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A method of forming a pair of sheet metal structural members simultaneously from a single elongated strip of sheet metal defining parallel side edges and comprising the steps of severing the strip sheet metal along a predetermined zig-zag separation path, thereby dividing the strip into two strip po

A method of forming a pair of sheet metal structural members simultaneously from a single elongated strip of sheet metal defining parallel side edges and comprising the steps of severing the strip sheet metal along a predetermined zig-zag separation path, thereby dividing the strip into two strip portions on opposite sides of the zig-zag separation path, each having generally zig-zag edges the zig-zag edges being in generally inter-fitting relation; forming edge flange formations along the zig-zag edges of each of the strip portions at an angle thereto, and, forming linear edge formations along the parallel side edges of the strip portions.

대표청구항 ▼

A method of forming a pair of sheet metal structural members simultaneously from a single elongated strip of sheet metal defining parallel side edges and comprising the steps of; severing said strip sheet metal along a pre-determined zig-zag separation path, thereby dividing said strip into two stri

A method of forming a pair of sheet metal structural members simultaneously from a single elongated strip of sheet metal defining parallel side edges and comprising the steps of; severing said strip sheet metal along a pre-determined zig-zag separation path, thereby dividing said strip into two strip portions on opposite sides of said zig-zag separation path, each having generally zig-zag edges said zig-zag edges being in generally inter-fitting relation; forming edge flange formations along said zig-zag edges of each of said strip portions at an angle thereto, and, forming linear edge formations along said parallel side edges of said strip portions.