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 124
,two or more wires may be wound together in parallel. According to the mechanical features and manner of assem-bling on the core, drum windings may be divided into severalclasses, as follows: 1. Hand winding; 2. Evolute or butterfly winding; 336 HAWKINS ELECTRICITY 3. Barrel winding;4 Bastard… … Figs. 369 and 370.—Evolute and straight out connectors. In small machines the connectorsmust be curved as in fig. 369, but in large machines, especially where the teeth are wide,they may be straight as in fig. 370. These connectors may take either of the followingforms: 1. involute or evolute…
Electrical engineering
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