Accessory kit for a bending brake for bending curves in sheet me

Details Accessory kit for a bending brake for bending curves in sheet me Accessory kit for a bending brake for bending curves in sheet me

1997-06-23

1998-10-13

Crane, Daniel C.

Metal deforming

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

Clamp structure constitutes sole initial metal-deforming...

B21D 504

Patent

active

058195777

ABSTRACT:
An accessory kit for a portable bending brake allows bends and rebends to be made in elongated sheet-metal workpieces. The bending brake with which the kit is used has an elongated bed, a clamp which bears against the bed, and a bending apron hinged to the bed around a hinge axis. The kit includes at least one mandrel holder which bears a curved mandrel such as a pipe, and which holds the curved mandrel with its forward surface before the hinge of the apron. The kit also includes an apron fill piece and an auxiliary apron, which has a curved surface normally located below the support plane of the bed.

REFERENCES:
patent: 338079 (1886-03-01), Kittredge
patent: 338100 (1886-03-01), Ohl
patent: 2208061 (1940-07-01), Warger
patent: 2325736 (1943-08-01), Bowman
Pp. 59-63 of Sheet Metal Workers' Manual, by Broemel et al, published 1939 by Frederick J. Drake.
Brochure for Van Mark bending brakes.
Brochure for Tapco portable bending brakes.
Portions of a brochure for Roper Whitney bending brakes.

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