In the hollow shaft {HEAD ~ embodiment one} cooling {TAIL ~ shoe chamber} has an outlet in communication with the nozzle via the shaft 
cooling
In the hollow shaft { HEAD ~ embodiment one } cooling { TAIL ~ shoe chamber } has an outlet in communication with the nozzle via the shaft
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH