Self-sealing coke oven doors

Claim 1

IN A COKE OVEN BATTERY HAVING A PERIPHERAL WALL AND A PLURALITY OF SPACED HEATING WALLSWITH COKING CHAMBERS THEREBETWEEN, SAID PERIPHERAL WALL HAVING A PLURALITY OF OPENING PROVIDEING ACCESS TO SAID COKING CHAMBERS, AND A DOOR FRAME FIXED TO SAID PERIPHERAL WALL AND SURROUNDING ONE OF SAID WALL OPENINGS AND BEING PROVIDED WITH A SEALING SURFACE; A DOOR FOR OPERABLY CLOSING SAID ONE PERIPHERAL WALL OPENING, COMPRISING A DOOR BODY, A SEALING STRIP EXTENDING AROUND THE PERIPHERAL EDGE OF SAID DOOR BODY IN SURFACE-TO-SURFACE RELATIONSHIP THEREWITH AND DISPOSED IN PLANES SUBSTANTIALLY PERPENDICULAR TO THE PLANE OF SAID SEALING SURFACE, SAID SEALING STRIP BEING DIVIDED INTO TWO STRIP PORTIONS IN SUBSTANTIAL ABUTTING EDGE-TO EDGE RELATIONSHIP WITH THE FREE EDGE OF ONE OF SAID STRIP PORTIONS BEING ADAPTED TO ENGAGE SAID SEALING SURFACE OF SAID DOOR FRAME IN SEALING RELATION THEREWITH, THE PLANE OF ABUTMENT OF SAID ABUTTING EDGES OF SAID SEALING STRIP PORTIONS BEING AT AN ANGLE TO THE PLANES IN WHICH SAID SEALING STRIP IS DISPOSED, AND MEANS FOR CLAMPING BOTH SAID SEALING STRIP PORTIONS AGAINST THE PERIPHERAL EDGE OF SAID DOOR BODY.