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