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 136
the machine will determine the over-lapping of the tape. Ques. What other kinds of retainer are used on smoothcore armatures? Ans. They require several binding ribbons or brass bandsplaced around the winding to prevent the inductors being thrownoff the core by centrifugal force. 348 HAWKINS… … Tig. 388.—Front view of large armature for direct connected dynamo, built by the GeneralElectric Co. Ques. How are the wedges made? Ans. They are usually made of well baked hard wood, suchas hornbeam, or hard white vulcanized fibre. Sometimes aspringy strip of German silver is used. MOTORS 349…
Electrical engineering
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