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: 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.

Abstract: A device for moving a back rest in weaving machines includes two movable supporting mechanisms between which the back rest is mounted, an eccentric for moving the supporting mechanisms and whose eccentricity can be modified, and a driving wheel for driving the eccentric. A mechanism provided between the driving wheel and the eccentric permits a continuous setting of the phase of the eccentric in relation to the driving wheel. The mechanism includes a seating formed in the driving wheel, an element which fits in the seating and which can be axially turned in relation to the driving wheel to which the eccentric is coupled, and a clamp for clamping the element at any required angular position in the seating.

Abstract: Supporting mechanism for the back rest in a waving machine, consisting of at least two supports which support the back rest at its respective ends, characterized in that each support (11) essentially consists of at least two leaf springs (12, 13) mounted next to one another and attached at one of their ends (14, 15) to one another and to the weaving machine, and which at their opposite ends (16, 17) are also connected with one another in order to support the back rest (3).

Abstract: Attachment for guard plates in weaving machines, characterized in that it essentially consists of at least three couplings (3), each formed by a cylinder-shaped element (4) which is attached to the guard plate (1), and a seating (5) which is mounted to the frame (2) of the weaving machine and which closes flexibly round the cylinder-shaped element (4), whereby at least one coupling (3) is situated at the top of the guard plate (1), whose cylinder-shaped element (4) has a vertical or almost vertical axis (6), and whereby at least two couplings (3) are situated at the bottom of the guard plate (1), whose cylinder-shaped elements (4) have horizontal or almost horizontal axes (7) in line with each other.

Abstract: Method for controlling the warp let-off on weaving machines, with the characteristic that the method consists of: detecting the variation with time of at least one of the parameters which are a function of the warp tension and speed of motion of the warp threads; taking the detected signal and removing the effects due to variations in the weave pattern; and using the resulting cleaned signal to control at least one warp drive motor.

Abstract: A process for manipulating fallen warp thread detector drop wires and revealing their location includes gripping and rotating a fallen wire, while spreading adjacent wires of the pack apart by a spreader and raising the fallen wire above the pack. Apparatus for gripping, rotating, spreading and lifting is disclosed.

Abstract: An apparatus for determining the location of a warp thread break in weaving looms using drop wires, including detection devices 6 to identify warp thread breaks, movable drop wire locators 7 to determine the warp thread break locations, switching devices 8 arranged to actuate the drop wire locators 7, causing the drop wire locators to move until a fallen drop wire is encountered, and indicators on the drop wire locators to indicate the position of the drop wire locator along the warp threads.

Abstract: A process for locating weft thread defects in woven fabrics includes using a macro (close-up) lens and video camera to produce an enlarged image of the fabric, and then observing and evaluating the weft pattern from the video generated image. Transmissive and reflecting illumination may be used on the fabric to enhance the video image. Evaluation and measurement of weft thread positions is carried out by direct visual observation or by using computerized pattern recognition systems with micro processor techniques involving digitizing the video image. A relaxation defect of weft thread is determined by measuring variation between weft thread spacing when the fabric is viewed from two different viewing angles.

Abstract: During the weaving process, the location and displacement of the cloth line and/or the breast beam are continuously detected; the detected value is supplied to a drive unit; in the event of a variation in cloth line location with respect to the desired location, the breast beam is moved by means of a drive unit such that the cloth line is returned to the desired location, or in other words, the cloth line is automatically maintained and/or returned almost to the desired location by means of the breast beam.

Abstract: A weft cancellation mechanism for gripper looms, characterized by consisting primarily of a bar (7) located in a position situated between the feed of the weft (4) and the shed (2) which forms an angle with the weft or wefts (4), this bar (7) being attached to an electromagnet (9) which, once a weft breaks, is activated so as to remove the weft (4) offered up to the gripper from the path of the gripper (6).

Abstract: A shot seeking mechanism for weaving looms characterized by consisting primarily of the combination of two clutches (1 and 2), each of which is respectively constituted primarily of clutch units (5 and 6 and 7 and 8) whereby one of these clutches is placed between a drive component (3) and a driven component (4) of the main shaft of the machine, while the second clutch (2) is placed between the driven component (4) of the main shaft of the machine and an auxiliary drive motor (13).