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 274
the car shouldbestartedgradually, althoughaverage speed be maintained between floorsrapid. power is required than after the car has reached itsstart the greater this abnormal power and the greaterequipment. stopping of the car produces a severe stressIf the stops be made within the distance … Fig. 4,200.—Cutler-Hammer direct or alternating current single pole shaft limit switch.It consists of a slate base on which is mounted a pivoted arm carrying a large roller atone end and a carbon contact button at the other. A coiled spring, bearing against theroller end of the pivoted arm tends to…
Electrical engineering
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