US3659408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stranding apparatus
Assignee: Alcatel USA Holding Corp
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Filing: 1970-03-13
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Granted: 1972-05-02
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Expires: 1990-03-13
Abstract
Abstract A strand is twisted by passing it between the facing surfaces of two or more pairs of parallel endless bands that are mounted at an acute angle to each other. The band mountings are pivoted periodically to reverse the direction of twist, the period being equal to the time it takes a point on the strand to pass through all the pairs of bands.
Inventors
- 👤 Harvey Burr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:37
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/26; D02G3/28; D02G3/286
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
98 words
An apparatus for twisting together a plurality of advancing strands comprising: A. means supporting two moving surfaces on opposite sides of said strands and in frictional engagement therewith, and B. means driving said surfaces to move at said engagement at velocities having, a. a first component substantially equal to the velocity of advancing of said strands, and b. components, normal to said first component and opposite in direction to each other, comprising a twisting couple applied to said strands, the resultant of said components of each of said surfaces forming an angle with said first component of 1*-15*.
Claim 2
Independent Claim
98 words
An apparatus for twisting together a plurality of advancing strands comprising: A. means supporting two moving surfaces on opposite sides of said strands and in frictional engagement therewith, and B. means driving said surfaces to move at said engagement at velocities having, a. a first component substantially equal to the velocity of advancing of said strands, and b. components, normal to said first component and opposite in direction to each other, comprising a twisting couple applied to said strands, the resultant of said components of each of said surfaces forming an angle with said first component of 1*-15*.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1 wherein said surfaces are comprised of endless bands.
Claim 4
Dependent Claim
147 words
A stranding apparatus comprising: A. a first pair of parallel endless bands, a surface on one of said bands being adjacent to a facing surface of the other of said bands, B. means driving both of said bands at substantially equal speeds, C. a second pair of parallel endless bands spaced downstream from said first pair of bands, a surface of one of said second pair of bands being adjacent to a facing surface of the other of said second pair of bands, D. means continuously advancing both of said second pairs of bands at substantially equal speeds, E. means paying a plurality of strands along a path between said adjacent surfaces of said first and second pairs of bands, and F. means mounting the bands comprising each of said pairs to advance along lines forming an acute angle intersected by said path, thereby twisting said strands.
Claim 5
Dependent Claim
147 words
A stranding apparatus comprising: A. a first pair of parallel endless bands, a surface on one of said bands being adjacent to a facing surface of the other of said bands, B. means driving both of said bands at substantially equal speeds, C. a second pair of parallel endless bands spaced downstream from said first pair of bands, a surface of one of said second pair of bands being adjacent to a facing surface of the other of said second pair of bands, D. means continuously advancing both of said second pairs of bands at substantially equal speeds, E. means paying a plurality of strands along a path between said adjacent surfaces of said first and second pairs of bands, and F. means mounting the bands comprising each of said pairs to advance along lines forming an acute angle intersected by said path, thereby twisting said strands.
Claim 6
Dependent Claim
25 words
The apparatus of claim 3 comprising means periodically pivoting the mounting of at least one pair of said bands so as to change said angle.
Claim 7
Dependent Claim
37 words
The apparatus of claim 4 wherein the period of said change corresponds to the time of advance of a point on said strands between the entrance to said first and the exit to second pair of bands.
Claim 8
Dependent Claim
25 words
The apparatus of claim 4 wherein said angle for said second pair of bands is smaller than said angle for said first pair of bands.
Claim 9
Dependent Claim
34 words
The apparatus of claim 6 wherein the tangent of one-half of said angle for said second pair of bands is one-half the tangent of one-half of said angle for said first pair of bands.
Claim 10
Dependent Claim
164 words
A stranding apparatus comprising: A. a first pair of parallel endless bands, a surface of one of said bands being adjacent to a facing surface of the other of said bands, B. means driving both of said bands at substantially equal speeds, C. a second pair of parallel endless bands, a surface of one of said second pair of bands being adjacent to a facing surface of the other of said second pair of bands, D. means advancing both bands of said second pair at substantially equal speeds, E. means mounting said second pair of bands spaced from said first pair of bands, F. means paying a plurality of strands along a path forming at least one loop around a band from each of said pairs, G. means mounting the bands comprising each of said pairs to advance along lines forming an acute angle, and H. means periodically pivoting the mounting of at least one of said bands so as to change said angle.
