Abstract: A device for affixing a shaft drive element to a loom warp beam shaft includes a clamping element having teeth, teeth at one end of the drive shaft and teeth on the drive element, and a displacement mechanism for sliding the clamping element and drive element on the drive shaft such that the clamping element teeth and the drive element teeth engage the drive shaft teeth. Upon sliding the drive and clamping elements over the drive shaft, the clamping and drive element teeth and the shaft teeth are mutually rotated to cause oppositely facing flanks on the drive and clamping element teeth to be pressed against corresponding flanks on the drive shaft teeth and thereby prevent relative rotation.

Abstract: A weft insertion system for an air-jet loom includes at least one main blower nozzle and a compressed air supply for the main blower nozzle, the compressed air supply including stationary components and components which move together with the main blowing nozzle, the stationary and movable components being connected by a compressed-air conduit which extends between an outlet of one of the stationary components to an intake of one of the movable components. The stationary components are mounted in such a manner that the outlet of the stationary components is located above the intake of the components which move together with the main blower nozzle and, furthermore, is mounted approximately centrally with respect to the end positions of the movement of the moving components.

Abstract: A gripper loom includes guides mounted laterally outside the shed and guides displaceable into and out of said shed. Both guides engage guide surfaces of a rapier to guide the rapier, but the set of guide surfaces engaged by the guides mounted laterally outside the shed and the set of guide surfaces engaged by the guides displaceable into and out of the shed are located at different sites on the rapier.

Abstract: In an apparatus for selecting and feeding wefts to an insertion device of a weaving machine, the feeders are directly connected to eccentric drives which have an excursion corresponding at least to the paths covered by the feeders between their rest and feed positions, and each feeder is associated with a guide and arranged to compensate for transverse displacements of the eccentric drives which deviate from the reciprocating motions of the feeders. The feeders have an excursion corresponding to at least the distance between the rest and feed positions of the feeder, with each feeder together with a drive motor, the eccentric drive, and the guide forming a module to simplify matching of yarn feeders to the requirements of a specific fabric and exchange of units in case of a defect. Advantageously, the modules of neighboring feeders may be mounted in mirror-symmetric manner relative to a common plane in which all of the feeders are mounted.

Abstract: A control system for adjusting and/or checking the operational parameters of a weaving machine includes a control unit with a monitor, the control unit including an image memory for storing images of the site and/or type of thread breaks. The images are displayable on the monitor when a thread break occurs, and are associated by the control unit with selection keys which, when actuated, allow data concerning the site and/or the kind of thread break that occurred to be fed into the control unit.

Abstract: A device for forming a shed in weaving machines includes a harness and coupling elements for coupling the harness to a drive mechanism. The height of the harnesses is made adjustable by mounting respective coupling elements on setting screws integrated into the side beams of the harness elements and movable relative to the side beams for enabling individual height adjustment of each harness element relative to its coupling element. Because the height adjustment is done on the harness itself, the height adjustment can be done when the harness is inside as well as outside the weaving machine. The setting screws extend through the side beams to the coupling elements, which are situated below the harness, adjustment being effected by turning the screws from the top of the side beams to move of the harness up and down relative to the ends of the setting screws and coupling elements coupled thereto at the bottom of the side beams.

Abstract: A loom having an optical weft detector which includes a light emitter and a light detector for picking up light reflected by a weft thread in a guide duct formed by blades of the reed, is mounted on the side of the reed which faces away from the guide duct and outside the blades, the detection zone of the light detector being spatially limited to the light reflected by the weft thread in the guide duct.

Abstract: A split loom includes securing elements which can be affixed to a removable loom part to receive the harnesses before separating the removable loom part from a stationary loom part, thereby retaining the harnesses in predetermined positions until re-assembly of the removable loom part to the stationary loom part.

Abstract: A two-part weaving machine includes lamellar side parts in both portions of the machine frame. The side parts are fitted with mutually associated, essentially horizontal rest surfaces and with mutually associated, essentially vertical stop surfaces. In addition, a tightening system containing tightening wedges is provided for each machine side to press the stop surfaces of the side parts against each other.

