After the taking up of {HEAD ~ a sheet} of {TAIL ~ glass} by the upper form, a current of hot gas is blown under the glass sheets in order to produce a pneumatic pressing 
of
After the taking up of { HEAD ~ a sheet } of { TAIL ~ glass } by the upper form , a current of hot gas is blown under the glass sheets in order to produce a pneumatic pressing
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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