Sewing machine attachment - has horizontal rod fitted through hole in pressure bar, with end bracket for needle or pin which marks centre of curved or circular seam

摘要

A sewing machine attachment, designed to produce curved or circular seams, consists of a horizontal rod (9) which is fitted through a hole (16) in the machine's pressure bar (3). The rod (9) carries a bracket (10) with two arms (11, 12), the ends of which have holes (13, 14) for a vertical needle or pin (15) which pierces the material to be sewn and acts as the centre of the curve or circle. The needle/pin (15) is set at the appropriate distance from the sewing machine needle (8), and during a normal sewing operation the material revolves round the needle/pin (15), producing a seam which runs in a curve centred on the needle/pin and, if continued, makes a complete circle. ADVANTAGE - Single accessory enables curved seam to be made on either side of material carrier.