Patent ID: 7444951

Claim:
A curved edge sewing system for sewing a curved edge of a cloth, comprising: a cloth support table; a sewing needle located at a sewing position relative to the cloth support table; a cloth presser device movable towards and away from the cloth support table and rotatable relative to the sewing needle, the cloth presser device comprising a gripper foot on a lower end of the cloth presser device, wherein the gripper foot has a disk-shaped cloth contact surface adapted for pressing the cloth against the cloth support table, and the gripper foot has a vertical axis through a central portion thereof that is coaxial with a vertical axis of rotation of the cloth presser device; a first driver operatively connected to the cloth presser device and moving the cloth presser device towards and away from the cloth support table; a second driver operatively connected to the cloth presser device and rotating the cloth presser device relative to the sewing needle; and a controller having a first signal supplied to the first driver and actuates the first driver, and the controller having a second signal supplied to the second driver and actuates the second driver.