{HEAD ~ The upper end} of {TAIL ~ the ratchet housing} 92 and the lower end of the J slot sleeve 136 create a stop which limits the upward motion of the mandrel 22 relative to the drill string 32 
of
{ HEAD ~ The upper end } of { TAIL ~ the ratchet housing } 92 and the lower end of the J slot sleeve 136 create a stop which limits the upward motion of the mandrel 22 relative to the drill string 32
HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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