The teeth of the first plate sprocket 64 are configured so as to mesh with {HEAD ~ the teeth} of a linking sprocket 68 which engages {TAIL ~ the worm gear sprocket} 36 when the tubing reel is mounted upon the support shaft 50 
engages
The teeth of the first plate sprocket 64 are configured so as to mesh with { HEAD ~ the teeth } of a linking sprocket 68 which engages { TAIL ~ the worm gear sprocket } 36 when the tubing reel is mounted upon the support shaft 50
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH