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 275
operator abouteight feet in which to bring the car to a stop from full speed. A skillfuloperator can readily do this, but an unskillful one may require a muchlonger distance. Sudden Reversal.—On account of the waste of power and thestrain on the apparatus, it is advisable not to suddenly reverse… … Fig. 4,201-.—Machine limit stop or safety device placed on the machine to prevent over travelin case the stops on the shipper rope become inactive by the breaking of the rope. Itconsists of a threaded extension A on the drum shaft upon which a traveling nut Emoves in a fixed ratio to the movement…
Electrical engineering
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