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 508
Figs. 4,568 to 4,571.—Hanson and Van Winkle swing type, circular steel wire, casting brush.The steel wires are twisted in knots and the knots are hung on rods around the hub, asshown in fig. 4,571, so that they will turn around the rods if the work be held too close tothe brush wheel. In using the…
Electrical engineering
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