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 179
3LOIV-0(JT^POLE P/ECE Fig. 60 Sprague-General Electric Contactor Diagram rounding a movable plunger and capable of exerting a powerful pullthereon. The lower end of the plunger is attached to a switch armon the end of which is a copper contact finger which is one end of the … Fig. 61. Group of Sprague-General Electric Unit Switch circuit. When the solenoid is energized the contact piece is pulledinto firm contact with a stationary finger which forms the otherterminal of the circuit and the main circuit is thus closed. When nocurrent flows in the coil a spring restores…
Electrical engineering
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