Abstract: A fabric can comprise yarns comprising less than about 30 denier total and less than about 10 denier per filament; a density of greater than about 177 yarns per m2; and a thickness of less than about 3.2 mil. The fabric can further comprises a weight of less than about 60 g/m2. The fabric can have performance characteristics equivalent to or greater than those in conventional implantable fabrics. A method of making such a fabric can include twisting together filaments into a multifilament yarn; passing adjacent yarns into a loom in parallel so as to allow the yarns to be woven together more closely; maintaining a consistent tension on the yarns during placement of the yarns on a loom beam and during weaving; and or subjecting the fabric to increased heat and pressure so as to compress the yarns more tightly.

Abstract: The loom contains a weaving station, at which warp yarns can be interwoven by means of at least one weft yarn, a device for supplying the warp yams, and a device for supplying the at least one weft yam. A shedding device for forming a shed from the warp yarns, and a weft insertion needle for inserting a weft yarn loop into the shed, are also present. The weft yam loop is tied off with a knitting needle and beaten with a reed. A take-down device serves to draw off the woven fabric that is produced. In order to produce a profiled woven article, the weaving station is assigned a fabric holder with a shaping aperture whose opening cross section corresponds substantially to the cross section of the profiled woven article that is to be produced with a round or polygonal cross section.

Abstract: A clamping device (18) for temporarily clamping the fabric (2) in place is provided on the weaving machine (1), and interacts with a ventilating device (23) that effects the temporary elimination of the clamping action. The operation of the ventilating device (23) is controlled by the movement of the beat-up device (11) via a mechanical connection that exists between the beat-up device (11) and the clamping device (18), and is effected by a mechanical transmission (28)—to be understood in the broadest terms—via which the clamping force can be eliminated or also generated in some embodiments. Due to the controlled release of the fabric at times or during phases of operation of the weaving machine (1) that can be adjusted and selected, a simple adaptation of the operation of the weaving machine (1) to different types of fabric can be achieved. An operation with less longitudinal pull of the fabric is possible.

Abstract: An off-loom take-up for winding a cloth roll from woven cloth coming from a loom which includes a frame and a pair of spaced take-up rollers carried by the frame, at least one of the take-up rollers is a driven take up roller. A drive motor with an output shaft drives the driven take-up roller, and a motor controller is provided for controlling the speed of the output shaft of the drive motor. A pivotal dancer roll assembly is carried by the frame and includes a pivotal dancer roll under which the cloth travels from the loom to the cloth take-up roll. A voltage sensor responsive to the movement of the pivotal dancer roll outputs a plurality of voltage signals correlated to a plurality of different pivotal positions of the dancer roll. An electronic limit processor is provided for receiving the voltage signals, the processor processing the voltage signals to generate a control signal which is output to the motor controller for controlling the drive motor.

Abstract: A take-up control system for controlling a take-up motion included in a loom controls the take-up motion according to the diameter of a roll of cloth being woven on the loom so that a proper tension is exerted on the cloth. A take-up controller included in the take-up control system controls a torque-controllable motor for driving a cloth roller to take up the cloth in the roll on the basis of an electric signal representing the diameter of the roll according to a control program to exert a properly adjusted tension on the cloth. The take-up controller can also control an actuator for pressing a pressing member against the circumference of the roll according to weaving conditions, or weaving conditions and the diameter of the roll, to apply a properly adjusted pressure to the roll by the pressing member.

Abstract: A take-up control system for controlling a take-up motion included in a loom controls the take-up motion according to the diameter of a roll of cloth being woven on the loom so that a proper tension is exerted on the cloth. A take-up controller included in the take-up control system controls a torque-controllable motor for driving a cloth roller to take up the cloth in the roll on the basis of an electric signal representing the diameter of the roll according to a control program to exert a properly adjusted tension on the cloth. The take-up controller controls an actuator for pressing a pressing member against the circumference of the roll according to weaving conditions, or weaving conditions and the diameter of the roll to apply a properly adjusted pressure to the roll by the pressing member.

Abstract: A room darkener fabric has about 40-60% of flame-resistant warp yarns on a face and 60-40% on the back. The warp yarns produce a fire-resistant barrier for a middle layer of non-flame resistant black yarn. About 70-90% of the black filling yarns binds with the warp yarns and forms a middle layer so that both the face and back comprise approximately 85-95% white warp yarns and 5-15% black filling yarn, with the balance of the black filling yarns forming the middle layer. The filling yarn is a non-flame resistant yarn that is solution dyed black.

