Sewing machine accessory

A sewing machine accessory for sewing at least two layers of material to each other in an irregular pattern with a sewing machine having a plate with a supporting surface having a hole formed therein, a feeder having a high friction surface positioned in the hole and having an intermittent motion relative to the surface of the plate, a needle and a foot device for pressing material to be sewn onto the supporting surface of the plate and guiding the needle through such material in a selected pattern, said sewing machine accessory comprising

• independent guide means positionable on the supporting surface of the plate and in intermittent contact with the feeder of a sewing machine for guiding the sewn material through an irregular pattern, said guide means comprising a pair of complementary jig devices shaped to fit in substantial juxtaposition with layers of material to be sewn to each other positioned between said jig devices, said jig devices having substantially the same irregular configuration and complementary cross-sectional areas, one of the pair of complementary jig devices comprising a frame of substantially rigid material having a cross-sectional area of predetermined geometric configuration and being utilized as the bottom one of said jig devices and the other of said pair of complementary jig devices comprising substantially rigid material having a cross-sectional area of predetermined configuration with a channel formed therein of substantially the same configuration and dimensions as the cross-sectional area of said one of said pair of complementary jig devices and being utilized as the top one of said jig devices, and clamping means for releasably clamping the jig devices in substantial juxtaposition with the material to be sewn positioned therebetween;
• and
• guide member means extending from the foot device of a sewing machine for maintaining the guide means in a predetermined position relative to the needle of the machine while said guide means is moved between the foot device and the supporting surface of the feeder of the machine through the entire duration of said guide means.