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 514
1, thus eliminating the re-sistance used with the independently wired head light and effecting agreat saving of current. ELECTRIC RAILWAYS 2,605 The following brief descriptions give the essential features ofsome typical axle lighting systems. The Stone System.—This equipment was invented in 1895… … Fig. 3,672.—Safety Lighting Co. axle driven dynamo. It is a four pole machine, with singleshunt winding designed to give sparkless commutation at varying speeds and varyingloads met with in car lighting. The frame is a one piece steel casting, the supportinglugs being cast solid with the frame.…
Electrical engineering
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