The upper roller 37 is rotatably supported on {TAIL ~ a shaft} 39 which extends through {HEAD ~ a bearing support} 72 and carries a flywheel 71 
The upper roller 37 is rotatably supported on { TAIL ~ a shaft } 39 which extends through { HEAD ~ a bearing support } 72 and carries a flywheel 71
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH