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 100
ush contact face? Ans. It may be taken as one and one-half times the thicknessof the commutator segments. 312 HAWKINS ELECTRICITY Ques. How wide should a carbon brush contact be? Ans. The brush should be thick enough to cover two andone-half commutator segments. The thickness should in nocase be… … Fig. 339.—Contact angle for the different types of brush. At A is shown a brush withtangential contact, and at B, a so called tangent brush; the latter is properly called aninclined brush. Sheet copper brushes are set tangentially as at A, and gauze brushesinclined as at B. Carbon brushes are…
Electrical engineering
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