Patent GB-191419857-A (GB)
Title: Improvements in or relating to Machines for Marking Boot and Shoe Uppers or other Articles.
IPC: A43D8/26
Filed: 1914-09-16
Granted: 1915-10-18
Abstract: 19,857. British United Shoe Machinery Co., [United Shoe Machinery Co.]. Sept. 16. Marking work for sewing.-A machine for marking boot and shoe uppers or other articles, but particularly for marking the buttonhole flies of shoes to indicate buttonhole locations, is provided with a plurality of markers arranged in line and with adjusting means which vary the spacing of the markers for a change in the size of the work and also alter the shape of the line of the markers. In the machine described, the markers comprise punches, but they may comprise devices which stamp or indent the work, or which mark the work with colouring-matter such as ink or coloured chalk; moreover, the machine may be used to locate the position of buttons, or, simultaneously, of both buttons and buttonholes. The machine is fitted with fourteen marking-devices, each of which consists of a punch 54, Fig. 6, and a co-operating die 56 mounted respectively in the front arms 62, 88 of a carrier 64, Fig. 5. The punches are surrounded by sleeves 58 arra.nged to serve as work strippers, and are normally spring- pressed upwards to an extent limited by interlocking spring clips 76, 78, but are adapted to be lowered simultaneously by a cross-head 100. Fig. 2, which is reciprocated on guide posts through yielding or other connexions with eccentrics on a cam-shaft; this shaft is driven from a main shaft through gearing including a one-revolution clutch. The centre marker, or one of the two centre markers, is fixed, and the others are adapted to be moved relatively to it to space them and to adjust them to the curve of the buttonhole fly, for which purpose, each carrier 64, Fig. 5, has secured in its split renr end a tang 144 adapted to slide freely between forked arms 142 of a pivot rod 140, which is fitted to turn freely in the machine frame. The necks 164 of the dies 56 project through oblique slots 174, Figs. 2 and 5, in a spacer 166 and then into curved slots 156, 158 in guide plates 160, 162 pivoted at their inner ends about the neck of the fixed die; the spacer 166 is adapted to be operated by a hand-lever or its equivalent, and slides freely on blocks secured to or integral with the machine frame 2. The outer free end of each of the plates 160, 162 has pivoted to it a block 180, Figs. 2 and 4, arranged to slide between guide rails 184 on a lever 186, which is pivoted by a threaded bolt 190 to second lever 188 fulcrumed at 192 to a slide block 194. A spring-pressed plunger 196 mounted in an extension 198 of the lever 186 is adapted to engage one or other of a series of holes in the lever 188, which is adapted to be swung about its pivot and locked by a second plunger 202. The block 194 is arranged tu slide in guides 204 in the frame 2, being operated by a roll 210 mounted on a bolt 208 screwed into a lug 206 projecting from the block; the roll engages a track 212 formed by plates 214 depending from the spacer 166. The arrangement is such that movement of the spacer to vary the spacing of the markers causes a proportional swinging movement of the plates 160, 162, so that the markers are also adjusted to the outer curve of the buttonhole fly. This enables a range of flies of the same style to be operated upon very quickly, and without any other adjustment; for a different style of work, .the curve of the markers is adjusted by movement of one or other or both of the levers 186, 188. To determine the distance of the markers from the edge of the work, the machine is provided with the three back gauges 216, 218, 220, adjustably carried by the plates 160, 162, and with two end gauges adapted to be brought into engagement with the opposite edges of the work. Each end gauge comprises a body part which is removably secured by a spring clip 236, Fig. 7, to the stripper 58 of the outermost marker, and which carries a rotatable stem 228 bored horizontally to receive adjustably the shank 230 of a gauge rod 232. This rod is bent to form a vertical portion which projects into the slot of the plate 160 or 162 to engage the edge of the fly. The guide slots 156, 158 of the plates 160, 162 are sufficiently long to enable markers not required to be moved into an inoperative position at the ends of the slots.