Method for making tubular welded wire screens
AssigneeN. V. Bekaert S. A.
InventorEdouard Binard
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Abstract
A method for making cylindrical welded wire screens by continuously bending a wire into a helical wrap with juxtaposed equal wraps having their diameter substantially equal to the desired finished diameter of the screen whereby the radius of curvature applied to the wire is smaller than the radius of the wrap and the bending area is inside the outer circumference, supporting the wraps and progressively guiding them and bringing them into contact with supporting wires substantially parallel to the generatrix of the cylinder, and welding the wraps to the supporting wires at their contact points.
Claims5
A method for making cylindrical welded wire screens comprising:
- a. continuously bending a wire into a helical wrap so as to form juxtaposed equal wraps substantially free of residual bending stresses, each of said wraps having a diameter substantially equal to the desired finish diameter of the cylindrical screen and whereby the radius of curvature imparted to the wire during the bending step is smaller than the radius of the formed wraps, said continuous bending being performed inside the outer circumference of the wraps,
- b. supporting said formed wraps and progressively guiding said formed wraps and bringing successive points of said formed wraps into contact with a plurality of supporting wires extending in the contact area substantially parallel to the generatrix of the cylindrical screen thereby substantially equally spacing successive connecting points of the wraps with the same supporting wire, and
- c. connecting successive contact points of said wraps with said supporting wires by welding.
Dependencies are inferred from the claim text.