Method of making fluid conducting elements

Claim 1

THE METHOD OF MAKING THROUGH THE MEDIUM OF CAST BILLETS THIN GAUGE FLAT-FACED STRIPS OF ONE OF THE NONFERROUS MALLEABLE METALS SELECTED FROM THE GROUP CONSISTING OF COPPER, ALUMINUM, AND ZINC IN LENGTHS INCLUDING GREAT LENGTHS UP TO HUNDREDS OF FEET AND HAVING THROUGHOUT THE LENGTHS INTERNAL LONGITUDINAL PARALLEL SLITS INFLATABLE TO FORM SMOOTH-WALLED TUBULAR PASSAGES IN THE METAL STRIP, WHICH METHOD COMPRISES PREPARING ELONGATE ROD-LIKE SMOOTH-SURFACED MEMBERS OF PULVERULENT MATERIAL SELECTED FOR THE PARTICULAR CASTING METAL AND OF FLATTENED TRANSVERSE CROSS-SECTION SUCH AS RECTANGULAR WITH MAJOR AND MINOR CROSS-SECTIONAL AXES UNIFORM THROUGHOUT THE MEMBER LENGTHS AND WHICH MATERIAL OF SAID ROD-LIKE MEMBERS AT THE POURING AND THE ROLLING TEMPERATURES OF THE PARTICULAR SAID METAL IS STABLE AND IS CHEMICALLY AND PHYSICALLY SUBSTANTIALLY INERT WITH RESPECT TO SAID METAL AND WHICH MEMBERS WHEN A BILLET CONTAINING THEM IS SUBJECTED TO LONGITUDINAL ROLLING ARE IN THE ENTIRETY CAPABLE OF BEING CRUSHED TO FINE WELD-PREVENTING POWDER INCAPABLE OF MARRING THE METAL DURING SUCH ROLLING, PRESENTING A ROW OF SAID ROD-LIKE MEMBERS LONGITUDINALLY VERTICALLY AND IN MUTUAL PARALLELISM AT A WALLED CASTING FORMATION HAVING WALL AREAS FOR DEFINING AN ELONGATE BILLET TO HAVE SUBSTANTIALLY RECTANGULAR AND UNIFORM CROSSSECTION AND OPPOSITE PARALLEL FLAT FACES AND OPPOSITE LONGITUDINALLY STRAIGHT SIDE EDGES AND IN SO PRESENTING SAID ROD-LIKE MEMBERS DISPOSING THEM WITH THEIR SAID MAJOR CROSS-SECTIONAL AXES PARALLEL TO SAID BILLET-FACE-DEFINING AREAS OF THE CASTING FORMATION AND WITH SAID MEMBERS SUBSTANTIALLY SPACED FROM SAID AREAS AND FROM EACH OTHER AND FROM THE BILLET-SIDE-EDGE-DEFINING AREAS OF SAID FORMATION IN SUCH WISE AS TO FORM IN THE PRODUCT METAL STRIP SLITS FOR ULTIMATE INFLATION TO TUBULAR PASSAGES OF THE DESIRED SPACING AND CROSS-SECTIONAL SIZE AND SHAPE, CASTING THE PARTICULAR SAID METAL DIRECTLY ABOUT AND IN CONTACT WITH EACH OF SAID SO-PRESENTED ROD-LIKE MEMBERS TO FORM SUCH DESCRIBED ELONGATE BILLET CONTAINING THEM, FLAT ROLLING SUCH BILLET LONGITUDINALLY FOR DECREASING ITS THICKNESS BETWEEN SAID FACES THEREOF AND FOR ELONGATING IT IN THE DIRECTION OF THE LENGTHS OF SUCH ROD-LIKE MEMBERS AND FOR MOVING OPPOSITE BILLET-FACE-PARALLELING SURFACES OF THE SPACES DEFINED BY SUCH MEMBERS TOWARD EACH OTHER AND FOR CRUSHING SUCH MEMBERS TO FORM SAID FINE AND NONMARRING WELD-PREVENTING POWDER AND FOR DISTRIBUTING SUCH POWDER ALONG SAID SPACES BY AND DURING THE ROLLING FOR PREVENTING WELDING TOGETHER OF SAID SURFACES WHILE THE BILLET IS BEING SO ROLLED, AND CONTINUING SUCH ROLLING UNTIL SAID OPPOSITE SURFACES OF SAID SPACES ARE BROUGHT INTO NON-ADHERING SUBSTANTIALLY CONTACTING RELATION THEREBY TO FORM LONGITUDINAL SLITS AND UNTIL THE BILLET IS REDUCED TO FORM SAID FLAT-FACED THIN GAUGE METAL STRIP CONTAINING SAID SLITS WITH THE POWDER DISTRIBUTED AS AN EXTREMELY ATTENUATED LAYER THEREALONG AND WHICH SLITS ARE CAPABLE OF BEING INFLATED BY INTRODUCTION THEREINTO OF PRESSURE FLUID TO PROVIDE THE SELECTIVELY SPACED CONTINUOUS SMOOTH-WALLED LONGITUDINAL PASSAGES IN THE STRIP.

