Patent GB-122211-A (GB)
Title: Improvements in or relating to Lasting Machines.
IPC: A43D21/02
Filed: 1917-10-16
Abstract: 122,211. British United Shoe Machinery Co., (United Shoe Machinery Co.). Oct. 16, 1917. Lasting.-A lasting-machine of the type of the Consolidated-Hand-Method lasting-machine is arranged so that the machine comes to rest with the gripper open and the combined wiper and tack carrier withdrawn and loaded with a tack; further, it is arranged so that the adjustments of the gripper, driver, raceway, and the usual edge gauges necessary when changing from heel seat to forepart lasting are effected simultaneously. The usual cam shaft 5, Figs. 6 and 7, carries a pulley 6, the inner face of which is adapted to be engaged by. a brake shoe 12 carried bv a spring-pressed pivoted lever 15. Above the brake is arranged an adjustable foot 25 carrying a spindle 24 encircled by a spring 23, which is adapted to be acted upon by a collar 22 forming part of a spring-pressed slide and carrying a roll 21 located in the path of a cam 20 on the shaft 5. The foot 25 normally rests on a spring-pressed horizontal slide 26. which has an opening into which a wedge-shaped end of a spring-surrounded brake-releasing rod 10 projects. When the starting treadle is depressed, the rod 10 withdraws the plate 26 and the brake 12 is raised clear of the pulley. When the treadle is released, the plate 26 is moved beneath the foot 25 ready to apply the brake as soon as a single brake-setting point on the cam 20 engages the roll 21; this point is set to apply the brake at that point in the cycle of the machine at which the gripper is open and the wiper retracted. The adjustments above referred to are effected from a shaft 69. Fig. 2, through movement of a handlever 78, this shaft being connected to a rod 55 which controls the position of two pairs of spring- pressed stops, one pair 36 being adapted to be moved into and out of operative position between the usual gripper updraw lever 35 and its actuating-slide 32, and the other pair 56 into position between a collar 51 on the tack-driver bar and the head which limits the stroke of the driver. The movement of the shaft 69 is also effective to shift the double raceway 65, which is connected by a rod 61 to a stud 68 eccentrically mounted in a pinion 66 on a shaft 59; the pinion gears with a segment 67 on the shaft 69. If nc tacks are desired, as when binding toes with wire, an eccentric on the stud 68 may be turned by a handle 63 to move the raceway into midposition out of register with both supply shoots. The shaft 59 has an eccentric connexion with a link 71, Fig. 3, adjustably connected to a lever 72, one end of which has a pin' and slot connexion 74 with the machine head, while the other end is connected to an edge-gauge carrier 75. When the heel seat is to be lasted, the shaft 69 is turned to withdraw the stops 36 so as to suspend the action of the gripper, to move the raceway 65 so as to supply short tacks, and to withdraw the stops 56 to allow full insertion of such tacks; at the same time, the gauge carrier 75 is moved inwardly towards the body of the machine so that these tacks will be driven inside the location for the heel-attaching nails. In addition to this adjustment of the gauge-carrier, the usual thick edge gauge 80, which is used at the heel seat, is moved into operative position by rack and pinion mechanism 85, 86 operated through a link 82 from a crank-arm 81 on the shaft 69. When the reverse movement of the shaft 69 is made, the gauge 80 is turned down out of the way leaving the usual thinner gauge 79 in operative position for shank and side lasting. Specification 122,349 is referred to.