Bending fixture for offset plates

Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Clamp structure constitutes sole initial metal-deforming...

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Details

1014151, B21D 2504, B21D 504

Patent

active

041731379

ABSTRACT:
A bending fixture for offset plates provided with positioning holes, the bending fixture including a platform having bending bars pivotally mounted at opposite ends thereof and plate hold-down members coacting therewith, where the hold-down members are raised away from and lowered toward the platform during their operation. The bending bars swing upward above the platform with one of the bars being provided with retractable positioning pins arranged along the one bar. Each hold-down member includes an edge surface to provide an abutment for the bent over edge of the plate in order to back up its associated bending bar.

REFERENCES:
patent: 1806986 (1931-05-01), Rucker
patent: 2234170 (1941-03-01), Huck
patent: 2699812 (1955-01-01), McCormack et al.
patent: 3022728 (1962-02-01), Heller
patent: 3383899 (1968-05-01), Ercoline et al.
patent: 3456587 (1969-07-01), Hulen
patent: 3735627 (1973-05-01), Eburn
patent: 3877279 (1975-04-01), Van Cleave
patent: 3914974 (1975-10-01), DeVore

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