{HEAD ~ Such an unstable sheath} in a working width of any length is then pulled onto {TAIL ~ 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 
is pulled onto
{ HEAD ~ Such an unstable sheath } in a working width of any length is then pulled onto { TAIL ~ 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 OTH OTH OTH OTH OTH OTH OTH REL OTH REL REL TAIL 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