Abstract: In order to remove waste slivers produced by cutting false selvedges in a weaving loom, at least two slivers are introduced into a rotating feed duct and subjected to a false twist, thus automatically balancing the tensions of the different slivers. The cord thus formed falls down from the feed duct outlet onto a delivery coiler on which the spiral turns are successively allowed to slip off the rotating coiler under the control of a brake system and then discharged into a can.

Abstract: Weft measuring device for weaving looms, and in particular for shuttleless looms where the weft is cast through a shed by a pressurized mechanism or by the energy communicated to the mass of the yarn by a casting mechanism. The device has a pair of propelling rollers driven in rotation which form a gripping line between which the weft yarn is introduced intermittently by way of elements actuated in relation to the weft casting program. At least one of the rollers has a structure such that the end of the gripping line toward which the yarn is conveyed at the start of measurement moves regularly and synchronously with the cycle of the loom.

Abstract: The invention relates to the textile industry and, more particularly, to weaving machines.The device comprises: a support (1) to be fixed on the weaving machine; a first lever (2) oscillating on the said support and provided with at least one tongue (3) which has at its end an eye (27) for guiding an additional warp thread; a second lever (6) also oscillating on the support (1) and provided with two bars (7) which are mounted in sliding fashion against each other in a direction parallel with the fell and which each have at least one eye for guiding a crossing thread; means (15, 16, 34, 35) for actuating pivoting of the two oscillating levers (2, 6); and means (49, 55, 65) for actuating sliding of the bars (7) for guiding the crossing threads, arranged so that each crossing thread passes alternately on either side of the corresponding additional warp thread.The invention is applicable to shuttleless weaving machines.

Abstract: A web of fibers delivered from a drawing machine is assembled into a sliver which passes into a guide duct, then passes between takeup rollers into a can coiler. Downwardly inclined air-escape holes are pierced in the wall of the guide duct in order to discharge the air entrained by the sliver. There is consequently no swelling of the sliver on the delivery side of the takeup rollers and no pressure rise towards the guide duct inlet, thereby facilitating the introduction of the web into the duct.

Abstract: The invention relates to mechanisms for uncoupling two rotating elements. The device includes a positive clutch sliding on a rotating drive element and subjected to the action of a return spring, an energy storage spring stronger than the return spring and designed to disengage the positive clutch, a cam connected to the drive element and designed to tension the energy storage spring, a pawl capable of keeping the energy storage spring tensioned, and an electromagnet intended to actuate uncoupling and connected to the pawl so as to release the energy storage spring. The device is applicable to temporary uncoupling of two coaxial rotating elements in particular in weaving looms, in order to uncouple the crankshaft from the loom and its main motor from the dobby shaft and its auxiliary control motor.

Abstract: A weft-thread mixer device having: general control means; a rocker connected to each distribution finger; a slide and a pusher for putting the corresponding rocker positively into the active position; a slide and a pusher for putting the same rocker positively into the inactive position; thrust rods for connecting an axle of the general control means selectively to the corresponding slides for putting into the active position or for putting into the inactive position, according to one of the two possible positions of the thrust rods; and individual electromagnets controlling the position of each of the thrust rods. The invention can be used on weaving machines where it is necessary to mix the weft threads.

Abstract: The invention relates to a process for the insertion of a weft yarn in the shed of a weaving machine in which said weft yarn is drawn from a reserve located outside the shed to be inserted in the form of a loop of which one of the ends is fastened and the other thrown, wherein an air stream is blown in the shed in the direction of insertion of the weft, the speed of this air stream being less than or at the most equal to the speed of the thrown end, the action of this air stream being such that it tends to maintain the two ends of the loop separate from each other.

Abstract: A device adapted to be introduced into the shed of a weaving loom. The device is designed to facilitate insertion of a weft by an air stream. The device has a plurality of leaves which are spaced apart to allow the passage of the warp yarns. The leaves are placed in front of the reed and are provided with a recess, which recess is situated opposite the teeth. A portion of the reed, opposite to the recess, has a sharp-edged profile while the remaining portion has a round and smooth edged profile.