Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1094
pidly that unless the attendant immediately sets aboutto right it, a burned out armature is almost sure to be theconsequence sooner or later. In alternating current dyna-mos, where brushes rest on collector rings instead of com-mutators, it is much easier to keep out of trouble, becausethe brushes… … Fig. 451 has to deal. Great care should be taken that the brushes setsquarely on the commutator, and that the surface of thebrushes and commutator are as smooth as possible. It is agood plan, and in some cases the brush-holders are somade, that the brushes set in a staggering position, that isto…
