While {HEAD ~ the drive ring} revolving at {TAIL ~ the slow speed} can be coupled with the program carrier in seven different angular positions, for the drive ring which revolves once a day only a single angular position exists in which it can be coupled with the program carrier 
revolving at
While { HEAD ~ the drive ring } revolving at { TAIL ~ the slow speed } can be coupled with the program carrier in seven different angular positions , for the drive ring which revolves once a day only a single angular position exists in which it can be coupled with the program carrier
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH