Upper and lower pairs of {HEAD ~ yarns} illlustrated at 11a, {TAIL ~ 12a} and 13a, 14a, respectively, are fed to upper and lower air jet devices carried by the mounting means B which is illustrated in the form of an upright standard 
illlustrated at
Upper and lower pairs of { HEAD ~ yarns } illlustrated at 11a , { TAIL ~ 12a } and 13a , 14a , respectively , are fed to upper and lower air jet devices carried by the mounting means B which is illustrated in the form of an upright standard
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH