{TAIL ~ The eccentric discs} 213 and the cranks 223 are all mounted with their lines of {HEAD ~ throw}, in parallel and parallelism is maintained as the cranks 223 and eccentric discs 213 rotate 
{ TAIL ~ The eccentric discs } 213 and the cranks 223 are all mounted with their lines of { HEAD ~ throw } , in parallel and parallelism is maintained as the cranks 223 and eccentric discs 213 rotate
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH