In the illustrated embodiment, this is accomplished by mounting the timing disc 51 on a keyed shaft and providing {HEAD ~ a plurality} of {TAIL ~ offset keyslots} on the disc 51 
of
In the illustrated embodiment , this is accomplished by mounting the timing disc 51 on a keyed shaft and providing { HEAD ~ a plurality } of { TAIL ~ offset keyslots } on the disc 51
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH