Patent GB-190001898-A (GB)
Title: Improvements in or relating to Apparatus for Setting Protectors in Boots and Shoes.
Inventor: BOULT ALFRED JULIUS
Filed: 1900-01-30
Granted: 1901-01-30
Abstract: 1898. Boult, A. J., [United Shoe Machinery Co.]. Jan. 30. Sole and heel protectors. - Relates to machines for inserting protectors of horseshoe or like cross-sec tion. Fig. 1 shows a side elevation of one form of machine, which is started by forcing in the wedge B by means of the treadle B<3>, and is stopped by releasing the treadle. T h i s treadle also actuates a brake strap, which is further controlled by a cam so that the machine is always stopped in the same position. The stock S is clamped against the footplate D by a horn forced upward by a spring, and depressed, to allow the stock to be fed,by a cam B<9> acting through the gear shown. The rod C<5> is connected to the rod C<10> by a ratchet and pawl arrangement which allows the horn automatically to adjust itself to the thickness of the stock. The horn can also be depressed by means of a treadle. The protectors are fed to a hopper E<9> which is rotated from the main shaft. In a modified machine, the hopper is continuously rotated from the loose pulley. Projections e lift the protectors and drop them on to a shoot e', which delivers them to a raceway leading to the driving-devices. A plate straddling the raceway arrests any improperlypresented protector, and a wheel 23 throws it back into the hopper. The raceway is bent through an angle of 45‹, so that the ends of the protectors are presentel to the operator. Fig. 3 shows a cross-section of a raceway in which the protectors are held on the part e<4> by a cover-plate e<7>. At the lower end, the part e<7> is bent round as at e<8>, Fig. 6. The protectors are dropped one by one into a recess in a carrier plate a<4>, Fig. 6, which delivers them to a recess in the footplate D, whence they are driven into the shoe. The carrier is oscillated between the raceway and the recess in the footplate by a cam acting through a lever and connecting-rod. The lowest protector in the raceway rests on a stop f, and the next one is held by an arrester a, Figs. 6 and 7. As the carrier moves from the position shown in Fig. 7 towards the right, the stop f is withdrawn by engaging with the part 12 of the plate D, and the lowest protector is dropped on to the plain part of the carrier. The others are held up by the arrester a. After the carrier has delivered its protector to the plate D, it returns, and the stop f is returned to its operative position. The pin a<3> withdraws the arrester, and allows the protectors to slide down the raceway on to the stop. As shown in Fig. 7, the stop is bevelled on its lower side to assist gravity in pushing the protector into the carrier. The recesses in the carrier and footplate have central projections to prevent the protectors from turning or twisting. The driver is grooved to accommodate these central guides, and is screwed to the driver-bar for adjustment purposes. The work-feeding device is shown in Figs. 4 and 9. It consists of a plate b<2> reciprocated by a cam. A block b<7>, adjustably secured in this plate, carries a toothed wheel b<4> and a ratchet-wheel b<5> locked by a spring pawl. When the plate b<2> is moved in one direction, the teeth of the wheel b<4> grip the work and feed it ; while moving in the other, the pawl allows the wheel b<4> to rotate over the work. The carrier plate may be variously modified. It may be made to move endwise in place of being oscillated, and may be in the form of a pair of jaws which are opened to receive a protector from the raceway, are closed on it, and are again opened to drop it into the footplate. In a modified machine, the footplate and carrier are open in front to allow the operator to see the progress oE the work. In others, a special camactuated device is employed to push the protectors into the carrier. In a further modification, the end of the raceway rests in the carrier, so that the raceway moves to and fro with the carrier. In another modification, the central guide for the protector while in the carrier is movable relatively to the carrier, so that, while the latter is moving from the raceway to the opening in the footplate, the central guide secures the protector but is withdrawn to receive and drop the protector. The protector shown is of horse-shoe section, but the machine may equally well be employed to insert protectors of channel, V, or S-section.