Patent US3743202A successfully refreshed from Google Patents.
US3743202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed and tension control for yarn winder
Assignee: Enterprise Machine & Dev
•
Filing: 1972-06-14
•
Granted: 1973-07-03
•
Expires: 1992-06-14
Abstract
Abstract The speed control includes a tension sensing element which is positioned in advance of the wind-up package to detect variations in tension of the yarn as it approaches the package. The rotational speed of the wind-up package is varied in response to a variation in tension in the yarn to thereby maintain uniform linear speed in the yarn being wound onto the wind-up package. A drive roll is positioned beneath and rotates the wind-up package by surface contact with the yarn and the wind-up package is normally maintained against the drive roll with a predetermined driving force and the control means operates to reduce the pressure and the driving point of the wind-up package against the drive roll and thereby decrease the rotational speed of the windup package in response to any increase in tension in the yarn approaching the wind-up package.
Inventors
- 👤 W Hoffsommer
- 👤 W Bartnicki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:03
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38; B65H59/381; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
279 words
In an apparatus for texturing yarn and for winding the textured yarn onto a take-up package at a substantially constant predetermined linear speed and under substantially constant tension conditions, said apparatus including a yarn supply source, a fluId bulking jet spaced from said yarn supply source, first yarn feed roll means positioned between said yarn supply and said jet for feeding yarn into said jet at a given rate, second yarn feed roll means for withdrawing the yarn from said jet at a predetermined lesser rate than said given rate, yarn traversing means for feeding the yarn to and fro across said take-up package, a drive roll positioned beneath and rotating said take-up package by surface contact with the yarn wound thereon, and means rotatably supporting said take-up package against said drive roll with a given pressure whereby the yarn wound on said take-up package is normally maintained against said drive roll with a predetermined driving force, the combination therewith of a. sensor means positioned between said second yarn feed roll means and said take-up package and being engaged by the continuously moving yarn, said sensor means being movable in response to any increase in tension and linear speed of the yarn between said second yarn feed roll means and said take-up package, and b. operator means operable in response to movement of said sensor means for reducing said given pressure of said take-up package against said drive roll to thereby decrease the driving force applied to said take-up package by said drive roll and to reduce the rotational speed of said take-up package and to maintain uniform linear speed in the yarn being wound onto said take-up package.
Claim 2
Dependent Claim
279 words
In an apparatus for texturing yarn and for winding the textured yarn onto a take-up package at a substantially constant predetermined linear speed and under substantially constant tension conditions, said apparatus including a yarn supply source, a fluId bulking jet spaced from said yarn supply source, first yarn feed roll means positioned between said yarn supply and said jet for feeding yarn into said jet at a given rate, second yarn feed roll means for withdrawing the yarn from said jet at a predetermined lesser rate than said given rate, yarn traversing means for feeding the yarn to and fro across said take-up package, a drive roll positioned beneath and rotating said take-up package by surface contact with the yarn wound thereon, and means rotatably supporting said take-up package against said drive roll with a given pressure whereby the yarn wound on said take-up package is normally maintained against said drive roll with a predetermined driving force, the combination therewith of a. sensor means positioned between said second yarn feed roll means and said take-up package and being engaged by the continuously moving yarn, said sensor means being movable in response to any increase in tension and linear speed of the yarn between said second yarn feed roll means and said take-up package, and b. operator means operable in response to movement of said sensor means for reducing said given pressure of said take-up package against said drive roll to thereby decrease the driving force applied to said take-up package by said drive roll and to reduce the rotational speed of said take-up package and to maintain uniform linear speed in the yarn being wound onto said take-up package.
Claim 3
Dependent Claim
63 words
In an apparatus according to claim 1 wherein said take-up package support means includes counterweight means for maintaining said predetermined driving force normally applied against said drive roll by the weight of said take-up package, and wherein said operator means (b) is engageable with said counterweight means for reducing said predetermined driving force normally applied against said drive roll by said take-up package.
Claim 4
Dependent Claim
53 words
In an apparatus according to claim 1 wherein said sensor means (a) includes a control lever pivotally supported adjacent one end, a yarn guide pulley at the other end of said control lever and over which the yarn passes; and wherein said operator means (b) includes switch means operable by said control lever.
Claim 5
Dependent Claim
44 words
In an apparatus according to claim 3 wherein said operator means (b) includes a pneumatic cylinder operatively connected to said counterweight means and being operable by said switch means to decrease said predetermined driving force normally against said drive roll by said take-up package.
Claim 6
Dependent Claim
34 words
In an apparatus according to claim 4 wherein said switch means comprises an air valve for selectively permitting air under pressure to enter said pneumatic cylinder in response to movement of said control lever.
Claim 7
Dependent Claim
215 words
In a machine for winding yarn at a substantially constant predetermined linear speed and under substantially constant tension conditions, said winding machine including a yarn supply source, a freely rotatable take-up package onto which the yarn is wound, yarn traversing means for feeding the yarn to and fro across said take-up package, a drive roll positioned beneath and rotating said take-up package by surface contact with the yarn wound thereon, and means supporting said take-up package against said drive roll with a given pressure whereby the yarn wound on said take-up package is normally maintained against said drive roll with a predetermined driving force, the combination therewith of a. sensor means positioned in advance of said take-up package and engaged by the continuously moving yarn, said sensor means being movable in response to any increase in tension and linear speed of the yarn moving toward said take-up package, and b. operator means operable in response to movement of said sensor means for reducing pressure of said take-up package against said drive roll to thereby reduce the driving force applied to said take-up package by said drive roll and to thereby reduce the rotational speed of said take-up package and to maintain uniform tension and linear speed in the yArn being wound onto said take-up package.
Claim 8
Dependent Claim
215 words
In a machine for winding yarn at a substantially constant predetermined linear speed and under substantially constant tension conditions, said winding machine including a yarn supply source, a freely rotatable take-up package onto which the yarn is wound, yarn traversing means for feeding the yarn to and fro across said take-up package, a drive roll positioned beneath and rotating said take-up package by surface contact with the yarn wound thereon, and means supporting said take-up package against said drive roll with a given pressure whereby the yarn wound on said take-up package is normally maintained against said drive roll with a predetermined driving force, the combination therewith of a. sensor means positioned in advance of said take-up package and engaged by the continuously moving yarn, said sensor means being movable in response to any increase in tension and linear speed of the yarn moving toward said take-up package, and b. operator means operable in response to movement of said sensor means for reducing pressure of said take-up package against said drive roll to thereby reduce the driving force applied to said take-up package by said drive roll and to thereby reduce the rotational speed of said take-up package and to maintain uniform tension and linear speed in the yArn being wound onto said take-up package.
Claim 9
Dependent Claim
46 words
In an apparatus according to claim 6 wherein said take-up package is conical and is normally maintained in contact with said drive roll by the weight of said take-up package and by counterweight means, and wherein said operator means is operatively connected to said counterweight means.
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 |