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