Abstract: A method and means are disclosed for measured control of tape-like warps for shedding and taking-up operations when producing woven materials comprising tape-like warps and wefts. According to this invention, a displaceable contact surface of the warp control device is located between the warp supply source and the shedding device. The warp control device comprises a displaceable member for providing contact surface to displace at least some of the tape-like warps for releasing them in a measured way for shed forming and taking-up operations. Further, the contact surfaces are retracted for enabling shed closing and measured taking-up.

Abstract: A needle loom is provided with a bearing structure (2), one textile-product (P) forming head (3) installed on the bearing structure (2), two heddle frames (6) capable of intercepting a plurality of warp threads (O), one sickle (9) to bring the two weft threads (T) transversely between the warp threads (O), two movable guides (11) each of which is adapted to intercept one of the weft threads (T), actuators (13) to shift the movable guides (11) and change the weft threads (T) carried by the sickle (9), one needle (18) to temporarily retain at least one of the two weft threads (T) carried by the sickle (9), and a reed (20) to compact the weft threads (T) against the already formed textile product (P). Two electric motors (21), each of which is connected to a respective guide (11) actively move the respective guide (11) in a first way (X) or in a second way (Y) along the predetermined direction (D), upon command of the respective motor (21).

Abstract: A needle loom comprises a supporting structure (2), at least one forming head (3) of a textile product (P) installed on the supporting structure (2), at least two heddle frames (6) capable of intercepting a plurality of warp threads (O), at least one sickle (9) to bring at least two weft threads (T) transversely between the warp threads (O), at least two movable guides (11) adapted each to intercept one of the weft threads (T), actuator means (13) to move the movable guides (11) and change the weft threads (T) carried by the sickle (9), at least one needle (18), to temporarily retain at least one of said at least two weft threads (T) carried by the sickle (9), and a reed (20) to compact the weft threads (T) against the already formed textile product. The actuator means (13) comprises at least two electric motors (21), connected each with a respective movable guide (11), to move each guide in a manner independent of the others.

Abstract: A textile machine comprising at least one frame (2) supporting a plurality of healds (3), a sickle (6), a needle (8), a compacting device (201) and a main shaft (12) for a synchronized movement of the frames (2), sickle (6), needle (8) and compacting device (201) and manufacture of a textile product (5); the machine (1) further comprises a first feeding member (20) to supply a plurality of warp yarns (18) to said healds, a second feeding member (40) to supply at least one weft yarn (19) to said sickle and a take-down member (60) of said textile product (5). The machine (1) is also provided with a control apparatus (80) comprising at least one first electromechanical actuator (30) operatively active on said first or second feeding member (20, 40) or on said take-down member (60) for movement of the same, and a controller (90) for regulation of at least said first actuator (30).

Abstract: The method of disposing the weft, in a loom for displacing the weft led into a weft insert nozzle by jetting the air current from a guide nozzle disposed in a reed sley and releasing the weft from the upstream side of the weft inset nozzle to the vicinity of an intake of an discharge device, is characterized in that, when displacing the weft to the vicinity of the intake, the reed sley is stopped at a position where the air current from the guide nozzle is directed to the vicinity of the intake.

Abstract: The invention relates to a method for controlling a weft yarn feeding device F in a yarn processing system, comprising, in addition to the feeding device, a power look L which consumes weft yarn Y on operation, whereby a run-signal is generated by the power loom which initialises the start-up of the weaving operation. The run-signal also is transmitted to the feeding device, essentially simultaneously with a start-signal X, generated externally of the feeding device. The drive motor M of the feeding device is driven at a predetermined speed, after emission of the external start-signal X in order to prevent an undesired reduction of the size of a yarn store 13 by the initial consumption demand of the start-up of the weaving operation of the power loom. A signal transmitting connection 19, 19′ is provided in the yarn processing system between the power loom L and a control unit C1 of the feeding device F for transmitting a start-signal X which is derived from the run-signal of the power loom.

Abstract: The stationary thread guiding element (1) for a series shed weaving machine which has a plurality of concentrically extending grooves (1a, 1b, 1c, 1d) at an end face (1i) is designed as a segment or sector of a circle.

Abstract: A weft cutter for an air loom in which a movable blade is hinged to the ram of a pneumatic cylinder which is pneumatically fed through a solenoid valve provided at its inlet with a pressure regulator. The ram is kept in a rest position by a return spring and the solenoid valve is directly piloted from a loom control console.

Abstract: An apparatus and method for integral fill yarn insertion and beatup is provided. A modified rapier contains a channel for holding fill yarn. The channel is covered with a flexible and inflatable boot, and an inflating apparatus for this boot is also attached. Fill yarn is inserted into the channel, and the rapier is extended into a shed formed by warp yarn. Next, the rapier is pushed into the fell of the fabric, and the flexible and inflatable cover inflated, which both pushes the yarn into the fell of the fabric and performs beatup. The rapier is withdrawn and the shed closed to complete one step of the weaving process.

