GB230857A - Improvements in circular knitting machines - Google Patents

Abstract

230,857. Barth, E. [Firm of]. March 14, 1924, [Convention date]. Addition to 206,808. Circular machines.-In addition to racking the needle-cylinder periodically, in making diagonally striped work as described in the parent Specification, the thread guide may also be rocked, in the opposite direction, to increase the range of patterns obtainable. The guide is held by a rotatable spindle 17<a> to which is keyed a cog wheel 17 driven in either direction by a reversible pawl 16 pivoted on a slide 15. The lower end of a lever 14 connected to the slide bears on a pattern chain provided at intervals with lugs 12 which thus move the guide in a predetermined manner. The pattern drum 10 is racked round by a pawl 7, acting on a ratchet 8 and pivoted to an arm 5 running on a cam 4. The arm 5 may be held from movement, or the throw reduced, as for instance while the plain neck-band of a neck-tie is being knitted, by a bell-crank 21 acted on by a lug 20 on a drum 19. Another bell-crank 23 may be operated by a lug on the pattern-chain to stop the movement of the needle-cylinder by holding the driving-pawl 24 out of action. The throw of the slide 15 is regulated by changing the position of the pivot 13 of the lever 14. The mechanism 16, 17 may be applied to the needle cylinder or be replaced by a crank and connecting-rod. The needle-cylinder may be rotated continuously in the opposite direction to the neeedle-cams.