{HEAD ~ Such an unstable sheath} in {TAIL ~ a working width} of any length is then pulled onto a stable screen drum 11 to which a coarse screen fabric 12 has already been applied to provide a space between wall 5 and screen drum 11 
{ HEAD ~ Such an unstable sheath } in { TAIL ~ a working width } of any length is then pulled onto a stable screen drum 11 to which a coarse screen fabric 12 has already been applied to provide a space between wall 5 and screen drum 11
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH