Device for annealing workpieces

Claim 1

A DEVICE FOR ANNEALING WORKPIECES IN A FURNACE UNDER A SELECTED GASEOUS MEDIUM WITHOUT EXPOSING THEM TO ATMOSPHERE, COMPRISING: (A) A CONTINUOUS WALL OUTER HOUSING OF UNIFORM CROSSSECTION DISPOSED IN SAID FURNACE AND WHICH HAS ONE CLOSED END AND ONE OPEN END; (B) A COVER PLATE WHICH IS FITTED OVER SAID OPEN END OF SAID OUTER HOUSING AND HAS A PERIPHERY SLIGHTLY SPACED FROM THE WALL OF SAID OUTER HOUSING; (C) A SEALING MEDIUM INTERPOSED BETWEEN THE OUTER HOUSING ADJACENT SAID ONE OPEN END AND THE PERIPHERY OF SAID COVER PLATE; (D) A VENT SLEEVE RIGIDLY CONNECTED TO SAID COVER PLATE AND WHICH EXTENDS UP AND OUT OF SAID FURNACE; (E) AN INNER HOUSING WITHIN SAID OUTER HOUSING WHICH HAS AN INNER CASING AND AN OUTER CASING, BOTH OF SIMILAR CROSS-SECTION, SAID CASINGS BEING CONTINUOUS CLOSED WALLS CONCENTRICALLY DISPOSED IN SPACED RELATION TO EACH OTHER; (F) BOTH SAID INNER CASING AND SAID OUTER CASING BEING OPEN AT THE SAME ONE END AND THE OTHER ENDS THEREOF BEING CLOSED BY AN INNER HOUSING TOP PLATE WHICH IS INTEGRAL THEREWITH AND IS SLIGHTLY SPACED FROM SAID COVER PLATE; (G) THE OUTER CASING OF SAID INNER HOUSING BEING SPACED A SMALL DISTANCE FROM SAID OUTER HOUSING AND THE INNER CASING OF SAID INNER HOUSING ENCLOSING A WORKPIECE POSITIONED THEREIN; (H) A GAS SUPPLY PIPE IN SAID VENT SLEEVE WHICH EXTENDS DOWN INTO SAID INNER HOUSING THROUGH SAID INNER HOUSING TOP PLATE AND TO WHICH IT IS RIGIDLY CONNECTED; (I) SAID INNER HOUSING WALLS AT THEIR OPEN END BEING SPACED FROM SAID CLOSED END OF SAID OUTER HOUSING; (J) AN INTERMEDIATE CLOSED WALL BAFFLE HOUSING DISPOSED BETWEEN SAID CONCENTRIC SPACED WALLS OF SAID INNER HOUSING IN SPACED RELATION THERETO AND HAVING ONE END IN ENGAGEMENT WITH SAID CLOSED END OF SAID OUTER HOUSING WALL AND HAVING ITS OTHER END OPEN AND SPACED FROM SAID TOP PLATE, ALL OF SAID WALLS THEREBY FORMING A TORTUOUS PATH FOR FLOW OF GASS FROM THE INTERIOR TO THE EXTERIOR OF SAID INNER HOUSING AND; (K) A PURIFYING FILTER INTEGRALLY CONNECTED WITH SAID INNER WALL OF SAID INNER HOUSING AND DISPOSED BETWEEN SAID GASS SUPPLY PIPE AND SAID GAS SUPPLY PIPE AND THAT ALL GAS MUST PASS FROM SAID GAS SUPPLY PIPE AND THROUGH SAID FILTER BEFORE REACHING SAID WORKPIECE.

Claim 2

A DEVICE FOR ANNEALING WORKPIECES IN A FURNACE UNDER A SELECTED GASEOUS MEDIUM WITHOUT EXPOSING THEM TO ATMOSPHERE, COMPRISING: (A) A CONTINUOUS WALL OUTER HOUSING OF UNIFORM CROSSSECTION DISPOSED IN SAID FURNACE AND WHICH HAS ONE CLOSED END AND ONE OPEN END; (B) A COVER PLATE WHICH IS FITTED OVER SAID OPEN END OF SAID OUTER HOUSING AND HAS A PERIPHERY SLIGHTLY SPACED FROM THE WALL OF SAID OUTER HOUSING; (C) A SEALING MEDIUM INTERPOSED BETWEEN THE OUTER HOUSING ADJACENT SAID ONE OPEN END AND THE PERIPHERY OF SAID COVER PLATE; (D) A VENT SLEEVE RIGIDLY CONNECTED TO SAID COVER PLATE AND WHICH EXTENDS UP AND OUT OF SAID FURNACE; (E) AN INNER HOUSING WITHIN SAID OUTER HOUSING WHICH HAS AN INNER CASING AND AN OUTER CASING, BOTH OF SIMILAR CROSS-SECTION, SAID CASINGS BEING CONTINUOUS CLOSED WALLS CONCENTRICALLY DISPOSED IN SPACED RELATION TO EACH OTHER; (F) BOTH SAID INNER CASING AND SAID OUTER CASING BEING OPEN AT THE SAME ONE END AND THE OTHER ENDS THEREOF BEING CLOSED BY AN INNER HOUSING TOP PLATE WHICH IS INTEGRAL THEREWITH AND IS SLIGHTLY SPACED FROM SAID COVER PLATE; (G) THE OUTER CASING OF SAID INNER HOUSING BEING SPACED A SMALL DISTANCE FROM SAID OUTER HOUSING AND THE INNER CASING OF SAID INNER HOUSING ENCLOSING A WORKPIECE POSITIONED THEREIN; (H) A GAS SUPPLY PIPE IN SAID VENT SLEEVE WHICH EXTENDS DOWN INTO SAID INNER HOUSING THROUGH SAID INNER HOUSING TOP PLATE AND TO WHICH IT IS RIGIDLY CONNECTED; (I) SAID INNER HOUSING WALLS AT THEIR OPEN END BEING SPACED FROM SAID CLOSED END OF SAID OUTER HOUSING; (J) AN INTERMEDIATE CLOSED WALL BAFFLE HOUSING DISPOSED BETWEEN SAID CONCENTRIC SPACED WALLS OF SAID INNER HOUSING IN SPACED RELATION THERETO AND HAVING ONE END IN ENGAGEMENT WITH SAID CLOSED END OF SAID OUTER HOUSING WALL AND HAVING ITS OTHER END OPEN AND SPACED FROM SAID TOP PLATE, ALL OF SAID WALLS THEREBY FORMING A TORTUOUS PATH FOR FLOW OF GASS FROM THE INTERIOR TO THE EXTERIOR OF SAID INNER HOUSING AND; (K) A PURIFYING FILTER INTEGRALLY CONNECTED WITH SAID INNER WALL OF SAID INNER HOUSING AND DISPOSED BETWEEN SAID GASS SUPPLY PIPE AND SAID GAS SUPPLY PIPE AND THAT ALL GAS MUST PASS FROM SAID GAS SUPPLY PIPE AND THROUGH SAID FILTER BEFORE REACHING SAID WORKPIECE.