Jet operated weaving machine

Claim 1

A jet-operated weft inserting apparatus for a weaving machine having (a) a pair of warp sheets which are reversibly movable between two diverging warp planes, (b) a reed which is movable between a beating position and a retracted position in which it forms with the warp sheets a plurality of successive sheds of generally triangular cross-section, and which comprises blades each of which extends between adjacent warp threads and has a beating edge in the form of a notch the upper edge of which extends slightly below the upper warp plane and the lower edge of which extends slightly above the lower warp plane in the retracted position of the reed, (c) a series of substantially rectilinearly arranged nozzles which are adapted to be supplied with fluid under pressure, and (d) a mounting which is movable in synchronism with the movement of the reed and which supports each nozzle relative to the reed in such a position that it projects into each shed in the retracted position of the reed, wherein the improvement comprises an orifice which is located in each nozzle adjacent to the lower edge of a notch in a reed blade, and is directed substantially longitudinally of the shed, the distance between each orifice and the beating edge of the adjacent reed blade being less in the case of orifices more remote from one longitudinal end of the shed than it is in the case of orifices less remote from such end of the shed.