Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 94
e type of Westinghouse manufacture. Brushholders should provideadjustment as to posi-tion and tension of thebrushes, and allow thelatter to follow any ir-regularity in the com-mutator surface. Thebrush-holder springsshould be arranged sothat the brush pressureis maintained constantduring the life… … Fig. 48. ARMATURES. 83 trie Company brush-holder arm is shown complete inFig. 49. The brush-holder arms are carried on rings, calledrockers, which are mounted concentric with the commuta-tor, either on a sleeve at the front bearing or on the field
Electric machinery
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