Patent GB-578641-A (GB)
Title: Improvements in or relating to strip material adapted for application to shoe insoles to form sewing ribs or in or relating to machines suitable for use in applying suchstrip material
IPC: A43D43/06
Filed: 1944-04-14
Abstract: 578,641. Shoe insoles. BRITISH UNITED SHOE MACHINERY CO, Ltd. (United Shoe Machinery Corporation). April 14, 1944, No. 6891. Addition to 558,641. [Classes 17 (i) and 17 (ii)] [Also in Group VIII] A composite strip for application to insole bodies to form sewing ribs, as described in the parent Specification, is provided with a reinforcement strip which engages one side of the rib and the adjacent part of the base layer, and may extend beyond it for adhesive attachment to the insole body, so that relatively flimsy material may be employed for the body. The strip may be made as in the parent Specification, modified, if desired, by substituting a line of chain stitching for the lock stitch seams, or, as in Fig. 37, by attaching a rib strip 512 and a narrower inner strip 518 centrally or laterally to one side of a base strip 510 by a single row of chain stitches 520. In each case a reinforcing strip 516 is attached by adhesive to the inner face of the rib and, if desired, to the base layer to extend beyond it. The undersides of the reinforcing strip 516 and base layer 510 are coated with adhesive for their attachment by pressure to the insole. A machine, Figs. 1, 3, for applying a strip of the form shown in Fig. 37 to an insole body comprises guide means 40 for the strip S, means for feeding the strip from a reel, means for pressing the strip progressively against the cemented margin of the insole body to effect the adhesive attachment, means 262 for removing folds or wrinkles from the applied strip, and a knife 374 for severing the strip at the end of an applying operation. The means for pressing the strip against the insole body comprise a presser foot 160, which receives also a motion to feed the strip, and then to press it at localities at each side of the rib against the insole body, and an auxiliary presser member 230 which presses those portions of the strip more inwardly of the insole body than the parts engaged by the presser foot 160, in the intervals between feeding movements of the strip by the foot 160. During a brief interval in each cycle both the feet 160 and 230 are raised from the work to permit the operator to turn the work in the machine. The strip S is passed through a channel 54, Fig. 12, in a strip guide 40 which is angularly adjustable on the machine frame and is set with its lower curved end 50 parallel to a circular work supporting table 70, on which the insole is supported, and which may be raised or lowered, under control of a treadle 74, to permit the insole body to be introduced. The front of the curved portion 50, Fig. 10, rests on a ledge 82 on the front face of an edge gauge 84 which contacts the edge face of the insole body. A hand-lever 104 through a toothed segment sets the gauge to position so that the outer edge of the strip is first applied to the insole body in the region of the breast line with the toe end to the right of the operator and with the outer edge of the strip spaced inwardly from the insole edge. Operation of the treadle 74 releases a spring 72 to raise the work support to operative position where it is held by toggle links 78, 80. Depression of a treadle causes a chain 444 to be pulled and cause shaft 194 to be rotated to operate the feeding foot 160 first to engage that portion of the strip which extends from the strip guide 40 to press it at both sides of the rib against the insole and then to feed the insole body and strip, after which the presser number 230, operated through a rock shaft 186, presses spaced localities of the inwardly extending portion of the reinforcing strip against the insole body to cause any fullness of the strip which may occur to form in a recess 232, Fig. 18, between a pressing face 234 and a tacking face 236 on the foot 230, the face 234 pressing and flattening in the succeeding feed movement that part of the strip which has been tacked by the face 236 in the previous movement. As the ball portion of the insole body is reached, the operator moves the edge gauge 84 by the handle 104 to bring the outer edge of the strip flush with the edge of the insole, and, wherever a fold sufficiently prominent as to be objectionable is formed, e.g., at the toe end is approached, a cylindrical cutter 262, housed in the recess 232 in the foot 230, is operated by a disc 302 on release of a pin 328 of a pin clutch by pull on a chain 366 by depression of a treadle by the operator, to sever them. The rate of feed is at the same time reduced by the lever 210. After passing the ball line, the edge gauge 84 is again adjusted rearwardly to position the strip inwards of the insole edge. Release of a treadle when the breast line is reached causes the shaft 194 to stop in a portion of its cycle in which the cutter 262 is at rest, and a lever 380 is then operated to cause the knife 374 to pass through aligned slots 375, 372 and 272 to sever the strip S with a portion projecting from the end of the strip guide 40 ready for operating on another insole body.