres-sion is effected in the sepa-rate cushion-chamber.^ These engines are usuallygrouped in pairs, with cranksat right angles. As the valve-faces movewith the pisto Stock Photo

RM2AX794P–Stationary steam engines, simple and compound; especially as adapted to light and power plants . XCIII. STEAM ENGINES FOR and tandem. The valves are on one rod, driven by asingle eccentric on the crank-pin ; the rod being in the axis of the engine and thevalves within the hollowpiston-rod. Cut-off is ef-fected by the passage of theports into metallic rings inthe ends of the cylinders,and is adjustable by hand orby the governor. Compres-sion is effected in the sepa-rate cushion-chamber.^ These engines are usuallygrouped in pairs, with cranksat right angles. As the valve-faces movewith the pisto

Twentieth century hand-book for steam engineers and electricians, with questions and answers .. . alternately the stepped and theinclined position. Fig. 119 is a sectional perspec-tive view of this stoker and illustrates the workingparts. The grate bars receive their motion through themedium of a rocker bar and connecting rod. A shaftextending across the front of the stoker under thecoal hopper carries an eccentric that gives motion tothe connecting rod and also to the pusher in the coalhopper. This pusher, working back and forth, feedsthe coal over the dead plate onto the grates, and itsrange Stock Photo

RM2AXHAGK–Twentieth century hand-book for steam engineers and electricians, with questions and answers .. . alternately the stepped and theinclined position. Fig. 119 is a sectional perspec-tive view of this stoker and illustrates the workingparts. The grate bars receive their motion through themedium of a rocker bar and connecting rod. A shaftextending across the front of the stoker under thecoal hopper carries an eccentric that gives motion tothe connecting rod and also to the pusher in the coalhopper. This pusher, working back and forth, feedsthe coal over the dead plate onto the grates, and itsrange

Text-book of structural and physiological botany . grains of the shape of a rod or bone are found in thelatex of tropical Euphorbias, &c. (Fig. 46.) Mature starch-grains consist, as a rule, of a num er of layers whichappear to have been deposited around a central or eccentric nucleus ;but it is impossible to believe that separate layers have been actuallyso formed in the course of growth; it is much more probable thatthey grow by intussusception (see p. 15), and that the stratification isonly the consequence of the layers or shells containing a larger orsmaller quantity of water, as is shown b Stock Photo

RM2AXJT2F–Text-book of structural and physiological botany . grains of the shape of a rod or bone are found in thelatex of tropical Euphorbias, &c. (Fig. 46.) Mature starch-grains consist, as a rule, of a num er of layers whichappear to have been deposited around a central or eccentric nucleus ;but it is impossible to believe that separate layers have been actuallyso formed in the course of growth; it is much more probable thatthey grow by intussusception (see p. 15), and that the stratification isonly the consequence of the layers or shells containing a larger orsmaller quantity of water, as is shown b

. Appleton's dictionary of machines, mechanics, engine-work, and engineering. rrying the ratchet-catches for working the horizontalscrew of the cross-slide: it is guided by a bearing p screwedto the frame, and carries at its lower extremity a pin workingin the eccentric slot of the disk n. Thus when the rod d re-ceives its motion from the catch b, at the termination of thestroke of the table, its short rack causes the disk n to make aportion of a revolution, so as to raise or depress the rod oby means of the eccentric groove. This motion is at once ef-fectual and easy of application, besides p Stock Photo

RM2AG7GG4–. Appleton's dictionary of machines, mechanics, engine-work, and engineering. rrying the ratchet-catches for working the horizontalscrew of the cross-slide: it is guided by a bearing p screwedto the frame, and carries at its lower extremity a pin workingin the eccentric slot of the disk n. Thus when the rod d re-ceives its motion from the catch b, at the termination of thestroke of the table, its short rack causes the disk n to make aportion of a revolution, so as to raise or depress the rod oby means of the eccentric groove. This motion is at once ef-fectual and easy of application, besides p

A text-book of physics, largely experimentalOn the Harvard college 'Descriptive list of elementary physical experiments.' . end of it have no motion. No steam is ad-mitted to the cylinder. If, however, the handle H werepulled far to the left, L would rise close to the end of V,and this rod and the valve would share the horizontalmotion of the rod rf and the eccentric E. If H werepushed far to the right, L would approach the end ofF, and the eccentric E would control the motion of thevalve. The link-motion is, then, not merely a device for admit-ting steam during a longer or shorter part of the Stock Photo

RM2AM2DC2–A text-book of physics, largely experimentalOn the Harvard college 'Descriptive list of elementary physical experiments.' . end of it have no motion. No steam is ad-mitted to the cylinder. If, however, the handle H werepulled far to the left, L would rise close to the end of V,and this rod and the valve would share the horizontalmotion of the rod rf and the eccentric E. If H werepushed far to the right, L would approach the end ofF, and the eccentric E would control the motion of thevalve. The link-motion is, then, not merely a device for admit-ting steam during a longer or shorter part of the

Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . the eccentric at right angles to the crankwhen the Piston is at either end of the stroke. 1. Fasten a planed board at the eccentric side of theengine, in such a position that it will come under.the eccentricrod. 2. Put on the straps and rod loosely. 3. Then hold, or fasten a pencil to the rod, and have an as-sistant turn the eccentric once around, holding the pencil so itwill mark the exact travel of the rod on the board. I laud Book of Calculations, 305 TO GET ECCENTRI Stock Photo

RM2AJM2KT–Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . the eccentric at right angles to the crankwhen the Piston is at either end of the stroke. 1. Fasten a planed board at the eccentric side of theengine, in such a position that it will come under.the eccentricrod. 2. Put on the straps and rod loosely. 3. Then hold, or fasten a pencil to the rod, and have an as-sistant turn the eccentric once around, holding the pencil so itwill mark the exact travel of the rod on the board. I laud Book of Calculations, 305 TO GET ECCENTRI

. Model engine construction, with practical instructions to artificers and amateurs. e link, andthough the eccentric-pulley is fixed to run in onedirection only, by simply changing the position ofthe valve-spindle connecting-rod, the engine will runeither way, but not so well as with the ordinary linkmotion (having two separate eccentrics), for it doesnot reverse the lead of the slide-valve in reversingthe engine, and so gives an imperfect action to thevalve when the engine is moving backwards. (b) The ordinary link motion (see Fig. 42), withtwo separate eccentrics, gives the best results of a Stock Photo

RM2AFMDG0–. Model engine construction, with practical instructions to artificers and amateurs. e link, andthough the eccentric-pulley is fixed to run in onedirection only, by simply changing the position ofthe valve-spindle connecting-rod, the engine will runeither way, but not so well as with the ordinary linkmotion (having two separate eccentrics), for it doesnot reverse the lead of the slide-valve in reversingthe engine, and so gives an imperfect action to thevalve when the engine is moving backwards. (b) The ordinary link motion (see Fig. 42), withtwo separate eccentrics, gives the best results of a

The Civil engineer and architect's journal, scientific and railway gazette . -valve by a rod c. The length of thislever, as also the angle of inclination of the parts O, O, should bein accordance with the lead of the valve—the one or other of theinclined parts O, being caused to act upon the lever by a handlever, connected to the said cam in any convenient manner, so asto enable the engine-driver to start, reverse, and stop the enginereadily, by the same eccentric which gives motion to the slide-valve. By making the end of the vahe-rod moeable, as in a slotin the lever P, the steam may be wor Stock Photo

RM2AWK0J5–The Civil engineer and architect's journal, scientific and railway gazette . -valve by a rod c. The length of thislever, as also the angle of inclination of the parts O, O, should bein accordance with the lead of the valve—the one or other of theinclined parts O, being caused to act upon the lever by a handlever, connected to the said cam in any convenient manner, so asto enable the engine-driver to start, reverse, and stop the enginereadily, by the same eccentric which gives motion to the slide-valve. By making the end of the vahe-rod moeable, as in a slotin the lever P, the steam may be wor