Abstract: A knit or woven fabric that can be produced from raw silk on a commercial scale and found that this object can be attained by a knit or woven fabric that employs a tubular braid made from raw silk which is optionally blended with other fibers. The present invention has been accomplished on the basis of this finding.

Abstract: A method and apparatus for cutting a weft thread are disclosed in which a completely separate, independent drive system for the weft thread cutter and clamping device enables the cutting time to be optimized without affecting the main drive system for the loom. By using its own, independent drive system, which is completely independent of the main loom drive, the cutter can be actuated at any time during the loom cycle. The cutter and clamp drive system is controlled by a computer, which may be programmed to determine the optimum cutting time as a function of the weaving parameters and the weft thread data. A device may be provided to detect an improperly inserted weft thread. Once this has been detected, the computer may deactivate the cutting device to prevent the separation of the improperly inserted weft thread from the weft thread supply.

Abstract: A method and device for releasing defectively inserted weft threads in weaving machines by reversing the machine to expose the defectively inserted thread in the open shed, initially releasing the weft thread from the ends of the fell by moving the weft thread away from the fell at its ends, positioning releasing elements between the released portion of the weft thread and the fabric fell, releasing an additional portion of the weft thread from the fell by moving the releasing elements away from the fabric fell toward the machine reed, positioning an additional releasing element between the seft thread and the fabric fell, releasing an additional portion of weft thread from the fell by moving the additional releasing element away from the fell and toward the reed, and containing the positioning of the releasing elements across the shed of the weaving machine until the weft thread is released over the entire length of the shed.

Abstract: In a fluid jet loom, almost all the faulty picks are attributable to defects in the quality of the weft yarn. The present invention detects matters for evaluating the physical properties of the weft yarn or matters for evaluating the result of the picking operation during the picking operation, discriminates the quality of the yarn package on the basis of data obtained through the detection, and automatically changes the yarn package for a new yarn package when it is decided that the yarn package feeding the weft yarn at present is defective.

Abstract: An air jet weaving machine has a weft deflector (7, 90, 23, 22) to keep the weft yarn away from the shed after the occurrence of a disturbance. The deflector is disposed between the picking nozzle (61) and the weft yarn entry into the weft duct (12). Before the discharge orifice of the picking nozzle (61) in the rear position of the sley (10) a rod-like yarn guide (90) extends as far as the shears (8), deflects the yarn into the funnel (23) and introduces the yarn into the shears (8). Thanks to the provision of the yarn guide (90), the weft yarn can be parted off by a single pair of shears (8) both after a normal pick and after a deflection. The weft yarn (5) is deflected by a blowing nozzle (7) transversely to the picking nozzle (61) by way of the yarn guide (90) and is removed by way of a funnel (23).

Abstract: A weaving machine reed which has a protective strip connected to the reed on the end adjacent the fill yarn insertion device. The protective strip basically consists of a vetically elongated piece of metal with a ceramic material mounted centrally of the strip to provide a protective surface.

Abstract: In construction of a faulty weft remover for a fluid jet loom equipped with a rotary take-up drum and a reciprocal cutter assembly, a common drive source is provided for selective, phased and independent driving of the take-up drum and the cutter assembly is configurated to automatically distribute a faulty weft wound on the take-up drum into separate groups so that phased operation of the take-up drum and the cutter assembly should be curried out reliably with high degree of success in faulty weft severance by a simplified construction.

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: The invention aims at equalizing weft time differences when launching successive threads and thereby obtaining a more uniform cloth. For that purpose the thread velocity in the initial phase of the weft is measured and on the basis thereof an additional pressure impulse of the conveying fluid may be supplied to the thread. According to a different possibility, in dependence on the measured value, the thread is more or less braked by means of a brake at the end of the weft phase.

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 improperly inserted weft removing device for a shuttleless loom which weaves a fabric by picking a weft measured and stored on a measuring and storing device into a shed of warps by the agency of a jet of a fluid jetted through a picking nozzle, said weft removing device including a winding unit for extracting an improperly inserted weft from the cloth fell of the cloth being woven on the shuttleless loom upon the occurence of a mispick; a guide nozzle for deflecting the weft from the picking path and guiding the same to a predetermined position in the winding unit, which is disposed between the picking nozzle and the edge of the cloth on the picking side; a cutter for cutting the weft extending between the picking nozzle and the winding unit; and a controller for controlling the winding unit, the guide nozzle and the cutter for a series of sequential weft removing actions.

