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 300
n of a circle, collector 2,954 HAWKINS ELECTRICITY gear is not necessary. Connection from the supply mains to the movingpart of the crane can be satisfactorily made by means of flexible armouredcable. Controllers.—The class of controller most commonly usedfor crane work is that known as the drum,… … Fig. 4,236.—Diagram showing method of mounting the Palmer safety limit stop. It is notgeared to the hoist nor operated by a traveling nut. Instead, a trip rope is used, one endof which is attached to a latch lever inside the enclosing case of the device while the otherend, after passing through a…
Electrical engineering
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