Andrew L Walters

US Patent:

39396860, Feb 24, 1976

Filed:

Jul 15, 1974

Appl. No.:

5/488792

Inventors:

Andrew C. Walters - Dallas TX
William M. Goss - Richardson TX

Assignee:

Fabco, Incorporated - Lewisville TX

International Classification:

B21D 706

US Classification:

72441

Abstract:

A wedge actuated cutting and/or forming tool comprises a frame including spaced guide portions. A fixed platen is mounted on the frame and a movable platen is mounted on the guide portions of the frame for reciprocation toward and away from the fixed platen. A wedge is supported for lateral reciprocation with respect to a backup and thereby effects reciprocation of the movable platen. The wedge is driven by a hydraulic cylinder and switch means are provided for regulating both the separation between the movable platen and the fixed platen at the closest point and the total stroke of the movable platen. The frame further includes a hydraulic reservoir which receives a substantial quantity of hydraulic fluid. By this means the structure of the reservoir and the hydraulic fluid therein tend to stabalize the tool and dampen vibrations caused by the operation thereof.

US Patent:

39330702, Jan 20, 1976

Filed:

Feb 9, 1973

Appl. No.:

5/331237

Inventors:

Andrew C. Walters - Dallas TX
William M. Goss - Richardson TX

Assignee:

Fabco, Incorporated - Lewisville TX

International Classification:

B26D 508
B26D 512

US Classification:

83529

Abstract:

A wedge actuated cutting and/or forming tool comprises a frame including spaced guide portions. A fixed platen is mounted on the frame and a movable platen is mounted on the guide portions of the frame for reciprocation toward and away from the fixed platen. A wedge is supported for lateral reciprocation with respect to a backup and thereby effects reciprocation of the movable platen. The wedge is driven by a hydraulic cylinder and switch means are provided for regulating both the separation between the movable platen and the fixed platen at the closest point and the total stroke of the movable platen. The frame further includes a hydraulic reservoir which receives a substantial quantity of hydraulic fluid. By this means the structure of the reservoir and the hydraulic fluid therein tend to stabilize the tool and dampen vibrations caused by the operation thereof.