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Patent US3962898A successfully refreshed from Google Patents.
US3962898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of wire
Assignee: BERKENHOFF and DREBES GmbH
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Filing: 1974-04-22
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Granted: 1976-06-15
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Expires: 1994-04-22
Abstract
Abstract 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.
Inventors
- 👤 Klaus Erich Tillmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:57
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/08; B; B21; B21C; B21C1/00; B21C1/003; B21C9/00; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/62
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
185 words
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; and coupling means for drivingly coupling said second drawing roller to said first drawing roller, said coupling means having a characteristic of drawing said second drawing roller so that the peripheral speed thereof is higher than the peripheral speed of said first drawing roller.
Claim 2
Dependent Claim
185 words
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; and coupling means for drivingly coupling said second drawing roller to said first drawing roller, said coupling means having a characteristic of drawing said second drawing roller so that the peripheral speed thereof is higher than the peripheral speed of said first drawing roller.
Claim 3
Dependent Claim
36 words
An improved apparatus according to claim 1, wherein each of said first and second drawing rollers have a separate drive shaft; and wherein said coupling means includes belt means for drivingly coupling said two drive shafts.
Claim 4
Dependent Claim
28 words
An improved apparatus according to claim 1, wherein between said second draw-die means and said second drawing roller there is arranged an air nozzle which surrounds the wire.
Claim 5
Dependent Claim
26 words
An improved apparatus according to claim 1, wherein said second draw-die means includes a lubricant container through which said wire runs prior to said second drawing.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |