This lateral shifting of the fork 51 and {HEAD ~ its motor} 52 by eccentric 58 is guided by a roller 60 secured to a link 61 carried by {TAIL ~ the fork 51 and motor 52 assembly} 
This lateral shifting of the fork 51 and { HEAD ~ its motor } 52 by eccentric 58 is guided by a roller 60 secured to a link 61 carried by { TAIL ~ the fork 51 and motor 52 assembly }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL