Patent GB-412599-A (GB)
Title: Improvements in or relating to the heeling of boots or shoes
IPC: A43D87/00
Filed: 1932-10-01
Abstract: 412,599. Shoe making. BRITISH UNITED SHOE MACHINERY CO., Ltd., BATES, A., BARCLAY, W. R., HAZELTON, G., JAMES, C. H., and BACON, W. I., Union Works, Belgrave Road, Leicester. Oct. 1, 1932, Nos. 27289/32, 35636/32, and 18703/33. [Classes 17 (i) and 17 (ii).] Heels.-Relates to shoes having heels built up of superposed lifts which heels are shaped to final form around their side and rear surfaces before they are attached to the shoes, and consists in methods of making wherein the heels are first trimmed to a predetermined shape under templet control, then, if desired, scoured under templet control to ensure retention of the shape to which they have been trimmed, and, finally attached. The soles do not extend to the rear end of the heels, and the rear end of the sole and the attaching face of the heel are shaped to complementary form only lengthwise of the shoe, the wings of the rear end of the sole being trimmed flush with the sides of the heel after attachment. To shape the attaching face of the heel, a cutting tool is used which operates simultaneously across the whole width of the heel and forms a ledge adapted to support the heel end of the sole extending across the full width of the heel and located below the general plane of the periphery of the attaching face of the heel. The heel is first built up and compressed, the dies being shaped to form a flattened peripheral rim at the attaching face and a recess at a predetermined position in this face to facilitate positioning in the trimming and scouring machines. The heel is then trimmed in a machine such as that described in Specification 411,448 and scoured in a machine such as that described in Specification 411,143, [Group XXIII]. The attaching face may then be shaped to conform with the bevelled end of a sole in a machine comprising a driven cutter 1035 shaped as a frustum of a cone and positioned adjacent to a work-supporting plate 1037, inclined at some 16‹ to the perpendicular to the axis of the cutter. The plate is adjustable towards or away from the cutter by an adjusting screw 1045, substantially in the line of the axis of the cutter by a screw 1053, and is clamped in adjusted angular position by a bolt 1057. A pair of fingers 1061, 1063 have hooked ends for engaging the breast edges of a heel and are mounted on stems 1065, 1067, respectively, formed with rack teeth engaging a pinion 1069, so that the fingers move simultaneously inwards towards each other or outwards. To adjust the distance apart of the fingers, the ends of the stem 1065 are screw-threaded and provided with nuts 1071, 1073, the latter backed by a spring. A fibre block 1079 engages the work adjacent the cutter. The fingers are bevelled to grip the heel and ensure it being withdrawn laterally from the cutter when the cut has been made. Alternatively, the heel and the rear end of the sole may have their engaging parts shaped to complementary form. The heel end of the sole is shaped to correspond with the cut made by the knife 1035, but left wider than the heel. The projecting wings are reduced flush with the side surfaces of the heel after attachment, the machine described in Specification 181,099 being suitable. If the uppermost lift of the heel should be of board instead of leather, it is preferable to harden the edge surface, after attachment, by the pressure of a smooth-surfaced roller. In another modification, the uppermost lift of the heel may be skived before the heel is built to agree with a skive of some #-inch width at the rear end of the sole. Specifications 181,099, [Class 17 (i)], 278,976, 305,276, [both in Class 17 (ii)], 306,192, 310,822, 331,934, 339,935, [all in Class 17 (i)], 398,845, and 408,210 also are referred to.