| 摘要 |
The present invention provides a looper thread paying-out apparatus of sewing machine in which apparatus a variation of paying-out tension of the thread from a bobbin does not affect a seam. Just before a thread tensioner of a looper system which feeds a looper thread from a bobbin of sewing machine through to thread tensioner, an auxiliary paying-out apparatus is provided for paying out previously a portion of thread for a length of one stitch corresponding to an amount of horizontal cloth feed and feeding that portion into the thread tensioner at zero tension.
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