Patent GB-151716-A (GB)
Title: Improvements in or relating to shaping machines for boot or shoe uppers or parts thereof
IPC: A43D8/00
Filed: 1919-06-26
Abstract: 151,716. Bates, A., and British United Shoe Machinery Co., (United Shoe Machinery Corporation). June 26, 1919. Uppers and stiffeners, machines for. - A machine for moulding the upper, lining, and stiffener of a shoe in assembled relation, or the stiffener alone, such. for example, for the purposes of processes described in Specification 131,394, [Class 17 (ii), Boots and shoes, Construction of], is provided with marginholding means to confine the margin of the upper against the flange-forming wipers as they advance over the shoe form, so as to prevent the formation of large pleats in the wiped-over upper. The machanism is also arranged to mould the upper to a shoe-end form to produce a flange upstanding at a definite angle to the tread face of the form and located at a predetermined distance inwardly from the edge of the tread face; stops may be arranged to limit the movement of the margin. holding means so that a second flange will be formed on the margin of the material at an angle to the first flange. The invention is described as applied to a heel-end moulding machine of the type described in Specification 23685/12, in which a heel form.2 carries the work backwards into a a mould (not shown), which is then closed to clamp , the upper about the form, after which wipers comprising advancing and closing end members and side members having a closing movement only operate to form the flange ; the machine is further provided with means to impart to the wipers repeated rubbing movements over the flange, as described in Specification 108,533. According to the present invention, the form 2 is formed with a dovetailed slideway for a foot-piece 40, in which is guided a stem 42 carrying a head having secured to it links 44 pivotally connected to margin-holding members 45; these members are shaped substantially to the curvature of the rear end of the form 2 and are normally outspread by leaf springs 46. An adjustable stop 60 on a block 61, and an adjustable stop 62 limit the forward movements of the foot piece and the stem respectively, while their heelward movements are limited by the end of the slideway and by shoulders 64 on the members 45. The members 45 are maintained in the position shown in Fig. 1 by a presser 50 acting on the end of the stem 42, which projects through a slot in the block 61; the presser forms one arm of a bell crank, the other arm 52 of which is pressed down by a spring 54 and carries a spring-pressed pin 55 adapted to engage a ratchet segment 56 fixed to the machine frame. In this position of the members they serve as a height gauge for the work. The members are moved backwards with the form into the mould, and, as the wipers advance, the members yieldingly pinch the upper against the wipers so that the tendency to form folds or pleats is overcome. The members are prevented from following the wipers on their return movement by the lock 55, 56. If it is desired to form a second flange on the margin of the upper, the stops 60, 62 are adjusted to limit the forward and closing movements of the members; in such an event, to avoid the tendency of the wipers.to tip the upper about the rear end face of the form 2, members 45 are preferably used which extend substantially further forward from the heel end along the top of the form than those shown in the drawings.