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