Patent GB-444584-A (GB)
Title: Improvements in circular knitting machines
IPC: D04B9/06
Filed: 1934-09-21
Abstract: 444,584. Knitting. SCOTT & WILLIAMS, Inc., 366, Broadway, New York, U.S.A.- (Assignees of Grothey, I. W. ; Laconia, New Hampshire, U.S.A.) Sept. 21, 1934, No. 27199. Convention date, Sept. 21, 1933. [Class 74 (ii)] Describes a machine for knitting socks &c., starting on bare needles, with rib tops, and plain legs &c., and embroidery patterns made by wrap yarns. To leave a path for the wrap yarn guides around the inside of the latch ring 550, it is necessary to dispense with the usual devices for operating the dial needle cams. Vertical movements for operating these needles are transmitted inside the circle of wrap fingers and down the inside of the shaft carrying the wrap stripe mechanism. For transmitting these movements there are two sets of levers for the knitting cams and transfer cams respectively. The knitting cam levers comprise thrust rods, a shaft 127 mounted above the pivot point of the latch ring 550 and carrying a crank-arm 130 and connections 131, 132 by which a rod 135 sliding in a sleeve 136 and carrying a block 615 is displaced vertically to reciprocate the dial knitting cams. A similar set of connections controls the dial transfer cams. The wrap yarn fingers 767 are held away from the transfer dial cam-block, as they move past the dial needle operating means, by a guard plate 150. A guard wire 160 separates the wrap yarns from the body yarns. Inside the stationary sleeve 136, which carries the rod 135, the dial knitting and transfer needle cams and the dial cap is a rotary shaft 151 for the dial proper and outside it and carrying a slotted ring 860 for the yarn fingers is a revolving sleeve 152 which is driven from the bobbin stand 840 by means of gearing mounted in frame 133 above the wrap stripe yarn take-ups 856. Cutting and clamping mechanism 165 provided in a holder 166 just above the latch ring 550 at a point between the throat plate and the end of the wire 160 is operated from the main pattern drum by a thrust rod &c. and a connection 177. Retraction of the connection 177 first raises a clamp arm 176 about its outer end as far as a slotted guide 178 permits and then draws arm 176 back together with a sliding bracket 179 and a cutter plate 172. When the parts are in the position shown in Fig. 11 the cutter is open and a depending arm 176b of the clamp is radially outside the yarns to be clamped and just inside the needle circle. The return movement first drops the arm 176<b> into position opposite the yarn to be clamped and then operates the cutter and causes the yarn to be pushed into the space between parts 173a and 173<a>. Any number of body yarns can be clamped by these means without at any time contacting with the wrap yarns. When a body yarn is to be re-introduced an arm F<5> pivoted with the yarn fingers F<1>... F<4> and carrying a wire 180 is lowered, the wire pushes the yarn down to the needles, while a stationary cam 185 causes the wire 180 to move laterally in the direction of movement of the needles. A separate clamp and cutter 190 for cutting off high splice and double sole yarns at each course, is mounted in an aperture in the latch ring. Specifications 196,124, [Class 74 (ii)], 362,899, 362,916, 383,840, and 388,232 are referred to.