Method and apparatus for automatically sewing belts

Details Method and apparatus for automatically sewing belts Method and apparatus for automatically sewing belts

1977-10-11

1979-06-12

Schroeder, Werner H.

Sewing

Special machines

Darning

11212112, 112147, 1122623, D05B 2300

Patent

active

041576870

ABSTRACT:
A method and apparatus are disclosed for forming a loop in a seat belt and stitching the looped belt plies together. One sewing machine performs the strength forming stitch pattern such as the butterfly stitch and it is used as a master sewing machine whose sewing time of operation is maximized. During the stitching of butterfly pattern, another seat belt will have been fed into a loop forming means at which a loop is formed and its looped belt plies will have been tacked together by another sewing machine sewing a zigzag stitch. An automatic transfer means transfers looped belts from the first sewing station to the butterfly stitching machine. An automatic bobbin changing apparatus is also provided.

REFERENCES:
patent: 3151583 (1964-10-01), Troll et al.
patent: 3670679 (1972-06-01), Campbell
patent: 3776162 (1973-12-01), Scholl
patent: 3785907 (1974-01-01), Barr et al.
patent: 3832960 (1974-09-01), Mayer et al.

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