Thus, motor 23 may have {TAIL ~ multiple poles} {HEAD ~ 47a} through 47d, for example, as symbolized in FIG 4a, which can be switched into and out of the motor circuit as required 
Thus , motor 23 may have { TAIL ~ multiple poles } { HEAD ~ 47a } through 47d , for example , as symbolized in FIG 4a , which can be switched into and out of the motor circuit as required
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH