Patent GB-562243-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B11/32
Filed: 1942-10-07
Abstract: 562,243. Knitting machines. WILDMAN MFG. CO. Oct. 7, 1942, No. 14089. Convention date, Oct. 18, 1941. [Class 74 (ii)] For turning the welt of a full-fashioned hose upon a straight-bar machine, the welt points 50 are so shaped and operated that each point pierces a loop 62 of the initial course and a loop 64 in a subsequent course and transfers the two loops to the needles to close the welt. The loops 62, 64 may be loose stitches and they may be separated by a tight stitch 63. The remainder of the welt fabric may be of a uniform tight stitch. Each point 50 may be formed as described in Specification 562,264. Means may be provided for retaining the welt rod 170 in position above the fabric as the first part of the welt fabric is being knitted, and pattern - controlled means as described in Specification 562,245 are provided for dislodging the welt rod so that it falls upon the fabric. Fabric take-up mechanism is continuously connected to the welt rod throughout the knitting of the welt, and additional driving means are provided for rotating the take-up reel 181 to give increased tension immediately after the welt rod is dislodged. The welt points 50 are mounted upon a bar 65, and to obtain substantially horizontal movement of the points to-and-from the needles the bar is secured to arms 67, 68 actuated through links 70, 85 by a cam 87. In its movement, the bar 65 is guided by surfaces 124, 125 upon arms 122, 123, and to obtain substantially vertical movement of the points, the arms 122, 123 are rocked by a cam 138 coaxial with the cam 87. Pins 118, 119 upon the arms 67, 68 rest on the surfaces 124, 125 and are provided with flanges 120 engaging the arms 122, 123 so that the points can be moved lengthways of the needle row by the arms 122, 123. When a projection 155 upon the side face of the cam 88 engages a lever 151, the shaft 128 upon which the arms 122, 123 are mounted is moved axially, so that the arms 122, 123 and bar 65 are moved laterally. In operation, the points 50 are moved towards the needles, are lowered and are then moved laterally a distance of half the needle pitch so as to engage the sinker and divider loops. The points are then moved away from the needles, the first part of the welt being knitted. The welt rod is then dislodged, and the points are moved slightly towards the needles and are raised slightly to fold the fabric over the welt rod. The elevation of the points and the tension of the fabric take-up upon the rod 170 results, as shown in Fig. 5b, in the points 50 holding the loops 62, 64 of two courses. Further inward movement and subsequent lowering of the points effects the transfer of the loops 62, 64 to the needles.. Dislodging of the welt rod and increased tension of the take-up are obtained by the raising of a member 186 by a cam 196 arranged on the side face of the cam 138. In the movement of the bar 65 from the needles, a pin 185 upon a lever 184 is engaged by the member 186 and a pusher member 183 engaging the welt rod is actuated. A bracket 226 upon the member 186 moves a mask 223 to allow an operating pawl 211 to become active upon a ratchet wheel 207 upon the take-up reel 181. Specifications 396,280, 411,517 and 562,265 also are referred to.