Abstract: A drive mechanism for driving a heald frame of a weaving machine, the drive mechanism having a crank rotating about a crank axis, a coupling rod, and a swivel lever having a first arm and a second arm, the coupling rod is linked to the first arm of the swivel lever by a second hinged joint adjustable with respect to the first arm of the swivel lever, wherein in at intended locations of the second hinged joint with respect to the first arm of the swivel lever, the second hinged joint is situated on an arc of an imaginary circle when the swivel lever is in a central position between the upper position and the lower position, wherein the imaginary circle has a radius that is equal to the distance between the first hinged joint and the second hinged joint, and the imaginary circle has a center that coincides with the crank axis.

Abstract: A drive mechanism for driving a heald frame of a weaving machine, the drive mechanism having a sensor device, wherein the sensor device has at least three members having both a target set with one or more targets and a detector set with one or more detectors, wherein one of the detector set and the target set is arranged at the swivel lever and the other one is arranged stationary on the weaving machine, targets of the target set and/or detectors of the detector set have different characteristics for generating a first signal when approaching the measuring position from the upper position or when departing from the measuring position towards the upper position and for generating a second signal when approaching the measuring position from the lower position or when departing from the measuring position towards the lower position, and the second signal differs from the first signal.

Abstract: Gripper band (1) for a gripper weaving machine with a first part (13),a second part (14)and two longitudinal ribs (21), el wherein a thickness of the second part (14) near a centerline (31) of the gripper band (1) is larger than a thickness of the first part (13) near the centerline (31) of the gripper band (1), and in that the gripper band (1) comprising the first part (13), the second part (14) and the longitudinal ribs (21) is one single, integral structure formed of composite material. Gripper unit for a gripper weaving machine with a gripper (2, 3) and such a gripper band (1).

Abstract: A drive mechanism for driving a heald frame (1) of a weaving machine, the drive mechanism (2) comprising a crank (3) rotating about a crank axis (4), a coupling rod (5), and a swivel lever (6) having a first arm (8) and a second arm (9), wherein the coupling rod (5) is linked to the first arm (8) of the swivel lever (6) by a second hinged joint (17) adjustable with respect to the first arm (8) of the swivel lever (6), wherein in all intended locations of the second hinged joint (17) with respect to the first arm (8) of the swivel lever (6), the second hinged joint (17) is situated on an arc of an imaginary circle (19) when the swivel lever (6) is in a central position between the upper position and the lower position, wherein the imaginary circle (19) has a radius (R) that is equal to the distance (L) between the first hinged joint (16) and the second hinged joint (17), and the imaginary circle (19) has a center (33) that coincides with the crank axis (4).

Abstract: A drive mechanism for driving a heald frame (1) of a weaving machine, the drive mechanism (2) comprising a sensor device (20), wherein the sensor device (20) comprises at least three members comprising both a target set with one or more targets (21, 22) and a detector set with one or more detectors (23), wherein one of the detector set and the target set is arranged at the swivel lever (6) and the other one is arranged stationary on the weaving machine, wherein targets (21, 22) of the target set and/or detectors (23) of the detector set have different characteristics for generating a first signal (24) when approaching the measuring position from the upper position or when departing from the measuring position towards the upper position and for generating a second signal (25) when approaching the measuring position from the lower position or when departing from the measuring position towards the lower position, wherein the second signal (25) differs from the first signal (24).

Abstract: Weaving machine, device and method for tucking a thread end (11, 12, 24, 25) of a weft thread (10) into a subsequent shed (15), which thread end (11,12,24,25) extends outside a shed (15), wherein thread ends (11, 12, 24, 25) are tucked into a subsequent shed (15) by a tucking device (13,14,28,29), wherein a thread end (11, 12, 24, 25) is selectively moved by a moveable arm (9, 19), and wherein the thread end (11,12,24,25) moved by the moveable arm (9, 19) beyond the separator element (8, 18) is separated by the separator element (8, 18) from the working area of the tucking device (13, 14, 28, 29).

Abstract: Weaving machine, device and method for tucking a thread end (11, 12, 24, 25) of a weft thread (10) into a subsequent shed (15), which thread end (11,12,24,25) extends outside a shed (15), wherein thread ends (11, 12, 24, 25) are tucked into a subsequent shed (15) by means of a tucking device (13,14,28,29), wherein a thread end (11, 12, 24, 25) is selectively moved by means of a moveable arm (9, 19), and wherein the thread end (11,12,24,25) moved by the moveable arm (9, 19) beyond the separator element (8, 18) is separated by the separator element (8, 18) from the working area of the tucking device (13, 14, 28, 29).