Ring forging apparatus for forming and enlarging large rings

Details Ring forging apparatus for forming and enlarging large rings Ring forging apparatus for forming and enlarging large rings

1976-03-24

1978-02-14

Lanham, C. W.

Metal deforming

With means to drive tool

Including pneumatic- or fluid-actuated tool support

72455, 100258A, B21J 912

Patent

active

040731804

ABSTRACT:
Apparatus is provided for enlarging metal rings using a hydraulic press having a piston and anvil including a pair of generally parallel arms adapted to fit between the piston and anvil and be acted on intermediate their ends. The arms are maintained in a parallel relationship by a linkage arrangement. A pair of opposed work surfaces at one end of said parallel arms outside the press are adapted to receive a ring to be enlarged. A compensating hydraulic cylinder between the other ends of said parallel arms act between said ends to maintain said arms in parallel relationship with minimum pressure on said parallel linkage.

REFERENCES:
patent: 2221 (1841-08-01), Houpt
patent: 3247783 (1966-04-01), Hammon
patent: 3524405 (1970-08-01), Garrison
patent: 3884142 (1975-05-01), Jonsson

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