Claim 11
Dependent Claim
164 words
A stranding apparatus comprising: A. a first pair of parallel endless bands, a surface of one of said bands being adjacent to a facing surface of the other of said bands, B. means driving both of said bands at substantially equal speeds, C. a second pair of parallel endless bands, a surface of one of said second pair of bands being adjacent to a facing surface of the other of said second pair of bands, D. means advancing both bands of said second pair at substantially equal speeds, E. means mounting said second pair of bands spaced from said first pair of bands, F. means paying a plurality of strands along a path forming at least one loop around a band from each of said pairs, G. means mounting the bands comprising each of said pairs to advance along lines forming an acute angle, and H. means periodically pivoting the mounting of at least one of said bands so as to change said angle.
Claim 12
Dependent Claim
29 words
The apparatus of claim 8 wherein the period of said change corresponds to the time of advance of a point on said strands around the totality of said loops.
Claim 13
Dependent Claim
340 words
A stranding apparatus comprising: A. means continuously paying a plurality of strands from an upstream to a downstream station, B. a first pair of endless bands, a surface of one of said bands being parallel to a facing surface of the other of said bands, C. means for driving both of said bands at substantially the same speed along lines forming a first acute angle, D. a second pair of endless bands, a surface of one band of said second pair being parallel to a facing surface of the other band of said second pair, said second pair being mounted downstream of, and adjacent to, said first pair, E. means for driving both of the bands of said second pair at substantially the same speed along lines forming an acute angle differing from said first angle, F. a third pair of endless bands, a surface of one band of said third pair being parallel to a facing surface of the other band of said third pair, said third pair being mounted downstream of, and spaced substantially from said second pair, G. means for driving both bands of said third pair at substantially the same speed along lines forming a third acute angle, H. a fourth pair of endless bands, a surface of one band of said fourth pair being parallel to a facing surface of the other band of said fourth pair, said fourth pair being mounted downstream of, anD adjacent to, said third pair, I. means for driving both bands of said fourth pair at substantially the same speed along lines forming a fourth acute angle differing from said third angle, and J. means periodically separating the bands of said first and third pairs, and bringing together the bands of said second and fourth pairs so as to twist said strands by means of said second and fourth pairs and alternately separating said second and fourth pairs and bringing together said first and third pairs so as to twist said strands by means of said first and third pairs.
Claim 14
Dependent Claim
340 words
A stranding apparatus comprising: A. means continuously paying a plurality of strands from an upstream to a downstream station, B. a first pair of endless bands, a surface of one of said bands being parallel to a facing surface of the other of said bands, C. means for driving both of said bands at substantially the same speed along lines forming a first acute angle, D. a second pair of endless bands, a surface of one band of said second pair being parallel to a facing surface of the other band of said second pair, said second pair being mounted downstream of, and adjacent to, said first pair, E. means for driving both of the bands of said second pair at substantially the same speed along lines forming an acute angle differing from said first angle, F. a third pair of endless bands, a surface of one band of said third pair being parallel to a facing surface of the other band of said third pair, said third pair being mounted downstream of, and spaced substantially from said second pair, G. means for driving both bands of said third pair at substantially the same speed along lines forming a third acute angle, H. a fourth pair of endless bands, a surface of one band of said fourth pair being parallel to a facing surface of the other band of said fourth pair, said fourth pair being mounted downstream of, anD adjacent to, said third pair, I. means for driving both bands of said fourth pair at substantially the same speed along lines forming a fourth acute angle differing from said third angle, and J. means periodically separating the bands of said first and third pairs, and bringing together the bands of said second and fourth pairs so as to twist said strands by means of said second and fourth pairs and alternately separating said second and fourth pairs and bringing together said first and third pairs so as to twist said strands by means of said first and third pairs.
