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 302
ency e is the product, of the efficiencies of all the several parts of the hoisting mechan-ism, such as pulleys, windlass, gearing, etc. Methods of calculating these efficiencies, withexamples, are given at length in the origina1 paper by Mr. Peters. 2,956 HAWKINS ELECTRICITY Ques. What are… … Fig. 4,237.—Niles electric mono-rail hoist, built in capacities from three-quarters to six tons.They will run on straight and curved tracks, and are generally provided with a separatemotor for traversing. The hoist is self-contained in one heavy cast iron frame to whichthe motors are attached end…
Electrical engineering
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