Self-sealing coke oven door

Claim 1

IN MAINTAINING A GAS TIGHT SEAL BETWEEN AN OUTER METALLIC DOOR-BODY PORTION OF A COKE OVEN DOOR AND THE OUTWARDLY FACING SEALING SURFACE OF A METALLIC COKE OVEN DOOR-FRAME SURROUNDING A DOOR-WAY INTO WHICH AN INNER PORTION OF SAID DOOR NORMALLY EXTENDS, BY THE USE OF A SEALING MEMBER IN THE FORM OF A CONTINUOUS BAND OF STRIP METAL SUPPORTED BY SAID DOOR BODY AND HAVING FLAT INNER AND OUTER SIDES TRANSVERSE TO SAID SEALING SURFACE AND HAVING AN INNER SEALING EDGE NORMALLY IN ENGAGEMENT WITH SAID SEALING SURFACE, AND HAVING SAID INNER SIDE IN CONTACT WITH AN ABUTTING BEARING SURFACE OF SAID METALLIC DOOR BODY PORTION, THE METHOD WHICH CONSISTS IN APPLYING FORCE TO THE OUTER SIDE OF SAID BAND TO NORMALLY HOLD THE INNER SIDE OF SAID BAND IN FIXED FRICTIONAL ENGAGEMENT WITH SAID BEARING SURFACE TO THEREBY PREVENT SLIDING MOVEMENT OF SAID BAND RELATIVE TO SAID ABUTTING SURFACE, AND APPLYING TO THE OUTER EDGE OF SAID SEALING MEMBER AT A POINT ALONG THE LENGTH OF THE SAID OUTER EDGE WHICH IS DISPLACED FROM SAID SEALING SURFACE BY A DISTANCE GREATER THAN THE DISTANCE BETWEEN SAID POINT AND THE INNER EDGE OF THE SEALING MEMBER A DISTORTING FORCE PRODUCED BY THE WEIGHT AND IMPACT VELOCITY OF A BODY IMPACTING AGAINST SAID OUTER EDGE, SAID SEALING MEMBER BEING NORMALLY HELD IN SEALING ENGAGEMENT WITH SAID SEALING SURFACE SUBSTANTIALLY ENTIRELY BY THE FRICTIONAL CONTACT BETWEEN THE INNER SIDE OF SAID SEALING MEMBER AND THE ADJACENT SURFACE OF THE DOOR.