Patent GB-190824841-A (GB)
Title: Improvements in or relating to Lasting or like Machines.
Inventor: BOULT ALFRED JULIUS
Filed: 1908-11-18
Granted: 1910-01-18
Abstract: 24,841. Boult, A. J., [United Shoe Machinery Co.]. Nov. 18. Lasting. - Lasting- machines, particularly those of the type described in Specification No. 14,453, A.D. 1897, are provided with improved wiping-means for working the upper into lasted position and securing it there. The invention is particularly useful for welt and turn shoe work, in which the upper is lasted up to a lip or shoulder on the insole. The wiper 60, Figs. 1 and 2, is preferably in the form of a V-shaped member, the legs of which are pivoted respectively to a slide 64 and an actuating- bar 66. The wiper is moved into operative position against the action of springs 68 by a combined endlong movement of the slide 64 and bar 66, which are actuated through a cam-slide 66<x> by connexions 70 from a rock-shaft 50; this shaft is controlled by a knee lever 52. The bar 66 is moved endways while the wiper is in operative position, by adjustable connexions 75, 76 actuated by the cam-block 2, which may be shaped to reciprocate the bar one or more times during each cycle of the machine. The rod 75 and bar 66 are arranged so that they engage or break connexion with each other simultaneously with the movement of the wiper into and out of operative position. The wiper has a long acting- face, as shown in Fig. 3, of which, when the wiper is in operative position, the end 90 is continuously in contact with the shoe. When the wiper is in the position shown in dotted lines in Fig. 3, the portion of the upper opposite about the centre of the wiper is being subjected to the action of the lasting- pincers. During or after the lateral swinging movement of the pincers, the wiper moves into the position shown in full lines in Fig. 3, the end 90 moving along the shoe edge with a longitudinal rubbing action, while the other end 91 swings inwards in a direction approximately transverse to the shoe edge to complete the lasting of that portion of the upper which has just been treated by the pincers, and also to wipe into position a portion of the upper in advance of the pincers. As a result, a less number of pulls is required as compared with prior machines. The movements of the wiper also seat the binder w, which is usually used in welt and turn shoe work, securely in position to hold the upper in the angle between the feather and shoulder of the insole. The binder is subjected to a heavy tension during the toe-lasting operation, and a less tension after the completion of the operation, to permit it to be reeled off freely and wound around the anchor tacks. For this purpose, the tension device is operatively connected to the wiper-actuating mechanism. The cam slide 66<x> carries a stud 102, Fig. 2, located in a groove in a block 104 on the rear end of a shaft 105, which carries the wire supporter 95. This shaft has adjustable collars 106, between which is located a block 108 adjustably mounted on a swinging plate 110, which turns about a stud 112. The wire passes between a disk 115 and a plate 110, which is pressed downwards by a spring 114, Fig. 1. Both plate and disk are provided with co-operating inclined faces 116 arranged so that the plate 110 rides away from the disk to release the wire when the wiper is retracted, but rides down the incline to permit the spring 114 to apply tension to the wire when the wiper is moved into operative position. In order that the knee lever 52 may be moved to render operative the means for imparting plaiting movements to the grippers without actuating the wiper and wire supplying mechanisms, a detachable connexion is provided between the shaft 50 and the arm 70, Fig. 1. This comprises a collar 125 secured to the shaft and carrying a spring plunger 126, which is adapted to engage a recess in the arm 70. The plunger is controlled by an operating- bar 128.