Abstract: A web tension control apparatus and method utilizes a control for a drive motor (A) including an oscillating roll (B) for moving a cam (C) in relation to a proximity sensor (E) for controlling the tension in the moving web being transported for takeup. The power output of the proximity sensor is transmitted for controlling the output of a motor by control circuit (D) for maintaining the tension in the moving web within desirable limits.

Abstract: A unitary light box for inspecting cloth manufactured on a loom (10) is provided with first and second viewing areas (B) and (C), respectively, wherein cloth (F) having a vertical run is guided over an intermediate curved surface (D) for inspection providing several angles of sight to the operator from the same vantage point so as to locate defects not ordinarily visible during conventional head on observation.

Abstract: A device for automatically varying, during the transient states following loom stoppages, the shed vertex position in the loom. The device consists of a sensor for determining the beat-up pulse intensity of the loom reed. The device also is connected to a comparator which receives a predetermined set value corresponding to the beat-up pulse intensity of the reed during normal operation. The output of the comparator is used, through a control unit, to synchronously drive the electric motors that operate the beam and the take-up roller of the loom, respectively.

Abstract: The warp beam and/or cloth beam of a loom is driven by a programmable stepping motor. The speed of the motor is regulated, preferably in such a way that the tension of the warp threads remains constant. Improved tension control is obtained by further programming the motor to take into account the type of weave in the fabric being produced. This is accomplished by inputting information pertaining to the distance covered by the warp threads between their intersections with neighboring weft threads.

Abstract: A warp transfer control system for a loom, includes a first actuator for varying a warp let-off speed, a second actuator for varying a fabric take-up speed to change a filling density, and a control unit which has a take-up control section for controlling the second actuator, a feedback control section for controlling the let-off speed through the first actuator when no change is required in the filling density, and a feedforward control section for changing the let-off speed so as to improve an appearance quality of a fabric when the density is changed. When a change from a first filling density to a second density is required, the feedforward section first changes the let-off speed excessively from a first let-off speed corresponding to the first density beyond a second let-off speed corresponding to the second density, and holds the let-off speed at such an excessive level for a limited duration.

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: Motor-driven let-off and take-up motions in a loom are controlled by controlling the rotation of a motor for driving warp yarns with a tension control system operating in response to a signal indicative of a target tension and a feedback input signal indicative of an actual tension of the object during a normal operation of the loom, and controlling the rotation of the motor with a feedforward control system during a transient operation of the loom, the feedforward control system storing operation patterns of directions, and speeds of rotation and angular displacement of the motor for respective operation modes and weaving conditions of the loom. At the time of the transient operation, and operating condition of the loom is detected, an appropriate operation pattern is read from the feedforward control system based on the detected operation mode, and the read operation pattern is applied as a control signal to a drive control system for the motor.

Abstract: The catch-cord selvage of a shuttleless or fluid jet loom is drawn between a pair of mating rollers having smooth surfaces under a prescribed tension that is matched to the fabric tension as it comes from the loom. The mating rollers include an idler roller which is driven by a drive roller, with the drive roller being positively driven without slippage by the fabric take-up roll. The surface speed of the drive roller is the same as the surface speed of the fabric take-up roll so that the catch-cord and the fabric are drawn from the loom at the same speed.

Abstract: A cloth inspection stand is illustrated having a run of cloth on each side of the cloth takeup roll carried at an angle for ready inspection by one standing in the aisle on either side of the cloth roll takeup. The inspection stand makes provision for guiding a downward run of the cloth from the inspection area over a roll carried by pivoted arms for movement up and down to vary tension on the cloth.

Abstract: A method and apparatus for measuring the tension on textile fabrics in a textile machine especially a loom. At least a part of a fabric is subjected to simultaneous transverse deflections, the speed of propagation of the simultaneous transverse deflections along the fabric is determined, and the tension on the fabric is determined in accordance with the determined speed of propagation. An exciter and a receiver is utilized for initiating the transverse deflections and determining the speed of propagation thereof.

Abstract: The fabric produced by a loom is wound on a drum which is driven in rotation from the fabric take-up roller by means of a friction coupling, the friction being adjustable by means of a regulating nut. A tensioning roller which is capable of displacement under the action of the tension of the fabric actuates a pawl by means of a mechanism comprising two elbowed levers and a connecting-rod. The pawl is capable of engaging in teeth carried by the regulating nut in order to lock the nut in position and tighten-up the friction coupling when the tension of the fabric decreases.

Abstract: A tension control mechanism for cloth delivered from the loom and the like to a cloth roll carried by take-up mechanism positioned in front of the loom is illustrated wherein a sensing device engages the cloth coming from the loom under relatively light tension for driving motor control means responsive to movement of the sensor imparted thereto by variation in cloth tension.