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 192
an be employed for long or short dis-tances by reason of its lightness and th§ action of the groove, 404 HAWKINS ELECTRICITY Gear Drive.—This method is used where a positive drive isdesired, as for elevator or railway motors. It admits of anydegree of speed reduction without attending difficulties… … Pig. 453.—Watson vertical motor designed to operate a vertical shaft, either through be)tconnection, or by direct drive. Hess-Bright ball bearings are used, taking the downwardthrust due to the^ weight of the armature. For mounting on the floor or ceiling, a tripodbase (as shown) is furnished, the…
Electrical engineering
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