Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1211
e methods of winding used with bi-polarfields. As has been explained elsewhere there are many con-ditions where the use of a bi-polar field is not advisable^ andnumerous advantages are gained by using a multi-polar field,or a field consisting of more than one pair of poles. The same general… … Fig. 525 schemes of winding which are in the main only extensionsof the principles here shown. Fig. 524 shows an armature winding, with its develop-ment. Fig. 525, consisting of 18 conductors and a 4-polefield. Following out the circuits from one commutator seg-ment to the next or the developed…
