Patent GB-191111454-A (GB)
Title: Improvements in or relating to Machines for Compressing Heels, Top-lifts or the like.
Inventor: LUND THOMAS
IPC: A43D83/00
Filed: 1911-05-11
Granted: 1912-05-09
Abstract: 11,454. Lund, T. May 12, 1910, [Convention date]. Heels, machines for. -A machine for compressing heels, top-lifts, or the like, of the type described in Specification 22,839/02, is provided with improved ejector mechanism, improved controlling-mechanism for the grippers that feed the blank, and with improved means for varying the depth of the mould. To eject the compressed heel &c. from the mould, the top-lift plate 40 is formed or provided with a slotted stem 41, Fig. 3, which is guided and limited in its movements by a spring-pressed stop pin 51. The lower end of this stem is adapted to be engaged by a headed lever 100 pivoted on a pin 114, and having pivoted to it at 112 a forked piece 101, to which is connected a rod 102. This rod passes through a friction device 103, comprising a spring plunger 104 and a fibre bushing 109, which, during the downward movement of the machine head 2, clamps the rod 102, and causes the lever 100 to swing upwards about the pivot 112 into contact with the stem 41 to raise the top-lift plate 40. In case the heel should stick in the mould, causing the rod 102 to slip through the friction device, an abutment 106 on a spring-pressed yoke-shaped piece 105 is arranged in a position to be engaged bv the lower end of the forked member 101, which, when arrested, ensures an immediate positive movement of the lever 100 to eject the heel; later, the yoke-piece 105 is moved into an inoperative position by the engagement with its bevelled ends of a wedge cam 110 on the head 2. As the head rises again, the lever 100 swings away from the stem 41 and allows the top-lift plate 40 to drop, and the lever and rod 102 are positively returned to their normal positions by the engagement of the top edge of the cam 110 with a shoulder 103* on the forked piece 101. The blank-feeding mechanism, Figs. 3 and 5, comprises a slide 60 formed with an abutment 64 for the breast of the heel, and having pivoted to it geared arms 61 provided with removable spring-pressed pivoted clamping-plates 62, and with shoulders 66 to push a compressed heel off the top-lift plate into the discharge shoot. One of the arms 61 has an extension 67, which is normally held by a spring-pressed pin 70 against a lug 69, to keep the arms 61 closed. A sliding block 71 is mounted in this lug, and, in the movement of the slide 60 into position over the mould, is engaged by a stationary camplate 75, which forces the block inwards against the action of the spring pin 70, and opens the arms 61. The shape of the cam-plate 75 is such that, whenever the head moves towards the heel seat die 25, the arms 61 are opened; this avoids any possibility of the arms being caught in the mould. The slide 60 is reciprocated by yielding connexions 93, 94, 96, 99, 97 with the rising and falling head 2, lost motion being provided for during the first part of the rise of the head to give time for the workman to insert a heel in the clamps. The depth of the mould is adjusted by means of wedge blocks 116, 120, Figs. 7 and 9, the engaging-surfaces of which are provided with a series of steps, each comprising a flat portion 125, and an inclined riser 126. Vertical adjustment of the block 120 is effected by means of a screw 119, which moves the block 116 horizontally through an amount shown by indicating-marks 127, 128.