Sewing – Elements – Frames
Patent
1982-08-30
1985-05-07
Hunter, H. Hampton
Sewing
Elements
Frames
11212114, 112134, D05B 9700, D05B 3508, D05B 302
Patent
active
045150974
ABSTRACT:
The disclosure is directed to method and apparatus for automatically forming and sewing pleats in draperies and the like. Conveyor feeding of the fabric margin is provided for. A rotatable indexing drum, with a plurality of pleating stations, engages the fabric in successive spaced area and forms the desired pleats. A displacement element acts on the fabric between pleat-forming stations of the drum for uniform, controllably variable pleat spacing. The formed pleats, while gripped by the pleat-forming drum, are advanced to a sewing station, where the sewing machine and a related fabric clamp function as manipulating jaws to engage and remove the pleat, which is thereafter held by the clamp while the pleat is stitched. A unique form of clamp allows the sewing machine to be in continuous motion during the stitching operation, while the fabric is held substantially stationary. The system provides for automatic centering of the pleats, regardless of minor variations in fabric width, as well as expeditious stitching along the end runs. Operator involvement is limited to loading of the fabric onto the in-feed conveyor and removing the finished article after completion of the pleating operations. A single operator can easily service two machines operating at a relatively high rate of speed.
REFERENCES:
patent: 3661103 (1972-05-01), Firestein et al.
patent: 3760746 (1973-09-01), Portilla, Jr.
patent: 3824964 (1974-07-01), Ryan
patent: 3862610 (1975-01-01), Brocklehurst
patent: 3874311 (1975-04-01), Kenney
patent: 4073246 (1978-02-01), Crawford et al.
patent: 4079682 (1978-03-01), Nishiwaki
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