Automatic sewing device for sewing together a tubular workpiece

Details Automatic sewing device for sewing together a tubular workpiece Automatic sewing device for sewing together a tubular workpiece

1987-05-22

1988-04-12

Hunter, H. Hampton

Sewing

Special machines

Darning

112147, 11212114, 112153, D05B 2100, D05B 3500

Patent

active

047366958

ABSTRACT:
In an automatic sewing device for sewing together tubular workpieces such as sleeves, and pocket-shaped workpieces, such as cuffs, there are provided an inner clamp, a central clamp and an outer clamp. These clamps are associated with an inner sleeve clamp and an outer sleeve clamp, the latter being associated with a folding device for gathering up a material fullness of the tubular workpiece. Devices are also provided for opening the pocket-shaped workpiece in order that the border of the tubular workpiece may be inserted and positioned. The associated sewing machine can be moved in a straight line relative to the parts described. A part of the border of the tubular workpiece is positioned in the pocket-shaped workpiece and sewn to the latter by means of a straight-line seam. Subsequently, the clamping in this area is released and the positioning of the border of the tubular workpiece in the pocket-shaped workpiece is carried out and clamping is effected. Following this, the second partial seam is also sewn in a straight line and flat, hereby producing between the workpieces a seam which corresponds to the then approximately circular path of the joining seam between the workpieces.

REFERENCES:
patent: 2313433 (1943-03-01), Golden
patent: 2702014 (1955-02-01), Bownstein
patent: 2900934 (1959-08-01), Judelson
patent: 3329110 (1967-07-01), Bergeron
patent: 3513791 (1970-05-01), Fulp
patent: 3611959 (1971-10-01), Laurelton et al.
patent: 3613610 (1971-10-01), Hinenfeld et al.
patent: 3779185 (1973-12-01), Sakakura et al.
patent: 4370936 (1983-02-01), Moyer et al.

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