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