Patent GB-190608722-A (GB)
Title: Improvements in Looms for Weaving Chenille Fur for use in Making Chenille Carpets, Curtains and other Chenille Fabrics.
Filed: 1906-04-11
Granted: 1907-06-11
Abstract: 8722. Brintons, Ltd., Brinton, C. C., and Jackson, J. W. April 11. Shuttleless looms; warp tension, regulating; healds; shedding - motions ; lays ; reeds; weft, cutting ; takeup motions ; breast beams. -Relates to a loom for weaving chenille strips of the kind described in Specification No. 5793, A.D. 1906, each strip consisting of a series of yarn tufts, which are looped round two ground threads and are bound together in a row and to the ground threads by two binding-threads embracing each tuft and crossing between consecutive tufts. The ground threads 2, 3 pass from bobbins through eyes in needles 10 secured to a guided cross-bar 117, which is raised and lowered as required by a lever and a cam. The binding-threads 4, 5 pass from bobbins through eyes 137 on pivoted tension levers 135, which are d r a w n downwards to tension the threads by weights 142 attached to cords secured to bosses on the levers. The threads 4, 5 then pass over rollers 139 to eyes in needles 11, 12, which are secured to cross-bars 84, 85. These bars are raised and lowered as required by cams, levers, and_ guided rods 86, of which the bent top ends pass through horizontal slots in the bars. The bars are also moved horizontally, as required, to cross the binding-threads, by cams, levers, and adjustable rods, the return movements being effected by springs. The lay 13 is pivoted at 13*, and comprises a series of vertical bars, and through every alternate space between the bars the threads 2, 3, 4, 5 pass. Each such space is provided with a tongue or beater 52, which projects up between the ground threads 2, 3 and between the binding- threads 4, 5. The lay is rocked backwards and forwards to beat up the weft or tuft yarns. To the lay is attached a bar 19, which is provided with a guide for the tuft yarn 18 and a spring for preventing its escape. The end of yarn projecting from the guide is seized by a gripper and drawn through the shed formed by the raised threads 2, 3 and the lowered threads 4, 5. The gripper comprises a pair of pivoted jaws, of which one is secured to a rod attached to a sliding guide. The guide is reciprocated on an horizontal rod by lever-and-cam mechanism. A tumbler-stop is provided to act upon the lower jaw of the gripper to open the latter, against the action of its spring, to receive the end of the tuft yarn, and a fixed piece prevents upward movement of the gripper. A fixed roller is provided for opening the gripper after the tuft yarn has been drawn through the shed. As the lay advances to beat up the tuft yarn, the threads 2, 3 are lowered, and the threads 4, 5 are raised, and as the tuft yarn meets the inclined edges of guide 50 at the entrances to grooves in the table 6, it is bent upwards between the pairs of threads 2, 3. At this moment knives 17 are moved upwards and rearwards, so that their upper sharp edges cut the tuft yarn between the sets of threads 2, 3, 4, 5. The knives are secured to a rock-shaft 56 mounted in levers 57 on a shaft 59, which is rocked by a lever and a cam. The knives rest on pins 73 in vertical slots in guides 62, which are moved up and down through slots in the table 6 by cam-and-lever mechanism. The ends of the knives pass through spaces in the reed of the lay. If desired, scissors or rotary knives may be used to cut the tuft yarns. The chenille strips are drawn forwards through the grooves in the table 6, and the grooves end in guides 78, which are bent through a right-angle, so that the strips are laid flat upon the take-up roller 53, whence they pass over a roller 76 to a drum 77, on which they are wound. The roller 53 is rotated by ratchet-wheel gearing in the ordinary manner, the ratchet - wheel being either mounted on the roller shaft, or acting through spur-wheel gearing including a change-wheel, in order that the take up may be regulated. When a tuft is cut and beaten up, the threads 4, 5 are crossed behind it by an horizontal movement of the needles 11, 12. When tufts of various colours are required to form a pattern, as when the chenille strips are used in weaving carpets, curtains, and other chenille fabrics, one or more vertical bars provided with guides and springs for several tuft yarns are slidably mounted in guides on the lay and are raised as required, to present any desired yarn to the gripper, by jacquard mechanism, such as that described in Specification No. 11,397, A.D. 1894. Each vertical bar has a shoulder which normally rests on the lower guide for the bars, and the gripper is wide enough to seize a tuft yarn raised by any bar. Specifications No. 1118, A.D. 1887, No. 9926, A.D. 1891, No. 16,770, A.D. 1904, and Nos. 1452 and 1452A, A.D. 1906, are referred to.