RM2AG7AY1–. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled 'Mechanical movements, powers and devices' ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 196. REVERSING GEAR. Wolf type. E, is the eccentric; B, eccentric strap and arm ;/, a pin sliding in the link,S, which is moved to the. ^^ position S for reversing;a^^-^ a R, valve rod connected to the eccentric arm at a. Theelliptic line, /, shows therange of the val

. Model engine construction, with practical instructions to artificers and amateurs. R III. THE STEAM-ENGINE. The steam-engine, in whatever form it exists,consists of a bed-plate, which carries two distinctmechanisms: (1) The driving mechanism, viz. thepiston, piston-rod, cross-head, connecting-rod, crank,crank-shaft, and fly-wheel; (2) the valve-gear, viz.the slide-valve and spindle, and the eccentric, withits rod and strap: these control the admission ofsteam to one side of the piston, and the exhanstfrom the other. In addition to these there maybe other mechanisms added, viz. a governor, to Stock Photo

RM2AFMJHP–. Model engine construction, with practical instructions to artificers and amateurs. R III. THE STEAM-ENGINE. The steam-engine, in whatever form it exists,consists of a bed-plate, which carries two distinctmechanisms: (1) The driving mechanism, viz. thepiston, piston-rod, cross-head, connecting-rod, crank,crank-shaft, and fly-wheel; (2) the valve-gear, viz.the slide-valve and spindle, and the eccentric, withits rod and strap: these control the admission ofsteam to one side of the piston, and the exhanstfrom the other. In addition to these there maybe other mechanisms added, viz. a governor, to

RM2AG78XR–. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled 'Mechanical movements, powers and devices' ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 207. TRIPLE EXPAN-SION VALVE GEAR withsingle eccentric. A, eccentricstrap stay arm, which also oper-ates the high-pressure valve rod.B, bell-crank rock shaft thatoperates the medium - pressurevalve rod, linked to eccentricarm. C, rocker arm, shaft, andbell-crank conne

The Wheel and cycling trade review . nd 22-inch rearframe. Also 20-inch front and 24-inch rearframe. These will be fitted with a double steer-ing device of rod and chain, so arranged asto allow all wear to be readily taken up. An eccentric adjustment will be in front bracket,and detachable sprockets used. The frameis so constructed that each rider has the sameposition he would occupy on a single wheel,and the side swing, so usual in tandems, isentirely eliminated. All Liberty bicycles will be fitted witheither Vim, Morgan & Wright or Libertydetachable tires; the last named being madewith an em Stock Photo

RM2AWPJY4–The Wheel and cycling trade review . nd 22-inch rearframe. Also 20-inch front and 24-inch rearframe. These will be fitted with a double steer-ing device of rod and chain, so arranged asto allow all wear to be readily taken up. An eccentric adjustment will be in front bracket,and detachable sprockets used. The frameis so constructed that each rider has the sameposition he would occupy on a single wheel,and the side swing, so usual in tandems, isentirely eliminated. All Liberty bicycles will be fitted witheither Vim, Morgan & Wright or Libertydetachable tires; the last named being madewith an em

Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . to produce a vastlythe earlier patterns,which therefore neednot be described indetail. The Motor-Pictoroscope, as thenew apparatus iscalled, carries all theworking parts on theinner side of a door,as seen in Fig. 150.The essential me-chanism is showndiagrammatically inelevation. Fig. 151,and plan, Fig. 152.It consists in a littleframe, G^, carrying asmall roller, G^, drivenbackwards and for-wards by a rod, F^,working from an eccentric seen on the right in the first Stock Photo

RM2AMXT5C–Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . to produce a vastlythe earlier patterns,which therefore neednot be described indetail. The Motor-Pictoroscope, as thenew apparatus iscalled, carries all theworking parts on theinner side of a door,as seen in Fig. 150.The essential me-chanism is showndiagrammatically inelevation. Fig. 151,and plan, Fig. 152.It consists in a littleframe, G^, carrying asmall roller, G^, drivenbackwards and for-wards by a rod, F^,working from an eccentric seen on the right in the first

Heat engineering; a text book of applied thermodynamics for engineers and students in technical schools . n one direction have all had theireffects on its practical efficiency. In the steam engine (Fig. 67) steam containing heat is ad-mitted to the cylinder A by the valve B, so that it movesthe piston. The valve B is operated by the valve rod Cfrom an eccentric or crank D so that when the piston E hasreached a certain point steam is cut off from the cylinder andthe steam is allowed to expand to a point near or at theend of the stroke (release point) when the valve is so movedas to allow the st Stock Photo

RM2ANGWW7–Heat engineering; a text book of applied thermodynamics for engineers and students in technical schools . n one direction have all had theireffects on its practical efficiency. In the steam engine (Fig. 67) steam containing heat is ad-mitted to the cylinder A by the valve B, so that it movesthe piston. The valve B is operated by the valve rod Cfrom an eccentric or crank D so that when the piston E hasreached a certain point steam is cut off from the cylinder andthe steam is allowed to expand to a point near or at theend of the stroke (release point) when the valve is so movedas to allow the st

. Cleveland medical gazette. b. G—Eccentric throw. H—Binding screw. E—Connecting rod or shaft.F—Receiving Socket. A—Pressure sound and spiral spring (D).B—Corrugated handle. I have never used it further than a sixteenth of an inch fromcenter. The length of treatment should be from five to twentyseconds. The cone at the end of the spiral spring is hollowed out tobetter adapt itself to the short process of the malleus or to receivea pledget of absorbent cotton to prevent any possibility of mechan-ical injury. You may get ankylosis of the ossicles and sclerosis of themembrane tympani from any inf Stock Photo

RM2AG6JNP–. Cleveland medical gazette. b. G—Eccentric throw. H—Binding screw. E—Connecting rod or shaft.F—Receiving Socket. A—Pressure sound and spiral spring (D).B—Corrugated handle. I have never used it further than a sixteenth of an inch fromcenter. The length of treatment should be from five to twentyseconds. The cone at the end of the spiral spring is hollowed out tobetter adapt itself to the short process of the malleus or to receivea pledget of absorbent cotton to prevent any possibility of mechan-ical injury. You may get ankylosis of the ossicles and sclerosis of themembrane tympani from any inf

The Practical mechanic's journal . m-chests. Theyare worked by an eccentric on the crank shaft, the rod of which, s, isfitted with a plain gab and guard at the extremity, for the pin of therocking lever, oytke detaching apparatus for throwing it out of gearbeing worked by a hand lever, u, on the end of a transverse shaft passingacross the engine. The rocking lever, t, is double-ended, the eye at thelower end being jointed by a connecting link to a second lever, v, placedon the rocking shaft, w, carrying a lever for working the valve of thehigh-pressure cylinder. The main rocking shaft passes a Stock Photo

RM2AWH9D0–The Practical mechanic's journal . m-chests. Theyare worked by an eccentric on the crank shaft, the rod of which, s, isfitted with a plain gab and guard at the extremity, for the pin of therocking lever, oytke detaching apparatus for throwing it out of gearbeing worked by a hand lever, u, on the end of a transverse shaft passingacross the engine. The rocking lever, t, is double-ended, the eye at thelower end being jointed by a connecting link to a second lever, v, placedon the rocking shaft, w, carrying a lever for working the valve of thehigh-pressure cylinder. The main rocking shaft passes a

A text-book of physics, largely experimentalOn the Harvard college 'Descriptive list of elementary physical experiments.' . e, and thus admitting steam for a greater or lesspart of the stroke according to need. The rod V, in Fig. 210, which works the slide-valve (notshown), is so controlled that it can move onJy back andforth in the direction of its own length. A stud at the endof V connects with the slot in the link LL. The point Lis connected by means of the rod r with the eccentric E, THE STEAM-ENGINE. 385 the point L by the rod r with the eccentric E. Theseeccentrics are disks fixed upon t Stock Photo

