GB190918025A - Improvements in or relating to Machines for Rounding or Trimming the Heel Seats of Boots and Shoes. - Google Patents

Abstract

18,025. Boult, A. J., [United Shoe Machinery Co.]. Aug. 4. Trimming.-Relates to heel-seat rounding or trimming machines of the type in which the trimming-knife comprises a flexible die adapted to conform to the shape of the shoe counter, and consists chiefly in means for conforming the die to the counter during the relative movement of the die and cutting-block, and in means to ensure that the heel seat is trimmed close to the shoe counter. The die 21, Figs. 1 and 3, is located beneath a shoulder 25 on the inside of a holder 22, and is held in place by guide studs and slots 50, Fig. 1, and an adjustable spring 20 secured to a rod 19 whieh passes through a standard 18. This bracket depends from a carriage 15, which can be adjusted by screws 16 in a lateral extension 14 of a vertically-reciprocating head. The holder 22 comprises a pair of curved members shaped approximately to the contour of the shoe counter. They are supported by wings 23 pivotally mounted on the standard. 18, and their upper edges are in sliding engagement with the horizontal portions 24 of the carriage 15. The outside of the members 22 have formed on, or attached to them, wedgeshaped curved ribs 26, with which is adapted to co-operate an adjustable forked lever 27 pivoted about a stud 28 projecting from a bracket on the standard 18. The lever 27 is also pivoted at 30 to a block 31 slidably mounted on a guide-rod 32, which is pivotally and adjustably connected to an arm 33 projecting from the main standard 11 of the machine. The position of the block 31 is controlled by a sleeve 34 connected to the block, and an adjustable spring 35. As the reciprocating head moves downwards, the lever 27 swings about the pivot 28 to contract the die-holder until the die conforms to the shoe counter. The lever then moves downward with the head so as positively to prevent any release movement of the holder or die during the cutting operation. After this operation, the lever 27 moves upward with the head until the sleeve 34 is stopped, whereupon the lever .swings about the pivot 28 to allow the die to expand. Counter guards 41, Figs. 3 and 5, are adjustably and yieldingly mounted within the dieholder 22, and between their lower ends is located a wedge-shaped gauge 40 adapted to engage the rand crease The work-support is mounted on a standard 51, Fig. 1, adjustable by means of a screw and nut in a member 52, which is pivotally supported on a bar 54 ; a lug 55 located between adjustable stops 56 determines the relative location of the cutting-block at the head of the worksupport and the die. The cutting-block comprises two side pieces and a back piece adjustably clamped in flanged bed-plate 58 ; this provides a recess in the front of the support to receive the convex part of the heel seat. The pieces comprising the cutting-block can be turned when worn. The relative positions of the work-support and die are arranged as in Fig. 1, so that the heel seat is trimmed close to the shoe counter, and on a slight bevel.