Cutting – With work immobilizer – Means to clamp work
Patent
1985-08-30
1987-01-27
Meister, James M.
Cutting
With work immobilizer
Means to clamp work
83461, 83466, 83564, 269 71, B23D 2300
Patent
active
046386998
ABSTRACT:
A shear for cutting profile and/or flat and/or solid-section steel has at least one vertical frame plate having a front face and a back face and formed with a throughgoing workpiece window, at least one fixed blade carried on the plate at the window, a working slide displaceable on the back face of the frame plate and carrying a movable blade passing past the fixed blade on movement of the slide on the frame plate, a generally flat holddown plate carrying a holddown element, and a pivot supporting the holddown plate on the frame plate for movement parallel to the frame plate and about a horizontal axis generally perpendicular to the frame plate between a raised position and a lowered position, and for movement also about a vertical axis between a use position lying against the front face of the frame plate and a service position extending transversely therefrom. Clamps secure the holddown plate in the use position against the frame plate with limited pivoting about the horizontal axis only. An actuator braced between the frame plate and the holddown plate in the use position of same pivots same limitedly about the horizontal axis and thereby presses the holddown element against a workpiece engaged through the window.
REFERENCES:
patent: 4236430 (1980-12-01), Hitt
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