Patent GB-190115347-A (GB)
Title: Improvements in or relating to Machines for Inserting Fasteners in Boots and Shoes and Leather Goods and the like.
Inventor: BOULT ALFRED JULIUS
Filed: 1901-07-29
Granted: 1902-07-24
Abstract: 15,347. Boult, A. J., [United Shoe Machinery Co.]. July 29. Nailing.-Relates to a nailing-machine for inserting fasteners in boots, shoes, and other leather articles, and the like, the invention being shown applied to a machine of the kind described in Specification No. 1494, A.D. 1893. To the lower end of the rocking or feeding head B is bolted a block 3 having a vertical driver passage 4, two side slots, and a planed surface with a cross-groove 7 to receive projections 8 on the lower end of the raceway 9. A nose or throat block 10, having a driver passage 12, is connected by a set-screw 13 to the block 3. The upper ends of the members of a yielding nail guide 16 are pivoted in the side slots in the block 3, and the lower ends are provided with tapered grooves and pressed together by a spring 20. The block 3 has an extension 14 cut away to form a stop for one of the guidemembers 16, a similar stop 15 being formed on the nose 10 for the other guide member. The nose has, at the back, a rib engaging a notch in the extension 14, which has a projection entering a horizontal slot in the lower end of the rocking head. A steel fout-plate 21, secured to the main frame of the machine, has a slot for the entrance of the awl and the passage of the nails, the slot leading to a groove in which travel the large heads of the nails. The under part of the foot is preferably serrated. The raceway 9 consists of a grooved bar attached by dovetailed projections to split arms on a carrying-frame attached by a split hub to a stud on an extension of the rocking head B. The upper end of the carrying-frame has a longitudinal bore engaged by a plunger pivoted to the arm G carrying the nail pot and the frame has bosses bored to receive a shaft 29 for actuating a knockoff device to remove nails which have not been properly placed in the raceway. This device consists of a notched block 30, carried by a slide-bar 31 engaging a guiding-groove in the raceway cap 33, fixed adjustably in position by a bolt 34 and keeping the heads of the nails in proper position. The cap has a projection 35 straddled by the block 30, and the slide-bar 31 is connected by a pin and slot to an arm h on the rock-shaft 29, operated by a spring 45 and a cam 44 of the form shown acting on an arm 43. The last nail in the raceway is separated from the rest and fed to the driver passages by a steel blade having a slot 53, to clear the projections 8, and adjustably secured to its actuating-lever g<3> by a screw 56 and a projection 55. The blade has above the slot an extended arm 57, to overlie the head of the nail, and a concave surface ending in a knife-edge, while below the slot it may have a part with an abrupt inclined edge and a bevelled toe. The edge gauge 63 is carried by a toothed bar engaging a pinion 61 x on a shaft 60x mounted in the frame carrying the foot-plate 21. On this skaft is mounted a hub t carrying the gauge-adjusting handle t<1>, to which is pivoted a double pawl, either tooth on which may be held by a spring-pressed rod against a notched disc t<2> on the end of the shaft. The movement of the hub is limited by stops which strike projections on the frame. An apron or shelf 67, secured to the backplate of the nail pot, has a slot and a stop or finger 69 to guide the nails to the raceway.