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 254
being ELECTRIC BELLS 2,345 sufficient to cause the hammer to overcome the spring action ofthe lever and hit the bell, the lever causing the hammer tospring back out of contact with the bell. As sometimes constructed, the stop S is made non-adjustable, or isomitted, in which case adjustment is made… … Fig. 3,204.—Mesco single stroke bell. The hammer rod has a short leverage but a longsweep, thus enabling it to give rapid and powerful blows. A stiff flat spring causes thehammer to leave the bell immediately after striking. The magnets of this bell are regularlywound for 6 ohms, and special for…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
