Patent GB-190918445-A (GB)
Title: Improvements in or relating to Machines for Preparing Welted Boots and Shoes for the Sole-laying Operation.
Inventor: BOULT ALFRED JULIUS
IPC: A43D47/00
Filed: 1909-08-10
Granted: 1910-09-12
Abstract: 18,445. Boult, A. J., [United Shoe Machinery Co.]. Aug. 10. Welts, machines for ; trimming.-A machine for preparing lasted and welted boots for the sole-laying operation comprises devices properly to locate the welt relatively to the insole, cutters to butt the two welt ends uniformily relatively to each other with a bevelled cut substantially coincident with the breast line, a tacker to secure the located and butted ends of the welt to the insole, devices to clean away any inseam stitches, and means to remove any protuberances on the heel seat. The various devices are controlled by cams on a shaft 6, Fig 2, which is driven from the main shaft 2. The devices to locate the welt comprise angularly adjustable locators 30, Figs. 12 and 13, mounted on swinging arms L, L<1>, Fig. 2, which are actuated in such a way that they move inwards until the locators engage the counter of a shoe supported and positioned on a stand 12, and then inwards until the locators pass over the rounded part of the last adjacent to the heel, and engage the welt on its underside. Each locator is formed with a welt-supporting and stitch-engaging blade 29, Fig. 12, and a cut-away portion 31, which, in the continued inward movement of its supporting-arm, enables the locator to be forced into the welt crease until the blade 29 engages the inseam. The locators then tighten and stretch the upper at the ends of the inseam, and move the welt ends inwards over the insole and into the path of movement of the welt-butting cutters 130. These cutters are mounted in carriers H, H<1>, and are controlled in such a way - * that they first move downwards until their cutting-edges are in the plane of the central portion of the blades 29, and then inwards to sever the welt, which at this time lies at an angle to the line of travel of the cutters, so that the ends of the welt are severed on the bevel; the amount of bevel depends upon the initial angular adjustment of the locators 30. To provide for a clean cut, each cutter is adapted to co-operate with a cutting-block 152 mounted in a carrier 150, Fig. 17. The inner edge 168 of this block is sharpened to enable it to serve as the means for severing any inseam stitches which extend beyond the point where it is desired to butt the welt. After the welt has been severed, the cutters 130 continue to advance so as to level the heel seat by cutting off any protuberances, such as the rear ends of the channel flap. Each cutter-carrier has co-operating with it a mechanism for supplying and delivering ticks to throat plates mounted on carriers 210. These plates are removed from their position under drivers 92 while the cutters 130 are operative, but assume this position, which is accurately determined so that the tacks will be inserted through that portion of the welt that has just been operated upon by the cutters, as the cutters move backwards. The tack-drivers 92 are both.actuated from a single hammer D. In some cases, a welt-guiding and welt-pressing attachment is provided to act upon and smooth out the welt in advance of the welt-butting cutters.