Patent GB-585078-A (GB)
Title: Improvements in or relating to shoe upper conforming machines
IPC: A43D21/12
Filed: 1945-01-27
Abstract: 585,078. Lasting boots and shoes. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Jan. 27, 1945, No. 2176. [Class 17 (i)] A machine for lasting the margin of the toe end portion of an upper inwardly over an insole on the bottom of a last in the upper and against a lip on the insole has means for positioning the shoe heightwise thereof relatively to the lasting means and additional means for positioning the shoe lengthwise and laterally by engagement with the insole lip at the toe of the shoe. Shoes of various styles and sizes may by this means be satisfactorily adjusted both heightwise and with respect to tipping movements with a reduced number of sets of plates for positioning the shoe. The invention is described as applied to a machine constructed generally as in Specification 520,194 with alternative positioning means to the positioning plate 2 of that machine, and with substitution for the wipers of that machine by a retarder constructed as described in Specification 582,313. The device for positioning' the shoe heightwise in relation to the wipers 2, Fig. 3, comprises a block 10 mounted on the enlarged head 8 of a rod 6 which corresponds to the rod 22 of the earlier machine. The block carries three pins 12, the end faces of which may be inclined to correspond to the curvature of the last bottom and which engage the insole on the last inwards of the insole lip a with one pin engaging it near the toe end, to fix the shoe heightwise and against lengthwise and lateral tipping movement. The block 10 is adjustable about an axis widthwise of the last in accordance with the lengthwise curvature of the last at the forepart in guides 14 carried by plates 18 secured to the head 8 by turning a knob 24 on a rod 22 held against lengthwise movement and screwing into a rack bar 20 slidably' mounted in the head 8 and engaging teeth formed on the block 10. A pin pressed forward by a spring engages one of a number of recesses 34 in a flange on the knob 24 to hold the block 10 in adjustable position. A pointer on the block 10 in conjunction with marks on one of the plates 18, serves to guide the operator in adjusting the block. The shoe is positioned lengthwise and laterally, the insole lip is supported against the inward pressure of the wipers, and the margin of the insole is held against the last bottom by a plate 40 shaped to conform to the lengthwise contour of the inner face of'the lip around the toe end and with a rim 44 with flanges extending on oppusite sides of the web 42 so that it may be inverted for operation on both right and left shoes. The three pins 12 are received in three holes in the web 42 of the plate 40, the holes being large enough to permit free movement to the pins. Three spring-pressed plungers 50 mounted in the block 10 urge the plate 40 downwards, and a latch member 54 controlled by the operator by a knob 78 prevents the plate 40 from falling free when there is no shoe in the machine, and retains it in a manner which permits ready inversion or exchange. If the toe rest 38 which supports the shoe toe during the lasting operation is so arranged that the shoe may yield downwardly under the pressure of the wipers 2, the springs 52 associated with the plungers 50 cause the plate 40 to move downwards with the shoe. Specification 540,174 also is referred to.