| 摘要 |
PCT No. PCT/GB89/00435 Sec. 371 Date Dec. 28, 1989 Sec. 102(e) Date Dec. 28, 1989 PCT Filed Apr. 24, 1989 PCT Pub. No. WO89/10442 PCT Pub. Date Nov. 2, 1989.Apparatus is provided for forming on a work piece a line of stitching substantially free from puckering by placing a stitch-engaging element of a width less than the length of a stitch to project across the line of stitching at the sewing position. The stitch-engaging element comprises a plurality of flexible filamentary elements arranged side by side in close juxtaposition and an endless row of stitching-engaging elements movable in a direction longitudinally of the row of stitch-engaging elements and positioned so that a portion of the row of stitching-engaging elements projects across the line of stitching at the sewing position. The flexible filamentary elements project radially from the periphery of a disc to form an endless row of stitch-engaging elements. |
