Sewing machine for e.g.. leather bags production includes a fixed needle arm and a hook arm oscillating to maintain optimised positioning of the hook

摘要

The sewing machine for eg. leather bags production has a fixed needle arm carrying a needle drive, above a hook arm (30). The U-shape hook arm (30) oscillates round a horizontal axis (a) coinciding with the axis of rotation of the hook. The position of the heat of the hook is maintained, with the hook very near it.