US3577854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of representing the dial settings of an electronic yarn smoother
Assignee: Zellweger Uster AG
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Filing: 1968-12-24
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Granted: 1971-05-11
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Expires: 1988-12-24
Abstract
Abstract The dial settings of a yarn smoother, required to remove a preselected field of flaws, are determined by plotting a field of yarn flaws in a coordinate system; plotting a family of limit curves, each representing the locus of the flaws extracted by the yarn smoother when set at a preselected fixed reference length dial setting; placing the family of limit curves over the field of flaws; and shifting the limit curves, while maintaining coincidence of the ordinate axes of the field of flaws and the limit curves, to align one of said limit curves, as nearly as possible, with the flaws to be extracted. After a single limit curve is properly aligned with the flaws to be extracted, the proper dial settings are (1) the reference length corresponding to the aligned limit curve and (2) the value of the ordinate of the field of flaws graph intersected by the origin of the limit curve graph.
Inventors
- 👤 Ernst Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:05
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/36; G01N33/365
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
213 words
A method of representing the required dial settings of a yarn smoother in accordance with the size of the longitudinal and cross-sectional flaws to be extracted thereby, which comprises: illustrating a field of flaws in a coordinate system, wherein increasing flaw lengths are illustrated along a first axis and increasing flaw cross sections are illustrated along the second axis; plotting a limit curve in a coordinate system, said limit curve being derived from the operating characteristics of the yarn smoother and representing the locus with respect to the field of the flaws extracted by said yarn smoother when set at a predetermined fixed dial setting; placing said limit curve over said field of flaws so that the ordinate axis of said limit curve is coincident with said second axis of said field of flaws; and shifting said limit curve relative to said field of flaws, while maintaining coincidence of said ordinate and said second axes, to align said limit curve as nearly as possible with the longitudinal and cross-sectional flaws which are to be extracted, whereby the yarn smoother dial settings are represented by the reference dial settings corresponding to the aligned limit curve and the value of the cross-sectional flaw intersected by the origin of the coordinate system of the limit curve.
Claim 2
Independent Claim
213 words
A method of representing the required dial settings of a yarn smoother in accordance with the size of the longitudinal and cross-sectional flaws to be extracted thereby, which comprises: illustrating a field of flaws in a coordinate system, wherein increasing flaw lengths are illustrated along a first axis and increasing flaw cross sections are illustrated along the second axis; plotting a limit curve in a coordinate system, said limit curve being derived from the operating characteristics of the yarn smoother and representing the locus with respect to the field of the flaws extracted by said yarn smoother when set at a predetermined fixed dial setting; placing said limit curve over said field of flaws so that the ordinate axis of said limit curve is coincident with said second axis of said field of flaws; and shifting said limit curve relative to said field of flaws, while maintaining coincidence of said ordinate and said second axes, to align said limit curve as nearly as possible with the longitudinal and cross-sectional flaws which are to be extracted, whereby the yarn smoother dial settings are represented by the reference dial settings corresponding to the aligned limit curve and the value of the cross-sectional flaw intersected by the origin of the coordinate system of the limit curve.
Claim 3
Dependent Claim
39 words
A method according to claim 1, wherein said first axis is the abscissa axis, wherein said second axis is the ordinate axis, and wherein said predetermined fixed reference dial setting corresponds to the reference length of the longitudinal flaws.
Claim 4
Dependent Claim
17 words
The method according to claim 2, wherein at least one flaw characteristic is classified according to size.
Claim 5
Dependent Claim
25 words
A method according to claim 3, wherein at least one axis in the coordinate system of said field of flaws is in the logarithmical scale.
Claim 6
Dependent Claim
58 words
A method according to claim 4, wherein a family of limit curves are plotted in a coordinate system, each curve being derived from the operating characteristics of said yarn smoother and eAch of said limit curves representing the locus of the flaws extracted by said yarn smoother when set at a different predetermined fixed reference length dial setting.
Claim 7
Dependent Claim
18 words
A method according to claim 5, wherein at least one limit curve is plotted on a transparent medium.
Claim 8
Dependent Claim
30 words
A method according to claim 6, wherein a predetermined field of flaws and a predetermined family of limit curves are employed for each of a predetermined range of yarn sizes.
References Cited (Backward Citations)
US2512387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |