Patent GB-190620215-A (GB)
Title: Improvements in Stitch Impressing or Impression Finishing Machines for Boots and Shoes.
Inventor: JUSTICE PHILIP MIDDLETON
IPC: A43D55/00
Filed: 1906-09-11
Granted: 1907-09-05
Abstract: 20,215. Justice, P. M., [Manufacturers' Machine Co.]. Sept. 11. Ornamenting; burnishing.- A machine for forming and finishing stitch indentations, or finishing the indentations formed by a separate machine, comprises a rotary tool e, Figs. 1 and 3, mounted in an arm which reciprocates about a vertical axis, so that the tool e reciprocates in a curvilinear path, the radius of this path being adjustable. The work is held on a circular rotary support a<5>; Figs. 1, 3, and 7, which effects the feed in conjunction with the tool e. The support a<5> is carried by an arm a' pivoted to a rod a<2>, which is adjustably connected to a rod a<9> of a treadle a<10>. The rod a<2> is pressed upwards by a spring a<7>, which abuts against an arm a<6> on the rod and an adjusting- nut a<8> which screws into a bracket a<1>. The arm a<4> is connected to a grooved nut b<4> on an adjustably spring-controlled rod b connected to the tread'e, and this mechanism causes the support a<5> to be tilted when it is lowered so as to facilitate operating on the toe and on the parts near the ball of the boot. The tool e is shaped like the frustum of a cone, but its teeth are preferably of the same thickness throughout, or are deeper at the narrow part of the cone, so that the teeth are more acute at the smaller part of the cone than at the larger part. This, combined with the curvilinear travel of the teeth, produces straight indentations of uniform depth throughout. The wheel is connected by means of a spring plate e<2> to a sleeve e<1>, which screws into a swinging arm d and can be adjusted by an arm d<12>, which moves the tool to and from the work and causes it to swing in a path of adjustable radius, in order to adjust the tool to the different curvatures experienced in traversing the sole. The arm d is mounted in an upper bracket a' so that it can be swung freely, and it is oscillated by a lever d' connected to a pitman d<7> actuated by a crank-pin un a shaft d<9> driven by a belt and pulley d<10> from a shaft c<5>. The arm d is provided with an arm d<2> having a pivoted tubular block d<3>, which can slide axially in the lever d'. The lever d' ia connected to the pitman d<7> by a screw, by adjusting which the extent of swing of the arm d and tool e is regulated, a long swing being used when coarse teeth are employed, and vice versa. The support a<5> is rotated by means of a double bevel-wheel c', Fig. 7, driven by a wheel c<1> on a shaft ca. The shaft c<2> is driven by a worm c<4> on the shaft c<5>, which engages a worm-wheel c<3> splined to the shaft c<2> and provided with a hub held from vertical movement by a collar c<7> which engages a bracket a<6>, or by other means. The shaft c<2> is connected to and moves up and down with the rod a', so that the wheels c, c' remain always in engagement; for a similar purpose the tilting movement of the support a<5> takes place about the axis of the wheel c. The tool may be heated, so that it burnishes as well as indents. In a modified form of tool e, the front edges 5, Fig. 9, of the teeth are inclined at a greater angle than the edges 6, in order to compensate for the travel of the work and to form symmetrical indentations. As shown, the outlines of the teeth 5 are tangents to a circle 7, and the outlines of the teeth 6 are tangents to a circle 8.