RM2AM2DY7–A text-book of physics, largely experimentalOn the Harvard college 'Descriptive list of elementary physical experiments.' . e, and thus admitting steam for a greater or lesspart of the stroke according to need. The rod V, in Fig. 210, which works the slide-valve (notshown), is so controlled that it can move onJy back andforth in the direction of its own length. A stud at the endof V connects with the slot in the link LL. The point Lis connected by means of the rod r with the eccentric E, THE STEAM-ENGINE. 385 the point L by the rod r with the eccentric E. Theseeccentrics are disks fixed upon t

. Practical physics. pound to the square inch. Hence the con-denser reduces the back pressure against that end of thepiston which is open to the atmosphere from 15 poundsdown to 1 pound, and thus increases the effective pressurewhich the steam on the other side of the piston can exert. 235. The eccentric. In practice the valve rod R is not attached as inthe ideal engine indicated in Fig. 181, but motion is commuuicated toit by a so-called ec-centric. This consistsof a circular disk A(Fig. 182) rigidly at^tached to the axle butso set that its centerdoes not coincide withthe center of the axleA. Stock Photo

RM2AFJRGB–. Practical physics. pound to the square inch. Hence the con-denser reduces the back pressure against that end of thepiston which is open to the atmosphere from 15 poundsdown to 1 pound, and thus increases the effective pressurewhich the steam on the other side of the piston can exert. 235. The eccentric. In practice the valve rod R is not attached as inthe ideal engine indicated in Fig. 181, but motion is commuuicated toit by a so-called ec-centric. This consistsof a circular disk A(Fig. 182) rigidly at^tached to the axle butso set that its centerdoes not coincide withthe center of the axleA.

Farrow's military encyclopedia : a dictionary of military knowledge . nlfr. 120. Moclian-isni for rcvolviin; the cylinder in Coils lirearnis.Wlicn tlic lianiincr isj drawn back, the doj;, «, at-tiiclicd to the tumbler acts on the ratchet, l>, on thebark of llurcylinder, and is held ii|) lo Ihe ratchet bya sprinj;, c. i. Allernnte increasin;, ami dirninisli-ini^ motion, by means of eccentric loolheil wheeland toothed cylinder. 122. Oscillating or pendiilnmengine. Vv cylinder swings between truimions likea pendulum. The piston-rod coimects directly withcrank. 12!i. Intermittent rotary mot Stock Photo

RM2AX1WG4–Farrow's military encyclopedia : a dictionary of military knowledge . nlfr. 120. Moclian-isni for rcvolviin; the cylinder in Coils lirearnis.Wlicn tlic lianiincr isj drawn back, the doj;, «, at-tiiclicd to the tumbler acts on the ratchet, l>, on thebark of llurcylinder, and is held ii|) lo Ihe ratchet bya sprinj;, c. i. Allernnte increasin;, ami dirninisli-ini^ motion, by means of eccentric loolheil wheeland toothed cylinder. 122. Oscillating or pendiilnmengine. Vv cylinder swings between truimions likea pendulum. The piston-rod coimects directly withcrank. 12!i. Intermittent rotary mot

. Model engine construction, with practical instructions to artificers and amateurs. Fig. 36. accurately fits upon the eccentric-pulley, when thetwo halves are brought together, and yet allow theeccentric to revolve freely inside. After fitting, drilla hole through each lug and pass two bolts through,which are tightened up with nuts; a small hole canbe drilled, and an oil-cup screwed in for oiling theeccentric-pulley (see Figs. 36 and 37). 112 MODEL ENGINE CONSTRUCTION. The eccentric-pulley is a circular brass casting, oris turned out of a bit of brass rod: the former isadopted for the larger Stock Photo

RM2AFMGEK–. Model engine construction, with practical instructions to artificers and amateurs. Fig. 36. accurately fits upon the eccentric-pulley, when thetwo halves are brought together, and yet allow theeccentric to revolve freely inside. After fitting, drilla hole through each lug and pass two bolts through,which are tightened up with nuts; a small hole canbe drilled, and an oil-cup screwed in for oiling theeccentric-pulley (see Figs. 36 and 37). 112 MODEL ENGINE CONSTRUCTION. The eccentric-pulley is a circular brass casting, oris turned out of a bit of brass rod: the former isadopted for the larger

Railway and Locomotive Engineering . BAKER VALVE GE.R. .should be taken. On each dead center atram should be placed in the center ofeccentric rod bolt at links and a markmade on guide, if the mark made by tramwhen engine is on forward center isahead of one atadc when engine is onbackward center, the eccentric should be bar in next to last notch in quadrant ifforward motion, roll wheels forward andcatch each dead center, marking the valvestem, place reverse bar in last notch inbackward motion, catch each dead center,marking the valve stem, change eccentricrod to divide marks made on valve stem Stock Photo

RM2AM0914–Railway and Locomotive Engineering . BAKER VALVE GE.R. .should be taken. On each dead center atram should be placed in the center ofeccentric rod bolt at links and a markmade on guide, if the mark made by tramwhen engine is on forward center isahead of one atadc when engine is onbackward center, the eccentric should be bar in next to last notch in quadrant ifforward motion, roll wheels forward andcatch each dead center, marking the valvestem, place reverse bar in last notch inbackward motion, catch each dead center,marking the valve stem, change eccentricrod to divide marks made on valve stem

Appleton's dictionary of machines, mechanics, engine-work, and engineering . The stitch hook E, is fastened to the lower end of a bar a, which works or slides freely up and downthrough a piece of metal b, and is jointed by a joint screw c, to a connecting rod d, on whose upperend is a strap/, passing around an eccentric g, fixed on the main driving shaft A, of the machine.The upward and downward movements of the stitch hook are effected by such* eccentric during its en-tire revolution. In order to produce its forward and back movements, a lever £, working on a fulcrum£, is jointed at its lower Stock Photo

RM2AJ159W–Appleton's dictionary of machines, mechanics, engine-work, and engineering . The stitch hook E, is fastened to the lower end of a bar a, which works or slides freely up and downthrough a piece of metal b, and is jointed by a joint screw c, to a connecting rod d, on whose upperend is a strap/, passing around an eccentric g, fixed on the main driving shaft A, of the machine.The upward and downward movements of the stitch hook are effected by such* eccentric during its en-tire revolution. In order to produce its forward and back movements, a lever £, working on a fulcrum£, is jointed at its lower

Appleton's dictionary of machines, mechanics, engine-work, and engineering . Fig. 2274, plan of machine for bending horse-shoes, a a the frame, c the fly-wheeL e the crank-shaftd the connecting-rod. / a rack. M a wheel, whose cog mashes or fits into the cogs of the rack /L the eccentric piece of iron which fits into the piece K, on which the shoe is formed, as seen at Figs HORSE-SHOE MACHINE. 25 22*72 and 2273. O, cap which confines the piece of iron while in the act of bending around the piece K,as represented by the dotted lines at Fig. 2273. Fig. 2273, section of the irons K and L. These tw Stock Photo

RM2AJ2CB7–Appleton's dictionary of machines, mechanics, engine-work, and engineering . Fig. 2274, plan of machine for bending horse-shoes, a a the frame, c the fly-wheeL e the crank-shaftd the connecting-rod. / a rack. M a wheel, whose cog mashes or fits into the cogs of the rack /L the eccentric piece of iron which fits into the piece K, on which the shoe is formed, as seen at Figs HORSE-SHOE MACHINE. 25 22*72 and 2273. O, cap which confines the piece of iron while in the act of bending around the piece K,as represented by the dotted lines at Fig. 2273. Fig. 2273, section of the irons K and L. These tw

. Appleton's dictionary of machines, mechanics, engine-work, and engineering. valves. J J, valve-stems, on which are keyed the steam-valves. K, parallel-motion shaft and standard. L, lifting-rods, for lifting steam and exhaust valves,worked from an eccentric on the water-wheelshaft. M M, steam-toes, keyed to the lifting-rod. N N, feet for lifting-rod, attached to the rock-shaft. 0, steam and exhaust side-pipes. P, foot-valves and seats. Q, condenser, cast upon bed-plate. E, side-lever shaft, passing through and firmly keyedto condenser. e e, pillow-block columns, keyed into sockets cast upon t Stock Photo

