Rectangular metal-tubing bender

Details Rectangular metal-tubing bender Rectangular metal-tubing bender

1974-12-03

1976-06-22

Lanham, C.W.

Metal deforming

By relatively movable offset tool-faces

Embodying three or more coacting relatively movable tools

72369, 72399, B21D 502

Patent

active

039642895

ABSTRACT:
A rectangular tubing bender having a frame provided with an arrangement for locking in place a tube to be bent. Structure on the frame forms directly opposed depressions on opposite sides of the rectangular tube prior to bending of the tube adjacent the depressions for permitting a completely closed and square bend to be formed. The locking arrangement may be mounted on a carriage movable on the frame for bending the tube by moving same against a stationary forming point member subsequent to the formation of the depressions in the tube. Cam operated rockers are advantageously employed to form the depressions.

REFERENCES:
patent: 1816218 (1931-07-01), Henry et al.
patent: 2148748 (1939-02-01), Hardy
patent: 2285275 (1942-06-01), Harder
patent: 2516372 (1950-07-01), Cross
patent: 2835306 (1958-05-01), Fuchs
patent: 3042099 (1962-07-01), Neely
patent: 3073372 (1963-01-01), Lang
patent: 3240048 (1966-03-01), Callendar
patent: 3348402 (1967-10-01), Reistad
patent: 3472056 (1969-10-01), Gregg

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