{HEAD ~ A toothed front side} forced by {TAIL ~ the spring force} into engagement with the ratchet wheel in the box end 
forced by
{ HEAD ~ A toothed front side } forced by { TAIL ~ the spring force } into engagement with the ratchet wheel in the box end
HEAD 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