Patent GB-366122-A (GB)
Title: Improvements in or relating to shoe-bottom pressing means
IPC: A43D25/06
Filed: 1930-10-30
Abstract: 366,122. Boot-making machines. UNITED SHOE MACHINERY CORPORATION, 140, Federal Street, Boston, U.S.A.- (Assignees of Finn, S. J. ; Beverly, Massachusetts, U.S.A.) Oct. 30, 1930, No. 32565. Convention date, Dec. 16, 1929. [Class 17 (i).] Sole-laying.-Relates to machines of the kind described in Specifications 339,739, [Class 17 (i), Boots and shoes, Apparatus for making &c.], and 363,623, and consists in improved means for positioning shoes and shoe bottom parts, such as soles, relatively to each other prior to a shoe-bottom pressing operation, such as attaching soles to shoes by cement. Two pairs of feelers are provided, one pair " finding " the sole and, if necessary, swinging the second pair into symmetry with the first, the second pair then positioning the shoe end relatively to the sole. A bracket 112, Fig. 6, is pivoted at 116 to the frame of the machine and supported by an adjustable strut 118. The bracket has horizontal tracks 122 with depressed portions at their left-hand ends, a carriage 126, Fig. 8, having supporting rolls 128 engaging these tracks, the rolls being kept down by coverplates. A slot 132 in the carriage guides a slide block 134, Fig. 9, provided with a slot 136 engaging the axle of the right-hand rolls. To the slide block is secured a cable passing over a pulley at the end of the bracket and a pulley 146, Fig. 6, and secured to a treadle provided with a latch and spring as described in the later prior Specification. To the same axle is secured a cable 154 passing over a pulley 156 and to a weight urging the carriage to operative position. A pair of sole-engaging feelers 164 and a pair of shoe-positioning feelers 166 are pivoted at 160, 162, Fig. 8, to the car. riage, their right-hand ends being covered by a plate 170, Fig. 6. The carriage carries a slide 174, Fig. 12, urged to the left by a spring secured to a pin 178 engaging a slot 179, Fig. 8, in the carriage. A hole 200, Fig. 12, in the slide engages over a pin 198, Fig. 9, mounted. on the slide block 134, inclined grooves 190 engage rolls at the right-hand ends of the feelers 164, and a pin 182 engages a slide block in a slot 186 in a second slide member 188, Fig. 13, formed with inclined grooves 194 engaging rolls at the inner ends of the shoepositioning feelers 166. A slot 202 in the slide 188 engages the pin 198. The portion of this pin engaging the slide 174 is eccentric, so that the sole feelers may be adjusted relatively to the shoe-positioning feelers. The slot 179 is narrow at its right-hand end to centralize the sole feelers as these are retracted to inoperative position. To determine the point at which the sole feelers engage the sole, a gauge member 216, Figs. 3 and 6, is adjustable on a feeler member 214 guided by a bridge-piece and rolls on the cover-plate 170. The rear end of the member 214 is engaged by a lever 248 formed with a recess to engage a latch block on a lever 228 carrying a tooth 234, all these parts being carried by the cover-plate 170. The bracket 112 carries a cam surface 236 and a ratchet 258 at the extremes of travel of the tooth 234. For moving the shoe-positioning feelers 166 to position the counter portion of a shoe, a slot 274, Fig. 13, in the slide 188 is engaged by a pin on one of the three arms of a lever 266, Fig. 3, urged clockwise by a spring 260. Normally, the lever 266 is prevented turning by a latch 276 engaging a block 278 secured to the lever, the latch being released, when desired, by a handle 282. The lever 266 carries a roll 296 co-operating a cam 294 to reset this mechanism as the slide 126 moves to inoperative position. The block 278 also engages a lever 304 urged counterclockwise by a spring and engaging a pin on the feeler 214, so that this member is retracted when the handle 282 is actuated. A hand-lever 318 is connected by a link with the pin 198 to withdraw the sole feelers before final pressure is applied. In operation, a sole is positioned on the pad and the treadle latch released, allowing the cable 154 to move the carriage 126 to the left. When the member 216 engages the sole or the operator's thumb held adjacent to the end of the sole, the tooth 234 stops further advance of the carriage. The slide 174, under the pull of the spring 176, continues to move to the left, closing the feelers 164 on the sole. The operator then roughly positions the shoe and depresses the handle 282, the feelers 166 closing to position the shoe symmetrically and the feeler 214 being retracted. The operator then applies preliminary pressure to the work as described in the prior Specifications, and swings the lever 318 to withdraw the sole feelers, so that these will not be caught beneath the sole when the final pressure is applied. When this is applied, the carriage is returned to inoperative position, the cams 236, 294 resetting the levers 228, 266.