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US 3,962,898 AGranted
Apparatus for the manufacture of wire
AssigneeBerkenhoff & Drebes Gesellschaft mit beschrankter Haftung
InventorKlaus Erich Tillmann
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AssigneeBerkenhoff & Drebes Gesellschaft mit beschrankter Haftung
InventorKlaus Erich Tillmann
Estimating the term…
Apparatus for manufacture of wire. The apparatus includes structure for drawing the wire through a conventional wire drawing device and including a pull roller at the output point thereof. The wire then travels through a zone wherein an electric current is caused to flow through said wire while same is in motion therethrough for heating and annealing same, after which the wire is cooled and then directed through a further die for further shaping and cold working of same. A pull roller is provided at the output end of the last-named die for pulling the wire therethrough. The wire is finally wound onto a spool. By heating the wire as noted, same can travel through the heating zone at the same speed as through the dies and hence the operation is continuous and does not require intermediate winding and unwinding. Suitable coupling structure is provided for effecting proper speed relationships between the peripheries of the first-mentioned and second-mentioned pull rollers.
In an apparatus for the manufacture of wire, preferably of nonferrous wire such as brass, tombac, or bronze, for Foudriner machine screens, said apparatus having an input and an output, the improvement comprising first draw-die means adjacent said input for effecting a first cold drawing, said first draw-die means including a first drawing roller for pulling said wire through said first draw-die means, means defining an electric resistance heating zone for applying electrical energy directly to he wire immediately following said first drawing roller, the electrical resistance of said wire effecting a heating of said wire in response to said electrical energy to anneal said wire, second draw-die means for effecting a second cold drawing immediately following said electric resistance heating zone means, said second draw-die means including a second drawing roller for pulling said wire through said second draw-die means;
Dependencies are inferred from the claim text.