Patent GB-954317-A (GB)
Title: Multifeed, independent needle knitting machine
IPC: D04B15/68
Filed: 1961-09-14
Abstract: 954,317. Knitting machines. WILDMAN JACQUARD CO. Sept. 14, 1961 [Sept.28, 1960], No. 32962/61. Heading D1C. A multifeed, independent needle knitting machine comprises a drum 32 rotated continuously during knitting and carrying a pattern strip with surface deformations which select sensing means, the selected means being engaged by cam-like means when in their active position to impart a needle displacing movement thereto, the drum starting means being effective to move said camlike means into their active position. The machine may be a superposed cylinder or cylinder and dial machine. The pattern drums 32 as shown are mounted in pairs each driven by one of the synchronously rotating shafts 34 through a pinion 35 and a gear 36 rotatable on a clutch shaft 37. A gear 39 keyed to shaft 37 drives a pattern drum 32 through a gear 40 which is freely rotatable on shaft 31 and rotates a sleeve, carrying drum 32, and connected by dogs. to the hub of gear 40 and a hub on disc 42 also rotatably secured to shaft 31. Behind disc 42 is a plate 45 with a pin 46 which extends through one of a series of holes in the disc and into one of a similar series of holes in the drum of which there is one fewer. Thus the drum may be stepped through small distances. A dog-clutch 47 comprises a hub grooved at 48 keyed on shaft 37 and having dog receiving notches 49, 50. A link 53, has, at one end a fork 52 to engage groove 48 and is pivoted to a short arm secured to a spindle 56 at whose top there is an arm 58 by which it is turned to move clutch 47. When dog 59 on gear 36 is engaged in notch 49 shaft 37 is rotated and turns gear 39 and with it gear 40 and the drum 32. When clutch 47 is shifted dog 59 is released and notch 50 is engaged with a dog 61 projecting from a disc 62 with a hub which receives the end of shaft 37 so that the shaft is positively stopped. Thus, when shaft 37 is started again, it starts at the same point in the pattern. Levers attached to the upper and lower ends of a sleeve 57 operate a second moving device like that at 52 and 53 control a drum at the opposite end of shaft 31. An endless pattern strip passes over each drum and has perforations at its edges which engage the teeth portions at the end of each drum to be driven by them. Perforations in the pattern strip are aligned with helical grooves in the drum to receive a spring pressed pin 62 on one of the spring biased lever 63 so as to push the lever radially inwardly, (dot and dash line Fig. 1). The inner end of the lever is then in the pathway of Jacquard cam 64, which rocks the lever 63 to elevate a jack 13 to a position where it may push directly on its needle or slider or where its own butt 25 enters a cam track. A cam 65 ensures that the levers 63 are returned to their initial positions by their springs. Cams 64, 65 are attached to slotted stem members 74, 75 held in position by screws passing through the slots into slide bars 71, 72 which move vertically in guide ways. Rollers or the like 76, 77 at the upper end of bars 71, 72 engage in a cam groove 78 in a cylinder cam 73 having a four armed star wheel 79 at its upper end rotatable on a shaft 80. Cam groove 78 is so shaped that the cams 64, 65 are raised and lowered through 90 in succession. A toe 82 of a plunger 81 engages a star wheel 84 with six arms, alternate ones of which carry depending rollers or the like 85. Wheel 84 controls the position of a spring-biased sliding trip member 88 which acts on a series of star wheels 95 one for each drum or selecting section. Each engagement of wheel 84 by toe 82 will turn it through one sixth of a revolution and will alternately push member 88 in by means of a roller 85 and release it to be returned by its spring. Each wheel 95 carries a three lobed cam 97 so that as the wheel is turned through one sixth of a revolution cam 97 pivots a lever 99 having a pin 101 engaging a notch in an arm 58 to operate a clutch 47. Star wheels , 79 are actuated by a radially sliding trip member 103 having toes 104, 105 and a central cavity to receive a cam 107 on a spindle 110 actuated by an arm 111. Arm 111 is operated by a star wheel 98 provided on one unit in addition to wheel 95 to push slide 103 inwardly to engage each wheel 79 in succession and bring cams 64, 65 into action. Cam 112 operates arm 111 to retract slide 103. Specifications 365, 031, 542, 210, 815,557 and U. S. A. Specification 2,861,443 are referred, to.