RM2AGE76W–. Appleton's dictionary of machines, mechanics, engine-work, and engineering. valves. J J, valve-stems, on which are keyed the steam-valves. K, parallel-motion shaft and standard. L, lifting-rods, for lifting steam and exhaust valves,worked from an eccentric on the water-wheelshaft. M M, steam-toes, keyed to the lifting-rod. N N, feet for lifting-rod, attached to the rock-shaft. 0, steam and exhaust side-pipes. P, foot-valves and seats. Q, condenser, cast upon bed-plate. E, side-lever shaft, passing through and firmly keyedto condenser. e e, pillow-block columns, keyed into sockets cast upon t

The boys' book of engine-building; . ong to one edge at each end for feet sothat the castings can be screwed down to thebed-plate. The Crank.—From a piece of wood V2 inchthick and 1 inch long cut out a crank as shownat H. Make one end V2 inch wide, the other endV± inch wide and round off both ends. The fin-ished metal crank is used to connect the con-necting rod to the crankshaft. The Eccentric.—For this pattern cut out a disk% inch thick and % inch in diameter as shownat I. The Flywheel.—You can buy an iron flywheelin the rough with a %-inch face and 5 inches indiameter for 25 cents. If you w Stock Photo

RM2AJ2RGP–The boys' book of engine-building; . ong to one edge at each end for feet sothat the castings can be screwed down to thebed-plate. The Crank.—From a piece of wood V2 inchthick and 1 inch long cut out a crank as shownat H. Make one end V2 inch wide, the other endV± inch wide and round off both ends. The fin-ished metal crank is used to connect the con-necting rod to the crankshaft. The Eccentric.—For this pattern cut out a disk% inch thick and % inch in diameter as shownat I. The Flywheel.—You can buy an iron flywheelin the rough with a %-inch face and 5 inches indiameter for 25 cents. If you w

The boys' book of engine-building; . on connecting rod 1.50 3.50 5.00 Eccentric and straps 2.50 3.50 5.00 Flywheel, bored and faced 2.00 3.00 4.00 Castings of Cylinders.—Or you can get the castingsfor the cylinders in the rough and finish them yourself;they cost: Diameter of Cylinder... 1 inch 1% inch 2 inchPrice, bored $1.50 $2.00 $4.00 The i%- and 2-inch cylinders have the ports cast inthem while the small cylinder which is made of brassmust have the ports drilled in it and an extra charge of75 cents is made for doing it. Appendices 249 Castings for an Oscillating Engine.—A complete setof ca Stock Photo

RM2AJ21J5–The boys' book of engine-building; . on connecting rod 1.50 3.50 5.00 Eccentric and straps 2.50 3.50 5.00 Flywheel, bored and faced 2.00 3.00 4.00 Castings of Cylinders.—Or you can get the castingsfor the cylinders in the rough and finish them yourself;they cost: Diameter of Cylinder... 1 inch 1% inch 2 inchPrice, bored $1.50 $2.00 $4.00 The i%- and 2-inch cylinders have the ports cast inthem while the small cylinder which is made of brassmust have the ports drilled in it and an extra charge of75 cents is made for doing it. Appendices 249 Castings for an Oscillating Engine.—A complete setof ca

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . each other. The unionlink attached to the crosshead, and theeccentric rod are connected to separateends of a bell crank. The end of thebell crank attached to the eccentric roddescribes an ellipse at an irregular ve-locity. This varying motion is conveyedthrough the bell crank and the combina-tion lever and valve rod as shown in thedetailed drawings. The result of the twomotions is that the valve travels veryrapidly at the beginning of its stroke, andby the time that the piston has movedone-tw Stock Photo

RM2CRTJH9–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . each other. The unionlink attached to the crosshead, and theeccentric rod are connected to separateends of a bell crank. The end of thebell crank attached to the eccentric roddescribes an ellipse at an irregular ve-locity. This varying motion is conveyedthrough the bell crank and the combina-tion lever and valve rod as shown in thedetailed drawings. The result of the twomotions is that the valve travels veryrapidly at the beginning of its stroke, andby the time that the piston has movedone-tw

. Railway mechanical engineer . the eccentric is placed with the radiusof eccentricity opposite the clapper when the bell is at restor at its extreme low point. Any movement of the bellfrom this position causes the eccentric to depress the forkedpush-rtxl against the resistance of the string; this causesthe push-rod to act as a friction brake on the eccentric. Ofcourse, the frictional resistance of the push-rod increasesdirectly with the upward stroke of the bell and decreasesdirectly with the tlownward stroke. In practice tliis device lias worked splendidly and withpracticallv no attention ex Stock Photo

RM2CGTBWG–. Railway mechanical engineer . the eccentric is placed with the radiusof eccentricity opposite the clapper when the bell is at restor at its extreme low point. Any movement of the bellfrom this position causes the eccentric to depress the forkedpush-rtxl against the resistance of the string; this causesthe push-rod to act as a friction brake on the eccentric. Ofcourse, the frictional resistance of the push-rod increasesdirectly with the upward stroke of the bell and decreasesdirectly with the tlownward stroke. In practice tliis device lias worked splendidly and withpracticallv no attention ex

. The American railway; its construction, development, management, and appliances . of the axle of the loco-motive to which it is attached.The centre n of the outside pe-riphery of the eccentric is somedistance from S, the centre of the shaft. A metal ring, K K (Fig. 23),made in two halves, embraces the eccentric, and the latter revolves in-side of this ring. A rod, Z, is attached to the strap, and is connectedwith the valve so that the motion of the eccentric is communicatedto it. It is obvious that if the ec-centric revolves it will impart areciprocating motion to the rodL, which is communic Stock Photo

RM2CH2848–. The American railway; its construction, development, management, and appliances . of the axle of the loco-motive to which it is attached.The centre n of the outside pe-riphery of the eccentric is somedistance from S, the centre of the shaft. A metal ring, K K (Fig. 23),made in two halves, embraces the eccentric, and the latter revolves in-side of this ring. A rod, Z, is attached to the strap, and is connectedwith the valve so that the motion of the eccentric is communicatedto it. It is obvious that if the ec-centric revolves it will impart areciprocating motion to the rodL, which is communic

. The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing . SfeSillP. cylinder, and b the piston-rod, connected by a pair of connecting-rods, c, with the crank-shaft, d, which forms the axis of the uppermillstone, e. The joints that unite the ends of the rods, c, withthe piston-rod and crank-shaft are universal. The shaft, d, isprovided with a fly-wheel, /, which serves to receive an endlessbelt for driving flour-dressing machines; and there is also an eccentric, g, Stock Photo

RM2CDFYF3–. The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing . SfeSillP. cylinder, and b the piston-rod, connected by a pair of connecting-rods, c, with the crank-shaft, d, which forms the axis of the uppermillstone, e. The joints that unite the ends of the rods, c, withthe piston-rod and crank-shaft are universal. The shaft, d, isprovided with a fly-wheel, /, which serves to receive an endlessbelt for driving flour-dressing machines; and there is also an eccentric, g,

RM2CHA86H–. The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing. . cylinder, and h the piston-rod, connected by a pair of connecting-rods, c, with the crank-shaft, d, which forms the axis of the uppermillstone, e. The joints that unite the ends of the rods, c, withthe piston-rod and crank-shaft are universal. The shaft, d, isprovided with a fly-wheel,/, which serves to receive an endlessbelt for driving flour-dressing machines; and there is also an eccentric, g, on the sha

. Regional anesthesia : its technic and clinical application . Fig. 13.—Manner of filling the syringe. The eccentric tip is turned toward the dorsumof the hand.. Fig. 14.—Manner of holding the syringe when it has been filled. The thumb is appliedto the plunger rod to prevent its displacement. The cover is screwed on to the barrel and the syringe filled withsolution, in the manner shown in Fig. 13, the eccentric tip beingturned toward the dorsum of the left hand. The syringe thus filled is 42 REGIONAL ANESTHESIA then held between the middle and forefingers of the right hand, withthe thumb resti Stock Photo

