Junction pieces for tube elements

Claim 1

A METHOD OF FORGING A BREECHES MEMBER FOR JOINING A TUBE TO A PLURALITY OF PARALLEL TUBES COMPRISING, PROVIDING A STEEL CYLINDER HAVING ONE END OPEN AND A BOTTOM THICKER THAN THE SIDE WALLS THEREOF, SAID BOTTOM HAVING A PLURALITY OF SPACED HOLES, SAID SIDE WALLS DEFINING A CONDUIT, HEATING SAID STEEL CYLINER TO FORGING TEMPERATURE, HOLDING SAID CYLINDER IN A HEATED CONDITION IN A DIE CONFINING SAID SIDE WALLS CIRCUMFERENTIALLY AND AXIALLY AND HAVING A BOTTOM PROVIDED WITH BOTTOM APERTURES OF GREATER DIAMETER THAN SIAD HOLES AND IN REGISTRY WITH SAID HOLES IN SAID CYLINDER, FORGING A PLURALITY OF TUBULAR EXTENSIONS ON SAID CYLINDER BOTOM BY INSERTING AXIALLY INTO SAID CYLINDER A PIERCING DIE TO COMPACT AND TO SHAPE SAID SIDE WALLS ON SAID DIES AND HAVING PARALLEL MULTIPLE PUNCHES AXIALLY INSERTED INTO SAID CYLINDER HOLES THEREBY TO FORGE A PLURALITY OF SAPCED, PARALLEL, TUBULAR EXTENSIONS ON SAID CYLINDER BOTTOM FOR CONNECTING A PLURALITY OF PARALLEL TUBES THERETO, THE SIDE WALLS OF SAID CYLINDER DEFINING SAID CONDUIT AS A SINGLE COUPLING CONDUIT END PORTION HVIANG WALLS OF SUBSTANTIALLY EQUAL THICKNESS AND OF COMPACTED, GRAIN-ORIENTED MATERIAL AND DISPOSED OPPOSITE TO SAID TUBULAR EXTENSIONS AND IN COMMUNICATION THEREWITH, AND REMOVING THE FORMED BREECHES MEMBER FROM THE DIES.

Claim 2

A METHOD OF FORGING A BREECHES MEMBER FOR JOINING A TUBE TO A PLURALITY OF PARALLEL TUBES COMPRISING, PROVIDING A STEEL CYLINDER HAVING ONE END OPEN AND A BOTTOM THICKER THAN THE SIDE WALLS THEREOF, SAID BOTTOM HAVING A PLURALITY OF SPACED HOLES, SAID SIDE WALLS DEFINING A CONDUIT, HEATING SAID STEEL CYLINER TO FORGING TEMPERATURE, HOLDING SAID CYLINDER IN A HEATED CONDITION IN A DIE CONFINING SAID SIDE WALLS CIRCUMFERENTIALLY AND AXIALLY AND HAVING A BOTTOM PROVIDED WITH BOTTOM APERTURES OF GREATER DIAMETER THAN SIAD HOLES AND IN REGISTRY WITH SAID HOLES IN SAID CYLINDER, FORGING A PLURALITY OF TUBULAR EXTENSIONS ON SAID CYLINDER BOTOM BY INSERTING AXIALLY INTO SAID CYLINDER A PIERCING DIE TO COMPACT AND TO SHAPE SAID SIDE WALLS ON SAID DIES AND HAVING PARALLEL MULTIPLE PUNCHES AXIALLY INSERTED INTO SAID CYLINDER HOLES THEREBY TO FORGE A PLURALITY OF SAPCED, PARALLEL, TUBULAR EXTENSIONS ON SAID CYLINDER BOTTOM FOR CONNECTING A PLURALITY OF PARALLEL TUBES THERETO, THE SIDE WALLS OF SAID CYLINDER DEFINING SAID CONDUIT AS A SINGLE COUPLING CONDUIT END PORTION HVIANG WALLS OF SUBSTANTIALLY EQUAL THICKNESS AND OF COMPACTED, GRAIN-ORIENTED MATERIAL AND DISPOSED OPPOSITE TO SAID TUBULAR EXTENSIONS AND IN COMMUNICATION THEREWITH, AND REMOVING THE FORMED BREECHES MEMBER FROM THE DIES.