Patent GB-189902895-A (GB)
Title: Improvements in Rough-rounding and Channelling Machines for Boots and Shoes.
Inventor: DORMAN WILLIAM HENRY
Filed: 1899-02-09
Granted: 1900-01-27
Abstract: 2895. Dorman, W. H. Feb. 9. Channelling; paring soles. Relates to a machine for simultaneously rough rounding and channelling a sole while the shoe is on the last. The machine is started by a hand-lever b<6>, Fig. 1, which, through the toggle-joint b<8>, b<9> and other gear, .actuates a wedge to force the loose belt pulley into contact with a cone fast on the main spindle b of the machine. The toggle-joint holds the wedge in place until released by hand. A. spring forces the pulley and cone apart when the wedge is withdrawn, and at the same time a brake strap is applied to bring the machine to rest. The paring-knife d' is carried by a lever d<2> which is vibrated by a cam. The work is fed by jaws e', e<2>, Fig. 5, which are reciprocated in a horizontal plane by a cam on the spindle b acting through a lever e<4>, and are separated by a second cam acting through the lever f<2>, which is provided with a number of pawls engaging with a ratchet bar mounted on a slide f The upper jaw e' is pivoted at e<13>, and is lifted slightly, when the lower one is depressed, by the rod e<16>, connecting it to the lever f The lower jaw is held against the work by a spring, a tripping-plate f<11> being provided to accommodate variations in the thickness of the work. Before introducing the work. the slide and lower jaw are depressed by means of a treadle acting through the rod j<3>. In order that the feeding-jaws and paring-knife may be moved to and from the guide k, they are mounted in a carriage movable in guides in the framing of the machine. This carriage is oushed forwards against a stop by a spring, and can be pulled backwards by a treadle l, Fig. 1, acting through levers l<2>and l<4>. The guide k moves in a curved slide k<1>, such as shown in Fig. 1, as turned down, but can be raised, as shown in Fig. 7, to rest against the forepart of the shoe. This movement is also effected by the treadle l acting through the lever k<6>, rod k<7>, and toothed sectors, the movement of the guide preferably taking place first. The shoe rests on a roller g, as shown in Fig. 12, which with the channelling-knife h is carried by a block h<1> on a post h<2>. This post is free to move in guides on an arm h<6>, Fig. 1, pivoted below, and is held in the raised position by a spring. The arm h<6> can be moved about its pivot to vary the distance between the channelling-knife h, and the guide k by means of a knee-lever h<10> acting through a rocking spindle h<11>, which carries a lever connected by a rod with the block h<1>. The channelling-knife h is clamped to a bell crank i<7>, Fig. 12, which is vibrated by a crank on a spindle i<6>. This spindle is driven from the main spindle b by bands, as shown in Fig. 1. The supporting-roller and channelling-knife are depressed by a treadle through the gear shown when work is to be introduced. The column of the machine is made telescopic, to adjust the work to the height of the operator, and it may also be inclined by providing a supporting-base such as shown in dotted lines in Fig. 1.