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 348
nner. ELECTRIC LIGHTING 2,439 The cut out and substitutional resistance is usually a part ofthe lamp and is illustrated and fully explained in fig. 3,351which shows the elementary differential lamp of fig. 3,339 fittedwith the above features and also ring clutch rod feed. Enclosed Arcs.—The… … Fig. 3,352.—Adams-Bagnall cut out as used in alternating current series circuit differentialcontrol arc lamp. The cut out has four rubbing contacts of coin silver. One member isloosely hinged to the lower yoke. The two contacts are set in a plate, properly insulatedfrom the hinged portion. The…
Electrical engineering
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