Apparatus for guiding weft yarns in a jet loom

摘要

An apparatus is provided for guiding a weft yarn into the shed of a jet loom by a number of weft guiding members, each having an aperture with an opening. The weft guiding members are composed of a first group of weft guiding members of which the openings are of a relatively narrow width and formed in upper parts of the weft guiding members in the first group, and a second group of weft guiding members of which the openings are of a relatively broad width and formed in side parts of the weft guiding members in the second group. In front of the opening in each of the weft guiding members in the second group are sub-nozzles each having at least one fluid outlet discharging a jet of fluid to assist the weft yarn in being inserted into the shed so that the fluid jet produced by the respective sub-nozzle is obliquely directed toward surfaces of the apertures of the weft guiding members in the first group downstream of the respective sub-nozzle with respect to the direction in which the weft yarn is inserted, which surfaces are positioned on the side opposite to the sub-nozzles.