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 131
Fig. 381.—Method of v/inding ovolute coils. In preparing the former, it is necessary to knowthe dimensions of the coil, hence, a pattern coil must first be made, from which the spacingof the pins can be tak~n so that the complated coil will fit into the slots for which it isintended. After the pins…
Electrical engineering
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