US3742693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn-twisting apparatus for formation of multiple-ply thread
Assignee: Hamel GmbH
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Filing: 1971-10-12
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Granted: 1973-07-03
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Expires: 1991-10-12
Abstract
Abstract A yarn-twisting apparatus for formation of multiple-ply thread has a nonrotatable spindle carrying at least one spool from which two strands are drawn. The strands or threads pass down through the hollow interior of the spindle and out a radial opening in a rotating storage disk, thence up around the spool or spools to a bobbin. A first brake comprising a ball received in a conical or funnel-shaped seat is provided in the top or inlet end of the spindle and a second brake in the form of a compressible body with semispherical ends received between two conical seats is provided in the lower or yarn-outlet region of the spindle. The upper seat of the lower brake is formed on the end of a hollow element threaded into the spindle and provided with a scale so that the axial position of its seat can be read off and set according to how much tension is to be imparted to the threads by the second brake.
Inventors
- 👤 A Greive
- 👤 A Treus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:49
CPC Classifications
D; D01; D01H; D01H13/00; D01H13/10; D01H13/104; D01H13/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
302 words
An apparatus for twisting a pair of yarns comprising: an upright hollow spindle; means for mounting a pair of axially spaced spools coaxially with said spindle, each of said spools providing one of said yarns; a rotatable disk at the base of said spindle having a radial opening communicating with the interior thereof, said yarns passing longitudinally upwardly to the top of said spindle along the exterior thereof, in through the top of said spindle, downwardly through said spindle and outwardly through said opening; a first thread brake at said top of said spindle comprising a downwardly converging ball seat, a ball reCeived in said seat, and an annulace having rounded ribs retaining said ball and guiding said yarns between said ball and said seat; a second thread brake in said hollow spindle axially spaced from said first thread brake and close to said base, said second thread brake comprising a pair of axially open conical seats converging away from one another and a compressible body engaged between said seats of said second thread brake and pressing said yarns thereagainst, said body being formed with a pair of telescoping cylindrical sleeves having hemispherical end surfaces contacting the respective seats, and a compression spring axially urging said sleeves apart, said spindle including a tubular base portion receiving said second thread brake and an inner portion threaded into said base portion at the top thereof and carrying said first thread brake, said inner portion bearing axially against one of the seats of said second thread brake; indicating means connected to said spindle for displacing the relative angular positions of said portions corresponding to the force applied by said sleeves against the respective seats; and an eye axially aligned with said spindle and disposed thereabove, said yarns passing from said opening upwardly through said eye.
Claim 2
Independent Claim
302 words
An apparatus for twisting a pair of yarns comprising: an upright hollow spindle; means for mounting a pair of axially spaced spools coaxially with said spindle, each of said spools providing one of said yarns; a rotatable disk at the base of said spindle having a radial opening communicating with the interior thereof, said yarns passing longitudinally upwardly to the top of said spindle along the exterior thereof, in through the top of said spindle, downwardly through said spindle and outwardly through said opening; a first thread brake at said top of said spindle comprising a downwardly converging ball seat, a ball reCeived in said seat, and an annulace having rounded ribs retaining said ball and guiding said yarns between said ball and said seat; a second thread brake in said hollow spindle axially spaced from said first thread brake and close to said base, said second thread brake comprising a pair of axially open conical seats converging away from one another and a compressible body engaged between said seats of said second thread brake and pressing said yarns thereagainst, said body being formed with a pair of telescoping cylindrical sleeves having hemispherical end surfaces contacting the respective seats, and a compression spring axially urging said sleeves apart, said spindle including a tubular base portion receiving said second thread brake and an inner portion threaded into said base portion at the top thereof and carrying said first thread brake, said inner portion bearing axially against one of the seats of said second thread brake; indicating means connected to said spindle for displacing the relative angular positions of said portions corresponding to the force applied by said sleeves against the respective seats; and an eye axially aligned with said spindle and disposed thereabove, said yarns passing from said opening upwardly through said eye.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |