Heavy duty shear

Details Heavy duty shear Heavy duty shear

1974-01-11

1976-07-13

Meister, J. M.

Cutting

Means to drive or to guide tool

Constantly urged tool or tool support

83632, 83635, 83639, 83640, B26D 512

Patent

active

039687147

ABSTRACT:
A shear comprising a frame, a fixed blade, a movable blade cooperating with the fixed blade to cut sheet material disposed therebetween, a hydraulic power cylinder for moving the movable blade upwardly and downwardly past the fixed blade, a lever for drivingly connecting the power cylinder to the movable blade, the lever being pivotally mounted upon the frame to provide oppositely extending lever portions, one pivotally connected to the movable blade and the other pivotally connected to the ram of the power cylinder, a roller journal mounted upon brackets to extend across the frame with the brackets selectively adjustably movable to position the roller, and springs for yieldably urging the movable blade against the roller. The power cylinder is controlled by a linkage and lever mechanism which moves the control member of a valve in response to the movement of a foot pedal as well as the movement of the lever which drivingly connects the power cylinder to the movable blade.

REFERENCES:
patent: 2645287 (1953-07-01), Munchauer
patent: 3242786 (1966-03-01), Giordano
patent: 3371569 (1968-03-01), Pearson

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