Patent US3812665A successfully refreshed from Google Patents.
US3812665A
Expired / Lapsed
US
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Method and apparatus for forming random slubs in yarn
Assignee: Eastman Kodak Co
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Filing: 1972-12-22
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Granted: 1974-05-28
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Expires: 1992-12-22
Abstract
Abstract Method and apparatus for forming in a yarn random slubs of random length and random diameter at random spaced intervals along the yarn. A slubbing yarn strand at a predetermined percent of overfeed and a core yarn strand under predetermined tension are introduced through separate inlets into one end of a slubbing chamber. The inlet for the slubbing yarn strand is a jet, which introduces into the chamber along with the slubbing yarn strand a first stream flow of compressible liquid. The outlet from the chamber for both yarn strands is a second jet, which introduces into the chamber a second stream flow of compressible liquid, the two stream flows being directed generally toward each other. The stream flows from the jets are adjusted to support the slubbing yarn strand generally free from contact with the chamber wall, and to move the slubbing yarn strand freely about in the chamber relative to the core yarn strand, forming slubs and entwining and entangling with the core yarn strand. The two strands exit together from the chamber through the second jet countercurrent to the second stream flow consolidating the slubbing yarn strand with the core yarn strand, and thus a more unitized yarn bundle is formed.
Inventors
- 👤 K Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:59
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/162
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
295 words
An apparatus adapted to form in a yarn slubs of random length and random diameter at random spaced intervals along the yarn, and comprising: an enclosed slubbing chamber defining at one end portion a first inlet opening through which a slubbing yarn strand may be introduced into the chamber and a second inlet opening through which a core yarn strand may be introduced into the chamber under tension for movement through the chamber along with the slubbing yarn strand, and defining at the opposite end portion an outlet opening through which the slubbing yarn strand and core yarn strand exit together from the chamber; means for introducing the slubbing yarn strand into the first inlet opening at a predetermined percent of overfeed; means for continuously introducing into the slubbing chamber at one end portion thereof a first stream flow of compressible fluid and at the opposite end portion thereof a second stream flow of compressible fluid, the two stream flows being directed toward each other to create swirling turbulent stream flows of said compressible fluid, and adjusting such stream flows a. to support the slubbing yarn strand generally free from contact with the chamber wall, and b. to move the slubbing yarn strand freely about in the chamber relative to the core yarn strand, the slubbing yarn strand forming slubs and entwining and entangling with the core yarn strand; said slubbing chamber further defining venting openings adjacent the end portions of the slubbing chamber and through which venting openings the compressible fluid is exhausted in a controlled manner from the chamber; and means for moving the slubbing yarn strand and core yarn strand through and from the slubbing chamber and countercurrent to the second stream flow as the yarn strands move out of the chamber.
Claim 2
Independent Claim
295 words
An apparatus adapted to form in a yarn slubs of random length and random diameter at random spaced intervals along the yarn, and comprising: an enclosed slubbing chamber defining at one end portion a first inlet opening through which a slubbing yarn strand may be introduced into the chamber and a second inlet opening through which a core yarn strand may be introduced into the chamber under tension for movement through the chamber along with the slubbing yarn strand, and defining at the opposite end portion an outlet opening through which the slubbing yarn strand and core yarn strand exit together from the chamber; means for introducing the slubbing yarn strand into the first inlet opening at a predetermined percent of overfeed; means for continuously introducing into the slubbing chamber at one end portion thereof a first stream flow of compressible fluid and at the opposite end portion thereof a second stream flow of compressible fluid, the two stream flows being directed toward each other to create swirling turbulent stream flows of said compressible fluid, and adjusting such stream flows a. to support the slubbing yarn strand generally free from contact with the chamber wall, and b. to move the slubbing yarn strand freely about in the chamber relative to the core yarn strand, the slubbing yarn strand forming slubs and entwining and entangling with the core yarn strand; said slubbing chamber further defining venting openings adjacent the end portions of the slubbing chamber and through which venting openings the compressible fluid is exhausted in a controlled manner from the chamber; and means for moving the slubbing yarn strand and core yarn strand through and from the slubbing chamber and countercurrent to the second stream flow as the yarn strands move out of the chamber.
Claim 3
Dependent Claim
120 words
An apparatus as defined in claim 1, and wherein said means for continuously introducing said stream flows of compressible fluid includes: a first jet means positioned within the first inlet opening of the slubbing chamber and adapted to introduce into the chamber one of the stream flows of compressible fluid and to receive therethrough and feed into the chamber along with the compressible fluid the slubbing yarn strand; and a second jet means positioned within the outlet opening of the slubbing chamber and adapted to introduce into the chamber another of the stream flows of compressible fluid and to receive therethrough countercurrent to the stream flow from the second jet means the yarn strands as they exit from the chamber.
Claim 4
Dependent Claim
29 words
An apparatus as defined in claim 2, and wherein the axis of the first jet means is offset a predetermined distance from the axis of the second jet means.
