Patent GB-190503498-A (GB)
Title: Method and Loom Apparatus for the Manufacture of Knotted Pile Fabrics.
Inventor: PARUSZEWSKI EDWARD
Filed: 1905-02-20
Granted: 1905-06-29
Abstract: 3498. Paruszewski, E. Feb. 20. Looms, pile-forming in ; creel frames. -Rolates to looms for weaving knottedpile fabrics. The variously - coloured tuft-yarns are selected by the manipulation of a keyboard apparatus, of which each key operates a number of yarnfeeding and knotting devices, according to the number of repeats of the pattern in the fabric. On a key 1 being pressed down, which is advantageous)y indicated by a piece of yarn of the colour desired, an elbow-lever 2 moves backwards a slide 3 and the upper end of a toothed rack 4 against the action of a spring 20, the rack, which is supported by a roller 5, being turned partly round a toothed wheel 6, so that a beak 7 on the rack is brought into the path of a bar 8, which is continuously moved up and down by suitable mechanism. The rack is moved upwards by the bar, and turns the wheel 6 to a greater or less degree, depending upon the position of the beak 7 upon the rack. The rack is held in the raised position, as long as the key is depressed, by a notch 18 engaging a bar 19, which may have a spring action. Each wheel 6 is fixed to a disk 10, having a beak 9, which, when a wheel is turned, acts through a bar 11 to turn a chain-wheel 12, from which motion is communicated by chain and spur-wheel gearing to a disk 17. The tuft-yarns of different colours are wound upon reels or cops 22, and are led to the feed-disks 17, from which they protrude through holes in the periphery, and where they are lightly held in position by means of spring pressers in such a manner that they can be readily drawn out. A creel frame, feed-disk, and knotting-apparatus are provided for each repeat of the pattern, and are mounted at intervals across the loom. The disk 17 is, at each depression of a key, brought into such a position that the protruding end of the required tuft-yarn is at the lowest part of the disk, and opposite horizontally-sliding tongs, by means of which a definite length of the yarn is drawn through the disk. The two ends of this length are seized by grippers g<1>, g<2>, Fig. 7, mounted in a vertically-sliding frame, and then the length is cut off by means of shears. The grippers g<1>, g<2> ara partially rotated, so that their cranked ends twist the ends of the yarn inwards into the position shown in Fig. 7. The frame of the grippers is then moved downwards so that the grippers pass through the warps with two warp threads between them, the ends of the tuft-yarn being brought under these warps. At the same time, a middle gripper m has been brought between the grippers g<1>, g<2>, and seizes the ends of the tuft-yarn which are released by the other grippers, drawing them upwards and thus knotting the tuft-yarn round the two warp threads. The middle gripper at the same time draws the loop thus formed by a rocking motion towards the finished part of the fabric, and then releases it. The mechanism for actuating the grippers, tongs, and shears is fully described and illustrated. Each tufting-apparatus is mounted in such a manner that it can be gradually moved across the loom to form complete rows of tufts. The transverse motion is caused by a screw-threaded spindle engaging threaded sleeves, on one of which each apparatus is mounted. The spindle is partially turned at each depression of a key by means of a ratchet-wheel 52 and pawl 51 actuated by a crank-disk on a shaft 41, and a connecting-rod 49. The shaft 41 is driven by chain and bevel gearing from a shaft 35, which is coupled to the driving- shaft 32 by means of a clutch K when a key is depressed. The clutch is operated by a lever 31, a rod 30, and a crank-disk fixed to a toothed wheel mounted at the end of the series of wheels 6. This toothed wheel is partially turned by means of a rack similar to the racks 4 and operated in a similar manner by means of a lever 24 which is connected to a bar 23 extending beneath the keys 1. The tufting-apparatus is operated from a shaft 47 driven through bevel gearing from the shaft 41.