Abstract: A device for stretching an inserted filling (14), in particular for use in an airjet loom, includes a channel (5) adjoining a filling insertion conduit (4) of a reed (3), a blow nozzle directed at a branch channel intersecting the channel (5) in substantially perpendicular manner discharging into the channel (5), and at least one deflection location for the filling (14). The deflection location consists of a wear-resistant element (7, 10, 11) that extends substantially transversely to the direction of insertion (A) of the filling.

Abstract: A weaving machine contains a reed (8) and a weft thread guide apparatus (32) which are connected to one another and are pivotal between an insertion position and a beat-up position. For the insertion of a weft thread, a weft insertion apparatus (14) which is arranged in a fixed spatial position and has at least one blower nozzle (22) for the insertion of a weft thread (38) into the guide passage (36), a thread clamp (16) and a shear (15) are provided. Coupled to the reed are the thread clamp in order to clamp an inserted weft thread (38) and to forward it synchronously with the guide passage (36) from the insertion point up to the abutment point, and the shear (15), with the shear (15) being placed after the thread clamp (16) in the beat-up direction in order to sever off the weft thread immediately after the clamping.

Abstract: Lengths of weft thread are sequentially inserted in sheds formed by a series shed weaving machine. Weft thread is continuously supplied with a fluid flow. By reversing the flow direction of the fluid flow or deflecting the weft thread, a thread loop is formed outside a weft distribution apparatus of the weaving machine so that the weft thread remains taut inside the weft thread distribution apparatus. A nozzle arrangement in which the fluid flow direction is reversible or a weft thread clamping and deflecting arrangement are used to form the loop and maintain the weft thread taut.

Abstract: Device to block weft yarn associated with a measuring weft feeder for fluid jet looms. The device is located downstream of the outlet yarn guide and/or of the antiballoon device of the feeder, and comprises a single elongated body which includes: an inlet cone and a cylindrical channel crossed by the weft yarn, the common axis of which is the longitudinal axis of the device; a core to block the yarn, movable into a guide perpendicularly to the axis and adapted to penetrate into the channel through an opening thereof; electromagnetic elements acting on the core against a return spring; and a bush associated to the channel, in correspondence of the opening, to form a contrast surface onto which the core engages in order to block the yarn.

Abstract: A ribbon loom for making a material web at high speed operates through precise control of the weft thread. The ribbon loom comprises a weft insertion needle to insert a loop of weft thread into a shed. The weft thread loop is tied off by a knitting needle on the side of the web away from the insertion needle. The insertion needle is served by a feed device for the weft thread containing a pneumatically operated compensator in the form of a blower and/or a suction device. The insertion needle also has a separate guide eye for the weft thread. This thus provides a particularly effective compensator ensuring precise control of the weft thread when the ribbon loom is running at high speed. The web edges are always tensioned to the set width and maintained at a constant width.

Abstract: The tension of a weft thread in a loom is controlled during particular time phases within the weft supply, weft presentation, weft seizing, and insertion, including the initial phase of entering into the loom shed. Additionally, the weft thread tension may be controlled during the duration of the actual insertion phase when the weft thread travels through the shed. For this purpose a twin nozzle or two separate nozzles are arranged downstream of the weft supply and preferably upstream of a weft brake or weft stop motion. The double nozzle can supply pneumatic impulses in the insertion direction (ID) and/or in the opposite direction (OD). The operation of the double nozzle is controlled by a program that determines the timing and the duration of the pneumatic impulses applied to the weft thread in the insertion direction and/or in the opposite direction.

Abstract: A yarn package holder on a creel, with a mechanism for rapidly stopping the yarn package holder once yarn is no longer being drawn. The mechanism has a pivoted member, one end of which carries a transverse braking control arm that overlies the yarn, and the other end of which is secured to an end of a tensioning cord wrapped at least once around a pulley on the yarn package holder. When yarn is being drawn, the braking control arm is lifted, which has the effect the loosening the cord around the pulley so that the braking effect is small. When yarn is no longer drawn, the braking control arm drops, which has the effect of tightening the cord around the pulley and rapidly stopping the yarn package holder.

