Patent GB-398883-A (GB)
Title: Improvements in or relating to tension-devices for yarn or like strand material
IPC: B65H59/22
Filed: 1932-03-23
Abstract: 398,883. Tension devices for yarn or like strand material. UNIVERSAL WINDING CO., 95, South Street, Boston, U.S.A. March 23, 1932, No. 8707. Convention date, July 21, 1931. [Classes 120 (ii) and 142 (iv).] In a tension device for yarn or like strand material, particularly silk, rayon, and other glazed yarns, and applicable in beaming, spooling and warping operations of the type comprising two co-operating tension discs one above the other, between which the yarn passes, one of the discs being rotated by the travel of the yarn and carrying a yarnengaging sleeve which projects into an opening into the other disc, the sleeve-carrying disc is disposed above the other so that the sleeve during operation of the device is in rolling engagement with the rim of the opening in the lower disc to rotate the latter frictionally. The device comprises a bracket 2, with a portion 6 having a raised rim 7, and arms 9, 10 connected to a central hub 8. A third arm 11 connected to the hub extends to a portion 12 of the bracket 2. A stud 32 is secured to the hub 8 bv a screw 35 and carries the tension discs 30, 31, the lower one 30 of which has a rim 39 supported on knife edges 40 on the arms 9, 10, 11. The upper disc is formed with a sleeve 41 which projects into the flanged opening of the lower disc, and is also grooved at 42 to form an annular shoulder 43 so that the yarn only contacts with the upper disc at its points of entrance and exit. A head 34 on the stud 32 prevents complete separation of the discs. In operation the yarns y passes from the source of supply which may be a cone in a creel frame through an opening 17 in a hook portion 15 of the bracket 2, and is threaded into a guide eye 20 carried in a bridgepiece 18 extending from the arm 14 to the portion 12 of the braket 2 by drawing it up along a beak 16 on the hook portion 15. Thence it passes between the tension discs in contact with a portion of the sleeve 41 and passes out to a second guide eye 21 comprising a porcelain member held on a wire arm 22 secured bv a screw 25 to a face 23 of the portion 12 of the bracket 2. The porcelain member has an axial passage 26 for the yarn and an opening 27 for threading purposes. The yarn in passing rotates the upper disc 30, the friction of the sleeve 41 on the stud 32 controlling the rotation, and the contact between the sleeve 41 and the flange 37 on the lower disc causes the latter to rotate at a lower speed. The tension discs may be stamped from sheet metal and the stud 32 mav be of oil or graphite impregnated wood. If desired the flange 37 on the lower disc may be dispensed with, and to prevent complete separation of the discs a rim may be formed at the lower edge of the sleeve 41 to replace the head 34 on the stud 32. The annular shoulder 43 on the upper disc may be dispensed with and instead of supporting the lower disc on knife edges, any other form of anti-friction support may be used. The rotation of the discs during operation causes lint or fly, or oily substances given off from rayon and like synthetic materials to be thrown off and not deposited on the discs. A number of these devices may be used on a creel wherefrom a large number of yarns are to be beamed, spooled or warped. The bracket 2 is formed at one end with a jaw 3 having a setscrew 5 for attaching the device to a convenient part of a machine.