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Class 139/109 - Tension


Subclass of Class 139 - Textiles: weaving
Definition: The rate is determined by the strain on the warp threads.
No. of patents: 9
Last issue date: 08/17/2004


NumberTitleIssue Date
6776319Strand tension equalizing apparatus
A tension device is utilized for equalizing, or at least reducing differentials in tension across strands in a web. The device utilizes an overfeed roll which rotates faster than the speed of feeding the web. Strands at the desired tension, or less, slip about the e...
08/17/2004
6725884Yarn tightening element for a textile machine
A yarn tightening element for a weaving machine, comprising a passage (16) for a yarn (15) and a contact means (2) to transmit a tightening force to a yarn (15) moving along through this passage, the passage (16) being not bordered...
04/27/2004
6070619Easing roller control method
A method of controlling the easing motion (1) of a loom executes a position control operation and a tension control operation successively in one weaving cycle of the loom. The position of an easing roller (6) included in the easing motion (1) is measured...
06/06/2000
5015002Protective bellows
A plurality of axially aligned bellows are formed in the cuff of a protective boot to accommodate a large diametric range of cylinders to be encircled by the cuff....
05/14/1991
4974639Compensator roll arrangement in a warp let-off
A warp yarn tensioning device for a loom, in which the warp yarns are wound about a compensator roller through an arc of approximately 180°. The roller is movable against the action of counteracting springs either by rotation or by translation in the dir...
12/04/1990
4934413Warp arrangement and carrier system for an automatic loom
In a looming system or method, warp yarns are mounted on a loom by the following four steps. At a first step, warp yarns of a full warp beam are drawn through a warp holding unit including a warp dropper unit, a heald unit and a reed. Then, at a second st...
06/19/1990
4619294Method of and apparatus for controlling motor-driven let-off and take-up system for looms
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 indi...
10/28/1986
4564050Method for starting the operation of a loom
A method for starting the operation of a loom always under a constant warp tension after the completion of the amendment of faults in the woven fabric such as miss-pick. A warp beam in the stationary loom is rotated by a commmand signal from a control uni...
01/14/1986
4485849Loom beam let off
A simplified loom beam let off is illustrated which utilizes a brake disc with opposed brake pads for applying uniform tension to the yarn through the loom beam gear. The pads are urged through yieldable force against the disc and such force may be adjust...
12/04/1984
 
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