RM2CE20B4–. Regional anesthesia : its technic and clinical application . Fig. 13.—Manner of filling the syringe. The eccentric tip is turned toward the dorsumof the hand.. Fig. 14.—Manner of holding the syringe when it has been filled. The thumb is appliedto the plunger rod to prevent its displacement. The cover is screwed on to the barrel and the syringe filled withsolution, in the manner shown in Fig. 13, the eccentric tip beingturned toward the dorsum of the left hand. The syringe thus filled is 42 REGIONAL ANESTHESIA then held between the middle and forefingers of the right hand, withthe thumb resti

RM2CDFYF2–. The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing . SfeSillP. cylinder, and b the piston-rod, connected by a pair of connecting-rods, c, with the crank-shaft, d, which forms the axis of the uppermillstone, e. The joints that unite the ends of the rods, c, withthe piston-rod and crank-shaft are universal. The shaft, d, isprovided with a fly-wheel, /, which serves to receive an endlessbelt for driving flour-dressing machines; and there is also an eccentric, g,

. American engineer and railroad journal . can be approximately represented by Zeuners valve diagramssimilar to those used for the Gooch link motion, or for ashifting eccentric with constant lead. As usually construct-ed, the Walschaert gear does not give harmonic motion tothe valve, for the motion of the crosshead of the engine withthe usual proportions of locomotives has considerable irreg-ularity on account of the angularity of the connecting rod;also some irregularity is introduced by the combining levera f. Consequently such diagrams as Figs. 3 and 4, can beof use only in roughly blocking Stock Photo

RM2CR40M2–. American engineer and railroad journal . can be approximately represented by Zeuners valve diagramssimilar to those used for the Gooch link motion, or for ashifting eccentric with constant lead. As usually construct-ed, the Walschaert gear does not give harmonic motion tothe valve, for the motion of the crosshead of the engine withthe usual proportions of locomotives has considerable irreg-ularity on account of the angularity of the connecting rod;also some irregularity is introduced by the combining levera f. Consequently such diagrams as Figs. 3 and 4, can beof use only in roughly blocking

. American engineer and railroad journal . point sufficient to minimize or eliminateall angularity. The gear connection rod also dispenses with theformer eccentric arm, thus removing a part from the mechanism.It now connects the bell crank with the lower end of the radiusbar, and continues on down to connect with the front end of the■eccentric rod. With the old gear the tumbling shaft was of the rocker arm■design, as the direction of motion of the reverse lever had to bereversed. Now that this is no longer necessary the reach rod isstraight from the yoke to the reverse lever, and furthermoreth Stock Photo

RM2CR86WB–. American engineer and railroad journal . point sufficient to minimize or eliminateall angularity. The gear connection rod also dispenses with theformer eccentric arm, thus removing a part from the mechanism.It now connects the bell crank with the lower end of the radiusbar, and continues on down to connect with the front end of the■eccentric rod. With the old gear the tumbling shaft was of the rocker arm■design, as the direction of motion of the reverse lever had to bereversed. Now that this is no longer necessary the reach rod isstraight from the yoke to the reverse lever, and furthermoreth

. American engineer and railroad journal . spressed into the steam chest ; that portion of the rod whichruns in this guide is cylhidrieal. The ei-eentrics are of wrought iron made in two pieces, andare keyed to the axle ; the eccentric straps are also of wroughtiron, and are held together by bolts with a copper shim inbetween them, which permits them to be drawn together asthey wear. All the eccentrics of the Belgian engines are ofthe same type. The exhaust is variable at the will of theengine-driver. The axles arc of .steel, but criuik-axles of ironare also used, when the iron is of first-cla Stock Photo

RM2CREXKE–. American engineer and railroad journal . spressed into the steam chest ; that portion of the rod whichruns in this guide is cylhidrieal. The ei-eentrics are of wrought iron made in two pieces, andare keyed to the axle ; the eccentric straps are also of wroughtiron, and are held together by bolts with a copper shim inbetween them, which permits them to be drawn together asthey wear. All the eccentrics of the Belgian engines are ofthe same type. The exhaust is variable at the will of theengine-driver. The axles arc of .steel, but criuik-axles of ironare also used, when the iron is of first-cla

. Cassier's magazine. d permittingindependent and free expansion andcontraction in both pairs. The bearing surfaces in the shaft,crank-pins and piston-rod guides aredesigned throughout on the most liberalscale, and, as forced lubrication isadopted, it may be taken for grantedthat the wear of these important work-ing parts will be inappreciable for manyyears to come. The vertical air pumps,situated behind the low-pressure cyl- is no wrist-plate, the exhaust valvesbeing worked directly from a continuousline of eccentric rods. The admissionvalves are actuated and tripped throughthe medium of a lo Stock Photo

RM2CED6KK–. Cassier's magazine. d permittingindependent and free expansion andcontraction in both pairs. The bearing surfaces in the shaft,crank-pins and piston-rod guides aredesigned throughout on the most liberalscale, and, as forced lubrication isadopted, it may be taken for grantedthat the wear of these important work-ing parts will be inappreciable for manyyears to come. The vertical air pumps,situated behind the low-pressure cyl- is no wrist-plate, the exhaust valvesbeing worked directly from a continuousline of eccentric rods. The admissionvalves are actuated and tripped throughthe medium of a lo

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . as awhole, may also be consid-ered a lever, with the ec-centric blade which controlsthe motion of the valveacting as the power and theother as the fulcrum. The eccentric rods arcsubject to alternate tensionand compression, or rather,bending, and if the rod isbent to pass an axle thestrains are still more com-plicated. The greatest straincomes on the rod in fullgear; at other points it hasthe advantage of the leverage afforded bythe link. The rod should be designed as along column. The power r Stock Photo

RM2CR3NNJ–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . as awhole, may also be consid-ered a lever, with the ec-centric blade which controlsthe motion of the valveacting as the power and theother as the fulcrum. The eccentric rods arcsubject to alternate tensionand compression, or rather,bending, and if the rod isbent to pass an axle thestrains are still more com-plicated. The greatest straincomes on the rod in fullgear; at other points it hasthe advantage of the leverage afforded bythe link. The rod should be designed as along column. The power r

RM2CDG2XR–. The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing . d, represented in differentpositions in figs. 28 and 31, and in horizontal section, fig. 32,is attached, by its rod, g, to the vertical rod, n, which is joined tothe rod, n2, of the circular eccentric, n, figs. 33 and 34. When,as was customary until lately, the centre of the eccentric lies in aradius perpendicular to the direction of the crank, the movements ofthe steam piston and valve are different to each

. The half-tone process. A practical manual of photo-engraving in half-tone on zinc, copper, and brass. Where power can be obtained it may be done by meansof an eccentric and connecting rod on the overheadshafting, or the eccen-tric may be placedon the driving axleof the stand, or onthe pivoting axle.Here is an illustra-tion of a stand whichmay be taken astypical of such ar-rangements (fig. 68).The lever at the side ^ yenables the rocking MHlHIIMBlMllIimotion to be stoppedwithout stopping themotive power, the tub being thrown out of connectionwith the crank. For the etching troughs, trays, or Stock Photo

RM2CEHFA9–. The half-tone process. A practical manual of photo-engraving in half-tone on zinc, copper, and brass. Where power can be obtained it may be done by meansof an eccentric and connecting rod on the overheadshafting, or the eccen-tric may be placedon the driving axleof the stand, or onthe pivoting axle.Here is an illustra-tion of a stand whichmay be taken astypical of such ar-rangements (fig. 68).The lever at the side ^ yenables the rocking MHlHIIMBlMllIimotion to be stoppedwithout stopping themotive power, the tub being thrown out of connectionwith the crank. For the etching troughs, trays, or

. The railroad and engineering journal . late, the Authorwould state his conviction, that while Bremmes specifica-tion was the first to show the radius-rod attached to Hacl:-worths No. 2 gear wrought by an eccentric, yet he wasnot the inventor of the radius-rod attachment (Hackworths1859 S^^ ^-^^^ t), neither was he the first to apply it to alever of the first order, for Joy had included this, so thatBremme is tied down to his own design of gear con-structed and operating as substantially set forth, butwhich is never made ; at least in the Authors experiencehe has never seen one. In 1879 and 1 Stock Photo

RM2CPN5DP–. The railroad and engineering journal . late, the Authorwould state his conviction, that while Bremmes specifica-tion was the first to show the radius-rod attached to Hacl:-worths No. 2 gear wrought by an eccentric, yet he wasnot the inventor of the radius-rod attachment (Hackworths1859 S^^ ^-^^^ t), neither was he the first to apply it to alever of the first order, for Joy had included this, so thatBremme is tied down to his own design of gear con-structed and operating as substantially set forth, butwhich is never made ; at least in the Authors experiencehe has never seen one. In 1879 and 1

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . possesses some fea-tures superior to the Walschaert mo-tion, for it has no eccentric or axle con-nections, besides having fewer movingparts and motion pins. The motion for the valve is taken di-rect from the connecting rod and by ■4--. ..4- the lower end of a lever, E, from theupper end of which lever the motion istransmitted to the valve spindle by thelod C. The center or fulcrum, F, of thelever E, partakes also of the verticalmovement of the connecting rod toan extent equal to the amount of Stock Photo

RM2CRC0W5–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . possesses some fea-tures superior to the Walschaert mo-tion, for it has no eccentric or axle con-nections, besides having fewer movingparts and motion pins. The motion for the valve is taken di-rect from the connecting rod and by ■4--. ..4- the lower end of a lever, E, from theupper end of which lever the motion istransmitted to the valve spindle by thelod C. The center or fulcrum, F, of thelever E, partakes also of the verticalmovement of the connecting rod toan extent equal to the amount of

. A manual of marine engineering: comprising the design, construction, and working of marine machinery. t, which acts as the lever to turn the float. The eccentric-pin has a boss or strap running loose on it, and turned round by means of aradius rod, called the king rod L E (fig. 116), attached to one of the floatlevers; the other radius rods are jointed both at the levers and boss. Theeccentric-pin is secured in its proper position to the sponson beam, so that■when the wheel moves round each float is brought in turn to the properposition for entry, <kc. The feathering is sometimes done by Stock Photo

RM2CEJAF9–. A manual of marine engineering: comprising the design, construction, and working of marine machinery. t, which acts as the lever to turn the float. The eccentric-pin has a boss or strap running loose on it, and turned round by means of aradius rod, called the king rod L E (fig. 116), attached to one of the floatlevers; the other radius rods are jointed both at the levers and boss. Theeccentric-pin is secured in its proper position to the sponson beam, so that■when the wheel moves round each float is brought in turn to the properposition for entry, <kc. The feathering is sometimes done by

. Scientific American Volume 25 Number 21 (November 1871). whether the bellwas ringing at the time or not. The application of this im-provement would settle all doubts prising from such conflictof testimony, and thus benefit companies, while the certaintyof the alarm would prevent accidents arising from neglect. Fig. 1 is a perspective view of a locomotive with the alarmattached. Fig. 2 is a diagram showing the details of con-struction. eccentric communicate a rooking motion to the lever, H, bymeans of the connecting rod. The upper end of this leverengages with a notch on the lower side of the Stock Photo

RM2CEJJ6P–. Scientific American Volume 25 Number 21 (November 1871). whether the bellwas ringing at the time or not. The application of this im-provement would settle all doubts prising from such conflictof testimony, and thus benefit companies, while the certaintyof the alarm would prevent accidents arising from neglect. Fig. 1 is a perspective view of a locomotive with the alarmattached. Fig. 2 is a diagram showing the details of con-struction. eccentric communicate a rooking motion to the lever, H, bymeans of the connecting rod. The upper end of this leverengages with a notch on the lower side of the

RM2CDX5GD–. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fio. 8.—Armington and Sims governor. Fio. !).—An Sims governor. usual eccentric straps, to which are directly attached the valve-rod. Wluii tlie engine is run-ning at its greatest velocity, the weights, due to the centrifugal force overcoming the springs,will be out. The eceentricity of the two combine(l eccentrics is then the distance shown at A,in Fig. 8. The other exlreiiie. when the engine has its greatest load

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . rod are attached to the arms of anintermediate rock shaft, the motion beingindirect. The eccentric throw is sVz steel, with bronze shoes. The guides areof steel. The low-pressure crosshead andguides on each side of the locomotive arelocated outside the frames and the cross-head is coupled with the main drivingwheel, which in this locomotive is thefront wheel, by a connecting rod, as inordinary practice. In addition, the mainaxle has two cranks set at right anglesto each other, one on each sid Stock Photo

RM2CGX1Y9–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . rod are attached to the arms of anintermediate rock shaft, the motion beingindirect. The eccentric throw is sVz steel, with bronze shoes. The guides areof steel. The low-pressure crosshead andguides on each side of the locomotive arelocated outside the frames and the cross-head is coupled with the main drivingwheel, which in this locomotive is thefront wheel, by a connecting rod, as inordinary practice. In addition, the mainaxle has two cranks set at right anglesto each other, one on each sid

. Applied thermodynamics for engineers. centric rod N and the eccentric E, In the end view, L is theopening for the admission of steam to the steam chest K^ § is a sim-ilar opening for the exit of the steam (shown also in the plan), andFis the valve. 423. The Cycle. With the piston in the position shown, andmoving to the left, steam is passing from the steam chest through Yinto the cylinder, while another mass of steam, which has expendedits energy, is passing from the other side of the piston through theport Xand the opening Q to the atmosphere or the condenser.When the piston shall have reac Stock Photo

RM2CEKX3A–. Applied thermodynamics for engineers. centric rod N and the eccentric E, In the end view, L is theopening for the admission of steam to the steam chest K^ § is a sim-ilar opening for the exit of the steam (shown also in the plan), andFis the valve. 423. The Cycle. With the piston in the position shown, andmoving to the left, steam is passing from the steam chest through Yinto the cylinder, while another mass of steam, which has expendedits energy, is passing from the other side of the piston through theport Xand the opening Q to the atmosphere or the condenser.When the piston shall have reac

. Cassier's magazine. inletvalve at a very early point of the pis-tons stroke. Later points of cut-off occur as thegovernor descends and moves theroller / out of the way of the curvedlever E. The descent of the steamvalve is accelerated by the spiralspring L, but as it nears the bottom,the compression of the air beneath thepiston M checks its velocity and pre-vents injury to the valve and seat.The extent of the cushioning is regu-lated by the small air-valve N. The exhaust valve is worked by itsown eccentric T, rod U, and curvedlever V, the latter rolling upon thecurved surface of block W and Stock Photo

RM2CF312E–. Cassier's magazine. inletvalve at a very early point of the pis-tons stroke. Later points of cut-off occur as thegovernor descends and moves theroller / out of the way of the curvedlever E. The descent of the steamvalve is accelerated by the spiralspring L, but as it nears the bottom,the compression of the air beneath thepiston M checks its velocity and pre-vents injury to the valve and seat.The extent of the cushioning is regu-lated by the small air-valve N. The exhaust valve is worked by itsown eccentric T, rod U, and curvedlever V, the latter rolling upon thecurved surface of block W and

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . pposite direction fromthat of the outside admission slide valve. In addition to the change of position inthe eccentric there is also a change neces-sary in the relative positions of the ra-dius bar, that is. the connection betweenthe link and valve rod, the outside admis-sion valve requiring that the valve rod of Breakage in Service which are simply modifications of thesame general principle. In the oscillating link as now in use,there is an attachment extending beyondand underneath the botto Stock Photo

RM2CH3W2E–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . pposite direction fromthat of the outside admission slide valve. In addition to the change of position inthe eccentric there is also a change neces-sary in the relative positions of the ra-dius bar, that is. the connection betweenthe link and valve rod, the outside admis-sion valve requiring that the valve rod of Breakage in Service which are simply modifications of thesame general principle. In the oscillating link as now in use,there is an attachment extending beyondand underneath the botto

