. The Street railway journal . Street Ry..T,. 26 STREET RAILWAY JOURNAL. [Vol. XIV. No. i. ing current to switch the cars for the New York and Brook- The special feature of this engine is the valve gear, lyn Bridge and operate the same at night or in case of The valves are of the Porter-Allen type already described, emergency. Fig. 22 is a vertical elevation, Fig. 23 a side The governor is also of the Porter-Allen type shown in elevation, and Fig. 24 a plan view of the same. Each has Fig. 19. The link motion is, however, of the radial type a steam cylinder 30^ ins. diameter by 36 ins. stroke,
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. The Street railway journal . Street Ry..T, . 26 STREET RAILWAY JOURNAL. [Vol. XIV. No. i. ing current to switch the cars for the New York and Brook- The special feature of this engine is the valve gear, lyn Bridge and operate the same at night or in case of The valves are of the Porter-Allen type already described, emergency. Fig. 22 is a vertical elevation, Fig. 23 a side The governor is also of the Porter-Allen type shown in elevation, and Fig. 24 a plan view of the same. Each has Fig. 19. The link motion is, however, of the radial type a steam cylinder 30^ ins. diameter by 36 ins. stroke, and which derives its motion entirely from a point in the con-. street Ry. Journal FIG. 22 FIG. 23 FIG. 24 VERTICAL, NON-CONDENSING PORTER-ALLEN ENGINE—NEW YORK AND BROOKLYN BRIDGE is designed to run at a speed of 100 r. p. m. with a steam case, the principal difference being in the manner or way pressure of 100 lbs. Each is provided with a flywheel the link is operated. The exhaust valves give a constant 16 ft. in diameter and weighing 36, 000 lbs. The crank- release and compression as in the other case. The shaft is carried in two bearings which are connected to housings consist of a heavy cast iron rear column car- if