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 261
toward the magnet the circuit maintainer trips andits spring causes it to move to the continuous ringing position,thus switching terminal A wire to contact breaker via trip 2,352 HAWKINS ELECTRICITY lever. With this circuit it is evident that the bell will continueringing irrespective of whether… … 5TARTINS CIRCUIT SPRING ADJUSTMENT CIRCUIT MAINTAINERSPRING CONTINUOUS RINGINGOR CLOSED POSITION INITIALOROPEN POSITION MECHANICAL CIRCUITMAINTAINER Fig. 3,211.—Elementary continuous ringing bell with mechanical circuit maintainer. It isessentially an ordinary vibrating bell fitted with a…
Electrical engineering
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