The device which is best seen in FIG 2 is used for effecting {HEAD ~ the vertical shifting} of {TAIL ~ the upper feed roller} 10 
of
The device which is best seen in FIG 2 is used for effecting { HEAD ~ the vertical shifting } of { TAIL ~ the upper feed roller } 10
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH