Patent GB-717173-A (GB)
Title: Improvements relating to the manufacture of shoes
IPC: A43D95/14
Filed: 1952-01-17
Abstract: 717,173. Embossing shoe parts. ATLASUNION SHOE CO., Ltd., ATLAS, A., and TORRY, L. Jan. 19, 1953 [Jan. 17, 1952], No. 1377/52. Class 100 (2). [Also in Group VII] The face of a shoe insole is marked by gripping the insole, or the bottom stock from which it is to be cut, between two parts, one of which is provided with inserts or embossments so shaped as to produce the desired markings. In the method described a pair of insoles are marked simultaneously by being clamped between a pair of embossing surfaces, Fig. 1, having simi'ar but reversed marking elements. Line marking is effected by the exposed edges of brass strip or the like partly driven into a backing block 5, 5<SP>1</SP> as shown in Fig. 3. The insoles marked by the embossing surfaces illustrated are for shoes to be made upon lasts having metal bottoms formed with apertures through which tacks may be passed into the wood of the last for securing the insoles to the last. The markings therefore include circles 6 corresponding exactly to the openings in the metal bottom of the last. Other markings are made bv figure and letter forms 9, 10, e.g. signifying the size of the shoe. The position for the attachment of shank stiffeners is indicated by lines formed by embossing elements 16, 17, 19, 20 and the position of the heel block by suitably bent members 21. Pins 26 indicate the position for the stiffener securing screw and pins 27 show where tacks may be inserted for securing a reinforcing piece for the heel. In the application described the blocks 5, 5' carrying the embossing strip elements are attached to rounding blocks 1, 11, the edges of which are adapted to guide the cutting-out knife in a rounding machine, Fig. 5. The upper and lower rounding blocks are attached respectively to a vertically displaceable presser foot 3, actuated by a treadle, and to a fixed part 29. Two pieces of leather from which the insoles are to be cut are placed between the rounding blocks and gripped whi e the knife cuts out the insoles the periphery of which is identical to that of the lower rounding block which is slightly larger than the upper b'ock. The embossing surfaces may be inked to make the marking more definite by means of an inking pad 34 swingable by a handle 47 into a position between the embossing surfaces, a light pressure on the treadle then causing both surfaces to be inked. The pad is held in a frame 33 gripped by a bracket 35 mounted on a rod 36 fixed within a tube 37 welded to an arm 38. Arm 38 is attached to a sleeve 39 carrying a depending rod 40. Rod 40 is received in a vertical tubular bearing 41 attached to a bracket member 42 adjustably screwed to the frame of a machine. Cam formations on the interengaging surfaces of the sleeve 39 and bearing 41 cause the inking pad to fall as it swings to the operative position (shown) so as to contact the lower embossing surface. A spring 48 keeps the cam surfaces in contact and causes the arm 38 to swing to the inoperative position, when released. The embossing elements may be embedded directly in the rounding block or formed on a thin metallic carrier, e.g. of skeleton form, attached to the rounding block.