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 77
Core Of SignalMagneto SubscribersTelephone Set … Cut Off SpringRing Spring Of JackTip Spring Of Jack Fig. 2,985.—How the magneto system works: 1. The diagram illustrates the telephone atthe subscribers station, the line, jack, and signal on which the line terminates at theswitchboard. 4. Bell out of adjustment. 5. Open auxiliary bell. Effect: Can…
Electrical engineering
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