Patent GB-294640-A (GB)
Title: Improvements in or relating to methods of and means for inserting metallic fastenings in the manufacture of boots or shoes
IPC: A43D69/04
Filed: 1928-06-21
Abstract: 294,640. United Shoe Machinery Corporation, (Assignees of Goddu, G.). July 29, 1927, [Convention date]. Machines using continuous wire.-A machine for inserting into boots, particularly for securing uppers to soles in through-stitched work, fastenings which do not wholly penetrate but are anchored in the insole or sole, is arranged to curve the fastening in a direction away from the sole edge, means being provided for varying the degree of curvature imparted to the fastening, and is provided with means ensuring that the fastener inserting nozzle shall always be in firm engagement with the work, without attention from the operator who is holding the work in his hands. The improvements are described as applied to a machine of the kind described in Specification 283,978, [Class 17 (i), Boots' and shoes, apparatus for making &c.], an adjustable edge rest 20 and sole rest 22, Fig. 2, being provided. The gripper 40 and its operating means and the controlling and operating means for the cam shaft 54 are substantially as described in the abovementioned Specification. The fastener-inserting means, which serves for laying the margin of the upper over the insole, is mounted for movement in a direction inclined to, and inwardly of, the insole on a slide 72, Figs. 4 and 6, which is moved by a cam on the main shaft. A plate 82, Fig. 8, secured to a fixed bracket 78 is shaped to provide an outside staple former 84. A shearing plate 88 co-operates, for shearing a staple length, with a nozzle 90 fixed to and movable with the slide 72 and supplied with wire from a reel by a flexible tube 110 and suitable feed rolls'. A stop plate 100 controls the length of wire fed. An inside former 112 co-operating in adjustable, relation with the former 84 is mounted on. and moves with, the slide 72. The staple is held and guided for driving by nozzle members 116, Fig. 6, secured to plates 120 which are relatively adjustable on a bracket on the slide 72. A spring guiding member 130 extends between the legs of the staple as it is being driven. A member 136 for transferring the staple from the former 84 to the nozzle members 116 is mounted on a slide 138, Fig. 4, vertically movable in the slide 72. Hence, as the former 72 advances, it shears a staple length of wire, carries the former 112 into engagement with the former 84, and the member 136 with it, and the latter is then advanced to transfer the staple by a link 144, bell-crank 146, Fig. 2, and spring 152 under control of a cam roll. A staple driver 128 is secured to a slide 158 movable in a bracket on the slide 72 and operated by a block 168 adjustable on a lever 164. The latter is operated for driving the staple by a lever 174 and adjustable torsion spring, the lever 174 having a roll 180 engaging in a cam slot 182 in the lever 164, the slot having eccentric portions at each end for accurately determining the position of the driver at the ends of its movements. For retracting the driver against its operating spring the lever 174 is swung, as the slide 72 advances, bv a latch member 192 pivoted to a lever 188, Fig. 4. The latch is released, for operation of the driver, by the engagement of stops 200, 202 and by a cam and a roll on the lever 188. For curving the legs of the staple progressively as they enter the work a member 210, Fig. 6, is provided which is pivoted removably on a pin 214 and has deflecting grooves 212. The position of the member 210 relatively to the stapling nozzle is adjustable, for varying the curvature of the staple legs, by an eccentric 222 on a shaft 224, and a handle 226, Fig. 2 movable between stops 228, 232 in a bracket member 230. The stop 232 is itself adjustable and the bracket 230 is also adjustable about the shaft 224 in order to vary simultaneously the position of the stops 228 and 232 for operating on different classes of shoes. The relative curvature of the two legs of the staple can be varied by varying the distance of either nozzle member 116 from the member 210 by adjusting the plates 120. The deflecting member 210 serves for laying the upper upon the insole in fastening position as the slide 72 advances. The latter is given also a downward movement towards the work by means of a lever 246 and cam roll. This movement serves to press the deflector 210 firmly against the upper materials before a staple is inserted, without attention from the operator. The slide 72 is again swung upwardly before the driver 128 is retracted. In operation, a shoe is held in engagement with the guides 20, 22, the gripper 40 makes a pull, and the fastener inserting mechanism moves inwardly of, and at an angle to, the insole, the member 210 laying the upper upon the insole. The forward movement of the slide 72 forms a stable and retracts the driver. The slide 72 is then swung downwardly as described, the gripper releases the upper, and a staple is driven. The relative arrangement of the member 210 and driver 128 causes the staple s to be inserted with its head parallel to the edge of the insole and its legs curved in the body of the insole and extending inwardly, that is away from the sole edge, as shown in Fig. 15. Specification 236,566 also is referred to.