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 257
speed of the driving pulley. If, however,the set of driving cable after passing over the pulley R and S be led under a pair of sta-tionary pulley and then have their free ends connected respectively to the traveling framesK, and b, instead of anchored at the fixed points NN, the speed of the car… … Fig. 4,180.—Otis 1 to 1 over mounted traction elevator machine, consisting essentially of aslow speed shunt wound motor, a traction driving pulley, and a magnetically releasedspring applied brake. Full magnet control is used. The motor is so governed as to preventexcessive speed regardless of load.…
Electrical engineering
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