Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1069
r bar to brush M instead of to P sothat the brush M is still positive, (See Pig. 432.) 1040 Steam Engineering This arrangement of commutator bars and brashes per-forms the duty of connecting the brush M to that part ofihe winding, and only that part which is moving down infront of a S-pole. As long… … Fig. 433 ait abmature coil connected to a two-part com mutator, so as to deliver direct current The two brushes are placed as shown in Fig. 434. Inihis case the alternating electro-motive force will be re-versed or commuted at the proper instant, and there willbe a one direction electro-motive…