Abstract: An air nozzle weaving loom is equipped on its weft exit sides (E2) with a cutter (11), a suction opening (8A), a first weft stop motion sensor (4), a weft stretcher (6), and a second weft stop motion sensor (7) arranged in that order in the weft insertion direction. These components are operated to provide a complete monitoring and handling of the weft thread with regard to proper weft thread insertions. A control signal from the first weft stop motion device (4) activates a suction device (8, 9) connected to said suction opening (8A) while simultaneously deactivating the stretcher (6), when the leading end of the weft thread reaches the first weft stop motion device (4). The cutter is activated by the main loom control while the suction is applied to the suction opening (8A), whereby a cut off leading end (16A) of the weft thread (16) is removed by suction.

Abstract: An apparatus for reducing the load on a weft thread being inserted into a loom shed reduces the necessary number of weft thread monitors or stop motion devices functioning as thread tension sensors while still ensuring a reliable tension measurement, especially in a gripper loom in which a plurality of different weft thread types are to be respectively inserted into the loom shed using a weft thread selector and insertion arrangement. A single first thread tension sensor (14) is provided to be common to all of the weft thread types (6) that are to be inserted. The sensor (14) is arranged in a first arrangement plane at a location downstream of the weft thread selector and change arrangement (8). A single second thread tension sensor (19) is arranged in a second arrangement plane at a location between the first thread tension sensor (14) and the weft thread selector and change arrangement (8).

Abstract: In a device for guiding and braking a yarn, a yarn brake comprises braking elements that are pressed flexibly against each other and act on the yarn in a pinch zone. The yarn brake is arranged in the yarn running path between a yarn feeder and a yarn receiver. A pneumatic threader also is provided which includes at least one air and yarn guide element that is disposed in the yarn brake and surrounds the pinch zone without contact. The air and yarn guide element comprising a receiving end, a delivery end and a guide channel provided therebetween, which is open towards the braking elements and from which the yarn is introduced into the pinch zone. The yarn is conveyed into the guide channel by means of an air flow past the pinch zone to the yarn receiver and is introduced into the pinch zone under the action of a produced drawing force.

Abstract: The apparatus contains a measurement unit comprising a signal transmitter (1), a yarn guidance member (2) and a resilient layer (4) arranged between the signal transmitter and the yarn guidance member and connected to them. Almost hysteresis-free operation is achieved as a result of the exposed arrangement of the layer and of the yarn guidance member.

Abstract: A sensor for detecting the stress profile of a thread that has moved. The sensor contains a signal generator, a thread guiding member and a body of resilient material. The signal generator is resiliently mounted in a vibration damping manner and in the manner of a cantilever in a body. Through this mounting arrangement the influence through mechanical action and also the influence of the thermal expansion caused by heat as a result of the heating up caused by the running thread are largely cancelled and thus measurement errors are avoided.

Abstract: A weft guide channel (6) in a reed of an air jet loom can be lengthened or shortened by telescoping sections forming one or two channel extension members (10, 18) and/or by intermediate inserts (21, 22, 23) that also have a weft guide channel portion (21A, 22A, 23A). The extension member (10) and the inserts are mounted to a mounting bracket (9) which itself is secured to the reed and/or the sley carrying the reed. At least one weft stop motion device is provided for each extension member and/or for the respective insert. One of the extension members is provided with air ducts (14, 15) for a crosswise air flow for stretching a weft thread.

Abstract: A weft yarn break for a power loom has first and second sets of hoops. Each set of hoops has at least two hoops which are spaced apart and essentially parallel to each other. A mechanism drives at least one of the sets of hoops about a rotational axis so that the first and second set of hoops have a relative swivelling, motion. A transversing hoop is disposed in the running direction of the weft yarn and includes an inclined surface located across the running path or direction of the weft yarn. The weft yarn is shifted up and down the inclined run-up surface as the first and second set of hoops are swivelled relative to each other.

