Patent GB-208746-A (GB)
Title: Improvements in or relating to methods of and apparatus for ornamenting leather and the like
IPC: A43D11/00
Filed: 1922-08-22
Abstract: 208,746. British United Shoe Machinery Co., Ltd., and Roberts, W. T. B. Aug. 22, 1922. Branding by heat ; embossing ; scoring ; impression surfaces.- Relates to the ornamenting of leather or leather substitutes, e.g. the marginal parts of boot and shoe uppers, by branding by heat a repeated pattern thereon. The ornamentation may be produced (a) by feeding the material intermittently past a heated branding tool reciprocated to and from the work or (b) by feeding the material at a controlled rate past a. heated tool having a to-and-fro movement on the surface of the material transversely of the line of feed. Method (a). The punching-machine described in Specification 8870/98, [Class 17, Boots &c.], is modified to carry out the first process by replacing the punching-tool by a brancing-tool 1, Figs. 1 and 2, heated by an electrical cartridge 5. The tool is held in a dovetailed groove in the lower end of the vertically reciprocating plunger 2 by a spring- pressed pin 7 having a retracting finger-projection. The material is fed under the tool by upper and lower horizontally-reciprocating members, the upper feed foot 11 being rotatably secured to a spring-pressed plunger 12. The lower feed member is also capable of rotation as described below so that the curved edges of work can be fed by the tool and kept in contact with an edge gauge 38. The lower feeding block 17 is bored to receive the shank 19 of a cup 20 supported on a 'ball 121. Screwed into the cup 20 is a sleeve 21 having a roughened upper surface and provided with a spherical seating for the spring-depressed punch bed 23. Material of uneven thickness is thus accommodated by the tilting of the bed. Shoulders 15, Fig. 4, on a bracket 37 fixed to the machine frame and engaging shoulders 14 at its upper end, restore the feed foot 11 to its initial position after a turning movement due to the feeding of a curved edge. A cam-operated presser foot 28 and the foot 11 may be operated by a handle 45 in the manner described in the above Specification. A machine of the type described in Specification 22884/04, [Class 17, Boots &c], may be employed for this process, the tool moving forward with the work so as simultaneously to perform the feeding and branding operations. Method (b). In this operation the skiving- knife described in Specification 13563/92, [Class 12, Bearings &c.], is replaced by a heated tool 51, Fig. 6, mounted eccentrically on the end of the shaft 50. The material is fed between the rotating disc 53 and wheel 52 past the rotating tool, a repeated pattern being thus formed on the material. The character of the pattern is determined bv the relative velocities of the tool and feed and the amplitude of the tool movement. Uniform penetration of the tool 51 in material of varying thickness is obtained bv connecting the shaft of the disc 53 to the tool shaft 50 by a bracket 54, this connection allowing the shaft 50 to be moved vertically. Specifications 2886/75, [Class 112, Sewing &c.], and 10917/96, [Class 101, Printing other than letterpress &c.], are referred to.