Abstract: A weft filament is inserted as a pick in a weft direction into a shed formed between groups of warp filaments extending and generally traveling in a warp direction, and is beaten into the warp filaments by a comb to form a woven textile. A defective pick is removed from the warp filaments by a system comprising at least one stripping nozzle directed generally upstream in the warp direction and connected to a supply that feeds compressed gas to the nozzle so the gas is expelled therefrom as a jet directed generally upstream in the warp direction over the defective pick to dislodge same from the warp filaments. The defective pick is then withdrawn in the weft direction from the shed after it is dislodged from the warp filaments by the nozzle.

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: This pneumatic supply device is designed for shuttle-free weaving machines with the picking of one or more weft threads (1, 2) by elements such as picking nozzles (5, 6) and nozzle relays (10), supplied with compressed air in accordance with predetermined sequences. A robot (25) connected to a picking sequence program support (26) drives, on one hand, electrovalves (12, 16) disposed in the compressed air inlets (13, 17) to the picking elements (5, 6, 10) and, on the other hand, switching members (20, 21) enabling these picking elements (5, 6, 10) to be supplied at at least two different pressures (P1, P2; p1, p2) selected as a function of the characteristics of the weft threads (1, 2) to be inserted. The switching members (20, 21) are, for example, proportional pressure reducers enabling the control of the air pressure in a tank (18, 22).

Abstract: This device designed for weaving machines enabling a weft selection, comprises for each prefeed and measurement device (1), an electric drive motor (8) having a controlled angular position, such as a "step" motor. The angular position of the main shaft (14) of the weaving machine, detected by means of a coder wheel (24), is converted into pulses (D) which are supplied by a "switching system" (15) which may be switched from the weft selection control (16) to the electronic power circuit (17) associated with the motor (8) of the prefeed device (1) selected. It is therefore possible to drive the shaft (5) of the selected prefeed device through a predetermined number of rotations synchronously with the rotation of the main shaft (14) of the weaving machine.

Abstract: The loom reed (5) is formed of dents (9) defining a channel through which the weft is inserted and is drawn and guided by air jets produced by relay nozzles (3). To form the insertion channel, each dent (9) has a triangular projecting front part formed with a recess (6) opening towards the exterior at its top via an escape slit (7) slightly inclined relative to the longitudinal direction of the dent (9). The recess (6) has an offset (d) towards the front relative to the front straight edge of the dent (9). This feature is suitable for weaving threads with non-twisted, non-interlaced filaments, and enables beating-up to occur near the temples (8) after the weft thread has easily been extracted from the insertion channel via the slit (7).