Patent GB-190700497-A (GB)
Title: Improvements in or relating to Pounding-up Blocking and Ironing Machines for use in the Manufacture of Boots and Shoes.
Inventor: BOULT ALFRED JULIUS
Filed: 1907-01-08
Granted: 1908-02-08
Abstract: 497. Boult, A. J., [United Shoe Machinery Co.]. Jan. 8. Uppers.-Relates to pounding-up, jiggering or smoothing, and ironing-machines of the type described in Specifications No. 18,883, A.D. 1904, and Nos. 20,009 and 20,009A, A.D. 1905. The pounding-up device 106, Figs. 1 and 2, is mounted in a carrier 100, and is actuated by its own inertia as the carrier is oscillated. The jiggering or smoothing device consists of two rollers 8, Fig. 2, arranged one on each side of the device 106 on shafts 6 mounted in the forked ends of brackets 4 extending from the machine frame. The rollers are continuously rotated in opposite directions by spurwheels 10 and belt gearing 12, 14, 16 from a pulley fast on the main shaft of the machine. The rollers are arranged to engage the shoe, at and adjacent to the angle formed by its side and bottom faces, so that they co-operate with the device 106 to form a well-defined edge. They may be either smooth or ribbed, but preferably they are formed with oppositely-inclined spiral grooves so that each tends to work the side of the upper upwardly toward the edge of the shoe. They may be arranged so that a shoe can be thrust endways between them ; any convenient means may be provided for heating one or both of them, so that the shoe will be ironed. The driven parts of the machine are actuated from a shaft 34, Fig. 7, which carries a cone clutch and a fixed pulley, the hub of which is grooved to receive an arc-shaped piece 52 pivoted to an actuating- lever 54. The latter is acted upon by a spring 60, which tends always to throw the clutch into gear, but for moving the lever in the opposite direction there is provided a slide 66, Figs. 7 and 8, carrying a roller 68 which rides on an incline 70 on a block secured to the lever. A spring 66 tends to position the roller at the bottom of the incline, in which position the spring 60 is free to close the clutch. The slide 66, however, also carries a lug 78 located in the path of the segmental lower end of a lever 80, which is connected by a rod 84 to a treadle. A spring 90, Fig. 1, normally holds the treadle elevated, so that the roller 68 will be at the top of its incline and the lever 54 in a position to hold the clutch open. At the other end of the shaft 34 is a crank-disk 98, Fig. 1, engaging a block 101, which fits in a guide in one arm 104 of a pivoted angle-lever 105. The other arm 110, Figs. 1 and 7, of this lever is provided throughout its length with a curved flanged groove to receive a segmental block 112, which is pivoted to the rear end of a link 116. The front end of the latter is pivotally connected to a lever 120, which is mounted on a pin 122 and prov ded with forked extensions to carry cushion blocks 124. The carrier 100 is fulcrumed on the pin 122. To vary the length of stroke of this carrier, the block 112 can be adjusted in the arm 110, for which purposes the block has rack teeth to engage a pinion on one end of a shaft 113 mounted in the angle lever 105. The other end of this shaft also carries a pinion which engages teeth on the end 78 of the lever 80. The arrangement is such that the first movement of the treadle to throw the clutch into gear causes little or no movament of the carrier 100, so that the pounding-up device is inoperative. A further movement of the treadle, however, raises the block 112 to render the device operative and to control the length of its strokes. The rollers may therefore be used while the pounding-up means are idle; but by adjusting the bracket 24, Fig. 2, the tension of the belt 14 cm be slackened sufficiently to stop the rotation of the rollers, so that the pounding-up device can be used alone if desired. The rollers also serve as edge rests for the shoe. In addition to the rollers, a blocking or jiggering hammer may be used. This consists of a striking-member 140, Figs. 9 and 10, the stem of which engages a recess in the head 132 and shank 130, Fig. 9, of the hammer, while a tongue piece 141 slides in grooved ribs 134. A pin 145 secures the parts together, and also limits the forward movement of the striking-face, the backward movement being limited by the engagement of the faces 148, 149 with shoulders 136, 138 on the head.