Sealing means for a coke oven chuck door

Abstract

A sealing means for a coke oven chuck door. The sealing means includes a metal sealing member which has springiness and flexibility and is supported cantilever fashion on the inside of the door frame. An insulation block is interposed between the sealing member and door frame. The sealing member has a knife edge flange which extends around its perimeter and is automatically aligned with a sealing surface on the main door on which the chuck door is mounted.

We claim: .Iadd..[.1. In a chuck door which includes a frame and a sealing member supported on said frame at the inside surface thereof, the improvement comprising 
       means providing a cantilever support for said sealing member on said frame; 
       said sealing member being of metal which provides springiness and flexibility and having a knife edge extending around its perimeter and being removable from said frame for replacement..]..Iaddend. .[.2. The apparatus as defined in claim 1 including insulating means forming part of said cantilever support means and minimizing transfer of heat from said sealing member to said frame..]. .Iadd..[.3. The apparatus as defined in claim 1 in which said sealing member is formed of a plurality of structural metal peices welded together to form a rectangle..]..Iaddend. .[.4. The apparatus as defined in claim 1 comprising in addition a plurality of pressure screws spaced around the perimeter of said frame and normally clearing said sealing member but being engageable therewith when localized damage occurs..]. .[.5. The apparatus as defined in claim 1 in which said sealing member is rectangular in outline and has a flange extending around its perimeter on which said knife edge is formed, said flange having a thickness at said knife edge of about 1/8 inch plus or minus about 1/32 inch and a thickness at its base about 1.5 times the thickness at said knife edge, the rectangular portion of said sealing member having a thickness of about 0.10 to about 0.15 inch..]. .[.6. In a chuck door which includes a frame and a sealing member supported on said frame at the inside surface thereof, the improvement comprising: 
       said sealing member being of rectangular outline having a flange extending around its perimeter and a knife edge on said flange; 
       said flange having a thickness at said knife edge of about 1/8 inch plus or minus about 1/32 inch and a thickness at its base about 1.5 times the thickness at its knife edges; 
       screw means at the central portion of said sealing member affixing said sealing member to said door frame, and 
       an insulating block interposed between said sealing member and said door frame to minimize transfer of heat therebetween; 
       said screw means and said block providing a cantilever support for said sealing member; 
       said sealing member being of a metal which provides springiness and flexibility and being removable from said frame for replacement..]. .Iadd.7. In a chuck door, said door including a frame and a substantially rectangular sealing member having a planar surface, said member also having a peripheral flange for mating with and extending inwardly toward a sealing surface for said door, the outward face of said member being mounted to said frame, the improvement in said chuck door which comprises: 
       said member being mounted to said frame to provide an intentional clearance for flexural movement of the sealing member flange both inwardly and outwardly, 
       said sealing member having a substantial opening in the center thereof, 
       first and second plates, centrally mounted on opposite sides of the planar surface of the sealing member, 
       said plates extending congruently around the opening in the sealing member and being joined thereto, 
       at least one of said plates closing said opening in the sealing member, the peripheral edges of said plates having an arcuate shape to provide uniform cantilever support along a continuous line for the arm formed by the planar surface of the sealing member, the length of said arm being significantly greater than said intentional clearance, 
       whereby, said sealing member has improved flexibility, providing automatic alignment of the flange thereof with the sealing surface for said chuck door. .Iaddend. .Iadd.8. The apparatus of claim 7 wherein said peripheral edges of the plates are of circular shape. .Iaddend.