Abstract: A thread storage (1) having a substantially cylindrical storage drum (2) for the receiving and delivery of circumferentially deposited turns of thread (3), having a central thread withdrawal eye (4) for the overhead withdrawal of the thread (5), and having a brake surface (8) which rests under spring load on a frustoconical withdrawal slide surface (6) associated with the withdrawal-side end region (2') of the drum, which brake surface is formed by the inner side of a frustoconical brake strip (9) of flexible material. In order to make the withdrawal of the thread uniform and counteract wear and deformation of the brake surfaces, the frustoconical brake strip (9) rests flushly on the frustoconical withdrawal slide surface (6), the thread being withdrawn tangentially through the flushly engaging surfaces.

Abstract: A weft brake for an airjet loom includes a controlled drive for causing at least one thread guide to deflect the weft and thereby brake it, and a transmission which permits relative motion between the drive and the thread guide. The transmission is placed between the controlled drive and the thread guide to permit relative motion between the drive and the thread guide. As a result, rapid drive motion will not directly cause a rapid thread guide motion, resulting in a reduction in tension spikes during braking. Because the motion of the thread guide depends on the weft tension, when the weft tension is high, the amount of the deflection and consequent braking is less and the increase in weft tension caused by the braking is in turn limited. Moreover, even in the event of slackening of the weft tension, the weft still is kept tension. The drive may be in the form of a rotary drive and the transmission may be in the form of a helical spring.

Abstract: A weft feeder for gripper or projectile looms allows an operator promptly to restore the continuity of a weft yarn from a yarn feed spool to members for weft insertion into a loom shed, in case of weft yarn breakage or interruption. Downstream of a first yarn guide outlet, there are mounted a double-leaf brake, a separating element, and a second downstream yarn guide eyelet. The separating element is controlled by an actuator so as to separate two brake leaves of the double-leaf brake and to form a duct to guide the weft yarn from the first eyelet to the second eyelet.

Abstract: A shuttleless loom weft brake includes at least two braking units arranged in series in the weft yarn travel direction and operating mutually out of phase. Each unit formed from a vertically arranged elastic blade at least partly of ferromagnetic material and a flat support plate of non-magnetic material, between which the weft yarn is made to travel. The blade is fixed to the frame of the weft brake by the end which is closer to the feed bobbin and is preloaded in a direction urging it away from said support plate and against a respective stop pin. The blade is pressed against the support plate by the attraction of an at least one electromagnet of adjustable excitation.

Abstract: A weft thread brake for a loom has brake force application members controlled by a drive such as a high resolution stepping motor or a continuously adjustable drive for reducing or increasing a gap between the brake force application members. The weft thread moves through this gap. A thread tension sensor is arranged downstream of the brake and produces an actual thread tension signal that is used for producing in a closed loop unit, a brake force control signal for controlling the brake force in dependence on the actual thread tension signal. A rated weft thread tension value may be compared in the control unit with the measured actual weft thread tension signal and the result of this comparison is then used to produce the control signal to adapt the brake force to the thread characteristics and to maintain at all times during a weft thread insertion the required weft thread tension.

Abstract: According to a method and apparatus for controlling the insertion process of a weft yarn, the weft yarn is temporarily exposed to a braking friction and the yarn tension is mechanically picked-up. In order to prevent the friction from having a disturbing or damaging effect on the yarn, the yarn tension is only temporarily picked-up during certain phases of the insertion process, in order to derive information from the tension curve that is useful for the control of the insertion process. In a power loom, in particular a jet, rapier or gripper shuttle loom, a tension sensor for sensing the tension of the weft yarn can be switched during insertion between its sensing position and a passive position in which it does not touch the weft yarn. Preferably, the tension sensor is integrated in the insertion brake or even forms the braking element itself.

Abstract: A weft picking system for an air jet loom is provided with a microcomputer as a controller. The weft picking system comprises a weft traction device including a pair of rollers, one of which is driven by an inverter motor. A weft yarn fed from a weft measuring and storing device can be placed between the rollers to be drawn toward a weft posture regulating nozzle. The weft posture regulating nozzle is arranged to project the weft yarn into the shed of warp yarns and regulates the posture of the weft yarn under the influence of air jet ejected from the nozzle and from a plurality of sub-nozzles. The rollers always rotate during a weaving operation of the loom. A change-over device is provided to change the weft yarn from a first state of being placed between the rollers to a second state of separating from the rollers or vice versa.

Abstract: A weft yarn (1) leaving a stationary stock bobbin (2) is led through a compressed-air nozzle (6) and a deflector element (16) movable transversely to the direction of weft insertion (arrow 9), to the weft insertion mechanism (11) of a projectile loom. After each weft insertion the weft yarn (1) becomes deflected by the deflector element (16) from a yarn path (1a) running stretched into a cranked yarn path (1c) and returned towards the stretched yarn path (1a) during a following weft insertion. During a predetermined fraction of the weaving cycle which comprises the return of the weft yarn (1) into the stretched yarn path (1a), the compressed-air nozzle (6) is acted upon by compressed air so that the weft yarn (1) is additionally accelerated for a short time. After the return of the weft yarn (1) the compressed air feed to the compressed-air nozzle (1) becomes blocked during the remaining part of the weaving cycle.

Abstract: A jet loom with a weft yarn insertion brake contains a braking element that is movable from a position of rest, on one side of the weft yarn, across the path of the weft yarn to a braking position. An electric motor, which drives the braking element, can be actuated during each insertion process of the loom. The electric motor preferably constitutes a fast response step or d.c. motor, whose direction of displacement can be switched and whose stroke can be individually adjusted for each set position of the braking element during the insertion process. Operation of the electric motor is controlled by an electronic control device. Programming within the control device can be modified between varying insertion processes so as to adapt the timing, stroke and driving direction of the electric motor. The driving force of the electric motor is transferred to the braking element by a constrained, inelastic link connecting the two.

Abstract: In a weft thread brake mechanism with a controllable braking effect, a controllable braking force is applied to a weft thread as it passes between two lamellar braking members, such as leaf spring members. A servomotor, preferably a stepper motor, rotatingly drives an eccentric brake effect control member that cooperates with at least one of the lamellar brake members. Through the eccentric rotation of the braking effect control member, it presses to a varying degree against at least one of the lamellar braking members. Thus, a varying braking force is applied by the lamellar braking members to the weft thread. A programmable computer control provides control signals for the stepper motor.

Abstract: A modulated thread beating device for weft feeders has a first lamina and a second lamina that are arranged opposite one another and are supported by pairs of fixed and respectively movable bars that engage the ends of the respective laminae, flexing them in an arched shape; the laminae are arranged opposite each other at their convex face. The movable bars are supported by a corresponding movable element which is suspended elastically and is provided with an energization coil that is subjected to the field of a permanent magnet. The coil of the movable element is supplied with an energization current that is modulated in proportion to the advancement speed or mechanical tension of the thread.

Abstract: A shuttleless loom in which that part of the reed traversed, by the false selvedge yarns and the binding yarns for the side edges of the fabric under formation is detached from the rest of the reed. The detached part is made easily removable from the loom sley, whereas the grids of the false selvedge formation device and of the binding device are mounted on two rigid frameworks. These frameworks are easily removed through a quickbreak connection from their supports, these being driven with opposing reciprocating movement within guides fixed to the loom.

Abstract: A device or holding weft threads of a series-shed loom between a weft input side and a weft output side of a rotating rotor. The device includes one thread-holding device on the input side of the rotor, and one thread-holding device on the output side of the rotor, with at least one cutting device on the input side for severing inserted weft threads. Each weft thread holding device includes a device for clamping at least one weft thread at a first end on the input side, and at a second end on the output side. Each device for clamping includes a supporting surface extending substantially parallel to the central axis of rotation of the rotor and any device two endless conveyor belts lying over one another at least inside an angle of partial revolution of said rotor between said weft thread insertion angle to a weft thread discharge angle. The two conveyor belts are guided over guide rollers, so that an inlet slot for weft threads is produced in conjunction with the supporting surface.

Abstract: The binding of free weft thread ends at the exit of the weft thread insertion channel in an air weaving loom, into the fabric edge, is to be avoided. For this purpose it is necessary to straighten out the turbulent weft thread ends. The straightening is accomplished by a blowing nozzle that directs its air stream onto the free weft thread ends in a direction substantially defined by the fabric withdrawal. The auxiliary nozzle is arranged in an auxiliary reed section used for forming an auxiliary selvage. Such a blowing nozzle may be combined with a nozzle for stretching the weft thread end.

Abstract: A device for stretching a weft thread in weaving machines includes a stretching nozzle mounted on the sley of the weaving machine and a blower device for removing weft threads from the stretching nozzle. The blower device is mounted on the sley near the stretching nozzle.

Abstract: The weft yarn insertion mechanism exhibits at the side of the shed (6) where the weft yarn comes out a yarn holder device (13) for taking over and releasing the end (4") of the weft yarn, which comprises essentially two gripping parts (16, 17) and one nozzle (18). Preferably the one gripping part (16) is stationary and the other gripping part (17) movable and together they form a wedge shaped gripping gap (24). A blowing nozzle or suction nozzle (18) sucks or blows the end (4") of the end of the weft yarn into the gripping gap (24) at the moment when the weft insertion is finished.

Abstract: A yarn brake which can be used in projectile looms and rapier looms is actuated by a stepping motor with the rotational movement of a drive shaft of the stepping motor being converted to a linear movement of the braking member of the yarn brake.

Abstract: A one pick weft inserting, a defective weft determination method and method and a one pick weft inserting control system in a jet loom are provided wherein, in restarting the operation of the jet loom, one pick of weft is inserted and the weft is held securely to permit a smooth start-up of the jet loom. A weft length measuring device and a weft inserting nozzle are operated by a one pick command section provided in the control system to ensure one pick weft inserting into a warp shed, and after completion of the weft inserting operation, the warp shed is closed by a shed closing control section provided in the control system to hold the one pick weft securely, thereby preventing breaking, etc. of the weft.

Abstract: A pivotally mounted yarn guiding member is disposed between a weft yarn injector and a shed of warp yarns to effect drawing in of a fresh weft yarn as well as extraction of a broken weft yarn from the loom. The yarn guiding member is pivotable into a bottom position after receiving a fresh yarn end to deflect the yarn about a centering vane so that a shears may cut the yarn to form a fresh yarn tip for subsequent picking. The yarn guiding member is pivotable between a central position and a top position after receiving a loop of a broken weft yarn so as to extract the broken end of the yarn from within the shed or from the point upstream of the injector nozzle. An extraction duct is also provided on the exit side of the shed to extract the broken piece of the weft yarn via a reciprocating motion and suction. A hooked needle is also provided to effect formation of a loop of yarn for extraction by the yarn guiding member when a brake occurs upstream of the injector nozzle.

Abstract: In a device for a drawing a weft yarn (2) into a loom a continuous guide duct combined from tubular members (54, 55) is interrupted at places so that various operating elements such as a yarn brake (62) or a yarn tensioner (72) can act on the weft yarn (2). The weft yarn (2) is in these cases deflected transversely to the direction of movement through the tubular members, and so the tubular members (54, 55) are formed near the deflection station with slots extending from one deflecting station (63) to the other (63'). The device enables the weft yarn to be drawn in automatically by means of compressed air.

Abstract: A guide mechanism for presenting a weft thread to a cutter, especially in an air jet loom, has a weft thread guide pin which is driven up and down in synchronism with the beat-up motion of a loom slay, so that a beat-up weft thread is stretched by the guide pin either due to the return motion of the slay or by a horizontal motion component imparted to the guide pin in addition to its vertical movement. During the forward stroke of the beat-up motion of the slay the guide pin is out of the way of the weft thread. The cutting takes place when the weft thread is stretched across the cutter. The return motion of the slay and a forward motion of the guide pin can be combined for applying the proper tension to the weft thread to be cut.

Abstract: In order to monitor the correct receiving of an inserted weft yarn by a gripper in a receiving unit of a shuttleless weaving loom a detector is provided which is stationary mounted on the receiving side in an interspace between said gripper and a slay bar or reed of said weaving loom. Said detector comprises a plate-member projecting into said interspace or gap and having an inclined flank which is contacted by the weft yarn on his path between the inserting position and the beaten-up position. The passing of the weft yarn over this flank is detected by measuring potential variations in the detector during a defined phase of the machine cycle.

Abstract: Movable clamps are provided on each side of a weaving loom between the selvedge of the fabric being made and the adjacent shuttle box with the number of clamps equal to the number of shuttles and with the clamps, which are offset in a vertical plane, being controlled so that the yarn carried by each shuttle is seized as a shuttle leaves the warp yarn in order to maintain the yarn under tension and thus avoid any risk of yarn entanglement.

Abstract: A yarn-gripper device mounted on the weft-passing member in a weaving loom which includes a movable jaw element which pivots about a first axis against the action of an elastic element which urges the movable jaw to close with a fixed jaw to grip yarn therebetween and which also includes an effort reducing lever which pivots about a second axis located between the first axis and the elastic element and which lever is engagable with movable jaw to open the jaw against the elastic element.

Abstract: A thread feed device comprises at least one thread supply from which thread is taken and supplied to an intermediate store. A first thread feed nozzle is arranged before or after the intermediate store. A resilient thread guide element is arranged after the intermediate store and the first thread feed nozzle, which element the thread enters and leaves at an angle to the thread feed direction of a second thread feed nozzle. The thread feed device reduces stress peaks when the thread is abruptly stopped and is particularly suitable for intermittently feeding threads. Air looms with thread feed devices of this kind have a lower number of weft thread breaks among weft threads with a low braking strength. The spring element, which carries the thread guide element, can be mounted directly on the tube of the first thread nozzle.

Abstract: A device for removing a thread includes a rotatable ring and a rotatable boom. THe rotatable boom is displaceable toward the rotatable ring to clamp an end of the thread between the inner surface of the rotatable ring and the outer surface of the rotatable boom. The device also includes a driver for (1) displacing the rotatable boom toward the rotatable ring to clamp the end of the thread between the inner surface of the rotatable ring and the outer surface of the rotatable boom and (2) rotating the rotatable boom while the end of the thread is clamped between the inner surface of the rotatable ring and the outer surface of the rotatable boom.

Abstract: A thread brake for braking a weft thread in a weaving machine includes a rigid stop and an elastically deformable blade which has a free end supported to press resiliently against the rigid stop. Thread guides are provided to guide weft threads between the rigid stop and the elastically deformable blade. The thread brake is activated when the deformable blade elastically presses against the rigid stop. When contacted by a switching device, however, the elastically deformable blade is pushed against its resilient force and removed from the rigid stop, at least in the region of the switching device, deactivating the thread brake.

Abstract: A weft end treating device for a shuttleless loom comprises a yarn holding device which holds the free end of an inserted weft and tensions the weft in synchronism with the beating motion, and pushing dents for pushing the free end of the weft into the yarn holding device when the weft is beaten up. The yarn holding device is fixedly mounted on the frame of a loom at a position on the extension line of the cloth fell on the weft arriving side. The pushing dents are fixedly provided on the sley, of the loom opposite to the yarn holding device.

Abstract: A method of threading a weft insertion jet nozzle so that a correct length of the leading end of the weft thread extends from the jet nozzle in the direction of the shed includes the steps of bringing a weft thread into its corresponding jet nozzle, inserting at least one weft length of said weft thread into the shed, cutting off the length of weft thread which has been inserted into the shed so that the correct length of weft thread extends from the outlet of the jet nozzle, and finally removing the cut-off length of weft thread from the shed. A weaving machine adapted for carrying out the described method includes a control unit connected to the weaving machine's prewinders, jet nozzles, a suction nozzle, a cutter, and to the drive of the sley of the weaving machine.

Abstract: An air jet weaving machine in which the pick sensor and the filling stretch pipe are combined to eliminate the space in the reed normally required to locate the pick sensor. The combination pick sensor and stretch pipe are located at the end of the reed remote from the filling air nozzle adjacent the filling yarn suction member.

Abstract: An air jet loom is provided with a brake for braking a weft yarn and a set of deflectors at least one of which is movable in a controlled manner to impart tension in the weft yarn. The movement of the movable deflector can be controlled to reduce the amount of deflection during a braking operation to reduce stress peaks in the weft yarn. The movable deflector may be controlled by a spring, an electromagnet and/or a pneumatic reciprocating actuator.

Abstract: An air jet weaving loom with a jacquard frame wherein harness threads are fed to a reed having a defined drawing-in width. Weft thread insertion devices are arranged on the weft insertion side. A catch side or weft exit side having an adjustable length, is provided with catching elements. The weft thread insertion devices have been arranged on the insertion side of the loom to be movable in the direction of the weft thread insertion for producing woven fabrics with different drawing-in widths.

Abstract: A tack-in system of an air jet loom, for forming a tack selvage at an edge section of a fabric. The tack-in system is comprised of a body of a tack-in device, which body is formed with a slit. The slit is located near an edge of an array of warp yarns. A weft yarn picked from a weft picking nozzle extends through the slit. The end section of the weft yarn picked and cut by a cutter is securely held in such a manner that at least a part thereof is located within the slit. A fluid jet nozzle is provided to eject a fluid jet from its opening which is located such that the fluid jet therefrom blows the weft yarn end section. The fluid jet from the fluid jet nozzle is so directed that the axis thereof crosses the cloth fell at an acute angle, thus securely pressing the weft yarn end section onto the cloth fell.

Abstract: In a shuttleless loom a weft filament is inserted pneumatically in a weft direction through a warp shed by a nozzle on one side of the shed and is caught by a pneumatic aspirator aligned in the direction on the other side of the shed from the nozzle. A mechanical brake aligned in the direction on the other side of the loom with the aspirator, either immediately upstream or downstream therefrom, mechanically engages and holds the yarn after same has been caught by the aspirator. This brake can be formed by a tube with an internal brake element defining a nonstraight passage or can be a pinch brake to one side of a guide arrangement that pushes the filament laterally into the pinch brake once the filament is all the way through the aspirator and some tension is applied upstream in the filament.

Abstract: A two-phase weaving air jet loom for parallely weaving two fabrics. The loom is so constructed as to form first and second warp yarn arrays which are separate from each other to define therebetween an intermediate space. First and second weft inserting or air ejection nozzles are disposed near and outside the outside edges of the first and second warp yarn arrays, respectively. The first and second weft inserting nozzles are arranged to project first and second weft yarns into the sheds of the first and second warp yarn arrays, respectively. Additionally, a yarn end portion treating device is provided to treat the end portion (projected over the inside edge of the warp yarn array) of the weft yarn so as to form a selvage and separate the same from a woven cloth.

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.