Patent GB-103101-A (GB)
Title: Improvements in Methods of and Machines for Placing Tuft Yarns through the Tubes of a Tube-frame for use in Carpet and like Looms.
Inventor: JUSTICE PHILIP MIDDLETON
IPC: D03J1/14
Filed: 1916-11-14
Abstract: 103,101. Justice, P. M., (American Warp Drawing Machine Co.). Nov, 14, 1916. Tuft-yarn tubes, threading; creel-frame arrangements. - A machine for threading tuft yarns through the tubes of extra-long tube frames carrying two or more spools of ordinary length comprises means for holding a single spool in operative position with respect tc a bank of threading-needles, and means for holding the tube frame in successive positions, so that the yarns from the first spool are threaded through a section of the tubes, and the spool is removed from the holding-device and placed on the tube frame, which is then moved longitudinally to bring a second section of tubes opposite the needles to receive the yarns from the second spool inserted into the holding-device, anrl so on, until all the tubes have been threaded. The tube frame, comprising a carrier 2, Fig. 9, and tubes 1, has the usual end clips for the spools and intermediate brackets 5, each carrying a split journal support 6, in which the pintles of adjoining spools rest. One portion 7 of the support 6 is pivoted at 8 so that it can be lifted to insert or withdraw the spool, and it is secured to the fixed portion by a screw 9 or other device. In order that the spools may turn together in the frame, the end face of the pintle of one spool may have a slot 10 to engage a corresponding key on the face of the opposed pintle. The tube frame is supported in the machine on a support 14, Fig. 4, which projects for a suitable distance beyond each side of the machine frame 15. The carrier 2 rests on projecting arms 16 on the sup. port, and the tubes 1 rest on a raised plate 17. A tube rest 18 is provided within the machine frame and has grooves to engage the tubes, which are held clamped by a swivelling bar 19 with a grooved lower face, the trunnions of the bar 19 being mounted in arms 21, which overhang the tube frame and do not interfere with its adjustment along the support 14. The threading operation is performed by hooked needles 30 on a cross-bar 31, operated by a rack 32, pinions 34, 36, segmental gear 37, and cam-groove 41, as described in Specification 9468/10. The grooved guide-bar 60 for the needles is mounted on levers 61, which are actuated against the action of springs 64 to move the bar 60 into operative position by cam-inclines on the cross-bar 31 and are pivoted at 62 on the arms 21. The transfer comb 12 is held in a grooved bar 80, which is moved longitudinally to cause the yarns to be engaged by the needle hooks as described in the abovementioned Specification, and the lever which moves the bar 80 is curved to prevent interference with the movement of the tube frame. The spool 4 is held in the machine between cup-shaped holders adapted to be rotated to take up slack in the yarns and normally held against rotation by a ratchet-wheel and a pawl, which is disengaged by a cam to slacken the yarns as the needles are retracted, all as described in Specification 15683/12. At one side of the machine, the plate 17 is widened to provide a trimming- gauge for the tuft-yarn ends.