Patent ID: 6164225
Filing Date: 2000-12-26
Classification: D05B

Abstract:
An arch clamp foot lifting apparatus comprising a solenoid device which is horizontally disposed in a sewing machine arm and has a plunger, a pressing member provided on the sewing machine arm to be movable up and down, an arch clamp foot and a throat plate, wherein the plunger protrudes from the solenoid device when the solenoid device is not energized, and the pressing member moves upward when the plunger protrudes from the solenoid device, and the arch clamp foot lowers while interlocking with the upward movement of the pressing member to clamp a material to be sewn on the upper surface of the throat plate, wherein the plunger retracts into the solenoid device when the solenoid device is energized, and the pressing member moves downward when the plunger retracts into the solenoid device, and the arch clamp foot moves upward while interlocking with the downward movement of the pressing member to release a material to be sewn from the upper surface of the throat plate, characterized in that:a wedge-shaped block member is connected to the plunger of the solenoid device and an upper portion of the pressing member retains on a cam surface of the block member through a driven portion.