Patent GB-191413968-A (GB)
Title: Improvements in or relating to Machines for Conforming Uppers to Lasts.
Inventor: WADE HAROLD
IPC: A43D21/02
Filed: 1913-03-17
Granted: 1914-06-17
Abstract: 13,968. Wade, H., [United Shoe Machinery Co.]. March 17, 1910. Lasting. - Pincer-lasting machines, for example, of the type described in Specification 14,453/97, are arranged so that the power mechanism of the machine is utilized to advance the wiper into operative position, and to adjust the pincers to pleat, this mechanism being rendered operative by a controlling-device which is adapted to be set by the operator. The kneelever 186 of the pleating-mechanism supports a push-rod 185, which acts against a lever 184 fulcrumed on the usual rock - shaft 180. The lever 184 acts through a link 182 on an arm of a rock-shaft 176, which is journaled in an arm 178, and carries a crosshead from which rise two pins 174, 175; these pins are adapted to pass through a cam - plate 165, which actuates the wiper-carriers 162, 163. When the push-rod 185 is moved, the pin 175 is thrust into the path of a wedge 172 on a vibrating lever 170, which is actuated from the driving-shaft 54. At the proper time in the cycle of operations of the machine, the wedge engages the pin 175 and thus shifts the cam-plate 165 so that it actuates the wiper-carriers in the known manner. The push-rod 185 is retained in position by a catch, which is released by a slight lateral pressure to allow a spring 181 to effect the return movement of the shaft 176, causing the pin 175 to be withdrawn and the pin 174 to be raised into a position to be engaged by the wedge 172; this results in the wiper and its carriers being retracted into inoperative position. The pincers may be adjusted for pleating to the right or left, and the pleating-mechanism may be rendered operative independently of the wiper mechanism through the shaft 180 by means of the knee-lever 186 in the known manner; but these operations ma.y be accomplished through the power mechanism by making the arm 178 fast to the shaft 180 by means of a retractible pin 179. The lever 170 is also made to oscillate the wiper 160, for which purpose an adjustable stud 206 projects from the lever into a groove 204 in an upstanding-arm 202 of a block 200, which is secured to a plunger 198 connected to the carrier 163. The block 200 has a rib 208 yieldingly held by a spring 205 against a projection 210 from the cam-plate 165. When the plate 165 is advanced, the spring 205 effects engagement of the arm 202 with the stud 176, and the wiper is oscillated. The power mechanism is also arranged automatically to stop the delivery of tacks when the wiper is operated, for which purpose, a spring-controlled rod 133 is arranged in the path of movement of the camplate 165, and is arranged at its front end to operate a latch 130, which engages and stops the tack separator. In a modified construction, the wedge 172 co-operates with another wedge on an arm extending from a sleeve surrounding the shaft 180; a second arm of this sleeve has a V-shaped notch, either wall of which can be engaged by the push-rod 185. The first arm has screws located to engage a swinging bar mounted on the shaft 180 and connected to the cam-plate 165. The swinging bar is also connected by a link with a plunger, which is actuated through a cam-operated lever from the main shaft. The link puts the plunger into engagement with a. shoulder on the wiper-carrier 163 to oscillate the wiper. The plate 165 is connected by a pin or slot with a binding- wire guide and tension device, as described in Specification 24,841/08, so that these devices are also actuated by the lever 170 when the push-rod 185 is moved.