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- · New York, T. Audel · leaf 150
a w C3 U s Si 1,138 HAWKINS ELECTRICITY Ques. How is this done? Ans. Sometimes by an idler pulley, but usually by mountingthe machine on a sub-base provided with slide rails, as in fig.1,381, the belt being tightened by use of a ratchet screw whichmoves the machine along the base. … Fig. 1.383.—Diagram illustrating rule for horse power transmitted by belts. A single belttravelling at a speed of i.ooofeet per minute will transmit one horse power: a double belt willtransmit twice that amount, assuming that the thickness of a double belt is twice that of asingle belt. This is…
Electrical engineering
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