Sewing machine includes a slackener with a member moving to twist the thread and allow any excess of thread length to be drawn off

摘要

A sewing machine includes a thread slackener with a member ( 41) whose direction of movement intersects the movement of direction of the needle so as to twist the thread and allow any excess of thread length to be drawn off. A sewing machine includes (A) a mechanism for pressing a material to be sewn onto a needle plate; (B) a thread slackener with a member ( 41) with a direction of movement intersecting that of needle ( 11) such that a thread is twisted when constrained between needle ( 11) and the material to be sewn so that an excess of thread length is pulled off, the slackener also having a drive ( 44) acting in the intersecting direction to drive member ( 41) such that at each stitch the needle tracks in the intersecting direction; and (C) a control unit for the frequency or amount of drive of drive ( 44).