GB212064A - Improvements in machine for uniting looped fabrics - Google Patents

Abstract

212,064. Keyser, G., and Hepworth, J. W. Feb. 9, 1923. Knitted - fabric sewing machines.- In a linking machine, the pin ring is continuously rotated and the stitch-forming mechanism is bodily reciprocated tangentially to the said ring so that the needle moves in time with the ring when in engagement with the work. Feed. The pinring 19, Fig. 6, is revolubly supported by a disc 18 fixed to the shaft 17, Fig. 1, which extends downwardly from an arm 11 of the bed-plate 10. The pin ring 19 is rotated continuously from a mainshaft 12 by means of a shaft 34 and a worm 33, a worm wheel 27 on a shaft 24 and an internal toothing on the ring 19. Stitch-forming devices. The needle and looper shafts are mounted upon a support 39, Fig. 6, mounted in the arm 11 and reciprocated in opposition to a spring 52 by a cam 51 which engages a part 45 secured to the support 39. A channel shaped contact member 47 is adjustably positioned on the part 45 by a set-screw 50, Fig. 1. The curved needle 54 is carried by an arm 56 fixed on a shaft mounted in the support 39 and is oscillated by means of a second arm having a pin slidingly engaging in the eye of a rod 61 of an eccentric 62 on the shaft 12. The looper 55 is mounted on an arm 66 of a rock-shaft 67 mounted at right-angles to the needle-arm shaft in the support 39 and a crank pin on a second arm 69 on the shaft 67 has a. ball-and-socket connection with an eccentric rod 72, 73. The contacting surfaces of the strap. 73 and its eccentric 68, Fig. 5, are spherical so as to allow the eccen. tric-rod to rock laterally and follow the reciprocation of the support 39. The trap 73 is held in place by a ball 74 running in a groove 76 in the eccentric and maintained in place in the strap on a radial line at right-angles to the rod 72 by a spring 77. The connecting rod 61 is held from lateral movement by a slotted bracket 65 secured to the frame 11, and lateral movement of the support 39 is allowed by axial motion of the pin 60 in the eye of the rod 61. Thread-tensioning device. The needle and looper threads pass through guide-eyes 85, spring- pressed tension-discs 83 and spring take-ups 88 on the arm 80 of the support 39, thence through guide eyes and along suitable grooves in the needle and looper arms to the needle and looper eyes.