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