Abstract: In an air jet weaving machine having: a picking nozzle (61, 62) outside the shed (15); and a weft yarn deflector (7, 90, 23) disposed between such nozzle and the shed (15) and operative to keep the weft yarn (5) away from the shed in response to a machine stop signal caused by a disturbance, a conveying line (22) for the deflected weft yarn (5) is received in the sley (10). The conveying line (22) is closed at its entry end by an end member (24) into which a funnel (23) of the weft yarn deflector leads. A receiver (30) having a suction or intake duct (32) is disposed at the exit end of the conveying line, the duct entry aperture being so dimensioned that the exit aperture of the conveying line (22) leads freely into the extraction or exhaust duct (32) in all positions of the sley (10).

Abstract: In an air jet loom having a movable suction conduit operatively connected to a suction source, a particular fringe cutting mechanism and waste fringe removal mechanism are provided that minimize yarn waste and minimize loom downtime. The fringe cutting mechanism is mounted upstream of the loom temple with respect to the direction of fabric movement, and is actuated by the movement of the reed of the loom as the reed moves in a downstream path of movement. The movable suction conduit, in addition to capturing the picks from the main jet of the loom, comprises the waste removal mechanism for removing cut fringe so that no fringe binder yarns, or the like, are necessary. The fringe cutter includes an anvil block with a lifting stiff wire extending outwardly from it to lift fringe yarn to be cut onto the block surface so that it is engaged by a cutting blade rotated into contact with the block.

Abstract: An auxiliary member or accessory serves to reduce or limit the length of a weaving reed for the purpose of adapting it to the desired weaving width, so that the same reed can be used for differing weaving widths. The auxiliary member or accessory can be a stretching device or a detection device for the inserted weft threads. A flange of the auxiliary member is inserted between two reed lamallae or dents and is fixed on the rear side of the read by means of a locking element.

Abstract: The weft yarn control employs a weft clamping and severing device on each of the picking side and catching side of the weaving rotor. Each device includes a suction tube into which the end of the weft yarn can be drawn, a spring for guiding a weft yarn end between the spring and suction tube and a clamping lever for clamping the yarn when severing is to take place. In addition, each device has a pair of blades for cutting the exposed end of a weft yarn prior to beating-up so that the excess yarn can be drawn off through the suction tubes.

Abstract: A yarn end holding device for a loom, the device including a fluid channel along which a fluid flow is directed to draw the yarn end into the channel and clamp means positioned to receive the yarn end and hold it during beat-up.

Abstract: A retention nozzle is provided at the catch side of the weaving machine for clamping or retaining the weft thread end during severance of the weft thread by means of a shear. A transfer nozzle is also provided at the catch side. When the weft thread lies over the transfer nozzle after being severed, the transfer nozzle is supplied with blower air and subsequently the supply of blower air to the retention nozzle is interrupted. In this manner the weft thread end is withdrawn from a catch channel of the retention nozzle and blown into a catch channel of the transfer nozzle. During this operation, the weft thread end is conducted through an eyelet of a selvedge-laying needle and thereby transferred to the latter. The retention nozzle permits severance of the weft thread by means of the shear even before the weft thread is in alignment with the eyelet of the selvedge-laying needle and the transfer nozzle.

Abstract: When cutting the successive weft lengths after they have been inserted into the weaving shed, the tail ends are retained in a clamping device. Thereby shifting the weft lengths in the winding direction of the cloth is difficult. According to the invention this disadvantage is removed in that the clamping device comprises a stationary clamping element and a movable clamping element cooperating therewith and movable in the direction of the beating up movement of the reed.

Abstract: The auxiliary warp threads required in a shuttleless weaving machine to form a detachable catch selvage are guided through a special auxiliary reed. In the rest position, the auxiliary reed is positioned tightly against the main reed. The auxiliary reed is so guided in its motion that, in addition to the conventional beat-up motion coupled to the main reed, it also performs an additional displacement directed laterally outwards. As a result, a cutting strip is formed between the fabric and the catch selvage. The projecting filling ends held by the auxiliary warp threads are drawn into the catch selvage during this step. The length of filling yarn required for the cutting strip is drawn from the edge waste projecting over the catch selvage and therefore the waste in filling yarn is reduced by the size of the cutting strip width.

Abstract: A leno selvage and stretch nozzle system for an air jet loom utilizing a Venturi device receptive of pressurized air from the air jet system to provide vacuum at a tensioning nozzle mounted on the loom reed. The Venturi device exhausts into a second Venturi device, which receives the leno selvage to direct the leno selvage into a waste container.

Abstract: A structure for weaving without outer leno yarns on an air jet loom eliminates the auxiliary selvage from both sides of the fabric being woven. A mechanical filling yarn clamp is disposed between the filling detector and suction source on the right-hand side of the loom for holding the ends of the picks during weaving. A suction source nozzle is mounted adjacent and exterior of a fringe cutter downstream of the temples on the right-hand side for removing pick trimmings cut by the fringe cutter. A combined clamp and cutter is mounted on the left-hand side of the loom adjacent the fabric edge to provide acceptable fringe length without subsequent trimming.

Abstract: In a loom of the type in which a weft strand is projected in free flying fashion from one side of a warp shed to the opposite side thereof and which includes a lay rockable between a weft projecting position and a beat up position, a reed fixed on the lay for beating up the inserted weft strand into the fell of the fabric being woven when the lay moves to beat up position, and a strand reception tube carried on the lay for receiving the free end of the projected weft strand proximate to such opposite side, the improvement of a support for the reception tube which permits bodily pivotal displacement of the reception tube toward and away from the reed while pivoting with the lay.

Abstract: A thread clamp for textile yarns or the like comprises two clamping jaw supports which can be moved relatively towards and away from one another. Each of the clamping jaw supports carries a respective clamping jaw. The clamping jaw of one of the clamping jaw supports is constructed as a clamping hood which is seated upon a substantially block-shaped intermediate layer formed of a rubber-elastic or elastomeric material. The intermediate layer has a portion thereof seated in a form-locking fashion in a recess provided at a base plate at said one clamping jaw support. These measures enable particularly realizing an optimum clamping action due to the oscillation-dampening properties of the intermediate layer supporting the clamping surface.

Abstract: A jet weaving machine is provided with an inserting nozzle at one end of the shed, a guide channel (7) comprised of lamellae (3) (e.g., the reed dents) arranged over the width of the warp shed, for guiding the weft thread during insertion in the shed, a first weft thread monitor (8) disposed in the region of the far end of the shed for emitting a signal when the inserted weft thread has not reached its intended length, and a tensioning device (9) located beyond the first weft thread monitor (8) in the direction of weft insertion (A), for stretching, straightening, and holding (taut) the inserted weft thread until beating-up is performed. The tensioning device (9) is in the form of an element through which an auxiliary fluid flows to take the head of the inserted weft thread which projects out of the shed and bend it transversely away from the weft insertion direction (A).

Abstract: The edge yarn clamp for a weft yarn is provided with a push-on resilient shoe on the metal clamping jaw. The resilient shoe includes a curved clamping cap on a rearward part to reliably retain the shoe in place while permitting an ease of fitting-on.

Abstract: The flexible brake band is mounted between a fixed bracket and a movable carrier. The carrier has an arm which is telescopically mounted within a tubular arm mounted on the bracket and is biased by a spring away from the bracket. An adjustment screw is provided to adjust the tension of the spring and, hence, the brake band.

Abstract: In a method and apparatus for weaving in which a weft strand is projected in substantially free flight into the warp shed of a loom and is guided across at least a portion of the shed by a plurality of guides, preferably annular in shapes disposed in operative position within the shed in interdigitating with the warp threads, the guides being moved to and fro along an arcuate path for withdrawal to an inoperative position substantially entirely outside the shed and return within the shed and having an opening at a common point thereon to permit the inserted strand to egress therefrom during their withdrawal from the shed, the improvement of (a) engaging the inserted weft strand at spaced points along its length while the strand is within the shed and within the guides and (b) bodily displacing the strand outwardly through such common opening before the guides are withdrawn from said shed. The strand is ordinarily displaced in timed relation to the movement of the guides along their path.

Abstract: A method for inserting a measured weft thread length by means of a blowing nozzle, in which the transport air jet at the end of the weaving shed remote from said nozzle is deviated together with the thread length end through an angle relative to the insert direction and is entered into a mixing tube by means of an auxiliary air jet. The invention aims at having the auxiliary air jet acting substantially only for stretching the thread directly beside the cloth edge. This is achieved in that the auxiliary air jet is supplied as a concentrated jet centrally into the deviating transport air jet.

