Walter Frederick Marsh

US Patent:

39437442, Mar 16, 1976

Filed:

Jun 19, 1974

Appl. No.:

5/480813

Inventors:

Walter G. Marsh - Birmingham MI
James J. Rhoades - Westland MI

Assignee:

Tapco Products Company, Inc. - Detroit MI

International Classification:

B21D 3102

US Classification:

72326

Abstract:

A louver cutter comprising a body having a pair of spaced arms, the lower arm defining a base and the upper arm overlying the base. A lower die pad is rotatably mounted on the base for rotation about a vertical axis and is lockable in any adjusted position. A lower die block is fastened to the lower die pad such that the lower die pad has a portion projecting upwardly and spaced from the lower die block. A piston is slidable for vertical movement in said upper arm and means are provided for moving the piston toward and away from the lower die block. An upper die block is mounted on the piston and has an opening into which the piston extends. A fastener holds the upper die block on the piston. The upper die block has a vertical surface and a horizontal surface engaging the vertical and horizontal surfaces of a cutter blade. A resilient pad on the underside of said upper die block is adapted to engage the upwardly extending portion of said lower die pad during the final movement of the blade downwardly adjacent in cooperative relation with the lower die block.

US Patent:

47667575, Aug 30, 1988

Filed:

May 11, 1984

Appl. No.:

6/609515

Inventors:

Douglas G. Break - Farmington Hills MI
Walter G. Marsh - Detroit MI
James J. Rhoades - Garden City MI

Assignee:

Tapco Products Company, Inc. - Detroit MI

International Classification:

B21D 504

US Classification:

72319

Abstract:

A sheet bending brake comprising a frame having a fixed jaw and a movable jaw and an anvil member adjustably secured to the movable jaw. The fixed jaw has a clamping surface movable between workpiece clamping and non-clamping positions relative to the clamping surface of the fixed jaw. A bending member is hingedly connected to the fixed jaw. The movable jaw is releasably locked in workpiece clamping position by a structure that includes a plurality of extensible links that are pivoted at one end to the movable jaw and at the other end to a handle. By manipulating the handle the links are moved to move the movable jaw into and out of locked clamping position. Each link is axially adjustable in length to lengthen or shorten it and includes a resilient portion to accommodate manufacturing variations or tolerances in the thickness of the sheet material being bent and to facilitate locking and unlocking of the sheet material.