Patent GB-189810718-A (GB)
Title: Improvements in Knitting Machines and Knitted Fabrics.
Inventor: JOHNSON JAMES YATE
Filed: 1898-05-10
Granted: 1898-11-05
Abstract: 10,718. Johnson, J. Y., [Scott, R. W., and Williams, L. N. D.]. May 10. Circular knitting - machines. -The d r i v i n gwheel 4 gears with a bevel-wheel 6 having an upwardly-projecting tapered split flange 7, which is wedged inside the needle cylinder 8 by an annular wedge 9 drawn downwards by a screwed ring or nut 12. The cylinder can thus be readily removed after a striped leg has been knitted, and can be transferred to another machine for the foot to be knitted. Web holders 15, Fig. 18, work in tricks in a ring, and are operated by the usual cam ; the shoulder 15<a> abuts against the needle cylinder to limit the inward motion, and the other end of the holder abuts against the outer part of the ring to limit the outer motion. T h e thread - carriers 61 and their actuating pattern drum 47 are carried by arms 49 pivoted at 50. The arms 49 can be turned on their pivots out of the way to allow of the cylinder being removed, and can be locked by a catch in either position. The main pattern drum 29 is racked by a pawl 25 pivoted to a lever 22 loose on the shaft 23 and acted on by a grooved cam 21. Backward motion of the drum is stopped by a pawl 33 ; by depressing the lefthand end of the lever 34, Fig. 2, both pawls 25 and 33 can be raised out of action and held in that position by a lever catch 40. Studs 102 on the drum 29 act on the pawl 106 pivoted to the arm 105 fast on a shaft 23. The pawl 106 can yield in one direction ; it has three faces 109, 110, 111, and the passage of a stud 102 in three successive motions of the drum rocks the shaft 23 into three positions. When a pin 102 acts on the faces 109 and 110, the shaft 23 is rocked sufficiently to raise a finger 127 out of range of a pin 126, to allow a spring 125 to press a slide 124 inwards against cams on the wheel 6. These cams raise the slide 124 at certain parts, and push it outwards at others. When the slide is raised it acts through a lever 118, and depresses a cam and causes the needles to draw longer loops on a few needles in the course preceding and following and during the change of yarns in striping. When the pin 102 comes under the face 110, the arm 105 and shaft 23 are rocked sufficiently to withdraw a stop 57 from a pin 56, and allow the drum 47 to be racked by the pawl 44, 53, lever 42, 43, and cam 41. Pegs 71 act on the levers 70, 68, 67, 66, and cause sectors 65 to be rocked between the carriers during the change of yarn ; these sectors draw the idle yarns taut and prevent them from being carried to the needles by the carrier going into action. A V-shaped latch guard 73 with bevelled inclined ends 74 opens the latches as the needles pass between the inner and outer walls of the same. Studs 60 on the drum 47 act on the tails 61 of the thread-carrier levers ; a rod prevents the tails from bearing on the drum. The studs 102 are arranged on the main drum 29 in a spiral, and the pawl 105, 106 is guided on the spiral by a lug 104, on the same sleeve 103 with it, engaging a thread 100. Adjustably connected to the pawl 105 is a slide 116 having a cam 117 which acts on the depressing-cam to vary the length of the stitch. A pin 122 on the slide 116 acts on the shipper lever to stop the machine at the required time.