Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 192
by current drawn from the third-railshoes. (3) A piping and reservoir system by means of which the unit switchesand reservoir are operated. The remaining parts are not essentially different from thoseof the other system. 164 ELECTRIC RAILWAYS 69 Unit Switch. The unit switch is shown in… … Fig. 69. Westinghouse Unit Switch Cyl-inder and Magnet Valve Fig. 70. Details of Blow-Out Coils, West-inghouse Unit Switch allowed to enter at the bottom of the cylinder and it pushes thepiston upward, against the resistance of the coiled spring, and closesthe switch. When the exciting circuit is…
Electrical engineering
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