Headbox for paper-making machine

Claim 1

IN APPARATUS ADAPTED FRO MINIMIZING FLOCCING AND FOR INCREASING DISPERSION OF FIBERS IN PAPERMAKING FURNISH PRIOR TO DELIVERY THEREOF TO A WEB FORMING MEANS OF A PAPERMAKING MACHINE COMPRISING A FLOW VESSEL DEFINING A FURNISH FLOW PATH, AN INLET TO THE FLOW VESSEL FOR INTRODUCTION OF FURNISH UNDER PRESSURE ALONG THE FLOW PATH, AN OUTLET OF THE VESSEL FOR DELIVERING FURNISH TO WEB FORMING MEANS OF A PAPERMAKING MACHINE, AN ARCUALTELY SHAPED PLATE IN THE VESSEL ADAJCENT THE OUTLET AND EXTENDING TRANSVERSELY TO THE DIRECTION OF FLOW OF FURNISH, MEANS DEFINING PERFORATIONS IN A PORTION OF THE PLATE POSITIONED FOR FLOW OF FURNISH TO THE OUTLET, A REJECT OUTLET FOR DISCHARGE OF TAILINGS, LUMPS AND AGGLOMERATIONS FROM THE VESSEL, AND A ROTATABLE MEMBER OF GENERALLY AERODYNAMIC CONFIGURATION IN CROSS-SECTION DISPOSED IN THE VESSEL BETWEEN SAID ARCUATE PLATE AND THE INLET TO THE FLOW VESSEL AND IN THE FLOW PATH OF THE FURNISHED FOR URGING FURNISH TOWARD AND AWAY FROM THE PERFORATED PORTION OF THE PLATE, THE IMPROVEMENT COMPRISING MEANS DEFINING A TRANSVERSE INLET SLOT AT ONE EDGE OF THE PLATE EXTENDING THE FULL WIDTH OF THE PLATE POSITIONED FOR TANGENTIALLY INTRODUCTING THE FURNISHED TO THE SUPPLY SIDE OF THE PLATE.