Automatic hemming apparatus

Details Automatic hemming apparatus Automatic hemming apparatus

1977-05-02

1978-06-20

Hunter, H. Hampton

Sewing

Special machines

Darning

112141, 112147, D05B 3302, D05B 3502

Patent

active

040955370

ABSTRACT:
Pieces of cuff material are affixed to a continuous band of linear material as the band passes through a sewing machine. A vacuum force is used to hold material in place on the continuous band as the band is moved. The pieces of material are individually manually placed on the band in a manner such that initially only a small portion thereof is attracted by the vacuum force thereby facilitating correct relative positioning of the piece and band such that the edge of the piece overlaps the edge of the band. Folding of the overlapping edge of the piece over the edge of the band is also achieved through use of the vacuum, which pulls the overlapping edge of the piece around the edge of the band and into a slot in the vacuum enclosure, immediately underneath the edge of the band. The folded edge of the material is creased and passed through the sewing machine for stitching. The band is then cut to form the cuff portions which are thereafter stacked.

REFERENCES:
patent: 3110232 (1963-11-01), Frei
patent: 3204591 (1965-09-01), Pickett
patent: 3544098 (1970-12-01), Hawley
patent: 3640235 (1972-02-01), Burton
patent: 3670674 (1972-06-01), Conner
patent: 3875879 (1975-04-01), Heiler et al.
patent: 3973506 (1976-08-01), Rinehimer et al.

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