Patent GB-191501725-A (GB)
Title: Improvements in or relating to Apparatus for Indicating the Location of the Ends of the Inseam in the Manufacture of Welt Boots and Shoes.
IPC: A43D63/00
Filed: 1915-02-03
Abstract: 1725. British United Shoe Machinery Co., [United Shoe Machinery Co.]. Feb. 3. Lasting; preparing lasted boots for sewing.- An apparatus for use in the manufacture of welt boots or shoes, such as a bed-lasting machine, is provided with means for supporting the upper and counter in conformed condition on a last, and with means for producing on the upper, counter, or both, at a predetermined distance from the heel end, a definite mark to indicate the position of the ends of the inseam. The mark may take the form of a slit, in which case it also facilitates the formation of the ends of the inseam, since it enables the channel guide of the welt sewing-on machine to be introduced into and removed from the channel close against the foremost heel-seat tacks. The invention is described as applied to a bed-lasting machine of the kind disclosed in Specification 22,630/08, the marks being formed by slitting-knives automatically actuated during the lasting of the heel seat; additional lasting-devices are also provided to bed the upper materials into the angle of the insole lip in advance of the slits. The knives 54 are carried by spring-pressed levers 50 pivoted in carriers 49, which are themselves pivoted at 48 to slide blocks 46 at the front ends of levers 45 ; these levers are fulcrumed on the head 4 and carry on their other ends studs which engage cam-slots 42<a> in slides 42 connected to rearward extensions 40 of the heel-band closing bars 10. The levers 50 have humps over which stand the broad ends of levers 55, which carry rolls 58 adapted to he actuated by cam-plates 60 on a cross-bar 62. This bar is guided for movement in the head 4 by a plunger 65 connected to the wiper-operating lever 25. For the purpose of adjusting the position of the knives, the carriers 49 are connected through slots 70<a> with links 70,'which have a slotted connexion with the pivots of the levers 55, and are connected to arms 73 on a rockshaft 74 operable by a hand-lever 75; the handle is locked by a pawl 78 engaging a notched segment 76, which may carry size marks. When the bars 10 are moved forward to close the heel-band, the blocks 46 and knife-carriers 49 are moved inwards to position the knives-in accordance with the width of the shoe, and preferably at a location such that the cuts will slit the heel stiffener flange but will have their outer ends at a substantial distance inside the edge of the shoe bottom. When, later, the lever 25 is actuated, the cams 60 cause the levers 55 to depress the knife levers 50 momentarily to make a slit inside the wipers, after which the levers 50 are returned by their springs to their normal positions well above the shoe bottom. In the reverse movement of the lever 25, the cutters are again momentarily actuated. To assist further in the formation of the ends of the inseam, the machine is provided with lasting- fingers 35 pivoted to the front ends of the wipers 16 and carrying studs 34, which engage slots 32 in plates 30 attached to the upper face of the heelband at its ends. During the closing of the heelband, the fingers 35 are positioned relatively to the edge of the shoe, and when the wipers advance, the fingers are moved to exert a forward rub on the upper in advance of the cuts, to bed the upper and stiffener flange well down into the angle between the lip and feather of the insole, Fig. 4. Specification 14,776/12 also is referred to.