Claim 15
Dependent Claim
16 words
The apparatus of claim 10 wherein said first angle is substantially equal to said third angle.
Claim 16
Dependent Claim
29 words
The apparatus of claim 10 wherein said second angle is substantially in reverse of said first angle and said fourth angle is substantially in reverse of said third angle.
Claim 17
Independent Claim
124 words
The method of twisting together a plurality of strands comprising the steps of: A. continuously advancing said strands between two endless bands having a surface of one of said bands adjacent to a facing surface of the other of said bands, said surfaces moving at a substantially equal speed at an acute angle to each other, B. continuously grouping said plurality of strands together at a point upstream of said bands, C. paying said strands between said adjacent surfaces in frictional contact with said surfaces in a line intersecting said angle and thereby rolling said strands over each other and twisting the same together while, at the same time, urging said strands along said line by means of the frictional contact with said surfaces.
Claim 18
Independent Claim
124 words
The method of twisting together a plurality of strands comprising the steps of: A. continuously advancing said strands between two endless bands having a surface of one of said bands adjacent to a facing surface of the other of said bands, said surfaces moving at a substantially equal speed at an acute angle to each other, B. continuously grouping said plurality of strands together at a point upstream of said bands, C. paying said strands between said adjacent surfaces in frictional contact with said surfaces in a line intersecting said angle and thereby rolling said strands over each other and twisting the same together while, at the same time, urging said strands along said line by means of the frictional contact with said surfaces.
Claim 19
Dependent Claim
11 words
The method of claim 13 wherein said strands comprise insulated conductors.
Claim 20
Independent Claim
94 words
The method of stranding together a plurality of advancing strands with a reversing lay comprising the steps of: A. continuously grouping said strands together at a point in the line of advancement of said strands, B. downstream of said point passing said strands between a pair of endless bands mounted at an acute angle to each other and having a common component of surface velocity substantially equal to the velocity of advancement of said strands and thereby twisting together said strands, and C. periodically changing the lay of said twisting together of said strands.
Claim 21
Independent Claim
94 words
The method of stranding together a plurality of advancing strands with a reversing lay comprising the steps of: A. continuously grouping said strands together at a point in the line of advancement of said strands, B. downstream of said point passing said strands between a pair of endless bands mounted at an acute angle to each other and having a common component of surface velocity substantially equal to the velocity of advancement of said strands and thereby twisting together said strands, and C. periodically changing the lay of said twisting together of said strands.
Claim 22
Dependent Claim
15 words
The method of claim 15 wherein said lay is changed by changing said acute angle.
Claim 23
Dependent Claim
67 words
The method of claim 15 comprising the step of passing said strands between an additional pair of endless bands spaced in the line of advancement of said strands from said first named endless bands, and timing the period of changing said lay of twisting to correspond to the length of time required for a point on said strands to pass completely between the two pairs of bands.
Claim 24
Dependent Claim
23 words
The method of claim 17 wherein said lay is changed by changing the angle between at least one of said pairs of bands.
Claim 25
Independent Claim
100 words
The method of making an electric cable comprising the steps of: A. paying a plurality of conductors into extrusion means thereby continuously applying a layer of insulation to each of said conductors to form an insulated conductor, B. continuously passing a plurality of said insulated conductors advancing from said extrusion means between two spaced-apart pairs of endless bands, each of said pairs comprising two facing band surfaces mounted to advance at an acute angle to each other and twist together said strands, and C. periodically changing the lay of twist of said strands at at least one of said pairs.
Claim 26
Independent Claim
100 words
The method of making an electric cable comprising the steps of: A. paying a plurality of conductors into extrusion means thereby continuously applying a layer of insulation to each of said conductors to form an insulated conductor, B. continuously passing a plurality of said insulated conductors advancing from said extrusion means between two spaced-apart pairs of endless bands, each of said pairs comprising two facing band surfaces mounted to advance at an acute angle to each other and twist together said strands, and C. periodically changing the lay of twist of said strands at at least one of said pairs.
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |