Seal assembly in combination with a shaft mounted roller

Claim 1

IN COMBINATION WITH A ROTATABLE ROLLER OR THE LIKE HAVING A BEARING OPENING AND A SUPPORTING SHAFT HAVING MEANS FOR SECURING A BEARING THEREIN, A CIRCULAR CONCAVE SHIELD HAVING A BASE MOUNTED ON SAID MEANS AND SPACED FROM SAID END OF THE ROLLER WITH THE CONCAVE SIDE OF THE SHIELD FACING AND OVERLYING THE BEARING OPENING, AND OPPOSITE ANNULAR, NORMALLY FLAT, RESILIENT, FLEXIBLE WIPING ELEMENTS HAVING INTERMEDIATE SUPPORTING MEANS MOUNTED IN THE BEARING OPENING AND SUPPORTED BY THE ROLLER WITHIN THE SHIELD WITH THE OUTER PERIPHERY OF THE OUTER ELEMENT ENGAGING THE CONCAVE SIDE OF THE SHIELD AT OR NEAR THE PERIPHERY THEREOF AND THE OPPOSITE INNER ELEMENT ENGAGING THE BASE OF THE SHIELD, SAID ELEMENTS BEING FLEXED IN THE SAME DIRECTION BY SAID FIRST NAMED MEANS WHEREBY THE INNER ELEMENT SERVES TO RETAIN LUBRICANT IN THE BEARING OPENING AND THE OUTER ELEMENT SERVES TO CLOSE THE BEARING OPENING, THE AXIAL ADJUSTMENT OF SAID SHIELD AND ITS BASE ON SAID SHAFT IN SAID DIRECTION IN EFFECTING THE COMPRESSION OF THE OUTER ELEMENT AND EXPANSION OF THE INNER ELEMENT ALSO PROVIDING THE DESIRED WIPING PRESSURES OF THE RESPECTIVE SEALS.