Patent GB-190918163-A (GB)
Title: Improvements in Machines for Pulling-over and Lasting Uppers of Boots and Shoes.
Inventor: BROTHERS ELI
IPC: A43D21/12
Filed: 1909-08-07
Granted: 1910-08-04
Abstract: 18,163. Brothers, E. Aug. 7, 1908, [Convention date.]. Lasting.-The toe part of an upper is pulled over and lasted in one operation by means of a curved sectional gripper. The shoe is supported vertically, and in full view of the operator, on a rest 6, Fig. 1, adjustable towards and away from the machine on a block 5, which is transversely movable in a vertically-adjustable slide 2. The sole rests against an adjustable abutment 30, Fig. 3 supported by parallel links 32, one of which is rigidly secured to a rock-shaft 34. This shaft is actuated through links 35, 36, Fig. 1, by a handlever 38. The gripper comprises a verticallymovable sectional jaw 10, Figs. 1 and 3, formed with a corrugated gripping-face inclined upwardly and outwardly, as shown, and a co-operating jaw 15 connected by a pivoted link and universal joint to a cross-head 16 on a plunger 18, which is actuated from a treadle 24. These jaws are curved approximately to the shape of the toe portion of a shoe, and, in their open position, they are adapted to engage the upper in the outwardly flared condition in which it is assembled loosely over the last. After the upper is engaged by the gripper, it is properly positioned by adjusting the rest 6, and then it is stretched over the last, by movement of - the abutment 30, in a direction obliquely out from the side faces of the last. To wipe the stretched upper into lasted position, the jaw 10 is formed with a wiping-face, or is fitted with a removable plate 11, Fig. 5, and the sections of the jaw are connected by bolts 52 extending through elongated, slots to a forked plate 50, which is actuated by a rack and pinion controlled by a band-lever 55. The jaw sections are connected together by a link 40, and are provided with curved slots 42 to receive studs 44 on the head of the machine, so that, as the jaws are moved downwards, they also swing inwards to bend the upper over the edge of the last. A toe clamp 60, Figs, 3 and 5, may be employed to force the last against the wiping-faces of the jaw, and, preferably, yielding side clamps 62, Fig. 5, are provided to engage the lasted upper at its ball portion. The tacking-devices comprise an open framework 72, Fig. 3, having a shank portion 70 , slidably connected by a ball and socket to the head . of the machine, and formed with guides for the driver head 74 and drivers 75. The forward end of this frame carries nozzles 76, which are yieldingly held in grooves in the inner face of the jaw 15, as shown in Fig. 5. In this way, the tacking-devices are automatically adjusted with the jaws to the width of shoe being operated upon. The operation of the tacking-mechanisms, to which tacks are supplied by devices such as are described in the concurrent Specification 18,270/09, is effected by springs 79 and a toggle 81, actuated by a treadle 80, Fig. 1. The frame 72 moves forwards until the nozzles engage the shoe, and then the tacks are driven. To ensure that the marginal portion of the upper will be engaged by the tacks, pushers 85, Fig. 5, yieldingly supported on brackets extending from the jaw 10, are adapted to be projected through, the jaw adjacent to the tackers. The jaw may be provided with a groove in its edge between the gripping and wiping faces to receive a binder, and carry it round the toe of the shoe. After the tacks are driven, the operator bends the ends of the binder round the tacks to fasten it.