. Pleasures of angling with rod and reel for trout and salmon . s hooked his fish.The tussle was severe and protracted. The fishwas a stubborn brute, always doing just the verything it was hoped he would not do — rushing andleaping and sulking in such eccentric and perverseways as to keep his captor moving backward andforward like a wearied sentinel at his post. If thefish continued to thus turn upon his own trackslong enough, his capture, sooner or later, would bereasonably sure. But nothing is more uncertainthan the movements of a hooked salmon, and thoseof us who had ceased fishing to witne Stock Photo

RM2CGHGF0–. Pleasures of angling with rod and reel for trout and salmon . s hooked his fish.The tussle was severe and protracted. The fishwas a stubborn brute, always doing just the verything it was hoped he would not do — rushing andleaping and sulking in such eccentric and perverseways as to keep his captor moving backward andforward like a wearied sentinel at his post. If thefish continued to thus turn upon his own trackslong enough, his capture, sooner or later, would bereasonably sure. But nothing is more uncertainthan the movements of a hooked salmon, and thoseof us who had ceased fishing to witne

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . hecurve of the link / is an arc of a circlehaving the length of the radius rod asits radius. This being a short explanation of the return to the same place for position £jand £1 of the eccentric; for these posi-tions of the eccentric, which is placedat right angles to the main crank, arerespective positions, when the maincrank is in dead centers. Consequentlythe coincidence point H, (Fig. 3) mustbe on the horizontal line through O. As shown in Fig. 2, that SiS^SiSt,there ought to exist the eq Stock Photo

RM2CNPRWY–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . hecurve of the link / is an arc of a circlehaving the length of the radius rod asits radius. This being a short explanation of the return to the same place for position £jand £1 of the eccentric; for these posi-tions of the eccentric, which is placedat right angles to the main crank, arerespective positions, when the maincrank is in dead centers. Consequentlythe coincidence point H, (Fig. 3) mustbe on the horizontal line through O. As shown in Fig. 2, that SiS^SiSt,there ought to exist the eq

. Report of the Geological exploration of the fortieth parallel . Scale : 27 THE COMSTOCK M^ES. 121 is supported, are fixed at one end to the upper part of the lifting rod, h, whilethe other end passes around the shaft, a, as seen at i, Fig. 2, and is attached toit, so that the tendency of this chain, while there is any strain on the cable, isto revolve the shaft, a, in such manner that the eccentric teeth are turned awayfrom the guides. If, however, by the breaking of the cable or other reasonthis strain be relaxed, the springs, f, f, act upon the shaft, a, and turn theeccentric teeth toward Stock Photo

RM2CP76P5–. Report of the Geological exploration of the fortieth parallel . Scale : 27 THE COMSTOCK M^ES. 121 is supported, are fixed at one end to the upper part of the lifting rod, h, whilethe other end passes around the shaft, a, as seen at i, Fig. 2, and is attached toit, so that the tendency of this chain, while there is any strain on the cable, isto revolve the shaft, a, in such manner that the eccentric teeth are turned awayfrom the guides. If, however, by the breaking of the cable or other reasonthis strain be relaxed, the springs, f, f, act upon the shaft, a, and turn theeccentric teeth toward

. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . nciplesof the device, but are merely mattersof convenience made to suit the in-creased size of the engines. Amongthe changes in form it will be observedthat the original method of causing theradial link to oscillate on its centralsuspension stud was by an eccentric necessary in the relative positions ofthe radius bar and valve rod, the out-side admission valve requiring that thevalve rod should be attached to thecombination lever above the radius baras in Walschaerts original design,whereas w Stock Photo

RM2CR2KT9–. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . nciplesof the device, but are merely mattersof convenience made to suit the in-creased size of the engines. Amongthe changes in form it will be observedthat the original method of causing theradial link to oscillate on its centralsuspension stud was by an eccentric necessary in the relative positions ofthe radius bar and valve rod, the out-side admission valve requiring that thevalve rod should be attached to thecombination lever above the radius baras in Walschaerts original design,whereas w

$. The lay-out of Corliss valve gears. in has reached any fraction of itsstroke, measured on the chord a gthe steam pin will have completed the 40 same fraction of its stroke measured onthe chord a g. Since the motion of thereach rod pin is also proportional to thehorizontal displacement of the eccentric,it follows that the motion of the steampin, measured on the chord ag, is ex-actly proportional to the horizontal dis-placement of the eccentric. JNTow, whilethe eccentric moves from d to Z>, Fig. 7,the horizontal displacement is the fraction e b — of the total eccentric travel and there-at Stock Photo$

RM2CEMY69–. The lay-out of Corliss valve gears. in has reached any fraction of itsstroke, measured on the chord a gthe steam pin will have completed the 40 same fraction of its stroke measured onthe chord a g. Since the motion of thereach rod pin is also proportional to thehorizontal displacement of the eccentric,it follows that the motion of the steampin, measured on the chord ag, is ex-actly proportional to the horizontal dis-placement of the eccentric. JNTow, whilethe eccentric moves from d to Z>, Fig. 7,the horizontal displacement is the fraction e b — of the total eccentric travel and there-at

. The Street railway journal . d upon a substantial wooden rod, and thecontacts are located near the surface of the oil instead ofnear the bottom of the receptacle, thus insuring freedom ofdeposits of carbonized particles at the points of contact. The April 7, 1906.] STREET RAILWAY JOURNAL. 551 oil tanks are of sheet metal, and are insulated fromthe circuit. As is usual in this type of switch, thecompartments are closed at the rear by the brickstructure, while the front of each compartment is enclosed bya cover of asbestos lumber, held in place by eccentric clamps,thus facilitating quick and e Stock Photo

RM2CH5A55–. The Street railway journal . d upon a substantial wooden rod, and thecontacts are located near the surface of the oil instead ofnear the bottom of the receptacle, thus insuring freedom ofdeposits of carbonized particles at the points of contact. The April 7, 1906.] STREET RAILWAY JOURNAL. 551 oil tanks are of sheet metal, and are insulated fromthe circuit. As is usual in this type of switch, thecompartments are closed at the rear by the brickstructure, while the front of each compartment is enclosed bya cover of asbestos lumber, held in place by eccentric clamps,thus facilitating quick and e

. Regional anesthesia : its technic and clinical application . Fig. 14.—Manner of holding the syringe when it has been filled. The thumb is appliedto the plunger rod to prevent its displacement. The cover is screwed on to the barrel and the syringe filled withsolution, in the manner shown in Fig. 13, the eccentric tip beingturned toward the dorsum of the left hand. The syringe thus filled is 42 REGIONAL ANESTHESIA then held between the middle and forefingers of the right hand, withthe thumb resting on the cover against the plunger rod (Fig. 14), so asto prevent the occasional partial discharge Stock Photo

RM2CE209W–. Regional anesthesia : its technic and clinical application . Fig. 14.—Manner of holding the syringe when it has been filled. The thumb is appliedto the plunger rod to prevent its displacement. The cover is screwed on to the barrel and the syringe filled withsolution, in the manner shown in Fig. 13, the eccentric tip beingturned toward the dorsum of the left hand. The syringe thus filled is 42 REGIONAL ANESTHESIA then held between the middle and forefingers of the right hand, withthe thumb resting on the cover against the plunger rod (Fig. 14), so asto prevent the occasional partial discharge

. The Street railway journal . ensitive toregulate to 0.5 per cent in load variations from zero to 125 percent. Roller bearings are provided in the governor bearings andthe principal mechanism consists of two balance levers, whichare connected to an eccentric sleeve which surrounds the shaft,and which is pivoted at one side, so controlling the throw of theeccentric rod to a nicety. The pillow blocks for the crank shaft have the cover fitted in adiagonal position, and the shell is provided with an oil chamberwith recesses for the oiling chains. The engine frame is extended with stuffing box exp Stock Photo

RM2CRB664–. The Street railway journal . ensitive toregulate to 0.5 per cent in load variations from zero to 125 percent. Roller bearings are provided in the governor bearings andthe principal mechanism consists of two balance levers, whichare connected to an eccentric sleeve which surrounds the shaft,and which is pivoted at one side, so controlling the throw of theeccentric rod to a nicety. The pillow blocks for the crank shaft have the cover fitted in adiagonal position, and the shell is provided with an oil chamberwith recesses for the oiling chains. The engine frame is extended with stuffing box exp

. The railroad and engineering journal . ff the ham-merman moves two of these boxes, which transmit themotion to the other two through the toothed sectors, andthus, through this eccentric movement, the rollers B R aremade to approach each other, or to separate. The rod Eis worked by the hand-lever L. The spring S serves to regulate the contact of the rollers,so that the hammer may be kept slightly raised when therollers are in motion, and without touching the lever L, insuch a way that the work required to raise the hammer isvery slight when the tension of the spring is sufficient. The require Stock Photo

RM2CRDW08–. The railroad and engineering journal . ff the ham-merman moves two of these boxes, which transmit themotion to the other two through the toothed sectors, andthus, through this eccentric movement, the rollers B R aremade to approach each other, or to separate. The rod Eis worked by the hand-lever L. The spring S serves to regulate the contact of the rollers,so that the hammer may be kept slightly raised when therollers are in motion, and without touching the lever L, insuch a way that the work required to raise the hammer isvery slight when the tension of the spring is sufficient. The require

. The Street railway journal . oves atthe top and bottom of the main bearing, as ordinarily made, inthis system, the bearing is cut away at the joint. When thestrain from the connecting rod is up, the oil is carried to the bottom of the bearing, but when the load is reversed there areno oil grooves to carry away this oil. The crank pin is oiledthrough the tube marked D. This tube discharges into a crankoil ring inside the eccentric K, which in turn discharges intothe crank pin oil tube, and flows across the crank pin bearing.The crank pin oil ring, in addition to its independent supply,catches Stock Photo

RM2CGPDX2–. The Street railway journal . oves atthe top and bottom of the main bearing, as ordinarily made, inthis system, the bearing is cut away at the joint. When thestrain from the connecting rod is up, the oil is carried to the bottom of the bearing, but when the load is reversed there areno oil grooves to carry away this oil. The crank pin is oiledthrough the tube marked D. This tube discharges into a crankoil ring inside the eccentric K, which in turn discharges intothe crank pin oil tube, and flows across the crank pin bearing.The crank pin oil ring, in addition to its independent supply,catches

. The Street railway journal . under all loadswithin the capacity of the engine. The arrangement adopted is illustrated in Fig. 2. The rockerarm is shown at A, and is attached to the high-pressure eccentricrod B, which is under the control of the governor. The rockerarm carries a link F, the upper end of which is connected to thelow-pressure rod C, which is attached to an eccentric fixed on theshaft. The high-pressure valve rod D is driven directly by theeccentric rod B, but the low-pressure valve rod E is connected tothe middle of the link F. In this way it partakes of a motion in-termediate Stock Photo

RM2CR5870–. The Street railway journal . under all loadswithin the capacity of the engine. The arrangement adopted is illustrated in Fig. 2. The rockerarm is shown at A, and is attached to the high-pressure eccentricrod B, which is under the control of the governor. The rockerarm carries a link F, the upper end of which is connected to thelow-pressure rod C, which is attached to an eccentric fixed on theshaft. The high-pressure valve rod D is driven directly by theeccentric rod B, but the low-pressure valve rod E is connected tothe middle of the link F. In this way it partakes of a motion in-termediate

. The railroad and engineering journal . linders, however, are considerably on one sideof the fore-and-aft center line. In order to work thevalve-rod common to these, an arm or connecting-rod istaken from each of the eccentric straps, and these armswork the link motion by means of a bell-crank lever at-tached to the engine-bed. In fig. i the arm of one eccen-tric can be plainly seen together with the bell-crank lever,and the connecting-rod carrying the motion to the solidbar link. The reversing links are placed one immediatelyin front of the other, and are pulled over by one lever anddrag link Stock Photo

RM2CRH4M2–. The railroad and engineering journal . linders, however, are considerably on one sideof the fore-and-aft center line. In order to work thevalve-rod common to these, an arm or connecting-rod istaken from each of the eccentric straps, and these armswork the link motion by means of a bell-crank lever at-tached to the engine-bed. In fig. i the arm of one eccen-tric can be plainly seen together with the bell-crank lever,and the connecting-rod carrying the motion to the solidbar link. The reversing links are placed one immediatelyin front of the other, and are pulled over by one lever anddrag link

. Machinery for metalliferous mines : a practical treatise for mining engineers, metallurgists and managers of mines. 5), as it isnow termed, only resembles the original machine by adherence to the ROCK-BREAKERS. 223 broad fundamental principles on which its construction was based. Thestone-breaker is driven in the usual way by a pulley (q) upon a crank (f)instead of an eccentric shaft. Upon this shaft a connecting rod (g) isattached, and at the lower end of the connecting rod is spindled oneend of a solid crucible steel lever, the other end of which is fulcrumedto the main frame. As the conne Stock Photo

RM2CENE68–. Machinery for metalliferous mines : a practical treatise for mining engineers, metallurgists and managers of mines. 5), as it isnow termed, only resembles the original machine by adherence to the ROCK-BREAKERS. 223 broad fundamental principles on which its construction was based. Thestone-breaker is driven in the usual way by a pulley (q) upon a crank (f)instead of an eccentric shaft. Upon this shaft a connecting rod (g) isattached, and at the lower end of the connecting rod is spindled oneend of a solid crucible steel lever, the other end of which is fulcrumedto the main frame. As the conne

RM2CEH70D–. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled 'Mechanical movements, powers and devices' ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 207. TRIPLE EXPAN-SION VALVE GEAR withsingle eccentric. A, eccentricstrap stay arm, which also oper-ates the high-pressure valve rod.B, bell-crank rock shaft thatoperates the medium - pressurevalve rod, linked to eccentricarm. C, rocker arm, shaft, andbell-crank conne

. The railroad and engineering journal . motion of lap +lead being given to the valve by a connection from thepiston-rod cross-head. Those who saw the Belgian Statelocomotives shown at the late Paris Exhibition would ob-serve the latest example of the Walschaert gear, and it isidentically the same as what we have described as theoriginal Waldegg gear. Kitson does away with the eccentric motion, but stilluses a circular motion received from the crank-pin, andinstead of using the vibrating link he uses a bell-cranklink. Fig. 11 shows this gear applied to a marine engine,and fig. 10 shows the Wal Stock Photo

RM2CPN4T8–. The railroad and engineering journal . motion of lap +lead being given to the valve by a connection from thepiston-rod cross-head. Those who saw the Belgian Statelocomotives shown at the late Paris Exhibition would ob-serve the latest example of the Walschaert gear, and it isidentically the same as what we have described as theoriginal Waldegg gear. Kitson does away with the eccentric motion, but stilluses a circular motion received from the crank-pin, andinstead of using the vibrating link he uses a bell-cranklink. Fig. 11 shows this gear applied to a marine engine,and fig. 10 shows the Wal

. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . VALVE MOTION. 175 thence through the steam pipes E to the steam passageF in the cylinder saddle and to steam-chest G. Whenthe port is uncovered by valve H for the admission ofsteam to the cylinder, the piston is forced to the oppo-site end, thus transmitting its power to the crossheadand main rod, thence to the pin, wheel and rail, and fromthe journal and eccentric to the valve motion, giving theforward and backward motion to the valve, shutting offthe admissio Stock Photo

RM2CGXXH4–. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . VALVE MOTION. 175 thence through the steam pipes E to the steam passageF in the cylinder saddle and to steam-chest G. Whenthe port is uncovered by valve H for the admission ofsteam to the cylinder, the piston is forced to the oppo-site end, thus transmitting its power to the crossheadand main rod, thence to the pin, wheel and rail, and fromthe journal and eccentric to the valve motion, giving theforward and backward motion to the valve, shutting offthe admissio

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