Patent GB-190915957-A (GB)
Title: Improvements in or relating to Slugging Machines for use in the Manufacture of Boots and Shoes.
IPC: A43D69/04
Filed: 1909-07-08
Granted: 1910-08-08
Abstract: 15,957. Heatons, Ltd., and Heaton, W. July 8. Slugging.-Relates to slugging-machines for use in boot and shoe manufacture, and is stated to be more particularly applied to machines of the type described in Specification 9117/00, [Class 17, Boots &c.]. According to the present invention, means are provided whereby, by the operation of a single kneelever &c., specific prearranged changes, as regards the material, length, size, shape, number, and disposition of the slugs, can be effected during the continuous operation of the machine. Provision is also made for varying the blow of the driver according to requirements. Figs. 3, 4, and 5 show various changes which may be effected in slugging, for example, with round brass slugs b, diamond iron slugs c, and square iron slugs d. In effecting these changes, the lengths of the different slugs may also be varied. The machine is provided with a driver throat 1, Figs. 1 and 2, having one or more passages 2 corresponding to the number of rows of slugs to be inserted, and with a wirefeed throat 3 having passages 4, one for each kind of wire or slug. The throat 3 is shogged, to change the relationship between the passages 2, 4, by a sliding cam bar 7 &c. The wires 5 pass, as usual, over a ratchet - feed. As shown, the feed - rollers 10 are provided with guards 13, which act in the known way, as described in Specification 773/05, [Class 17, Boots &c.], to lift the driving - pawls out of the ratchet-wheels. In the present instance, the guards are geared to sliding racks 16 connected to bars 17, which have adjustable pin- and-slot connexions with a rocking lever 18. The cam-bar 7 may be detachably connected to one of the bars 17, as shown. The rocking lever 18 is actuated by a sliding rod 23, which is preferably continuously reciprocated, as by the linkage 31, 34, 33, from a cam 25 &c. The bar 23 has two teeth 26 adapted to be engaged by one or other of two detents 27 connected to the rocking lever, the detents being normally held in inoperative position bv a spring 28. A sliding bar 29, provided with prongs 30 embracing the detents 27, is connected to a knee-lever or the like (not shown), by the operation of which one or other of the detents is brought into engagement with the corresponding tooth 26. By these means, one feed-device may be put out of action and the other thrown in; or, by suitably adjusting the connexions, the guards may be moved to vary the length of feed of either or both wires &c. The normal relationship of the guards may be varied in prearrangement of the mechanism, by engaging the racks 16 with different teeth of the corresponding feed wheels. The rocking lever 18 may be connected to a hand-lever 37. The work-feeding awl 38 is limited in its rearward travel by an adjustable stop-plate 39 &c., as described in Specification 9117/00, but the stop - plate can be adjusted while the machine is running. For this purpose, it is mounted on a plunger or slide 40 &c., which is normally pressed outwards by a spring 42, and a slidable wedge-block 44 is interposed between the end of the slide 40 and a bracket 43. The block 44 may be operated, through the link 45, bell-crank lever 46, 46<b>, and link 47, from the bar 37, which moves in conjunction with the rocking-lever 18. When it is not to be actuated, the block 44 may be fixed in position by a setscrew 48. To enable the blow of the driver to be varied when changing from a single row to two or more rows of slugs, or from short slugs to long slugs, or vice versa, the buffer 51, which limits the movement of the driver-bar 49, is mounted on a sleeve 52 screwed into a boss 53, so that, by rotating the sleeve, it is raised or lowered to effect the required adjustment. As shown, the sleeve 52 has an arm 54 connected by the link 55 to a third arm on the bell-crank lever 46. Instead of having this screwing movement, the sleeve may be operated with a sliding movement by a rotating cam &c. In prearranging the machine, the operative connexions of the parts not required to be operated are disconnected.