Can body and method of forming the same

Claim 1

METHOD OF FORMING A TUBE FROM A DEFORMABLE METAL STRIP COMPRISING BLANKING THE STRIP WITH A DIE ALONG TWO SPACED PARALLEL TRAVERSE LINES THEREOF TO FORM THE TUBE BODY BLANK, SAID DIE BEING CONSTRUCTED TO FORM COMPLEMENTAL DOVETAIL PROJECTIONS AND DOVETAIL NOTCHES ALONG THE ENTIRE LENGTH OF EACH TRAVERSE LINE, ABRUPTLY BENDING EACH DOVETAIL PROJECTION ALONG AT LEAST ONE OF THE EDGES OF THE TUBE BODY BLANK ABOUT A BEND LINE EXTENDING ALONG SUBSTANTIALLY THE ENTIRE LENGTH OF THE LONGITUDINAL AXIS OF THE DOVETAIL PROJECTION INTERMEDIATE ITS AXIALLY EXTENDING EDGES TO DRAW THE EDGES TOWARD ONE ANOTHER AND IMPART A V CROSS SECTION TO THE DOVETAIL PROJECTION WHILE STRETCHING AND SPREADING THE MATERIAL OF WHICH IT IS MADE TRANSVERSE SAID BEND LINE, ROLLING THE TUBE BODY BLANK INTO TUBULAR FORM, INTERFITTING THE DOVETAIL PROJECTIONS AND DOVETAIL NOTCHES ON SAID EDGES OF THE TUBE BODY BLANK TO FORM A SEAM, AND FLATTENING THE BENT AND STRETCHED DOVE-TAIL PROJECTIONS INTO THE PLANE OF THE SEAM TO EFFECT INTERENGAGEMENT THEREOF WITH THE DOVETAIL NOTCHES WHEREIN THEY FIT.