Hydraulic shear

Claim 1

IN HYDRAULICALLY OPERATED SHEARS FOR CUTTING METAL AND THE LIKE, THE COMBINATION COMPRISING WALL STRUCTURE FORMING A TANK FOR RECEIVING THE HYDRAULIC FLUID FOR OPERATING THE SHEAR, A BOTTOM SHEAR ARM, MEANS FOR ATTACHING SAID SHEAR ARM TO THE TOP OF SAID TANK, SAID SHEAR ARM HAVING A PORTION PROJECTING OVER A SIDE OF SAID TANK, A CUTTING BLADE ATTACHED TO AID PROJECTING PORTION, A MOVABLE SHEAR ARM, A SHAFT EXTENDING THROUGH HOLES FORMED IN SAID BOTTOM SHEAR ARM AND IN SAID MOVABLE SHEAR ARM, ANTIFRICTION BEARING MEANS POSITIONED ON SAID SHAFT, SAID BEARING MENS COMPRISING A PAIR OF ROLLER BEARING ASSEMBLIES, EACH ASSEMBLY HAVING AN INNER RACE AND AN OUTER RACE WITH A PLURALITY OF ROLLER BEARINGS THEREBETWEEN, SAID HOLE IN ONE OF SAID ARMS BEING RECESSED TO FORM A HOUSING FOR SAID ROLLER BEARING MEANS, SAID HOUSING HAVING MEANS FOR CLAMPING SAID OUTER RACES OF SAID ROLLER BEARING ASSEMBLIES TO INNER SURFACES THEREOF, SAID MOVABLE SHEAR ARM ALSO HAVING A PORTION ADAPTED TO PROJECT OVER THE SIDE OF SAID TANK TO COOPERATE WITH THE PROJECTING PORTION OF SAID BOTTOM SHEAR ARM, A CUTTING BLADE ATTACHED TO THE PROJECTING PORTION OF SAID MOVABLE SHEAR ARM, HYDRAULICALLY OPERABLE MEANS ATTACHED TO SAID MOVABLE SHEAR ARM FOR ROTATING SAID MOVABLE SHEAR ARM ON SAID BEARING MEANS TO BRING SAID CUTTING BLADES TOWARD EACH OTHER IN A SHEARING OPERATION, A PUMP, A MOTOR FOR DRIVING SAID PUMP, MEANS FOR MOUNTING SAID PUMP AND SAID MOTOR ON SAID TANK SO THAT SAID PUMP IS POSITIONED INSIDE OF SAID TANK TO RECEIVE THE HYDRAULIC FLUID THEREFROM, A DIRECTIONAL VALVE HAVING