Patent GB-417554-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B9/38
Filed: 1934-01-08
Abstract: 417,554. Knitting. STANDARDTRUMP BROS. MACHINE CO., Laconia, New Hampshire, U.S.A.-(Assignees of Houseman, H. E. ; Laconia, New Hampshire, U.S.A.) Jan. 8, 1934, No. 699. Convention date, Nov. 13, 1933. [Class 74 (ii).] Relates to the production of hosiery &c. having clocks in shogged and wrapped patterns on machines with rotary needle cylinders by the use of several sets of pattern mechanism for controlling the shogging. The sets are mounted on a single trick wheel to move cyclically side by side and are rendered selectively active to vary the shogging sequences. At the end of each cycle of operations they are returned to initial position. The trick wheel 135 is vertically slotted to receive two sets of tricks or jacks 138, 140 having frangible butts. The tricks 140 and the position of their butts determine the pattern ; the tricks 138 determine the return of the shogging mechanism to initial position. The tricks 138, 140 control three levers 128 and nine levers 130 respectively, mounted on a common post. The levers 128 can be put out of action by a member 142 engaging ears 214. This member is carried by a lever 144 controlled by a cam 150 on the main cam disc 151. A second trick wheel 152 controls needle selection in relation to the wrap yarns by action on levers 208 which correspond to the levers 130. The two trick wheels are simultaneously operated by ratchet gear. Each ratchet 136, 154 has one low tooth. The driving pawls 158, 162 work over stepped guard plates 176, 183 connected together and pattern controlled. When the low teeth arrive under the pawls 158, 162, the position of the guard plates determines whether the trick wheels temporarily stop or continue to rack. The positions thus attained by the trick wheels are those desired to begin knitting a new article. The trick wheels may however, be stopped in any position (e.g. during heel knitting) when it is not desired to interrupt the continuity of the wrap pattern by bringing a high step under the pawls 158, 162. The twelve levers 128, 130, act on three pins 132 carried by bell-cranks 118 mounted on a common shaft 120. Three of the four levers adapted to engage any particular pin control active shogging for pattern formation ; the fourth shogs the wrap finger head back to initial position for starting another article. When the levers 130 are not under selection, the pins 132 bear against the bell-cranks 118. Pins 117 on the arms 118 are brought within range of bell-cranks 108 carried by a constantly oscillating arm 13. The horizontal portions of levers 108 so acted on get under the level of a cam 110 and engage a pin 106 on the corresponding shogging lever 100. The three levers 54, 56, 58 can thus be selectively rocked to shog the wrap head forward or backward. The levers 208 are grouped to be acted on by three levers 204 linked at 202 to levers 200 under control of the main pattern drum. When the levers 204 are rocked counter-clockwise their respective groups of levers 208 are rendered inoperative, being withdrawn both from the face of the trick wheel 152 and from the path of the lower needle jacks. The links 202 carry nuts 210 which abut on levers 212 and put out of action the levers 130 corresponding to the levers 208 acted on by the levers 204.