Claim 2

THE METHOD OF MAKING THROUGH THE MEDIUM OF CAST BILLETS THIN GAUGE FLAT-FACED STRIPS OF ONE OF THE NONFERROUS MALLEABLE METALS SELECTED FROM THE GROUP CONSISTING OF COPPER, ALUMINUM, AND ZINC IN LENGTHS INCLUDING GREAT LENGTHS UP TO HUNDREDS OF FEET AND HAVING THROUGHOUT THE LENGTHS INTERNAL LONGITUDINAL PARALLEL SLITS INFLATABLE TO FORM SMOOTH-WALLED TUBULAR PASSAGES IN THE METAL STRIP, WHICH METHOD COMPRISES PREPARING ELONGATE ROD-LIKE SMOOTH-SURFACED MEMBERS OF PULVERULENT MATERIAL SELECTED FOR THE PARTICULAR CASTING METAL AND OF FLATTENED TRANSVERSE CROSS-SECTION SUCH AS RECTANGULAR WITH MAJOR AND MINOR CROSS-SECTIONAL AXES UNIFORM THROUGHOUT THE MEMBER LENGTHS AND WHICH MATERIAL OF SAID ROD-LIKE MEMBERS AT THE POURING AND THE ROLLING TEMPERATURES OF THE PARTICULAR SAID METAL IS STABLE AND IS CHEMICALLY AND PHYSICALLY SUBSTANTIALLY INERT WITH RESPECT TO SAID METAL AND WHICH MEMBERS WHEN A BILLET CONTAINING THEM IS SUBJECTED TO LONGITUDINAL ROLLING ARE IN THE ENTIRETY CAPABLE OF BEING CRUSHED TO FINE WELD-PREVENTING POWDER INCAPABLE OF MARRING THE METAL DURING SUCH ROLLING, PRESENTING A ROW OF SAID ROD-LIKE MEMBERS LONGITUDINALLY VERTICALLY AND IN MUTUAL PARALLELISM AT A WALLED CASTING FORMATION HAVING WALL AREAS FOR DEFINING AN ELONGATE BILLET TO HAVE SUBSTANTIALLY RECTANGULAR AND UNIFORM CROSSSECTION AND OPPOSITE PARALLEL FLAT FACES AND OPPOSITE LONGITUDINALLY STRAIGHT SIDE EDGES AND IN SO PRESENTING SAID ROD-LIKE MEMBERS DISPOSING THEM WITH THEIR SAID MAJOR CROSS-SECTIONAL AXES PARALLEL TO SAID BILLET-FACE-DEFINING AREAS OF THE CASTING FORMATION AND WITH SAID MEMBERS SUBSTANTIALLY SPACED FROM SAID AREAS AND FROM EACH OTHER AND FROM THE BILLET-SIDE-EDGE-DEFINING AREAS OF SAID FORMATION IN SUCH WISE AS TO FORM IN THE PRODUCT METAL STRIP SLITS FOR ULTIMATE INFLATION TO TUBULAR PASSAGES OF THE DESIRED SPACING AND CROSS-SECTIONAL SIZE AND SHAPE, CASTING THE PARTICULAR SAID METAL DIRECTLY ABOUT AND IN CONTACT WITH EACH OF SAID SO-PRESENTED ROD-LIKE MEMBERS TO FORM SUCH DESCRIBED ELONGATE BILLET CONTAINING THEM, FLAT ROLLING SUCH BILLET LONGITUDINALLY FOR DECREASING ITS THICKNESS BETWEEN SAID FACES THEREOF AND FOR ELONGATING IT IN THE DIRECTION OF THE LENGTHS OF SUCH ROD-LIKE MEMBERS AND FOR MOVING OPPOSITE BILLET-FACE-PARALLELING SURFACES OF THE SPACES DEFINED BY SUCH MEMBERS TOWARD EACH OTHER AND FOR CRUSHING SUCH MEMBERS TO FORM SAID FINE AND NONMARRING WELD-PREVENTING POWDER AND FOR DISTRIBUTING SUCH POWDER ALONG SAID SPACES BY AND DURING THE ROLLING FOR PREVENTING WELDING TOGETHER OF SAID SURFACES WHILE THE BILLET IS BEING SO ROLLED, AND CONTINUING SUCH ROLLING UNTIL SAID OPPOSITE SURFACES OF SAID SPACES ARE BROUGHT INTO NON-ADHERING SUBSTANTIALLY CONTACTING RELATION THEREBY TO FORM LONGITUDINAL SLITS AND UNTIL THE BILLET IS REDUCED TO FORM SAID FLAT-FACED THIN GAUGE METAL STRIP CONTAINING SAID SLITS WITH THE POWDER DISTRIBUTED AS AN EXTREMELY ATTENUATED LAYER THEREALONG AND WHICH SLITS ARE CAPABLE OF BEING INFLATED BY INTRODUCTION THEREINTO OF PRESSURE FLUID TO PROVIDE THE SELECTIVELY SPACED CONTINUOUS SMOOTH-WALLED LONGITUDINAL PASSAGES IN THE STRIP.