A device 3 wherein said clamp means is comprised of a rigid clamp block and {HEAD ~ a movable clamp pad} so as to permit {TAIL ~ a flexible sheet} of foam material to be clamped therebetween 
to permit
A device 3 wherein said clamp means is comprised of a rigid clamp block and { HEAD ~ a movable clamp pad } so as to permit { TAIL ~ a flexible sheet } of foam material to be clamped therebetween
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH