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