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 1078
Fig. 436 an armature coil of many turns showing how the induced e. m. f. of each turn adds itself to that of other turns mutator bar and the coil of the armature varies in differentdesigns. Some builders solder the terminals of the coilsto the commutator bars; others bolt the terminals of thecoils… … Fig. 437and form the armature coil in such a manner that bothends of the coil become commutator bars, making the coilcontinuous from one end of the commutator bar to the endof the diametrically opposite commutator bar. To increase the electro-motive force. The greater the 1044 Steam Engineering…