{HEAD ~ Apparatus} 1, further comprising means for measuring {TAIL ~ temperature} in the region of said mandrel, and means for controlling said translating means in accordance with the measured temperature 
{ HEAD ~ Apparatus } 1 , further comprising means for measuring { TAIL ~ temperature } in the region of said mandrel , and means for controlling said translating means in accordance with the measured temperature
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH 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