. The street railway review . TKOI.LEV SUPPORTS AT DKAW. driven by a General Electric motor of the encased street railwaytype, attached to the main shaft of the pump. On the fixed spans approaching both ends of the bridge are steeltruss gates which are operated by electric motors placed under-neath the floor of the bridge, the operation is controlled entirelyfrom the operating rooirr of the drawbridge. The gates swing intwo parts and when not in use are in line with the curbing anddirectly over it. The current is carried to the gate motors by asubmerged armor cable. The entire operation of the
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. The street railway review . TKOI.LEV SUPPORTS AT DKAW. driven by a General Electric motor of the encased street railwaytype, attached to the main shaft of the pump. On the fixed spans approaching both ends of the bridge are steeltruss gates which are operated by electric motors placed under-neath the floor of the bridge, the operation is controlled entirelyfrom the operating rooirr of the drawbridge. The gates swing intwo parts and when not in use are in line with the curbing anddirectly over it. The current is carried to the gate motors by asubmerged armor cable. The entire operation of the bridge, including movements of gatesand draw, is conducted from a small building, or cab, carried ongirders between the posts of the center tower and over the road-way. The one room is 12 ft. square with windows on all four. II, W I-KO.M l-AIKHAVKN KNI). sides, and is reached by an iron stairway from the sidewalk. Theturning motors, pump motors and gate nrotors are operated byGeneral Electric controllers of the railway type. There is a switch-l)oard with a main switch, and a switch and circuit breaker for eachmotor, also a voltmeter, ammeter and a recording wattmeter. Thecurrent used is the street railway direct grounded circuit from 510to 560 volts. The resistance boxes for the turning motors are car-ried on a platform attached lo the outside of the building. Thosefor the gate motors and puntp motors are in a case on the floor onone side of the rf>om, the cover to this case forming a scat. With-in convenient reach of the controllers are double acting hydrauliclever valves, made by the Watson-Stillman Co., which operate theend jacks and the rams for the end blocks. The hydraulic brakesarc applied by a valve similar to those on the rams and blocks but