Portal press

Details Portal press Portal press

1974-02-14

1976-01-13

Lanham, C. W.

Metal deforming

With tool carrier

72447, 72453, 100214, B21J 1304

Patent

active

039317285

ABSTRACT:
In a hydraulic press for heavy workpieces the frame of which comprises two yokes spaced by columns, the yokes are movable towards and from each other by the hydraulic working cylinders of the press. At least one of the yokes carries tools displaceable along the yoke. The arrangement makes it possible for the tools to work on every portion of a workpiece filling out the entire space between the columns, yet the cylinders are fixed relatively to the yoke carrying them which eliminates the need for flexible connections for the hydraulic medium.

REFERENCES:
patent: 1137132 (1915-04-01), Gross
patent: 1585212 (1926-05-01), Schranz
patent: 2376853 (1945-05-01), Miller
patent: 3024676 (1962-03-01), Howahr
patent: 3134350 (1964-05-01), Danly
patent: 3427854 (1969-02-01), Michelson
patent: 3508429 (1970-04-01), Staples
patent: 3717024 (1973-02-01), Davison
patent: 3747393 (1973-07-01), Robra

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