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 1075
r bar to brush M instead of to P sothat the brush M is still positive. (See Fig. 432.) 1040 Steam Engineering This arrangement of commutator bars and brushes per-forms the duty of connecting the brush M to that part ofthe winding, and only that part which is moving down infront of a S-pole. As long… … Fig. 433 an armature coil connected to a two-part commutator, so as to deliver direct current The two brushes are placed as shown in Fig. 434. Inthis case the alternating electro-motive force will be re-versed or commuted at the proper instant, and there willbe a one direction electro-motive force…
