Method for varying the curvature of the sewn tip of stockings wi

Details Method for varying the curvature of the sewn tip of stockings wi Method for varying the curvature of the sewn tip of stockings wi

1992-02-26

1993-05-04

Nerbun, Peter

Sewing

Elements

Frames

1122623, 11212115, D05B 2100

Patent

active

052071650

ABSTRACT:
A method and device are provided to change the curvature of the seam of the tip of stockings wherein a sewing machine is utilized in correspondence with a rotating, circular, horizontal plane for supporting the flattened tip of the stocking to be sewn with a suspended coaxial plate with alternating vertical motion and jointly rotating for holding the tip of the stocking steady during the sewing. A device is disclosed for gripping in several points, separately, the free end of the flattened tip of the stocking to be sewn which projects beyond the rotating sewing plane (4). A pneumatic arrangement is provided for activating and deactivating, respectively, the gripping device. A device is provided for moving the gripping means (14) in a longitudinal direction from the sewing plane (4) for obtaining an elastic extension of the fabric from the tip of the stocking having been gripped and a motion of approach to the rotating sewing plane to obtain the rectilinear motion of return in the initial position having allowed the gripping of the stocking: structure is also provided for synchronizing the actions of the gripping device of the stocking with those of the above-mentioned plate of the sewing machine.

REFERENCES:
patent: 4444140 (1984-04-01), Moyer
patent: 4903621 (1990-02-01), Hodges et al.
patent: 5014634 (1991-05-01), Hodges et al.
patent: 5040475 (1991-08-01), Fournier et al.

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