angle h is defined in such a way that the highest point 30 on the top edge 28 of the bulge 13 situated near the reed 3 shall first make contact with said lower warp plane 18 it must be borne in mind in this respect that the warp planes 17 and 18 have moved apart so they attain the position shown in fig2 when the auxiliary nozzles 8 penetrate the lower warp plane 18 as shown in fig7 the warps guided through the dents 38 of the reed 3 are deflected by the auxiliary nozzle 8 as this nozzle moves through the warps of the lower warp plane 18 these warps then are stretched in the process the warps 18 rest against the sidewalls 27 33 of the bulge 13 and against the dents 38 of the reed 3 as a result the warps 18 near the blow aperture 25 of the auxiliary nozzles 8 shall be tensioned as a result of tensioning the warps formed of several adjacent thin filaments these filaments therefore shall be slightly compressed against one another consequently the airjet 7 from the auxiliary nozzles 8 is less able to penetrate between the individual filaments hence warp fraying unraveling will be reduced as shown by fig4 and 5 the cross section of the inner volume 36 of the hollow needle 11 of the auxiliary nozzle 8 expands at the level of the bulge 13 direction of arrow 37 in fig5 on account of this bulge 13 in the embodiment mode shown in fig8 through 11 the auxiliary nozzle 8 also is fitted with lateral bulge 13 pointing toward the reed 3 the top edge 28 extends over the hollow needle 39 s tip and across the bulge 13 and subtends an.