{TAIL ~ A horizontally extending shaft} 16 is also rotatably supported in the side plates 6, 7 and has {HEAD ~ eccentrics} 17 mounted thereon 
{ TAIL ~ A horizontally extending shaft } 16 is also rotatably supported in the side plates 6 , 7 and has { HEAD ~ eccentrics } 17 mounted thereon
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH