Method of and apparatus for reducing puckering occurring in a line of machine stitching during the stitching operation
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United States of America Patent
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-
Mar 12, 1991
Grant Date -
N/A
app pub date -
Dec 28, 1989
filing date -
Apr 29, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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