Patent GB-465807-A (GB)
Title: Improvements in or relating to apparatus adapted for use in assembling boot or shoe bottom units
IPC: A43B23/22
Filed: 1935-11-15
Abstract: 465,807. Boot-making machines. UNITED SHOE MACHINERY CORPORATION. Nov. 15, 1935, No. 31647. Convention date, Nov. 16, 1934. [Class 17 (i)] Sole blanks, machines for.-A machine for assembling a sole 10, a metal shank stiffener 12, and a reinforcing piece 11, has gauging devices for locating the parts in the machine and relatively to each other, and a presser member for moulding the assembly and causing the parts to adhere together, adhesive having been previously applied. A work-supporting form comprises an interchangeable heel seat and shank portion 15 provided with holes 22 for engaging dowel pins, a steel block 18 having a surface corresponding to the curve at the forward end of a shank stiffener, and a flat portion 16 for the fore end of the sole. The rear end of the sole is located by fingers 25, geared together and urged inwardly by a spring 27, the pivots of the fingers being eccentric, to allow adjustment. Similar fingers 37, 38 engage the shank portion of the sole, but the finger 38 is adjustable to one of three positions according to whether the shank stiffener is to be in the median line of the sole, or off-set ; the latter case requiring two positions one for right and one for left soles. To this end the finger 38 is pivoted at 39 to its arm 30 and held in one of three positions by a spring- plunger 44 selectively engaging a hole in an extension of the arm 30, or a hole at the end of either of arms 40, 41, both pivoted at 39 and adjustable towards or from the extension by a right-and-left hand screw turned by a head 50. One of the fingers 25 has a depending lug engaging the arm 30, for opening all the fingers when inserting the sole. To position the fore end of the sole, the part 16 of the form is provided with a number of plates 55, of a thickness corresponding to a half size. Normally, the plates are level with the upper surface of the form, but each is formed with inclined slots 57 engaging rods 56. In front of the plates is a scale 58, graduated in halfsizes, and adjustable, for style of shoe, on release of a clamping screw 60. The appropriate plate is slid forwardly, and then rises above the other plates to serve as a stop for the toe end of the sole. To position the forward end of the shank stiffener and to bend the sole about the block 18, a presser member is secured to a link 90 connected to a treadle. The link is connected to a vertical slide 85 having an arm 84 guiding a slide 65 normally depressed against a stop by a spring 67 and guiding a second slide 66 normally depressed against a stop by a spring 68 and carrying at its lower end fingers 72 spaced to engage the sides of the end of the stiffener. The slide 66 carries a gauge 73 having flat surfaces 76 in stepped relation, the gauge being adjusted by a handle 75, provided with a spring pin to retain it in adjusted position, so that that flat between the fingers 72 may locate the stiffener in correct endwise position. To determine the adjustment, a plurality of strips 77 are provided, each appropriate for a certain size and style. The strip is positioned abutting against the selected plate 55 and the handle 75 is turned until one flat 76 engages the upturned end of the strip. The gauge 76 is thus set to determine the position of the forward end of the stiffener. The head 64 of the presser carries a finger engaging the upper face of the stiffener between the fingers 72. To mould the assembly and cause the parts to stick together a power operated presser member is carried by an arm 97 pivoted at 100 to a lever 101 pivoted at 102 and actuated by a cam 104. The presser is, normally, in out-ofthe-way position, but can be swung over the work by a handle 111. The arm 97 carries a link 124 formed with a step 127 co-operating with a stop member 120, pivoted at 102, controlling a roller clutch between the cam 104 and a constantly rotating member 113 which rotates the cam one revolution when the arm 97 is pulled forwardly. The cam is fixed to a shaft 112 shaped to co-operate with rollers 114 and to be driven by the member 113 when the roller cage 115 is free. This is provided with a stop 117 co-operating with a resilient member 121 carried by the arm 120, and with an arm 118 arranged to engage the link 124. As the arm 97 is swung forwardly, the step 127 raises the stop 120, releasing the cage and clutching the cam to the member 113. When the arm 118 reaches and raises the link 124, the stop 120 drops, re-positioning the member 121 into the path of the stop 117, thus releasing the clutch at the end of one revolution. The presser is carried by a plunger 95 urged downwardly by a spring 98 and comprising a rubber body 92 shaped longitudinally to the contour of the block 15, grooved at 94 and faced with leather 93. The plunger 95 carries a stop 131 to engage a slide carrying the fingers 25, 29, 30 to depress these against the resistance of a spring 34. A spring 105 urges the arm 97 upwardly. Specification 418,669 is referred to.