Patent GB-458859-A (GB)
Title: Improvements in or relating to the shaping of shoe upper parts
IPC: A43D8/00
Filed: 1935-04-26
Abstract: 458,859. Boot-making machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., and HAZELTON, G., Belgrave Road, Leicester. April 26, 1935, Nos. 12507 and 26190. [Class 17 (i)] Treeing and ironing.- Relates to machines for shaping the marginal portion of the ankle opening of a completed shoe. The shoe - supporting form is mounted for yielding movement laterally and longitudinally of the shoe. A pair of pivotally mounted presser members approach the shoe heightwise and toewardly and are operated with light pressure by a treadle and subsequently with heavy pressure by power means. In the machine shown which is of the turret type, six shoe-supporting forms 5 are supported on a rotary table 1 and are each provided with a pair of presser members 7, 9. Each form 5 has a wedge-shaped extension 13 covered with fibre 15 so as to fit the shoe, and an extension 11 with a rounded end, Fig. 8, whereby it is slidable and rotatable within limits in a casting 3 of the table 1. The form is normally urged upwards by a spring 19, Fig. 2, movement being limited by a rod 17. The presser members 7, 9 are provided with flanges 31, 33 which are secured to flanges on a horizontal rod 37 and a surrounding sleeve 39, the rod and sleeve being rotatable and slidable in a carrier 41 which has a downwardly projecting stem 45 slidable in the casting 3. The presser members are normally held apart by a tension spring 43 secured to pins 44 on the rod 37 and sleeve 39. The rod 37 carries a roller 55 at its rear end to co-operate with a groove 59 in a cam member 61 whereby depression of the carrier 41 effects forward movement of the presser members 7, 9. At the same time, the presser members are forced together by struts 67, Fig. 4, pivoted on spring-urged plungers 69 slidable in housings 71 in arms 65 of the casting 3. Each presser member 7, 9 has its inner surface covered first with a strip of leather, then a strip of rubber and finally a sheet of thin flexible leather secured by lacing ; the inner surface is plane at the upper portion and concave at the lower portion. The form 5 may be provided with an electric heating element 95. In operation, after a shoe has been positioned on a form 5 a treadle is depressed to raise a rod 111 and thereby rock a composite lever 101 which, acting on a roller 99 on the stem 45, depresses the latter to operate the presser members 7, 9 ; the stem is held depressed by a pawl 121 engaging a rack 117 at the second tooth from the bottom. On releasing the treadle, mechanism as described in Specification 343,151 engages a clutch so that the table 1 is rotated through one-sixth of a revolution, the stem 45 being further depressed by the roller 99 engaging under a cam surface 133, Fig. 3, whereby the struts 67 pass below horizontal to positively hold the presser members in operative position. As the form 5 returns to the loading station, a cam 135 engages under the roller 99 to release the presser members 7, 9 and a cam 127 engages under the tail 131 of the pawl 121 to disengage it from the rack 117. The lever 101 has a roller-engaging portion 175 pivoted thereto, and the tail 179 of this portion engages a fixed shoulder 181 when the roller 99 moves away to prevent depression of the treadle while the clutch is engaged. Should the treadle be depressed so that the pawl 121 engages the bottom tooth, the parts may be restored to normal position by rocking the portion 175 by hand to disengage its tail. The first Provisional Specification describes a machine in which pressure is applied to the presser members by a treadle and/or a hand lever acting on the carrier 41.