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 280
revolution. ELECTRIC BELLS 2,371 Bells of this description are designed to operate on battery pressuresof six volts and higher, also lighting circuits of 110 volts alternating anddirect. A powerful blow is obtained by the revolving stroke of thesebells, because of the amplitude of the stroke, which… … SERIES MOTOR Tig. 3,249.—Elementary motor driven, or revolving strike bell. The series motor has arevolving member attached to the shaft and an eccentrically pivoted clapper at eitherend, which in operation delivers two blows to the bell at each revolution of the motor.A desirable type of bell for…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
