Abstract: A weaving machine including a device for stretching a fabric in the weaving machine includes a guide bar over which the fabric is bent to thereby bring a surface of the fabric into contact with the guide bar. An array of notches on each end of the guide bar is provided to exert an outward traction on the fabric edges to maintain the fabric in stretched condition. To enable a fabric whose width is narrower than a full weaving width to be located along the guide bar in a non-symmetrical manner while effecting a lateral traction force on the edges of the fabric; the guide bar is provided with at least one array of notches located at one end of the bar arranged so that each notch in the array is broken so as to extend circumferentially less than the full circumference of the guide bar, with the array including a plurality of notches longitudinally and circumferentially spaced along the guide bar.
Abstract: A fabric take-up system for a weaving loom includes a driven take-up roll and a pressure roll forming a nip with the take-up roll, wherein the take-up roll at least is movable transversely of its axis so that tensioned fabric received from the loom breast beam, wrapped around the take-up roll, through the nip and around the pressure roll urges the take-up roll towards the pressure roll. Devices for releasing the rolls to open the nip are described, including a support system for preventing deflection of the pressure roll over its length.
Type:
Grant
Filed:
February 24, 1987
Date of Patent:
November 1, 1988
Assignee:
Picanol N.V.
Inventors:
Philippe van Bogaert, Willy Dejonckheere
Abstract: A loom takeup apparatus is illustrated wherein cloth is fed directly from the loom to the takeup utilizing an oscillating roll which is slidably mounted for axial oscillation on the longitudinal axis of the roll for distributing the cloth so that the edge or selvage portions which are often thickened do not remain in register but rather build in such a fashion as to avoid excessively large end portions of the roll.
Abstract: The cloth take-up system is provided with an additional deflecting element which is disposed in the path of travel of the cloth between a first deflection element and the take-up roller in order to increase the wrapping angle of the cloth about the take-up roller. This additional deflection element can be integrated with the first deflection element by means of a Y-shaped member. Also, a contact-pressure element is positioned to press the travelling cloth against the take-up roller.
Abstract: The cloth take-up system drives the deflecting roller over a friction clutch to allow slippage of the deflecting roller while the cloth moves over the deflecting roller without slip. The clutch is adjustable to create more or less of a relative slip.
Abstract: In a ribbon-weaving loom, in which at least two ribbons are being woven simultaneously and must be withdrawn in substantial parallelism, at least one withdrawing roller is provided for each of these ribbons and so located that the respective ribbon is trained about it with the roller being located beneath the ribbon. A drive arrangement is provided for driving the respective rollers.