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 495
f each of four different units, known respectively as theswitch, the cylinder, the magnet valve and the blow out coil, these being described in theaccompanying cuts. 2,586 HAWKINS ELECTRICITY to the supply. For maximum effort the external resistances may nowbe progressively cut out resulting in… … Fig. 3,641.—Westinghouse standard reverser, covers removed. The reverser comprises anumber of copper fingers mounted on a stationary base, and pressing on one or the otherof two sets of movable contact carried on a wooden drum. The drum is revolved to theforward or the reverse position by one or…
Electrical engineering
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