US3842643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of wires
Assignee: Individual
•
Filing: 1972-11-06
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Granted: 1974-10-22
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Expires: 1992-11-06
Abstract
Abstract A method of processing wire comprises drawing it by at least one capstan through at least two dies to produce a reduction in area of at least 30 percent and passing through the or each wire directly (i.e. without an intermediate accumulator) into subsequent processing apparatus. The or each drawing capstan is driven at a peripheral speed greater than the speed of the wire engaged thereby, and the subsequent processing apparatus includes means determining the speed of the wire, during drawing as well as during subsequent processing, at such a value that its speed through each die through which it passes is so related to the reduction in crosssection effected at that die that the wire is not significantly heated. In the case of copper or aluminium wires, the wire temperature should not exceed 150*C during drawing.
Inventors
- 👤 J Large
- 👤 J Moss
- 👤 D Dutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:15
CPC Classifications
B; B21; B21C; B21C1/00; B21C1/02; B21C1/04; B21C1/06; B21C1/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A method of manufacturing enamelled wire comprising: a. drawing a bare copper wire by at least one capstan through a series of dies to reduce its area by from 30 percent to 80 percent; b. passing the wire directly into enamelling apparatus including means determining the speed of the wire, during drawing as well as during subsequent processing, at so low a value that the speed of the wire through each one of said dies is so related to the reduction in cross-section effected at that die that solely as a consequence of the low speed the wire is not heated above 150*C during drawing, and c. driving said drawing capstan at a peripheral speed greater than the speed of the wire engaged thereby.
Claim 2
Independent Claim
124 words
A method of manufacturing enamelled wire comprising: a. drawing a bare copper wire by at least one capstan through a series of dies to reduce its area by from 30 percent to 80 percent; b. passing the wire directly into enamelling apparatus including means determining the speed of the wire, during drawing as well as during subsequent processing, at so low a value that the speed of the wire through each one of said dies is so related to the reduction in cross-section effected at that die that solely as a consequence of the low speed the wire is not heated above 150*C during drawing, and c. driving said drawing capstan at a peripheral speed greater than the speed of the wire engaged thereby.
Claim 3
Independent Claim
142 words
A method of manufacturing a plurality of enamelled wires comprising: a. drawing each of a plurality of bare copper wires by at least one capstan through a series of dies to reduce its area by from 30 percent to 80 percent; b. passing each wire directly into enamelling apparatus including means determining the speed of the wires, during drawing as well as during subsequent processing, at so low a value that the speed of each wire through each one of said dies is so relAted to the reduction in cross-section effected at that die that solely as a consequence of the low speed the wire is not heated above 150*C during drawing; and c. driving all of the drawing capstans for all of the wires from a common source at respective peripheral speeds greater than the speeds of the wires engaged thereby.
Claim 4
Independent Claim
142 words
A method of manufacturing a plurality of enamelled wires comprising: a. drawing each of a plurality of bare copper wires by at least one capstan through a series of dies to reduce its area by from 30 percent to 80 percent; b. passing each wire directly into enamelling apparatus including means determining the speed of the wires, during drawing as well as during subsequent processing, at so low a value that the speed of each wire through each one of said dies is so relAted to the reduction in cross-section effected at that die that solely as a consequence of the low speed the wire is not heated above 150*C during drawing; and c. driving all of the drawing capstans for all of the wires from a common source at respective peripheral speeds greater than the speeds of the wires engaged thereby.
Claim 5
Dependent Claim
34 words
A method as claimed in claim 1 in which the speed of the or each wire at least in part of its path is in the range from 0.1 to 1 m s 1.
Claim 6
Dependent Claim
29 words
A method as claimed in claim 1 comprising coupling the drive of said subsequent processing apparatus to the drive for the drawing capstans to obtain a constant speed ratio.
Claim 7
Dependent Claim
32 words
A method as claimed in claim 2 in which the speed of each wire at least in part of its path is in the range from 0.1 to 1 m s 1.
Claim 8
Dependent Claim
30 words
A method as claimed in claim 2 comprising coupling the drive of the said subsequent processing apparatus to the drive for the drawing capstans to obtain a constant speed ratio.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |