mehrnadel - doppelkettenstich sewing machine

摘要

Multi-needle double chain-stitch sewing machine with an eccentric shaft (2) which executes an eccentric movement synchronously with the rotation of a lower shaft (1), and with a rear upper knife rod (4) which is arranged loosely on the part of eccentric movement of the eccentric shaft (2), the eccentric movement being transmitted to a front knife rod (8) via a connecting rod (6), the shank part of an upper knife-rod ball (9) being fastened to an upper knife holder (10), an upper knife (4) fastened to the upper knife holder (10) executing a vertical movement with the upper knife shaft (11) as the centre of rotation, and the fabric edge consequently being trimmed automatically during the sewing operation. IMAGE