Resilient roller bearing adapter

Claim 1

IN COMBINATION WITH A RAILWAY TRUCK FRAME HAVING SPACED PEDESTAL JAWS WITH A ROOF EXTENDING LONGITUDINALLY BETWEEN THE UPPER ENDS OF THE JAWS, SAID ROOF HAVING A DOWNWARDLY PRESENTED LOAD CARRYING SURFACE, THE WIDTH OF THE ROOF VARYING SUBSTANTIALLY FROM FRAME TO FRAME, AND A RAILWAY CAR JOURNAL HAVING A ROLLER BEARING BETWEEN THE PEDESTAL JAWS, AN ADAPTER CAP PLATE ABOVE AND ANCHORED TO THE ROLLER BEARING, SAID CAP PLATE HAVING AN UPWARDLY PRESENTED LOAD RECEIVING SURFACE SPACED BELOW THE LOAD CARRYING SURFACE, COOPERATING STOPS BETWEEN THE CAP PLATE AND THE PEDESTAL JAWS PROVIDING FOR END PLAY OF THE ROLLER BEARING RELATIVE TO THE PEDESTAL JAWS, A TOP PLATE SPACED ABOVE THE CAP PLATE AND BELOW THE ROOF, SAID TOP PLATE HAVING AN UPPER SURFACE PRESENTED TO SAID LOAD CARRYING SURFACE AND A LOWER SURFACE PRESENTED TO SAID LOAD RECEIVING SURFACE, AND BODY OF ELASTOMER SANDWICHED BETWEEN THE LOWER SURFACE OF THE TOP PLATE AND THE UPWARDLY PRESENTED SURFACE OF THE CAP PLATE FOR TRANSMITTING LOAD FROM THE ROOF TO THE CAP PLATE AND FOR ACCOMMODATING END PLAY OF THE ROLLER BEARING, SAID TOP PLATE HAVING DOWNWARDLY CONVERGING LONGITUDINALLY EXTENDING RIBS OF ELASTOMER STRADDLING THE ROOF WITH AN INTERMEDIATE PORTION THEREOF ENGAGING THE EDGES OF THE ROOF AND WEDGING THE ROOF TOWARD THE CENTER OF THE TOP PLATE, THE SPACE BETWEEN THE LOWER ENDS OF SAID INTERMEDIATED PORTIONS OF THE RIBS BEING TO OR LESS THE MINIMUM WIDTH OF THE ROOF AND THE SPACE BETWEEN THE UPPER ENDS OF SAID INTERMEDIATE PORTION OF THE RIBS EQUAL TO OR GREATER THAN THE MAXIMUM WIDTH OF THE ROOF.