Patent GB-190520010-A (GB)
Title: Improvements in Machines for and Methods of Assembling Parts of Boots and Shoes.
Inventor: BOULT ALFRED JULIUS
Filed: 1905-10-03
Granted: 1906-09-27
Abstract: 20,010. Boult, A. J., [United Shoe Machinery Co.]. Oct. 3. Uppers lasting.-Relates to a machine for assembling parts of boots or shoes, and to means for securing the parts together. The parts, comprising upper, counter, lining, and insole, are loosely arranged by band upon a last, and the last is placed on the heel pin 36, Fig. 1, and raised by a bell-crank lever 42 and spring-operated plunger 48 against a serrated work-clamp 26, which engages the insole, the heel end of the last being held against a concave rest 24 Figs. 1 and 5. The lever 42 is normally held in its lowermost position by a spring- controlled rod 54, which engages a cam on the main shaft 3. Preferably the work is held by band against the stop 26 and rest 24 before the machine is started, to facilitate the accurate positioning of the work with relation to the remaining work-engaging devices. In the further movement of the main shaft, devices 82, Fig. 5, are moved by springs 78 against the upper at points adjacent to the corners of the counter. The ends of the counter are thus held against the last and side edges of the insole until the parts are secured together. The devices 82 are carried by levers 74 pivoted upon studs 76. The rear ends of the levers 74 cross each other, and are engaged by a strip 84 mounted on the lower end of a pivoted lever 86, Figs. 1 and 5. When the strip 84 is moved out of contact with the levers, the devices 82 are independently held against the work by the springs 78. This provides automatically for variations in the lasts. While the counter is held at the corners, a carrier 62, fig. 5, pivoted at 63, Fig. 1, is moved forwards longitudinally of the last, bringing a wiper 68 and presser 66 successively into engagement with the work. Before the end of the forward movement of the wiper, and preferably before the wiper tends to draw the upper over the last, a tack from an inter mittently-fed tack strip 105 is driven into the rear end of the last by an horizontal driver bar 108. The presser 66 engages the rear of the upper just before the end of the forward movement of the carrier, and forces the upper and counter closely against the last, and makes a welldefined edge at the rear of the upper. This movement imparts an impulse to the last, and moves the last and insole relatively to the clamp 26, and, in cases where the insole is loose upon the last, the rear end of the insole is thus brought closely against the counter. After the parts have been assembled, a tack is driven into the work through an orifice in the wiper by a driver situated within a casing 90, which is mounted on the carrier 62 a predetermined distance in front of the presser, which thus acts as a gauge. If desired, two tacks may be driven, one on either side of a rear seam. The complete cycle of operations is performed in a single revolution of the main shaft. A number of tacks may, if desired, be driven into the end and into the sole of the shoe, by successive depressions of the treadle while the last remains in position. The result of the operation of the presser 66 and wiper 68 is that the heel seat is, in effect, partially lasted. The lower tack mechanism may be dispensed with entirely, or, when not required, may be rendered inoperative by a latch 134, Fig. 5.