Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1989-06-05
1990-05-01
Jones, David
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
72380, B21D 908
Patent
active
049207806
ABSTRACT:
A rail bender designed for bending and/or straightening flat bottomed rails of various sizes. The bender consists of a double triangular frame, one angle of which is fitted with a center counter brace swivelable about a removable spindle. Two single action hydraulic rams are carried adjacent the other angles of the triangular frame with such rams provided with bending blocks that are swivelably fixed to the free ends of a threaded ram extender shaft fitted within each ram whereby each block is axially adjustable relative to the ram whereby such blocks are positionable against the head and base of the rails to be bent or straightened regardless of their size.
REFERENCES:
patent: 520876 (1894-06-01), Brown
patent: 630484 (1899-08-01), Brown
patent: 3908425 (1975-09-01), Ware
patent: 4141235 (1979-02-01), Ishihara
patent: 4254651 (1981-03-01), Kelly
patent: 4483175 (1984-11-01), Hansen
Jones David
The Aldon Company
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