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 174
is sort of drive are its freedom from noise, itssimplicity and durability owing to the parts being enclosed. Chain Drive.—This form of drive is desirable for heavy service,as on very large trucks. It is a noisy and dirty mode of powertransmission, and when not enclosed is subject to rapid wear. In… … Figs. 4,071 and 4,072.—Diagrams showing the behavior of a chain on a sprocket of equal pitch,and on one of properly unequal pitch. The following quotation from an English authorityexplains the action: A chain can never be in true pitch with its sprocket. A pair of spurgears tend, to a certain…
Electrical engineering
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