The air jet devices A are illustrated in FIG 2 and include {HEAD ~ a sleeve} 26 being internally threaded for {TAIL ~ reception} upon the line 24a as illustrated, or the line 25a and the like 
internally threaded for
The air jet devices A are illustrated in FIG 2 and include { HEAD ~ a sleeve } 26 being internally threaded for { TAIL ~ reception } upon the line 24a as illustrated , or the line 25a and the like
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH