Gas burner

Claim 1

A GAS BURNER HAVING, IN COMBINATION, A DISHED CASING HAVING AN OPENING AT ONE SIDE DEFINED BY AN AXIALLY FACING SHOULDER SURROUNDED BY A CONTINUOUS PERIPHERAL FLANGE, A BURNER PLATE RECEIVED IN THE RECESS DEFINED BY SAID SHOULDER AND FLANGE WALL AND HAVING TRANSVERSE PASSAGES FOR PASSING THERETHROUGH GAS DELIVERED UNDER PRESSURE INTO SAID CASING FOR BURNING AT THE OTHER FACE OF THE PLATE, SAID CASING BEING COMPOSED OF MATERIAL HAVING A COEFFICIENT OF THERMAL EXPANSION SUBSTANTIALLY GREATER THAN THAT OF SAID PLAE, A GASKET RING COVERING SAID SHOULDER AND CEMENTED ON ONE SIDE TO THE SHOULDER AND ON THE OTHER SIDE TO THE BACK OF SAID PLATE, AND FILLING OF HIGH TEMPERATURE REFRACTORY CEMENT DISPOSED IN THE SPACE BETWEEN SAID FLANGE WALL AND THE PERIPHERAL EDGE OF SAID PLATE AND BONDED TO SAID WALL AND THE EDGE SURFACE OF THE PLATE, SAID GASKET RING BEING COMPOSED OF CERAMIC FIBER PAPER ADAPTED TO ACCOMMODATE THE RELATIVE EDGEWISE SHIFTING OF SAID PLATE AND SHOULDER INCIDENT TO TEMPERATURE CHANGES WHEREBY TO SEAL THE JOINT BETWEEN THE CASING AND PLATE AGAINST THE ESCAPE OF GAS THERETHROUGH UNDER THE CHANGING TEMPERATURE CONDITION OCCURRING IN SERVICE USE OF THE BURNER.