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 225
ugh fields remaining un-changed, accordingly by crossing the connections between the upper and lower I contactsthe motor is reversed when lever C is moved in opposite directions. ELECTRIC ELEVATORS 2,879 the motor and winding mechanism are direct connected which is theform in most general use. The…
Electrical engineering
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