Abstract: A transfer device comprises a transfer lever arranged to execute an oscillatory movement and carries a thread clamp at its free end. This thread clamp comprises a leaf spring constituting a movable, controllable clamping element. The leaf spring can be raised by an actuating lever pivotally mounted on the transfer lever and which is movable relative thereto. At least one thread pick-up or entrainment element and preferably two thread pick-ups or entrainment elements, are arranged on the batten of the loom to position the weft or filling thread in the thread clamp in a predetermined position. This arrangement constitutes a relatively very simple, operationally reliable and self-cleaning transfer device.

Abstract: A mechanism on shuttleless looms for the transfer of the end 17' of the weft yarn from a yarn holder 26, 27 on a nosegripper 6 of a yarn insertion needle to a yarn clamp 13, 14 arranged on the machine frame and immovable in the weft direction. The yarn clamp 13, 14 includes a carrier which can move to swing in time with the reed 2 and has two oscillating levers 7, 10 which carry at their ends the jaws 13, 14 which grip the weft yarn. The one oscillating lever 7 is connected rigidly to the carrier, while the other lever 10 is stressed elastically via a rubber sleeve 12 into the gripping position with the one oscillating lever 7. The jaw 14 is held back by cooperation with a stop 15, while the jaw 13 moves on. The yarn clamp 13, 14 hereby automatically gets spread for the release of the end of the weft yarn or respectively for accepting the next weft yarn end.

Abstract: A weft yarn end treating device for a shuttleless loom comprises a conveyer for conveying the end portion of a weft yarn picked into the shed of warp yarns when the end portion is held to contact with the conveyer, a holder for holding the end portion to contact with the conveyer, and a thrusting member for thrusting the end portion into a location at which the end portion begins to be held to contact with the conveyer, so that any binding yarns for catching and drawing the end portion of the picked weft yarn out of the shuttleless loom can be omitted to solve the problems raised in prior art.

Abstract: The present invention relates to an apparatus for gripping a weft thread. This apparatus comprises an element for braking a weft thread, representing a tire placed on the periphery of a disk and a gripping block partially embracing the tire, the latter being fabricated from a material with a coefficient of friction against the thread exceeding that of the material of the gripping block.

Abstract: A weft cutting device in a shuttleless loom is provided with a plate-like cutting member which after completion of beating is caused to move between a pair of weft guide members and across the weft held in position by stepped portions provided for the guide members. Escapement of the weft from the stepped portion is prohibited by an escapement preventing member located near the guide members. Weft is sufficiently tensioned by a tensioning member disposed near the cutting member and engaging weft earlier than the cutting member.

Abstract: An arrangement for tensioning the end of an inserted weft for beat-up of the weft into a fell by a rotary reed is described. An elongated weft-gripping mechanism is movable forwardly opposite the direction of movement of the portion of the reed which engages the weft being inserted along an axis oblique to the rotary reed into a frontmost position where it engages a weft carried by each of a succession of weft inserters as soon as the inserter has moved past the end of the reed into which the weft has just been inserted. A pair of jaws on the outer end of the gripping mechanism then close to grip the engaged weft and to move it rearwardly into a securing position between a thrust plate and a toothed, weft-guiding disc coaxial with the rotary reed. After the weft is secured, the jaws of the gripping means open and the gripping mechanism is moved forwardly again to grip the next weft.

Abstract: The proposed weft-thread gripping mechanism includes gripping members elastically tightened together and installed at the side of exit of weft thread carriers from a travelling-wave shed. The gripping members, one of which is movable relative to the other one, are mounted on a shaft of a disk-type beat-up motion so as to be rotatable therewith and displaceable, after gripping the weft thread, lengthwise the shaft axis in the direction from the travelling-wave shed. Located on the shaft of the disk-type beat-up motion is a stationary stop cooperating with the movable gripping member at the moment of the closest approach of the gripping members to the travelling-wave shed for a gap to be formed therebetween a weft thread passes through. This makes it possible to keep taut the weft thread advanced to the fell of the cloth till the end of the process of the cloth formation.

Abstract: There are disclosed a method of and an apparatus for controlling weft threads, particularly in jet weaving machines with alternating insertion of two different wefts into a shed. At least during the inserting time of the first weft the end of the second weft inserted into the shed before said first weft is held and tensioned and is cut upon finishing the inserting operation of said first weft.The apparatus for controlling wefts includes a pair of inserting jets and weft directing means with guides for each of the weft threads, weft traps being provided between the appurtenant nozzle and the weft directing means, for the purpose of trapping the appurtenant weft in the non-inserting position of the appurtenant inserting nozzle.

