Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 277
p for someunknown reason, the operator should at once shift his controllingdevice in the car to the off position. If, then, upon shifting the con-trolling device again to start, the car refuse to move in either direction,some one of the following occurrences has probably taken place: Itmay be that… … Figs. 4,204 and 4,205.—Cutler-Hammer direct or alternating current double pole slack cableswitch for use with controllers. Fig. 4,204, case closed; fig. 4,205, open. In con-struction the switch is enclosed in a cast iron case from which projects a shaft designedfor attachment to the slack cable arm…
Electrical engineering
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