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 296
e rise to a retarding torque. The eddy currentsand the consequent torque are regulated by varying the strengthof the magnet by means of a regulating switch and resistance. 2,950 HAWKINS ELECTRICITY Rheostatic Brake.—For this form of braking, the controlleris provided with several positions on the… … Fig. 4,229.^—Shaw overhead wharf crane. The handling of freight at a marine terminal presentstwo distinct but closely related problems: the loading and unloading of ships and thedistribution of freight on the pier. The crane here shown is designed for such service andtravels on tracks carried above…
Electrical engineering
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