Patent GB-549493-A (GB)
Title: Improvements in or relating to methods of and means for assembling parts of shoes
IPC: A43D13/00
Filed: 1941-05-17
Abstract: 549,493. Assembling shoe parts. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). May 17, 1941. No. 6383. [Class 17 (i)] A machine for assembling a counter in correct position in the heel end of an upper, especially a lined upper has means for positioning the upper, a gripper arrangement for straightening the back seam and holding it under heightwise tension while a counter holder inserts a counter in the upper, means for holding the lining out of the way during this insertion, and means for wiping or laying the lining against the counter, which has previously been coated with adhesive. A last is inserted and bedded into position by the lining wiping means abutting against the cone of the last. Finally a pair of tackers are actuated to drive a tack on each side of the back seam through the lasting margin of the upper, counter flange, lining and insole, the tacks being clinched on the usual heel seat plate. A table 30 supports a pair of parallel spaced plates 34 having arcuate portions 38 serving as guides for a wiper carrier 40. Grippers comprise an outer jaw 44 on an arm pivoted at 54 to a vertically adjustable plate and provided with a fin 48 for engaging the edge of the upper, and an inner jaw 46 pivoted to the arm and controlled by a link 108 actuated by a lever 102. The grippers are depressed to tension the upper by a link 88 connected to an arm on a disc having teeth 222 co-operating with a pawl actuated by the lever 102, the wipers are formed to engage and straighten the back seam as they rise, and comprise an outside wiper 132 slidable towards and from an inside wiper 130, the wipers having convex and concave surfaces respectively, to provide friction. The wiper carrier is raised and lowered by a cam-operated rod 198, and the slide is actuated by the lever 102. The inside wiper is at the end of an arm defining a space for the reception of the heel end portion of the upper, the arm carrying members 250 for depressing the lining so that this may be gripped by the operator and pulled down to allow insertion of the counter. The holder for the counter 486 comprises a pair of arms 258 each terminating in a slot to engage the edge of the counter flange, a locating member 256 with a V-shaped end to engage a notch in the centre of the flange, and a pair of wing engaging members 272 adjustable toward and away from each other. These parts are carried by a member 260 pivoted at 262 to an arm 264 and biassed anti-clockwise by a spring 282. The arm 264 is pivoted at 266 and actuated by a lever 306 to swing the counter first downwardly and then rearwardly into the space between the upper and lining, after the wipers have reached their uppermost position. The lining is then wiped upwardly against the inside of the counter, which has previously been coated with adhesive, by a pair of wiping members 314 hinged together and urged toward each other by springs but adapted to be expanded by a member 322 pivoted to parallel arms raised by a cam, urged clockwise by a spring, being moved anti-clockwise by cam members 360, 368. The first cam co-operates with a roll 362 to ensure the wipe commencing at the right point. The second cam causes the wiper to descend clear of the lining, a roll 370 on a slide being latched by a tooth 378 as the cam moves downwardly, but being raised to clear the tooth as the cam moves upwardly. A last is then inserted in the upper and bedded into the upper by a second rise of the wipers 314. Finally; a tack is driven through the upper, counter flange, lining and insole at each side of the back seam. A hand lever 244 is provided for actuating the lever 102 to open the gripper jaws should the upper require adjustment to centre the back seam before the power cycle of the machine is initiated. A knee lever closes the grippers and back seam wipers on the upper. The operation of the lever is arrested while the rear part of the lining is drawn out of the upper, the operation of the lever being then completed to start the power cycle. In this cycle the back seam wipers move upwardly to up-wipe and straighten the back seam portion of the upper and then impart heightwise tension thereto, and at the same time the counter holder swings downwardly to insert the counter. The lining wipers perform their up-wiping movement and the machine stops while the last is inserted. The knee lever is again actuated, the lining-wipers bed the last into the upper, the counter holder swings upwardly to starting position, the tacks are driven, all parts return to starting position and the machine stops.