Patent GB-817827-A (GB)
Title: Improvements in or relating to apparatus adapted for use in heating outsoles
IPC: A43D95/12
Filed: 1954-09-07
Abstract: 817,827. Heating outsoles. BRITISH UNITED SHOE MACHINERY CO. Ltd., AINSWORTH, J. R., and QUARMBY, R. C. Dec. 6, 1955 [Sept. 7, 1954], No. 25854/54. Class 17(1) Apparatus for heating outsoles comprises a housing, supporting means within the housing providing a plurality of supports to carry outsoles in step by step manner along a closed path in the housing, and heating means within the supporting means, the housing comprising a plurality of closure members which may be opened simultaneously to permit a flow of cool air past the outsoles, when the apparatus is to be left. The supporting means comprises gripping means at each support arranged so that the outsoles are gripped as they move along the path in the housing and are released when in a position from which they may readily be removed. The apparatus is used to soften adhesive previously applied to the margins of the outsole prior to the attachment of the sole to a shoe. As shown, drum D carrying the sole supports is contained in a metal box B which is mounted on a hollow pedestal and has an opening 20 in its top and another in its base. Drum D which is freely mounted on shaft 22 comprises end discs 26 joined by rods 34, rods 28 rotatable relative to discs 26, and V-shaped wires 36 welded to pairs of rods 34 and passing around the intermediate rods 28 to form a wire grid with eight flat supports S. Two wire clips 38 adjustably fixed to each rod 28 by clamps 40 are engaged with the outsoles by means of springs 44 acting through arms 42 to rotate rods 28, and released at the unloading and loading stations by a cam 52 acting through rolls 48 on arms 42. Thermostatically controlled heating elements are disposed in a drum 54 (not shown) fixed on shaft 22 within drum D. A driving wheel 58 and stopping wheel 60 on shaft 22 rotate as a unit with drum D and drive the latter step by step. When solenoid 102 is actuated armature 104 rises and through 106, 110, 112, 114 raises block 96 secured to piston rod 98 of dashpot 100, so that bell crank 90 is rotated. Pin 80 then disengages pawl 72 from the stopping wheel 60, and segment 82 rotates segment 66 clockwise, re-energizing spring 88. Engagement of cam 116 with adjustable screw 118 swings the rising latch 110 out of engagement with block 96. Spring 88 then moves segment 66 counter-clockwise so that pawl 68 drives wheel 58 and drum D through one-eighth of a revolution, the movement being regulated by adjustment of dash pot 100. Pawl 72 and armature 104 are returned by springs. The heat retaining wall W has an opening at the top, four spaced fixed sheet metal wall panels 128, and six pivoted closure members 130 at the gaps between panels 128. When panels 130 are closed the wall is open at the top only, permitting unloading and loading, but they may be opened by hand operated linkages, to cause a draught of cool air when work is interrupted. Members 130 are latched in their open positions, but the latch is released and the members closed by rotation of drum D. The machine may be used in conjunction with a twostation sole-attaching press, and the levers at the two stations of the press caused to operate switches which actuate the solenoid. Alternatively the solenoid switch may be arranged elsewhere, e.g. on the heating apparatus itself, or the solenoid may be dispensed with and spring 88 reenergized by physical effort, e.g. by means of a treadle. Specification 817,532 is referred to.