Method and device for controlling the movement of a needle in a sewing machine

摘要

A method and device for controlling movement of the needle in a sewing machine ( 1 ) based on a detection device ( 27 ), which detects the movements of the visible surface of the manually displaceable article to be sewn ( 3 ) is provided. The stitch formation of the sewing machine ( 1 ) is controlled by detected changes in positions of the article to be sewn ( 3 ) in connection with a predetermined stitch length. The detection device ( 27 ) can be integrated into a sewing foot ( 23 ) entirely or partially.