Sheet metal brake

Details Sheet metal brake Sheet metal brake

1976-12-20

1978-06-06

Keenan, Michael J.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

Clamp structure constitutes sole initial metal-deforming...

B21D 1120

Patent

active

040928411

ABSTRACT:
A bending brake for sheet metal employs a long, upwardly facing fixed clamping surface supported on a base, and a long bending arm hinged to one edge of the clamping surface. An upper clamping surface is supported for movement toward and away from the fixed clamping surface at the first ends of a number of arms which extend normally to the clamping surface and are pivotably supported near their opposite ends for rocking motion about the base. Actuating means taking the form of a cam mechanism or fluid cylinder acts between the far ends of the arms and the base to bring the movable clamping surface into and out of engagement with the fixed clamping surface.

REFERENCES:
patent: 1721698 (1929-07-01), Krueger
patent: 2357277 (1944-08-01), Weimont
patent: 2880780 (1959-04-01), Mackey
patent: 3383899 (1968-05-01), Ercoline et al.
patent: 3482427 (1969-12-01), Barnack
patent: 3914974 (1975-10-01), DeVore

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