Method for operating a chain-stitch sewing machine and chain-stitch sewing machine

摘要

The method involves arranging needle (3) above the workpiece support (1), and guiding an upper thread (6) by resting on the sewing material fabric (2), which is concatenated with a lower thread (7). The lower thread is supplied as needed to the retaining element and held with respect to the movement direction and/or moving speed of the sewing material in accordance with the movement path of pivoting movement of the gripper (11), moved along a circular arc segment-shaped path of movement. The lower thread arranged between the gripper and the retaining element is stressed. An independent claim is included for chain stitch sewing machine.