GB1391480A - Waste removal means - Google Patents

Abstract

1391480 Grinding BRITISH UNITED SHOE MACHINERY CO Ltd 9 June 1972 [10 June 1971] 26964/72 Heading B3D A waste removal hood 10 for use in a machine having a support for a tool 14 for performing a cutting or abrading operation progressively on successive marginal portions of a shoe sole member S as relative movement of the sole member and tool mounted on the support takes place, comprises an air outlet end 22 adapted to be connected to waste material extracting means, and an air intake end 20 provided by a collar 16 adapted to surround the tool 14 and having a slot 18 intermediate the intake and outlet ends extending through the collar from an outer surface to the interior and defined by opposed lips 54, 56, the sole member, when the hood is mounted in operative position in the machine, extending through the slot to engage the tool. The hood consists of a block 26 having a hollow interior 12 and a sleeve portion 22 connected by a duct 24 to the extractor means, such as a vacuum pump. A recess in the lower end of the blocks receives bearing for rotatably mounting the collar 16 having the air intake end 20 at its lower end. The slot 18 is formed intermediate the ends for receiving the shoe sole S which is fed in a straight line by rollers 66, 68 so that the edge of the shoe extends into the slot and into engagement with a shaped portion of the grinding wheel 14 disposed within the collar and rotated by an air motor 78. A spring 48 is connected between a pin 52 on the block 26 and a pin 50 on the collar and urges the collar so that the leading end of slot in the direction of movement of the shoe sole is urged into engagement with the edge of the shoe sole; the edge may be protected by a pin 64 of wear resistant material. The air motor 78 driving the grinding wheel is mounted on a support 74 carried by an arm 88 which is urged, as described in Specification to 1,229,985 about a pivot so that the wheel can follow the contour of the edge. The support 74 is secured to a post 72 on which the hood is vertically adjustable so that the upper lip 54 of the slot 18 slidably engages the shoe sole as it it fed past the wheel; the edge may have a friction reducing coating.