Presser foot for concealed slide fasteners

Abstract From the Canadian patent

A presser foot adapted to be attached to a sewing machine for sewing a concealed type of slide fastener to a garment fabric or the like, the foot having in its sole or bottom surface a pair of spaced guide grooves. A substantially V-shaped partition is disposed longitudinally centrally of the foot and separates the guide grooves. This partition has an integral projection extending downwardly to register with the bottom surface of the foot and laterally beyond both sides of the partition whereby the folded edge of the concealed fastener is retained in unfolded disposition at the initial stage of sewing operation.