Patent GB-190917548-A (GB)
Title: Improvements in or relating to Pulling-over or like Machines.
Inventor: MCFEELY RONALD FRANCIS
IPC: A43D13/00
Filed: 1909-07-28
Granted: 1910-07-28
Abstract: 17,548. McFeely, R. F. July 29, 1908, [Convention date]. Lasting &c.-Pulling-over and lasting machines of the type described in Specifications 9793/08, and 17,091/09, are provided with improved toe-grippers and toe-gripper actuating - mechanism, and with improved end-lasting mechanisms. The toe-gripper, which is adapted to engage the whole of the toe part of the upper, as shown in Fig. 4, consists of two sections each comprising a fixed jaw 20, Figs. 3 and 4, and a relatively-movable pivoted jaw 19. These sections are supported by carriers 18, formed at their ends into sleeves to receive rods 16 at the lower end of a bar 15, which is pivotally suspended from one end of a two-part actuating- lever controlled from the cam shaft of the machine. The closing of the jaws 19, 20 is effected by the relative movement between the carrier 18 and the bar 15 due to the action of a spring 28 surrounding a plunger 25, Fig. 3. The grippers are opened by the engagement of shoulders 30, Fig. 4, on the carriers 18 with rigidly-supported abutments, which force the end of the plunger 25 down on to the tailpiece of the jaw 19. The grippers can be raised manually by means of a bar 23 Fig. 3, which is actuated from a hand-lever on the front of the machine. The gripper jaws as a whole are normally positioned in a curve of longer radius than that of the toe of the last, and each section of the jaws can be independently adjusted to adapt the grippers to lasts having greater swing on the one side than on the other. For this purpose, the shoulders 30, Fig. 4, are adapted to engage positioning-devices 35, which can be angularly adjusted on plates 36. These devices determine the initial gripping position of the grippers, and also control their relation during the first part of the pulling-over operation. Afterwards, however, the shoulders 30 rise clear of the devices 35, and the gripper sections then adjust themselves to the contour of the last. A spring 48 normally spreads the gripper sections apart. The plates 36 can be moved lengthways of the last in guides 49, and transversely of the last by means of rack mechanism 45,46. In a modified construction, the positioning-devices are adjusted simultaneously instead of independently. In addition to their upward movement, the grippers are made to swing forwards to strain the upper forwardly and away from the last. To effect this, the rear-face of the gripper bar is provided with one or a pair of camsurfaces 60 adapted to engage a fixed roller 62. In the latter part of the movement of the grippers, the front portion 12, Fig. 6. of the gripper-bar supporting-lever is caused to move forwards by the engagement of inclined guideways 72 in a plate 70 carried by it with a stud 74 secured to the machine frame. The combined effect of this movement and the forward movement due to the cam-surfaces 60 is to cause the heel-ends of the gripper jaws to effect a final pull at the sides of the toe with relation to the upper at the end of the toe. This movement is of particular advantage when lasting shoes on lasts having a high part over the toe, as shown in Fig. 6. The machine is constructed for various adjustments, as described in the pulling-over machine described in Specification 7005/00. The end-lasting mechanism comprises wiper plates 80, Fig. 9, connected by an intermediate pivoted plate 82, as described in Specification 17,091/09. In the present machine, this intermediate plate is mounted for free sliding movement transversely of the last in a curved guide formed in the carrier 84. Specification 8736/10, is also referred to.