Hydraulic presses, notably for shearing and cutting materials

Details Hydraulic presses, notably for shearing and cutting materials Hydraulic presses, notably for shearing and cutting materials

1976-08-30

1977-05-10

Schran, Donald R.

Cutting

Means to drive or to guide tool

With simple rectilinear reciprocating motion only

83639, 83554, 100 48, 100269R, B26D 512, B30B 132

Patent

active

040220966

ABSTRACT:
Hydraulic press for performing shearing, cutting and bloom-compression operations comprising a pressure-fluid accumulator operatively connected to the working chamber of the main piston having its rod rigid with a slide member coupled via linkage means and a bell-crank lever to the longitudinal stem of a spool valve movable in a spool valve chamber communicating via a first port to the fluid reservoir, via a second port to the accumulator and via a third port to the pressure chamber of the main piston.

REFERENCES:
patent: 3388168 (1975-06-01), Kent et al.
patent: 3827328 (1974-08-01), La Flamme et al.
patent: 3908496 (1975-09-01), Moelbert

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