Patent GB-749660-A (GB)
Title: Improvements in or relating to machines suitable for use in the manufacture of shoes
IPC: A43D23/00
Filed: 1953-10-19
Abstract: <PICT:0749660/III/1> <PICT:0749660/III/2> <PICT:0749660/III/3> A machine comprises a member against which a portion of a shoe part is turned during a folding operation the member having a passage for the application of cement to the shoe part, means for intermittently feeding the shoe part to present successive parts to the folding instruments, means for extruding cement in time relation and operator controlled means for regulating the amount of cement adjustable during the operation of the machine.  A base 10 forming an oil reservoir has a laterally extending arm 14 with a removable end supporting work plate 18, an upper part 19 has a neck 20 with a removable head 22.  The arm 14 carries a plough block 24 for deflecting the margin to be folded the amount being determined by a gauge finger.  The work is folded by a folding finger 30 against the creaser foot 32.  The work is gripped by a gripping member 34 and the folded portion is pressed against the creaser foot by a hammer and anvil 36, 38.  A snipping knife 40 moves between the plough block and folding finger 30 to snip the margin of the work.  The work is folded and fed in step by step manner substantially as described in Specification 544,010.  The folding finger 30 is mounted on an arm 64 pivoted on a stud 66 the arm has a slotted pin which engages a crankpin 68 on the main drive shaft 42.  The stud 66 is adjustably mounted in a bushing having an arm 71 an detent 72.  The gripping member 34 is mounted on a rockshaft 48 which has mounted a release arm with a cam follower which contacts a cam on the shaft 42 to rock the shaft 48.  The shaft 48 may be manually rocked.  The anvil 38 is mounted on an arm 82 clamped to a shaft 80.  The hammer 36 is mounted on an arm 94 pivoted to the arm 82 whereby the hammer and anvil move together.  To cause the hammer to move towards the anvil the arm 94 is mounted on a rod 102 within the shaft 80.  Rod 102 is connected by links 142, 140 lever 136 pitman 134 to a sheave 132 on the shaft 42. A sheave 152 on the shaft 42 has an arm 153 connected through linkage to the shaft 80.  One link 164 is mounted on a pivot 170 which also carries an arm 172 connected to the feed control shaft 174.  An arm 180 is connected to the shaft 174 and is movable between stops 186, 190 to limit the movement of the feed control shaft.  The cement is applied from a receptacle 312, integral with a tube 241.  A frusto conical cup 314 within the receptacle is positioned by a rim 316 and has a helical groove with a heating element 320.  At the bottom a gear pump 324 indirectly driven by a gear 338 feeds to an outlet 330 opening to the tube 240.  The cup has a rotatable scraper device which comprises a pair of blades contacting the side walls of the cup and an upper rim with a gear meshing with a gear on a vertical shaft driven from the shaft of the pump gear.  The drive for the cement pump is actuated by an eccentric 420 on the shaft 42 which imparts oscillation to a forked lever 422 having an arm pivotally connected to links 426, 428 on a pivot 460 and connected to a lever 430 rotatable on a sleeve on a rod 340.  The sleeve is connected to the lever 430 by a pivoted latch 440 on a lever 438 gripping the sleeve. The latch may be operated manually or by a rod 450 depressed by a solenoid actuated arm.  The rate of feed of cement is changed by altering the position of the pivot 460.  The position of the pivot is altered if the feed control shaft 174 is rotated.  The shaft is connected by levers 474, 478, link 472, sleeve 484 on a rod 170, arm 466 secured to the rod to a twin lever 462 connected to the pivot 460.  The rod 470 can be independently rotated to change the pivot 460 and is held in position by a notched segment which engages a spring pressed latch secured to the sleeve.  The oscillations of the sheave are imparted to the gear 338 through a one way clutch.  The head 22 comprises a casting with a side plate 200 and web 202 with a vertical part 206.  The gauge finger 28 is connected to a finger piece 214 mounted on a pivot 212 on member 208 depending from the web 202 which also carries a knife 40 adjustably secured by a screw 218 to a bell crank lever connected to a rod 232.  The creaser foot 32 is adjustably connected by screws to the tube 240 having a passage 241 connecting receptacle 312 to a passage in the crease foot.  The tube is movably supported on a plate 242 which is adjustably supported in the head by screws to allow the lateral position of the plate to be adjusted.  To alter its lengthwise position a groove in the base of the plate receives a cylindrical pivot eccentrically mounted on a pin secured in the side plate 200 and plate 206.  The plate has an extension for pivot 261 on link 262 with a screw connection to a hump on tube 240.  The plate has spaced lugs for a tiltable mounting coupling shaft 272 with forked arms pivoted on pin 276 passing through lugs 278 in the tube.  Movement is imparted to the creaser foot upwardly by depressing finger piece 280 connected to an arm having rollers below link 262 the movement being against the action of a compression spring 288.  The creaser foot has a hollow extension for a heater unit 304 and within the tube 241 is a heating unit 306. For oscillating the snipping knife the rod 232 is connected to a rod 360 and an arm 370 mounted to rock on a screw and having an extension with a mounting for a pivoted catch spring urged downwardly to pass between lugs on a arm 384 mounted on a pin 386 connected to a pitman 394 and sheave 392 surrounding an eccentric on the shaft 42.  Latch 378 is moved upwardly by a lever 399 pivoted at 402 assisted by a spring pressed plunger 406.  To lower the latch a rod 410 is operated and the shaft 360 is rocked to operate the snipping knife.  In operation after filling the container 312 with cement the heat units for the container and tube 241 are switched on.  A piece of work is inserted by depressing finger pieces 214, 280 to lift the gauge finger and creaser foot.  The work is moved against the plough block and the drive to the main shaft 42 started.  A treadle on the rod 182 is depressed to increase the rate of feed and the amount of cement. The latch 488 may be adjusted to increase cement feed. Specifications 544,010 and 547,294 [Group VIII] are referred to.