An air blast from nozzle 52 passes through {TAIL ~ the stretched fabric} to impinge upon {HEAD ~ the surface} of the underlying sheet to hold it in place as the gripped top sheet is removed 
An air blast from nozzle 52 passes through { TAIL ~ the stretched fabric } to impinge upon { HEAD ~ the surface } of the underlying sheet to hold it in place as the gripped top sheet is removed
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH