Method of making skin covered rubber weatherstrip

Claim 1

A METHOD OF MINIMIZING SKIN STRETCH IN THE MOLDING AND VULCANIZING OF A SHEET OF SPONGE RUBBER COMPOUND SIMULTANEOUSLY WITH A SHEET OF UNCURED VULCANIZABLE SOLID RUBBER SKIN STOCK TO FORM INTEGRATED COMPONENT PARTS OF AN ULTIMATE RELATIVELY LONG AND NARROW ALL-RUBBER ARTICLE, WHICH COMPRISES THE STEPS OF, PLACING A SHEET OF SPONGE RUBBER COMPOUND IN FACE TO FACE CONTACT WITH A SHEET OF VULCANIZABLE SOLID RUBBER SKIN STOCK IN SPANNING RELATION TO THE ENTRACE MOUTH OF AN UNDERLYING MOLD CAVITY CONSIDERABLY WIDER THAN THE ULTIMATE ARTICLE TO BE PRODUCED AND WHOSE SIDE WALLS CONVERGE AND MEET AT A CHANNEL BOTTOM OF SAID CAVITY HAVING A CONTOUR PROPORTIONING SAID CAVITY TO BE SUBSTANTIALLY NO DEEPER THAN THE WIDTH OF SAID ENTRACE MOUTH, MECHANICALLY POKING SAID CAVITY SPANNING SHEETS IN UNISON TOWARD SAID CHANNEL BOTTOM IN A MANNER TO LOOP SAID SHEETS IN UNISON INTO NEIGHBORING RELATION TO SAID SIDE WALLS OF THE MOLD CAVITY WITH THE AID OF A PROTRUDING MOLD CORE SUFFICIENTLY SMALLER THAN SAID CAVITY TO ENABLE THE SIDES OF SAID CORE TO COOPERATE WITH SAID SIDE WALLS TO DEFINE END-TO-END COMMUNICATING SPACES BRANCHING APART FROM SAID CHANNEL BOTTOM TOWARD SAID MOUTH OF THE CAVITY, EACH OF SAID SPACES BEING EQUAL IN SHAPE AND SIZE TO SECTIONA PORTIONS OF THE WIDTH OF SAID ULTIMATE ARTICLE, IMPRISONING SAID SHEETS IN SAID SPACES, HEATING SAID SHEETS IN SAID SPACES TO A VULCANIZING TEMPERATURE SUFFICIENT TO BLOW SAID SPONGE RUBBER COMPOUND UNTIL EXPANSION THEREOF FORCES SAID SKIN STOCK INTO ALL-OVER CONFORMITY WITH SAID CAVITY WALLS AND CAUSES SAID COMPOUND TO FILL THE BALANCE OF SAID SPACES WHEREFORE TO FORM SAID SECTIONAL PORTIONS OF INTEGRATED VULCANIZED SPONGE RUBBER AND SOLID RUBBER SKIN IN END-TO-END CONJOINED ANGULARLY DIVERGING RELATION, REMOVING SAID SECTIONAL PORTIONS FROM THE MOLD, AND FOLDING AND BONDING SAID SECTIONAL PORTIONS INTO MUTUALLY OVERLAPPING JOINDURE TO CONSTITUTE THE ULTIMATE BODY TO BE PRODUCED.

Claim 2

A METHOD OF MINIMIZING SKIN STRETCH IN THE MOLDING AND VULCANIZING OF A SHEET OF SPONGE RUBBER COMPOUND SIMULTANEOUSLY WITH A SHEET OF UNCURED VULCANIZABLE SOLID RUBBER SKIN STOCK TO FORM INTEGRATED COMPONENT PARTS OF AN ULTIMATE RELATIVELY LONG AND NARROW ALL-RUBBER ARTICLE, WHICH COMPRISES THE STEPS OF, PLACING A SHEET OF SPONGE RUBBER COMPOUND IN FACE TO FACE CONTACT WITH A SHEET OF VULCANIZABLE SOLID RUBBER SKIN STOCK IN SPANNING RELATION TO THE ENTRACE MOUTH OF AN UNDERLYING MOLD CAVITY CONSIDERABLY WIDER THAN THE ULTIMATE ARTICLE TO BE PRODUCED AND WHOSE SIDE WALLS CONVERGE AND MEET AT A CHANNEL BOTTOM OF SAID CAVITY HAVING A CONTOUR PROPORTIONING SAID CAVITY TO BE SUBSTANTIALLY NO DEEPER THAN THE WIDTH OF SAID ENTRACE MOUTH, MECHANICALLY POKING SAID CAVITY SPANNING SHEETS IN UNISON TOWARD SAID CHANNEL BOTTOM IN A MANNER TO LOOP SAID SHEETS IN UNISON INTO NEIGHBORING RELATION TO SAID SIDE WALLS OF THE MOLD CAVITY WITH THE AID OF A PROTRUDING MOLD CORE SUFFICIENTLY SMALLER THAN SAID CAVITY TO ENABLE THE SIDES OF SAID CORE TO COOPERATE WITH SAID SIDE WALLS TO DEFINE END-TO-END COMMUNICATING SPACES BRANCHING APART FROM SAID CHANNEL BOTTOM TOWARD SAID MOUTH OF THE CAVITY, EACH OF SAID SPACES BEING EQUAL IN SHAPE AND SIZE TO SECTIONA PORTIONS OF THE WIDTH OF SAID ULTIMATE ARTICLE, IMPRISONING SAID SHEETS IN SAID SPACES, HEATING SAID SHEETS IN SAID SPACES TO A VULCANIZING TEMPERATURE SUFFICIENT TO BLOW SAID SPONGE RUBBER COMPOUND UNTIL EXPANSION THEREOF FORCES SAID SKIN STOCK INTO ALL-OVER CONFORMITY WITH SAID CAVITY WALLS AND CAUSES SAID COMPOUND TO FILL THE BALANCE OF SAID SPACES WHEREFORE TO FORM SAID SECTIONAL PORTIONS OF INTEGRATED VULCANIZED SPONGE RUBBER AND SOLID RUBBER SKIN IN END-TO-END CONJOINED ANGULARLY DIVERGING RELATION, REMOVING SAID SECTIONAL PORTIONS FROM THE MOLD, AND FOLDING AND BONDING SAID SECTIONAL PORTIONS INTO MUTUALLY OVERLAPPING JOINDURE TO CONSTITUTE THE ULTIMATE BODY TO BE PRODUCED.