Patent GB-383855-A (GB)
Title: Improvements in or relating to automatic pounding-up machines for lasted shoes
IPC: A43D49/00
Filed: 1932-03-24
Abstract: 383,855. Boot-making machines. NOLLESCHE WERKE KOMM-GES., Weissenfels-on-Saale, Germany. March 24, 1932, No. 8799. Convention date, March 28, 1931. [Class 17 (i).] Pounding-up.-An automatic machine for pounding-up lasted shoes has a shoe support swung by a cam in the direction longitudinal of the shoe and turned half a revolution at the end of each traverse. A change-speed gear is provided, so that the rate of movement of the shoe may be varied. The pounding-up tools are automatically removed from the work while the instep is adjacent to the tools and at the end of the operation. Tools at the tread portion and at the side of the shoe are each urged against the work by springs. The shoe 68 is secured to a support 67 pivoted at 61 to a lever 59 pivoted at 60 to a rotatable member 52. The lever 59 is connected by a link 57 to a lever 54 carrying a roll 53 engaging a cam groove 49, the end of the link 57 being adjustable along the lever 59 for size of shoe. At its lower end, the support 67 is guided in a slot 66. The rotatable member 52 is secured to one member of a Maltese gear arranged to rotate the member 52 through half a revolution when the toe and heel are being operated on. The operating tools may comprise a side beater and a centrifugal seat beater, but, preferably, the seat beater comprises a hammer 181 sliding in a bearing 23 pivoted to blocks sliding in slots 34<1> and depressed by a spring 25. The hammer is actuated by an eccentric 221 also rocking a shaft 27 sliding through a pivoted bearing 26 and pivoted to a member 29 bored to receive the shank of a side beating hammer 19<1> which also slidably engages a pivoted bearing 31. Normally, each hammer describes an ellipse, both beating and wiping the work. This mechanism is housed in a casing 17 pivoted about the shaft 22 and urged'toward the work by a spring 41, a stop 45 functioning when no work is present, To position the seat hammer relatively to the work, a pivot 34 carried by the casing 17 supports two work-engaging rollers 32. The shaft 22 is carried by a lever 16, urged clockwise about a pivot 2 by a spring 36, and raised from the work at the instep and the end of the operation by a cam 14. The cam shaft 13 is driven by bevel gearing from a wheel 10 in opposite directions by a wheel 8 or 9, either of which may be clutched by a member 7 to a shaft 91 driven through change-speed gearing from a worm 3. This gearing also drives spur gearing rotating the cam 49 and the Maltese gearing for turning the work at the ends of its travel. The beating tools are driven by belts from the shaft 3 so that their speed is not varied by the change-speed gearing, nor is their direction reversed by the reversing gear. The cam shaft 13 also carries a cam 86 for reversing the direction of rotation of the work and stopping the traverse at the end of the operation. This cam actuates a slide 73 to which is pivoted a pawl 75 normally centralized by a spring 81 and co-operating with a member 77 pivoted at 78 and having a crank engaging the clutch member 7. The slide 73 is also connected to a treadle 70 for starting the machine. In operation, the cams being at right-angles to the position shown, the work is positioned and the treadle depressed. The pawl 75 causes the wheel 9 to rotate and drive the cam 49 which commences to traverse the work. As the instep leaves the line of the tools, the cam 14 allows these to contact with the shoe and the cam 40 increases the pull of the spring 36. As the end of the shoe approaches the tools, the Maltese gears rotate the work half a revolution, and the operation proceeds on the other side. At the completion of one revolution, the cam 86 depresses the slide 73 and shifts the clutch 7 to neutral position. If it is desired to pound-up the heel portion only, a supplementary cam behind the cam 86 is slid outwardly so that at the end of half a revolution of the cam shaft it may operate the slide 73.