Patent GB-771961-A (GB)
Title: Improvements in or relating to machines for feeding and securing strip material suchas platform covers, to shoe parts
IPC: D05B73/12
Filed: 1954-04-29
Abstract: 771,961. Sewing machines. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). April 28, 1955 [April 29, 1954], No. 12400/54. Class 112. A machine adapted to secure the edge portion of strip material to shoe parts comprises an edge gauge against which the strip material is pressed edgewise to maintain it in operating position, and a single pair of rolls arranged to engage opposite faces of the strip material adjacent said edge portion and located in advance of the edge gauge, the rolls being adapted to urge the strip material against the edge gauge, and also against a further surface located in advance of the rolls. Outsole-sewing.-A shoe upper 2, Figs. 1, 4 and platform cover 8 are secured in an outsole-sewing machine, to a platform 6 to which a sock 4 has been attached, the stitches entering the grooved edge of the platform, and the arrangement being such that the operator manually aligns the edges of the upper and sock before these are pressed against an edge gauge 24 situated in the vicinity of the sewing point, while the platform cover is gripped between a pair of rolls 32, 40 which tend to direct the cover along a line 54, Fig. 6, inclined at an acute angle B to the line of work feed 48 past the sewing point 50, whereby the edge of the cover is urged against the edge gauge 24 and a further surface 28, and travels along a line 52 inclined at an acute angle A to the line of work feed 48, whereby it is stated, the edge of the cover becomes automatically aligned with the manually aligned edges of the upper and sock. The work rests on a support 10 and is fed by the combined action of a gauge 12 which enters the grooved edge of the platform, a presser foot 16 and a curved needle 18, the work being held during the return strokes of the feeding means by non-feeding presser foot 20 and non- feeding gauge 22. Roll 32, which has a knurled front end 56, is carried by a bracket 26 adjustably secured to the machine frame. Roll 40 is carried by an arm 36 pivoted at 34 to bracket 26, the rolls being urged together by a spring 42. Surface is provided on bracket 26 and the latter is also provided with a pair of pins 58, 60 adapted to guide the cover against surface 28. Work guides.-In an alternative arrangement an upper 202, a sock 204 to which is attached a platform 206, and a two-piece platform cover 319, 320 are cut in the flat, the upper being of relatively thin flexible material, and the parts being so shaped as to assume the form of a shoe where their registering edges are sewn together. A straight-needle machine is used, the platform is disposed uppermost and the upper and sock are guided manually against an edge gauge 212, while the platform cover is guided automatically against the edge gauge by means of a pair of rolls 250, 258. The work rests on a support 215 and is fed by the combined action of a presser foot 220, the needle, and a four-motion feed dog. A non-feeding presser foot 216 holds the work during the return stroke of the feeding means. Roll 250 has a knurled flange 272 at one end and is carried by a bracket 252. Roll 258 has a knurled flange 274 at one end and is axially slidable on a pivot 264 carried by an arm 260 which is mounted on a pivot 266 carried by bracket 252. A spring 270 biases the rolls together and also biases arm 260 along the axis of pivot 266 against bracket 252. The latter is pivotally mounted a plate 298 which in turn is slidably mounted on the horizontal flange of a bracket 254 adjustably secured to the machine frame, screws 3.02 and 306 fixing the rolls in angular and lateral adjustment respectively. Roll 258 is covered by a guard plate 308. The axes of the rolls are disposed at an angle to the horizontal. To separate the rolls at the end of stitching, arm 260 carries a bar 314 which ends in a hook 316 disposed above the non-feeding presser foot 216, whereby raising of the latter serves to pivot arm 260 away from roll 250. The edge of the cover is directed towards the rolls by a channel guide 290 adjustably secured to bracket 254, said edge making contact with a bevelled edge of arm 260 before it reaches the rolls. The arrangement is such that the rolls tend to direct the cover along a line 288 disposed at an acute angle B to the line of work feed 286 past the stitching point 210, whereby the edge of the cover is urged from the guide 290 to the edge gauge 212 along a line disposed at an acute angle A to the line of feed 288.