Rotary crop shear knives and the like

Claim 1

A ROTARY SHEAR KNIFE ASSEMBLY AND THE LIKE OF METAL WORK, COMPRISING, IN COMBINATION, A PAIR OF ROTATABLE DRUMS HAVING PARALLEL AXES, SAID DRUMS BEING SPACED APART AT THE BITE THROUGH WHICH A PASS LINE FOR FLAT METAL WORK PASSES, THE PLANE OF SAID DRUMS HAVING A TRANSVERSE GROOVE SAID AXES, EACH OF SAID DRUMS HAVING A TRANSVERSE GROOVE IN THE SURFACE THEREOF FOR THE MOUNTING THEREIN OF A CHEVRON KNIFE, ONE OF SAID KNIVES BEING AN INTERIOR CHEVRON AND THE OTHER OF SAID KNIVES BEING AN EXTERIOR CHEVRON ADAPTED TO COACT WITH ONE ANOTHER TO SHEAR METAL WORK PASSING ALONG SAID PASS LINE, SAID CHEVRON KNIVES HAVING THEIR APICES IN LONGITUDINAL CORRESPONDENCE WITH THE CENTER LINE OF WORK PASSING ALONG SAID PASS LINE, THE CUTTING EDGES OF SAID RESPECTIVE KNIVES BEING LONGITUDINALLY SPACED FOR CLEARANCE AND RADIALLY OVERLAPPED TO PASS THROUGH SAID BITE IN JUXTAPOSED RELATION WITHOUT ENGAGEMENT, SAID CUTTING EDGES BEING STRAIGHT FROM THEIR APICES TO THEIR OUTER ENDS AND CONTINUOUS FROM ONE OUTER END TO THE OTHER, RESPECTIVELY.