Abstract: A method for driving a weaving machine during slow motion includes the steps of carrying out the slow motion drive using the main drive motor, and controlling excitation of the main drive motor as a function of the load on the weaving machine parts which has been predetermined and stored in a memory as a function of weaving machine part positions. The required speed of the weaving machine parts to be driven may also be taken into account in controlling the main drive motor. A device for carrying out the method includes the main drive motor, a power phase controller for the main drive motor, detectors for detecting the positions of the weaving machine parts, and a comparator for comparing the positions with stored positions in order to take into account the load data which has been entered.

Abstract: A two-part weaving machine includes a stationary machine-frame part containing at least a takeup for winding woven material, and a removable machine-frame part containing at least the bearing for a warp beam. The two machine-frame parts include mutually engaging guides which define a path for constraining the relative motion of the two parts during initial removal of the removable part from the stationary part, and during final re-assembly of the removable part to the stationary part, thus permitting fitting of the two parts together in a compact arrangement without unintentional contact between the respective mechanisms carried by the two parts, and enabling the removal and final re-assembly to be carried out using simple vertical and horizontal movements of the conveyance device.

Abstract: A split loom with a stationary loom part and a removable loom part includes selvage-formers mounted in the removable loom part, at least one selvage-former being driven by a shaft entering the loom and also mounted on the removable loom part, the shaft being connectable by a separable clutch to a drive shaft mounted on the stationary loom part.

Abstract: An apparatus for adjustably affixing a support bracket to a part of a machine frame includes an adjustment screw to adjust the height of the support bracket on the frame and a pair of oppositely movable clamp elements having oblique surfaces for wedging the support bracket in place following adjustment. Wedging is accomplished by turning a setting screw to move the clamp elements in mutually opposite directions. The setting screw is parallel to the adjustment screw, allowing equal access to both the adjustment and setting screws.

Abstract: A device for attaching a shaft in a frame includes at least two supports for carrying the ends of the shaft, a support lock which keeps the shaft on its support while permitting the shaft to turn locally, and a hinged locking mechanism for closing and opening the lock. The lock is opened and closed automatically by the hinged locking mechanism, which causes the lock to open against a biasing force in response to insertion of the shaft.

Abstract: A weaving method makes use of a set of weaving frames arranged such that, in each weaving cycle, some of the weaving frames are held in an identical extreme position, while all remaining weaving frames are moved in order to provide different tensions for the top and bottom warp threads at the moment of beating up. The shed is formed so that at the moment of crossing, as the weaving frames change position, the length of the course followed by the crossing warp threads is equal or almost equal to the length of the course followed by the warp threads held in the extreme position.

Abstract: A method for isolating a yarn end of a broken warp thread from the warp in a weaving machine, the weaving machine being provided with a warp stop motion of the type wherein drop wires have been hung up on the warp threads for detecting that a warp thread has broken, includes the steps of first putting a yarn end of the broken warp thread in a correct position relative to the warp and subsequently removing the warp end from the warp. An apparatus for carrying out the method includes a clamp located on one side of the stop motion, a carrying element for tensioning the thread by hooking it and carrying it between the drop wires in a direction transverse to the warp direction, and a device located on a second side of the stop motion for removing the thread.

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: A thread brake includes a plurality of fixed thread guide elements, at least two movable thread guide elements mounted on a rotatable body which, through rotation, can be brought in opposite directions to cross a path of a thread being guided by the fixed thread guide elements and thereby engage the thread such that the thread is bent in two places, thereby braking the thread. Rotation of the movable thread guide elements may be restricted during braking by taps appropriately positioned.

Abstract: A device for attaching an element in a frame includes a seating, a supply path via which the element to be attached is brought to the seating, and a pivotable member. In a first position of the pivotable member, a first end thereof is situated in the supply path. In a second position, the first end is situated outside the supply path and a second end of the pivotable member to move the pivotable member between its first and second positions. The first position of the pivotable element is an overcenter position in which the relative positions of the pivotable member's pivot point, the seated element, and the point of contact between the seated element and the first end of the pivotable member are arranged to retain the seated element in place within the seating. In the second position of the pivotable member, the transport device moves the element via the supply path into and out of position in the seating.

Abstract: Supporting device for the back rest in a weaving machine, characterized in that it mainly consists of a first element (13) which can move in relation to a frame (14) and a second element (15) upon which the back rest (3) has been mounted, whereby this second element (15) is attached to the first element (13) in a hingeable manner on the one hand, and is being supported by elastic element (17) on the other hand.