Apparatus for opposing offset in printing

Claim 1

AN APPARATUS FOR OPPOSING OFFSET IN PRINTING COMPRISING A SUBSTANTIALLY RECTANGULAR SHAPED FRAME OF THE TYPE ADAPTED TO EXTEND TRANSVERSELY ABOVE A MOVING BED OF A PRINTING MACHINE CARRYING A FRESHLY PRINTED WEB AND PRINTED SHEETS, INCLUDING A HOPPER FOR POWDERED MATERIAL CARRIED BY SAID FRAME AND HAVING REAR, FRONT, BUTTON AND END WALLS, SAID BOTTOM WALL SLANTING FORWARDLY AND DOWNWARDLY FROM SAID REAR WALL AND TERMINATING IN SPACED RELATIONSHIP WITH SAID FRONT WALL FORMING AN ELONGATED RELATIVELY LARGE DISCHARGE OPENING, A ROLLER MOUNTED FOR COUNTER-CLOCKWISE ROTATION SUBSTANTIALLY CLOSING SAID OPENING AND IN SEALED RELATIONSHIP WITH THE END TERMINATION OF SAID BOTTOM WALL, A SUBSTANTIALLY RECTANGULAR SHAPED AIR CONDUIT HAVING FRONT, REAR, TOP AND BOTTOM WALLS CARRIED BY SAID FRAME, SAID BOTTOM WALL BEING SPACED FROM SAID REAR WALL TO PROVIDE AN ELONGATED AIR DISCHARGE OPENING ADJACENT WALL TO PROVIDE AN ELONGATED AIR DISCHARGE OPENBEING SO CONSTRUCTED AND ARRANGED AS TO FORM THE REAR WALL OF SAID AIR CONDUIT AND TERMINATING ABOVE THE PERIPHERAL SURFACE OF SAID ROLLER TO FORM A MATERIAL FEED GAP, MEANS ASSOCIATED WITH SAID AIR CONDUIT TO PROVIDE AN EVEN STEADY FLOW OF AIR THROUGH SAID AIR DISCHARGE OPENING AND TO IMPINGE UPON THE OUTER PERIPHERAL SURFACE OF SAID ROLLER, MEANS FOR ADJUSTING THE RELATIVE SIZE OF SAID AIR DISCHARGE OPENING, MEANS FOR ADJUSTING THE RELATIVE SIZE OF SAID MATERIAL FEED GAP, AND MEANS FOR INITIALLY ADJUSTING THE RELATIVE POSITION OF SAID AIR CONDUIT WITH RELATION TO SAID ROLLER, WHEREBY THE AMOUNT OF MATERIAL PICKED UP BY SAID ROLLER CAN BE CONTROLLED AND SEPARATED FROM THE ROLLER BY AIR IMPINGING DIRECTLY ON THE OUTER PERIPHERAL SURFACE THEREOF TO FALL IN A CONTROLLED VARIABLE CLOUD BELOW THE ROLLER AND UPON THE PRINTED SURFACE.

Claim 2

AN APPARATUS FOR OPPOSING OFFSET IN PRINTING COMPRISING A SUBSTANTIALLY RECTANGULAR SHAPED FRAME OF THE TYPE ADAPTED TO EXTEND TRANSVERSELY ABOVE A MOVING BED OF A PRINTING MACHINE CARRYING A FRESHLY PRINTED WEB AND PRINTED SHEETS, INCLUDING A HOPPER FOR POWDERED MATERIAL CARRIED BY SAID FRAME AND HAVING REAR, FRONT, BUTTON AND END WALLS, SAID BOTTOM WALL SLANTING FORWARDLY AND DOWNWARDLY FROM SAID REAR WALL AND TERMINATING IN SPACED RELATIONSHIP WITH SAID FRONT WALL FORMING AN ELONGATED RELATIVELY LARGE DISCHARGE OPENING, A ROLLER MOUNTED FOR COUNTER-CLOCKWISE ROTATION SUBSTANTIALLY CLOSING SAID OPENING AND IN SEALED RELATIONSHIP WITH THE END TERMINATION OF SAID BOTTOM WALL, A SUBSTANTIALLY RECTANGULAR SHAPED AIR CONDUIT HAVING FRONT, REAR, TOP AND BOTTOM WALLS CARRIED BY SAID FRAME, SAID BOTTOM WALL BEING SPACED FROM SAID REAR WALL TO PROVIDE AN ELONGATED AIR DISCHARGE OPENING ADJACENT WALL TO PROVIDE AN ELONGATED AIR DISCHARGE OPENBEING SO CONSTRUCTED AND ARRANGED AS TO FORM THE REAR WALL OF SAID AIR CONDUIT AND TERMINATING ABOVE THE PERIPHERAL SURFACE OF SAID ROLLER TO FORM A MATERIAL FEED GAP, MEANS ASSOCIATED WITH SAID AIR CONDUIT TO PROVIDE AN EVEN STEADY FLOW OF AIR THROUGH SAID AIR DISCHARGE OPENING AND TO IMPINGE UPON THE OUTER PERIPHERAL SURFACE OF SAID ROLLER, MEANS FOR ADJUSTING THE RELATIVE SIZE OF SAID AIR DISCHARGE OPENING, MEANS FOR ADJUSTING THE RELATIVE SIZE OF SAID MATERIAL FEED GAP, AND MEANS FOR INITIALLY ADJUSTING THE RELATIVE POSITION OF SAID AIR CONDUIT WITH RELATION TO SAID ROLLER, WHEREBY THE AMOUNT OF MATERIAL PICKED UP BY SAID ROLLER CAN BE CONTROLLED AND SEPARATED FROM THE ROLLER BY AIR IMPINGING DIRECTLY ON THE OUTER PERIPHERAL SURFACE THEREOF TO FALL IN A CONTROLLED VARIABLE CLOUD BELOW THE ROLLER AND UPON THE PRINTED SURFACE.