Patent GB-958074-A (GB)
Title: Improvements in flat bed rib knitting machines
IPC: D04B7/02
Filed: 1961-11-10
Abstract: 958,074. Knitting-machines. S. A. MONK (SUTTON IN ASHFIELD) Ltd., and B. A MONK Nov. 8, 1962 [Nov. 10,1961], No. 40246/61. Heading D1C. A flat bed rib machine has the needles of each bed controlled by jacks 25 having recesses 24 permanently engaging butts 23 of the needles, the jacks being rockably displaceable by selector members 100 to move butts 27 on the jacks out of or partially out of engagement with the knitting cams on the cam carriage. The jacks are raised into engagement with the knitting cams by springs 29 one of which is positioned beneath each jack. The selector members 100 are controlled by three mechanisms to effect needle selection one of which comprises rib pattern control mechanism, the second controls the selvedge needles, particularly during fashioning, and the third controls the centre needles of the machine during fashioning on the centre needles when forming garments with a V neck. The rib pattern mechanism for each bed comprises a multi-sided drum 110 having perforations 112 in each side which, when the drum is raised, permit abutments 113 on arms 103 of the selector members 100 to pass through the side whereby those members are not pivoted to depress their corresponding jacks which remain in engagement with the knitting cams thereby rendering their needles operative. The remaining abutments 113 engage the side of the drum causing their selectors to pivot whereby the corresponding jacks 26 are depressed by arms 102 and the needles rendered inoperative. Alternatively the selector arm 103 may be provided with a number of abutments 115 corresponding to an equal number of selector bars 114 having depressions 116, Fig. 11, whereby by actuating bars 117 one of which is positioned beneath each bar 114 the bars 114 are in turn raised by the co-operating action of a roller 118 and ramp 122 to engage or otherwise the appropriate abutments 115 to select the needles. The selvedge needles are controlled during fashioning by selvedge cam plates 109 which are moved to engage the top of the arms 102 of the selectors controlling the selvedge needles to depress the corresponding jacks and render their needles inoperative. If tuck work is being produced the operative selvedge needles are controlled by only partially depressing their jacks ensuring that their butts avoid the tucking cam and knit in the normal manner thereby avoiding tucking taking place on any of the selvedge needles. The central needles of each bed are controlled during the formation of a V neck garment by a drum 106 having a stepped V formation 130, Fig. 7, corresponding to the desired pattern and which engages arms 104 on the selectors corresponding to the central needles whereby the selectors are pivoted to control the needles and render them inoperative over a number of courses to produce the V neck formation. The machine is made up as a multidivision machine having a central control division to control all of the divisions simultaneously. In this control division the drive to the cam carriages is initiated and hydraulic motors are provided for operating the lead screws for the fashioning stops both at the selvedges and in the centre of each division for the V-neck formation. The lead screw stops are driven by driving chains from the motors under the control of valves operated by solenoids. Alternatively pawl and ratchet mechanism may be provided operated by the motor to drive the stops. Specification 958,075 is referred to.