Abstract: The weaving machine comprises a reed and a cutting mechanism which is associated with the cloth edge on the picking side and which has a cutting element lowerable at the picking cadence from a neutral normal position above an imaginary prolongation of the beating-up line into a second operative position which is disposed approximately at the height of the beating-up line at a lateral distance from the movement zone of the reed and which is operative to guide the weft yarn to be severed. The cutting element is adjustable through the agency of an additional drive connection to move substantially parallel to the picking direction into a third operative position which is closer to the cloth edge laterally and which is disposed in the movement zone of the reed. In the third operative position, a second cutting element cooperates with the first cutting element to sever the weft yarn from the weft yarn supply at a very reduced distance from the cloth edge.

Abstract: In a loom of the type wherein the filling yarn is inserted into the warp shed in the form of cut lengths and wherein a reed serves for beating-up the inserted filling yarn into the fabric at the fell of the cloth, the combination therewith of improved means for severing the terminal ends of filling yarns projecting outwardly from at least one of the selvages of the fabric being woven; which improved means comprises positioning a cutter adjacent at least one end of the reed, and providing a relatively wide widthwise extending opening in the reed adjacent the end where the cutter is positioned, with the opening being of a width substantially greater than the dent spacing of the reed; so that when the reed is reciprocated in beating-up the filling yarn into the fabric, the cutter has portions thereof that are positioned in the opening in the reed for severing the terminal ends of the filling yarn close to the selvage of the fabric being woven.

Abstract: The picking apparatus operates to pick a weft yarn into a shed with a predetermined excess length. A weft stretching nozzle receives the excess length at the forward end of the weft thread while stretching the weft yarn from the catching side of the shed. After termination of picking and during an initial phase of the beating-up movement of the reed, the weft yarn is pulled back on the picking side by the amount of the excess length. The stretching effect on the weft yarn is effective and uniform and obtains a better fabric during weaving.

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: Machine for manufacturing knit-woven fabrics comprising stitch wales and warp thread which lie between said stitch wales and which are interlaced, in a weave, by connecting loops of said stitches. The machine has lapping elements which are movable between an upper position and a lower position, and cooperate with knitting needles which are mounted, on the one hand, for rotation in a needle bed in a plane parallel to the beat-up edge of the fabric and, on the other hand, for reciprocation in spacings of a guide comb arranged parallel to the beat-up edge of the fabric. The mechanism for controlling the motion of the needle bed is associated with mechanism for producing a reciprocatory side motion of one of members of the pair of needle bed and guide comb relative to the other in order to control a multi-phase motion of the knitting needles in sheds following one after the other.

Abstract: The weft severing device is used for superposed shed type weaving machines and has at least one shear which has a blowing tube. The tube is supplied with blowing air to convey the weft thread. To sever the weft thread, the blowing tube is moved into the cutting element after the weaving rotor has drawn the weft thread over the mouth of the blowing tube.

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: 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: A yarn cutter for a shuttleless loom, particularly for a water jet loom, comprising a pair of knife bodies each having a cutting edge formed of a ceramic and being driven for relative sliding motion in mutual contact.

Abstract: This weaving machine comprises a device for removing faulty weft threads from the weaving shed or the woven cloth respectively, also if they have already been cut from the yarn supply during the weaving cycle. The device has a reciprocatable mechanical removing member (8) by means of which also fibrous yarn threads may be removed from the beating up line. Furthermore the device comprises a catching element (10) for threads which have already been cut, which element is adapted to clamp and take along the thread.

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 thread clamp, designed for periodically retaining a weft yarn in a loom of the shuttleless type, comprises a housing with a stationary insert having front and rear recesses spanned by respective membranes defining therewith two chambers of variable volume, the membranes being interconnected by a stem passing with clearance through a passage in the insert. One end of the stem, projecting beyond the front membrane, carries a movable jaw normally held against a confronting fixed jaw by a biasing spring disposed in the front compartment. The rear chamber, whose membrane is of larger effective diameter than that of the front chamber, can be expanded by the admission of air under pressure through one or more passages in the insert, the difference in membrane area being sufficient to let the resulting pressure differential in the two chambers overcome the force of the biasing spring to separate the movable jaw from the fixed jaw.

Abstract: A monitoring unit for a fluid weft insertion loom monitors the yarn supply withdrawal.

Abstract: A selvedge cutting device for a weaving machine or loom serves to cut the selvedge from the fundamental weave or foundation fabric prior to winding-up the same and contains a scissor structure composed of two mutually contacting scissor blades. The one scissor blade is arranged at a mounting structure, such as a stationary ball pin or bowl gudgeon for carrying out swinging or pendulum movements and in relation to which mounting structure the other scissor blade is displaceable in its lengthwise extent. Both of the scissor blades form, at the region of their cutting edges, guide surfaces for the self-guiding of the scissor structure in a cutting lane or alley at the fabric. At the displaceable scissor blade there engages a drive which imparts to such scissor blade an up-and-down movement and does not hinder the pendulum or swinging movements of the scissor structure. In this manner there is provided a simple, functionally reliable selvedge cutting device possessing a high cutting capacity or output.

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: An improved solenoid actuated yarn clamp for controlling the flow of a moving strand of yarn particularly in conjunction with a fluid weft insertion loom. The improved clamp is double acting, being displaced positively between an operative yarn clamping position and an inoperative position releasing the yarn for further movement. The actuation of the clamp in both directions preferably occurs in two stages in which a relatively movable portion of the armature is first attracted into engagement with the energized solenoid, resulting in enhancement of the flux path of the solenoid, causing movement of the remainder of the armature. A preferred electronic circuit for regulating the actuation of the improved clamp is also disclosed which permits the adjustment of the clamping and nonclamping portions of the operative cycle of the clamp.

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: A thread severing mechanism is provided that has a long life and is easily and inexpensively replaceable, even when cutting glass yarn. The thread severing device includes a cutting blade having a razor edge, and an anvil with the thread supporting surface defined by a rubber block. The blade is moved with respect rubber block so that the razor edge comes in contact with the block, severing any thread between them. The anvil is desirably mounted on a temple of a shuttleless loom, its position with respect to the cutting blade is adjustable, and it includes an outwardly extending fabric guide that prevents the loom fabric from riding up onto the rubber block.

Abstract: A yarn clamp for periodically clamping yarn on textile machines comprising a pair of clamping rollers supported on a frame for rotation about their axes. Means is provided for moving the clamping rollers into and out of contact with each other and for imparting a partial rotation to each of the rollers while they are out of contact. A wiping means is provided for wiping the surfaces of the clamping rollers when they rotate to avoid the accumulation of lint on the surfaces of the clamping rollers.

Abstract: A yarn brake for a textile machine. The yarn brake comprises a stationary clamping plate and a movable clamping plate. The plates are forced together by first and second biasing means to provide full braking pressure on a yarn passing between the plates. De-activating means operate to selectively nullify the effect of the second biasing means to provide partial braking pressure on the yarn, or to nullify the effects of both biasing means so that there is no braking pressure on the yarn. The invention also includes a weft yarn braking system for a multi-weft loom utilizing a yarn brake of the present invention for each weft yarn. Control means, operating in timed relation to the loom, operate the brakes in a programmed sequence. The yarns are fully braked when not being inserted into the loom.

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 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 improved weft control device for shuttleless looms in which weft is drawn between a pair of friction plates mounted on individual post elements in a manner whereby their free ends are disposed in contiguous relation. The device provides a control lever fixed to the lower end of each post element which are operatively connected one to the other. One of the control levers is of greater length than the other and defines an indicating arm that is disposed in operative association with a band of indicating indicia provided on a support member for the post elements. By manually moving the indicating arm in one direction or the other to a pre-selected graduation of the indicating indicia, the post elements will rotate simultaneously and in opposite directions and the force with which one friction plate engages the other can be increased or decreased as desired.

Abstract: A fill wire feeder for feeding weft wire to a wrap shed from a lay beam includes a weft wire feeding mechanism disposed outside of the wrap shed and mounted on one end of the lay beam. The mechanism includes two pairs of coacting rotatable rollers, the nips between each pair of which lie in the same plane to define a linear travel path for the weft wire guided therebetween and drive means for rotating at least one roller of each of the pairs.

Abstract: The weft yarn is selectively gripped and released by movable and stationary disc members in response to the weaving operation of the loom. The gripping force applied to the weft yarn by the members is such controlled that under beating of the reed, the magnitude of the force is decreased by a predetermined value thereby inducing a slippage of the weft yarn in the members.

Abstract: A method of driving shuttles through sheds formed by warp yarns of a wave-type loom in which a transport edge of the shuttles is lubricated before entrance into the warp yarns, and a wave-shed loom for carrying out the method of driving the shuttles.

Abstract: There is disclosed a device for cutting weft in looms with mechanisms for multi-weft weaving. The cutting device includes a holder on which mutually adjustable shields are mounted. The shields are provided with entrapping dents for the introduction and location of weft between the blades of cutting jaws at a cutting point. The cutting device has a movable jaw which is adjustably connected to a control lever. Adjustable shields and cutting jaws permit the use of the entire length of knife blades secured to the jaws. In this manner, during cutting the overlap is minimized and the lifetimes of the cutting edges and the cutting jaws are increased.