Abstract: A thread gripper comprising at least two frictionally coacting clamping surfaces for engaging and holding threads at a textile machine, such as a warp-tying machine and the like, wherein the thread gripper performs predetermined movements. Means serve to alter the intensity of the frictional force applied by the clamping surfaces in a predetermined manner as a function of the path through which the thread gripper moves.

Abstract: In a triaxial weaving machine, a finger engages the weft as it leaves the shed and moves the weft toward the fell to assure that the dents of two reeds, alternately insertable across the shed, will penetrate the shed above the newly inserted weft.

Abstract: A loom operating without a shuttle is provided with a weft selection mechanism and a weft retention mechanism with the former operating to select a weft thread and pass it through the sheds of the loom while the latter mechanism retains and holds the weft thread during loom operation. The weft selection mechanism includes a plurality of pivotable weft selector arms having a weft thread engaged at a first end thereof and an actuating mechanism oprating to drive a second end of the selector arms. A plurality of selector arms is provided with the first end of each of the arms passing through a common point during pivotal movement of the arms. The arms are pivotally mounted intermediate their first and second ends and a selector device is provided to selectively engage the second end of a particular arm with the actuating mechanism driving the arm through pivotal motion, thereby to effect selection of a weft thread.

Abstract: A loom comprising two sheets of warp threads which are momentarily held in diverging planes to form a weaving shed with a conveying tunnel for wefts, a blowing nozzle arranged in position at one side of such shed to propel wefts through such shed by means of a fluid discharged from said nozzle, and a main tensioning device arranged in position at the other side of such shed, operating with a fluid jet, to tension inserted wefts during the beating up movement of the loom. The jet is so arranged that it issues substantially, transversely, and freely across the conveying tunnel to suck in the weft and is caught by a passage disposed in alignment with said jet. An auxiliary tensioning device is provided and is constructed similarly to the main tensioning device. The auxiliary device is disposed at the side of the main device. The main and auxiliary devices are used for normal and startup operations, respectively, and each has gas or air pressure supply means for normal or startup operation.

Abstract: Formation of tucked-in type selvages on a shuttleless weaving loom is carried out in the area in front of the reed by cooperation of a pair of coacting grippers and a cutter, movements of these elements being in the form of a combination of swinging about a fixed point and sliding in the warp direction, the course of movement of the grippers before cutting of the weft end being different from that after cutting of same.

Abstract: The present invention relates to devices for holding an end of a weft thread and may be most effectively used on looms wherein the beating-up of the weft thread is performed by beat-up elements. This device includes two groups of shaped plates with notches and projections installed at each selvage of the cloth, the plates of one group being arranged closely adjacent the plates of the other group so that the projections of both are arranged against one another, thereby forming a gap for receiving the weft thread which frictionally engages the projections. Due to such an arrangement, sufficient braking of the weft thread and, consequently, reliable prevention thereof from axial displacement are ensured.

Abstract: A cylindrical body houses a shaft and is movable with respect thereto. The body carries a first jaw element at one end thereof. A second jaw element is joined to fixed support means connected to the shaft within the body. A compression spring surrounds a portion of the shaft projecting from the opposite end of the body, and the spring urges the jaw elements into clamping relationship. The clamp is opened by moving the body in opposition to the force of the spring.

Abstract: A machine for forming the so-called tucked selvedge is disclosed, which comprises two thread-grasping units, a thread cutting unit and a movable hook-needle. The second thread-grasping unit is laterally shifted relative to the first like mechanism. The hook-needle serves to grasp the weft thread and to insert it in the warp shed as this becomes available. The working sequence of all of these mechanical units is warranted by appropriate, specially provided cam and linkage mechanisms. The advantage is that thread waste for the formation of a dummy selvedge is prevented.

Abstract: A filling-thread clamping device in the form of a tong-like thread gripper which is displaceable back and forth along a line lying in the central plane of the warp threads.

Abstract: The means for forming a fabric border is constructed with a cover to cover over the opening in the housing through which the operating element projects. The cover is formed by flange projections on the drive means for moving the operating element or by a separate sleeve-like part having a flanged appendage on the operating element. The cover is intended to prevent dust and lint from entering the housing.