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 267
wo worms, usually forged solid to one shaft are em-ployed; one, a right hand worm, and the other left hand. Theseworms mesh with two gears of equal size. As originally designed by the inventors, the worm gears used weremade with straight faces, the teeth being cut at the angle of the threadof the… … Figs. 4,190 and 4,191.—Early design of tandem worm drive machinery in which the two gearwheels meshing with the two worms, mesh with each other. In construction, thegears are of bronze, cut on a spiral gear cutter, and the worms are a part of the steel wormshaft. The motor C is equipped with…
Electrical engineering
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