Method of making cylinders

Claim 1

A METHOD OF MANUFACTURING A CYLINDER FROM A PLURALITY OF SUBSTANTIALLY FLAT PLATES COMPRISING THE STEPS OF PLACING THE PLATES ON A SUBSTANTIALLY FLAT SURFACE IN ADJOINING RELATIONSHIP SO AS TO DEFINE A PLURALITY OF SEAMS BETWEEN THE LONGITUDINALLY EXTENDING EDGES OF THE PLATES, WELDING SAID PLATES TOGETHER ALONG SAID SEAMS FROM THE TOP OF SAID PLATE SO AS TO ASSEMBLE A COMPOSITE PLATE HAVING RELATIVELY LARGE WELD BEADS ON THE TOP OF SAID COMPOSITE PLATE AND RELATIVELY SMALL WELD BEADS ON THE BOTTOM OF SAID COMPOSITE PLATE, TURNING SAID COMPOSITE PLATE OVER SO THAT THE SIDE OF SAID COMPOSITE PLATE HAVING SAID SMALLER WELD BEADS ON IT FACES UPWARDLY, CRIMPING EACH LONGITUDINALLY EXTENDING FREE EDGE OF THE COMPOSITE PLATE UPWARDLY INTO AN ARC HAVING A RADIUS CORRESPONDING TO THE PRESCRIBED RADIUS OF THE FINISHED CYLINDER, ROLLING SAID COMPOSITE PLATE ABOUT A LONGITUDINALLY EXTENDING AXIS UNTIL SAID FREE EDGES COME INTO IMMEDIATE ADJACENT RELATIONSHIP AND AN OPEN SEAM IS DEFINED BETWEEN SAID FREE EDGES, AND WELDING SAID OPEN SEAM FROM THE OUTSIDE OF SAID ROLLED COMPOSITE PLATE TO FORM A CYLINDER HAVING SAID RELATIVELY LARGE WELD BEADS ON THE OUTSIDE OF SAID CYLINDER.

Claim 2

A METHOD OF MANUFACTURING A CYLINDER FROM A PLURALITY OF SUBSTANTIALLY FLAT PLATES COMPRISING THE STEPS OF PLACING THE PLATES ON A SUBSTANTIALLY FLAT SURFACE IN ADJOINING RELATIONSHIP SO AS TO DEFINE A PLURALITY OF SEAMS BETWEEN THE LONGITUDINALLY EXTENDING EDGES OF THE PLATES, WELDING SAID PLATES TOGETHER ALONG SAID SEAMS FROM THE TOP OF SAID PLATE SO AS TO ASSEMBLE A COMPOSITE PLATE HAVING RELATIVELY LARGE WELD BEADS ON THE TOP OF SAID COMPOSITE PLATE AND RELATIVELY SMALL WELD BEADS ON THE BOTTOM OF SAID COMPOSITE PLATE, TURNING SAID COMPOSITE PLATE OVER SO THAT THE SIDE OF SAID COMPOSITE PLATE HAVING SAID SMALLER WELD BEADS ON IT FACES UPWARDLY, CRIMPING EACH LONGITUDINALLY EXTENDING FREE EDGE OF THE COMPOSITE PLATE UPWARDLY INTO AN ARC HAVING A RADIUS CORRESPONDING TO THE PRESCRIBED RADIUS OF THE FINISHED CYLINDER, ROLLING SAID COMPOSITE PLATE ABOUT A LONGITUDINALLY EXTENDING AXIS UNTIL SAID FREE EDGES COME INTO IMMEDIATE ADJACENT RELATIONSHIP AND AN OPEN SEAM IS DEFINED BETWEEN SAID FREE EDGES, AND WELDING SAID OPEN SEAM FROM THE OUTSIDE OF SAID ROLLED COMPOSITE PLATE TO FORM A CYLINDER HAVING SAID RELATIVELY LARGE WELD BEADS ON THE OUTSIDE OF SAID CYLINDER.