International Library of Technology · Scranton, International Textbook Co. · leaf 492
cal position, all the ports are againblocked and the air in the brake cylinder must remainthere and keep the brakes set. By moving the valve handleto the left, ports B^ and E^ are connected, thereby allowingthe air in the brake cylinder to escape to the atmosphereand permitting the release springs… … /. IV.—S3 56 ELECTRIC RAILWAYS. 25 73. Positions.—Fig. 70 is a top view of the Christensenvalve as it appears on a car. The dotted circles indicatethe exhaust, reservoir, and brake-cylinder connections, asmarked. There are five positions—namely, lap, service stop,emergency stop, slozv release and…
Electrical engineering
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