Method for controlling sewing operating of a sewing machine
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United States of America Patent
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Oct 31, 2017
Grant Date -
Mar 31, 2016
app pub date -
May 6, 2015
filing date -
Sep 26, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
In a method for controlling sewing operation of a sewing machine, a stitch needle completes an in-and-out movement on a fabric with a first tension applied to an upper thread when the stitch needle, with respect to a fabric-feeding mechanism, is at a first relative position corresponding to a first pattern part of a predetermined stitch pattern. Afterward, the stitch needle is moved, with respect to the fabric-feeding mechanism, to a second relative position corresponding to a second pattern part of the predetermined stitch pattern, and completes an in-and-out movement on the fabric at the second relative position with a second tension, which is greater than the first tension, applied to the upper thread.
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