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 474
FlGS. 3,542 to 3,547.—Various construction details of General Electric commutating polerailway motor, fig. 3,542, exciting field coil and supports; figs. 3,543 to 3,545 details of com-mutating field coil and supports; fig. 3,546, brush holders; fig. 3,547, malleable iron gear case. ELECTRIC… … Fiq. 3,548.—Ordinary rheostatic controller, designed to control one or more motors by meansof resistance only. As shown, it consists of a switch cylinder A, carrying nine insulatingsupports upon which are mounted nine metallic conducting segments B, B, B. Thesesegments differ in length and…
Electrical engineering
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