The ratchet wheel has an annular groove around the periphery, and {HEAD ~ a plurality} of {TAIL ~ teeth} equiangularly spaced around the annular groove 
of
The ratchet wheel has an annular groove around the periphery , and { HEAD ~ a plurality } of { TAIL ~ teeth } equiangularly spaced around the annular groove
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH