Abstract: A method for the insertion of a weft thread into a shed of a rapier weaving machine is presented in which the weft thread (3) is taken up by a bringer rapier (10) and fixedly clamped in the same by means of a thread clamp, is inserted into the shed by means of the bringer rapier and is taken up by a taker rapier. In the said method the clamping force of the thread clamp in the bringer rapier is additionally controlled during the weft insertion in such a way that the clamping force (F0) during the take-up of the weft thread and/or during the transfer of the weft thread is reduced relative to the clamping force (F1) in the insertion phase lying therebetween.

Abstract: A thread clamp for a rapier head (1) is presented which contains a clamping part (4) for firmly clamping a weft thread (3) and an actuator (5) for moving the clamping part (4). The actuator (5) includes a ferromagnetic core (12), an armature (11) and at least one winding (13) which is arranged on the core or armature in order to produce a magnetic field in the latter and to move the armature and the clamping part, which is operatively connected to the latter, with the core (12) having two limbs (12.1, 12.2) between which the armature (11) is movably arranged, and with each limb being provided with a permanent magnet (14.1, 14.2) in order to hold the armature at one of the two rest positions in the current-free state of the winding.

Abstract: A selvedge tucker for the formation of a cloth edge in a weaving machine is presented which includes a selvedge tucking needle and a first drive implemented as an electrical drive which moves the selvedge tucking needle during normal operation of the weaving machine for tucking one or more weft thread ends into a shed formed on the weaving machine, wherein the selvedge tucker includes a second drive moving the selvedge tucking needle into a safe position in the event of a disturbance of the first drive and/or a deactivation of the first drive in order to prevent accidental contact between the selvedge tucking needle and other components of the weaving machine.

Abstract: A method for the pressure regulation in a weaving machine (1) is presented, in particular in an air jet weaving machine having a pressure regulating system (10) and a weft insertion system for the insertion of a plurality of different weft threads (2, 2?). In the weft insertion system a thread store (2a, 2b, 2a?, 2b?) and a main nozzle (3, 3?) is provided for each different weft thread, with the main nozzle drawing off the respective weft thread from the thread store and accelerating it during the insertion. In addition, there is provided in the pressure regulating system, for a group of main nozzles together, a pressure regulator (20) with a pressure sensor (21), a multi-way valve (22) and a regulator (23) arranged separate from it, with the regulator being connected to the pressure sensor and to the multi-way valve, and the pressure regulator (20) is coupled for the insertion of a weft thread to the main nozzle (3, 3?) of the group corresponding to it.

Abstract: A cutting device (10) for a weaving machine (1) is presented which includes a first blade (12.1) on a first blade carrier (11.1), a second blade (12.2) on a movable and guided blade carrier (11.2) and a drive which cooperates with the movable blade carrier and includes a pneumatic actuator (14, 14?) and a spring (15) in order to part a weft thread (2) to be inserted into a shed or inserted into a shed. The spring (15) can be stressed by means of the pneumatic actuator (14, 14?) and the two blades (12.1, 12.2) can be closed by means of the action of the spring.

Abstract: A thread clamp for a rapier head (10) for the firm clamping of weft threads (2, 2?, 2?, 2??) in a rapier weaving machine is presented. The thread clamp (1) has first and second holding members (3, 4) which can be pressed against one another in a clamping region (3a, 4a) in order to hold the weft threads. Moreover, one or more deflection elements (7, 7?) are provided at the thread clamp in order to deflect the weft thread or threads (2, 2?, 2?, 2??) and to increase the holding force, with at least one deflection element (7, 7?) being controllable.

Abstract: A method for holding an inserted weft thread in an air jet weaving machine is presented which is provided with a reed (8). In this method the weft thread is inserted into the air jet weaving machine, is deflected by means of a nozzle (3) out of the weft insertion direction (9) and is blown into a receiving opening (5a) of the catching channel (5) and held in the same. The position of the nozzle (3) and of the catching channel (5) is for this purpose matched to the desired cloth width within the width of the reed. In the named method the nozzle (3) and the catching channel passage (5) are arranged at the beat up side of the reed (8).

Abstract: A method for the insertion of a weft thread (2) into a shed of an air jet weaving machine (1) is presented in which the weft thread drawn from the thread store (21) is accelerated by means of an acceleration nozzle (3, 4) and supplied to the shed; the weft thread is transported further in the shed by means of a plurality of auxiliary nozzles (5.1 a-c to 5.n a-c); and measured values dependent on the speed of the weft thread and/or on the path traveled by the weft thread are measured in contact-free manner by means of one or more measurement pickups (7.1, 7.2, 17). In the method at least one of the measurement pickups is formed for multiple measurement within the weft insertion and is arranged at or after a first acceleration nozzle (3). Furthermore, measured values are measured in contact-free manner a plurality of times during the weft insertion by means of the at least one measurement pickup (6, 6.1-6.

Abstract: A catching device (1) for holding an inserted weft thread in a rapier weaving machine having at least one rapier (6), which is movable along a rapier track (6a), includes a holding channel (5) which can be mounted in a stationary manner on the rapier weaving machine in order to take up a thread end of the inserted weft thread (9) and to hold it. In addition, the catching device includes a deflection nozzle (3) which can be mounted in stationary manner on the rapier weaving machine in order to deflect the thread end of the inserted weft thread to the holding channel (5).

Abstract: An apparatus (1) for the insertion of weft threads in a weaving machine is presented. The apparatus includes a nozzle holder (9) and, secured thereto, at least one nozzle (3) with a mixing tube (6) for the insertion of a weft thread (2) as well as a clamping device (7) which can be charged with a medium in order to firmly clamp a weft thread which is introduced into the nozzle. In addition the apparatus (1) contains at least one control valve (8) which is arranged at or in the nozzle holder (9) or nozzle (3) in order to control the clamping device (7).

Abstract: A cloth draw-off apparatus (10) for taking up a cloth (8) in a weaving machine is presented which includes two driven draw-in rollers (3, 5) around which the cloth is led, and optionally or as the case may be, a respective pressing roller (4, 6) to press the cloth against each of the two draw-in rollers.

Abstract: A method for the insertion of a weft thread into a shed of a rapier weaving machine is presented in which the weft thread (3) is taken up by a bringer rapier (10) and fixedly clamped in the same by means of a thread clamp; is inserted into the shed by means of the bringer rapier and is taken up by a taker rapier. In the said method the clamping force of the thread clamp in the bringer rapier is additionally controlled during the weft insertion in such a way that the clamping force (F0) during the take-up of the weft thread and/or during the transfer of the weft thread is reduced relative to the clamping force (F1) in the insertion phase lying therebetween.

Abstract: A power supply for a rapier head (1) of a rapier weaving machine, which is connected to a rapier bar which can be displaced in the longitudinal direction or to a band (2) which can be displaced in the longitudinal direction, is presented. The power supply includes an inductive coupling device with at least one primary induction coil (8) and with at least one secondary induction coil (9) which can be inductively coupled to the primary induction coil, with the secondary induction coil (9) being formed on the rapier bar or on the band (2) respectively.

Abstract: A weaving machine for the manufacture of leno cloths includes a leno apparatus with leno elements (5, 5?, 7, 7?, 8, 8?) for the forming of a shed (6) as well as additionally a cleaning apparatus with a plurality of nozzles (10.1, 10.2, 11, 13) for the removal of contaminations in the region of the leno apparatus and of the shed (6). Two of the nozzles (10.1, 10.2) are arranged above the shed, by means of which a compressed air flow (16.1-16.4) which is directed downwardly through the shed (6) from above is produced, and one of the nozzles (11) is arranged in the lower region of the leno elements, by means of which a compressed air flow (17) which is directed substantially horizontally towards the leno elements (5, 5?, 7, 7?, 8, 8?) is produced. In addition, a suction nozzle (13) by means of which a downwardly directed suction air flow (19) is produced is arranged beneath the shed.

Abstract: A thread clamp for a rapier head (1) is presented which contains a clamping part (4) for firmly clamping a weft thread (3) and an actuator (5) for moving the clamping part (4). The actuator (5) includes a ferromagnetic core (12), an armature (11) and at least one winding (13) which is arranged on the core or armature in order to produce a magnetic field in the latter and to move the armature and the clamping part, which is operatively connected to the latter, with the core (12) having two limbs (12.1, 12.2) between which the armature (11) is movably arranged, and with each limb being provided with a permanent magnet: (14.1, 14.2) in order to hold the armature at one of the two rest positions in the current-free state of the winding.

Abstract: In accordance with the invention a thread carrying apparatus is proposed with a thread (2) lying in contact with or passing along the thread carrying apparatus with friction in the operating state. The thread carrying apparatus includes excitation means (3) for producing oscillations which reduce the frictional force between the thread (2) and the thread carrying apparatus. In this arrangement a resonator body (4) is provided with the thread (2) lying in contact with or passing along the resonator body with friction in the operating state. The resonator body (4) is designed in such a manner that the excitation means (3) produce resonant structural sound oscillations in the resonator body (4).

Abstract: A controlled thread brake for braking a weft thread (10) in a weaving machine is presented which comprises a brake band (3) and a brake body (2), with the thread brake (1) additionally comprising an electromagnet (6) and a rotatable or rocking lever (4) which can be moved by means of the electromagnet. The lever (4) is connected to the brake band (3) so that a pulling force can be exerted in the longitudinal direction of the brake band by means of the electromagnet (6) in order to be able to press the latter against the brake body (2) for braking the weft thread.

Abstract: An inserting rapier (1) for a rapier weaving machine with a thread clamp (4) for the firm clamping of a weft thread (3) is presented, with the inserting rapier also including a guiding or holding device (10) with a guiding or holding element (5) and a mass (6) which are movably arranged on the inserting rapier and with the guiding or holding element (5) being movable by means of the inertia of the mass (6) in order to guide or hold the weft thread.

Abstract: A jet weaving machine is proposed in which a weft thread (S) can be inserted by means of a fluid from a weft insertion side (2) to a receiving side (3), including a weaving sley (9), along which a weft insertion path (4) extends, which determines a weft insertion direction (A), and including a monitoring apparatus (20) which is arranged at the receiving side (3) and which comprises two sensor devices (21, 22) for detecting the weft thread (S) or parts of the weft thread respectively, with exactly one of the sensor devices (21) being firmly mounted on the weaving sley (9).

Abstract: A weaving machine having an apparatus for tucking in one or more weft thread ends (2?a) and for forming a cloth edge (10) as well as a shed forming apparatus for forming a shed (14) with a shed apex (14a). The apparatus for tucking in one or more weft thread ends (2?a) includes an air tucker (4) which is arranged outside the cloth width (12) and at least one additional blowing nozzle (6) which is arranged within the cloth width (12), and the jet direction (6a) of which is oriented towards the shed apex (14a) in order to be able to blow the weft thread ends (2?a) into the shed apex.