Patent GB-408940-A (GB)
Title: Improvements in or relating to automatic machines for operating upon boots or shoes
IPC: A43D95/20
Filed: 1932-10-17
Abstract: 408,940. Boot-marking machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., NOWN, H. V., and HARRINGTON, A., Belgrave Road, Leicester. Oct. 17, 1932, No. 28913. [Class 17 (i).] Edge-setting.-Relates to machines of the kind described in Specifications 14696/08, [Class 17], and 22503 /09, [Class 17 (i)], modified as described in Specifications 246,213, 309,054, [both in Class 17 (i)], and 385,303 wherein the work held by a jack and a tool operating on the marginal portion of the sole are automatically moved relatively to transfer the point of operation round the sole, during which movement their relative aspect is automatically varied in accordance with the shape of the sole margin by mechanism controlled by feelers, and consists in the provision, on the tool and feeler carrying head, of an abutment adapted to contact with the tread face near its margin, but preferably, spaced back from its edge. The tool is mounted for bodily vertical movement with respect to the head, but means are provided for preventing this vertical movement when desired. As described in the prior Specifications, the edgesetting iron 1 can turn freely in a vertical plane about projections from a holder 3 having a shank 5 slidable in the cross member of a T-piece 7 the upwardly extending stem, of which is fulcrummed in a bore in a vertical extension 9 of a sleeve 11 rotatably mounted in a bearing frame 13 itself carried by a lever arrangement permitted vertical movement, the frame 13 being supported by a strut connected to an arm urged upwardly by an adjustable spring. The usual sole edge and tread engaging feelers 21, 23 are supported by blocks 19 on the sleeve 11. To prevent the edge of the sole being curled upwardly, the blocks 19 each carry one end of a U-shaped member 25 formed with a projection 27 positioned between the feelers 23. A stop screw 31 holds the member against downward displacement. The stem 7 is supported by springs 39 connecting a collar 41 on the stem with a screw 35 engaging a bracket 33 in fixed relation with the sleeve 9. The hand lever attached to the head 13 for guiding the iron to position at the beginning of an operation is provided with a supplementary lever attached by a Bowden cable 47 to the iron oscillating shaft 53 described in the prior Specifications. The iron may be roughly positioned by a handle and then depressed against the springs 39 to exact position by a lever. If desired, the free vertical relative movement of the tool and head may be prevented. To enable this to be done, a bush 57 located for vertical sliding movement in the extension 9 is formed at its upper end with an inclined cam surface 59 engaged by a projection 71 on a collar 69 provided with a pin 73 forming a handle engaging an inclined slot in a flange 63 at the upper end of a sleeve 61 secured in the extension 9. On turning the collar by the handle 73, the assembly is expanded so that the collar 69 and lower end of the bush 57 contact respectively with the collar 41 and the cross member of the T-piece 7. Specification 29220 /13, [Class 17 (i)], also is referred to.