Claim 5
Dependent Claim
27 words
An apparatus as defined in claim 2, and wherein the second jet means has a greater stReam flow than the stream flow of the first jet means.
Claim 6
Dependent Claim
44 words
An apparatus as defined in claim 2, and wherein said first jet means has a stream flow of compressible fluid of about 3 to 5 p.s.i.g. and the second jet means has a stream flow of compressible fluid of about 10 to 15 p.s.i.g.
Claim 7
Dependent Claim
64 words
An apparatus as defined in claim 2, and further comprising an auxiliary yarn guide within the slubbing chamber, and positioned in centered relation at the inlet of the second jet means, the auxiliary yarn guide having a small diameter tube adapted to receive and guide therethrough the yarn strands, and a support means for the tube to hold the tube in said centered relation.
Claim 8
Dependent Claim
19 words
An apparatus as defined in claim 1, and wherein the interior of the slubbing chamber is cylindrical in configuration.
Claim 9
Dependent Claim
44 words
An apparatus as defined in claim 1, and wherein said venting openings are defined in the interior wall of the slubbing chamber as slits of predetermined width and length and extend in a direction non-parallel with respect to the longitudinal axis of the chamber.
Claim 10
Dependent Claim
37 words
An apparatus as defined in claim 1 and further comprising means for enclosing the venting openings and providing a closed path outlet for the compressible fluid as it is exhausted from the chamber through the venting openings.
Claim 11
Dependent Claim
133 words
An apparatus as defined in claim 1, and wherein said means for introducing the slubbing yarn strand into the first inlet opening includes a driving roll arrangement for drivingly engaging the slubbing yarn strand, and the apparatus further comprising a movable yarn guide means for shifting the slubbing yarn strand out of driving engagement with the driving roll arrangement and for shifting the core yarn strand into driving engagement with the driving roll arrangement, thereby changing the slubbing yarn strand to a core yarn strand and the core yarn strand into a slubbing yarn strand; and a third jet means positioned within the second inlet means and adapted when inoperative to serve as an inlet for a core yarn strand and when operative to serve as an inlet for a slubbing yarn strand.
Claim 12
Dependent Claim
25 words
An apparatus as defined in claim 1, and wherein the predetermined percent of overfeed is in the range of about 10 percent to 30 percent.
Claim 13
Independent Claim
222 words
The method of forming in a yarn slubs of random length and random diameter at random spaced intervals along the yarn, said method comprising: introducing into the enclosed chamber at one end portion thereof a first stream flow of compressible fluid and introducing into the enclosed chamber at the opposite end portion thereof a second stream flow of compressible fluid, and directing the two streams flows toward each other and thereby forming swirling turbulent stream flows of compressible fluid; introducing into the chamber at said one end portion a slubbing yarn strand at a predetermined percent of overfeed and a core yarn strand under predetermined tension, the slubbing yarn strand being introduced through and along with the first stream flow; adjusting the first and second stream flows a. to support the slubbing yarn strand generally free from contact with the chamber wall, and b. to move the slubbing yarn strand freely about in the chamber relative to the core yarn strand, the slubbing yarn strand forming slubs and entwining and entangling with the core yarn strand; exhausting from the enclosed chamber the stream flows of compressible fluid in a controlled manner; and removing the slubbing yarn strand and the core yarn strand from the enclosed chamber at said opposite end portion through and countercurrent to the second stream flow of compressible fluid.
Claim 14
Independent Claim
222 words
The method of forming in a yarn slubs of random length and random diameter at random spaced intervals along the yarn, said method comprising: introducing into the enclosed chamber at one end portion thereof a first stream flow of compressible fluid and introducing into the enclosed chamber at the opposite end portion thereof a second stream flow of compressible fluid, and directing the two streams flows toward each other and thereby forming swirling turbulent stream flows of compressible fluid; introducing into the chamber at said one end portion a slubbing yarn strand at a predetermined percent of overfeed and a core yarn strand under predetermined tension, the slubbing yarn strand being introduced through and along with the first stream flow; adjusting the first and second stream flows a. to support the slubbing yarn strand generally free from contact with the chamber wall, and b. to move the slubbing yarn strand freely about in the chamber relative to the core yarn strand, the slubbing yarn strand forming slubs and entwining and entangling with the core yarn strand; exhausting from the enclosed chamber the stream flows of compressible fluid in a controlled manner; and removing the slubbing yarn strand and the core yarn strand from the enclosed chamber at said opposite end portion through and countercurrent to the second stream flow of compressible fluid.
Claim 15
Dependent Claim
30 words
The method as defined in claim 12, and comprising introducing at said opposite end portion a greater stream flow of compressible fluid than the first stream flow of compressible fluid.
Claim 16
Dependent Claim
42 words
The method as defined in claim 12, and wherein said first stream flow is introduced into the enclosed chamber at about 3 to 5 p.s.i.g. and said sEcond stream flow is introduced into the enclosed chamber at about 10 to 15 p.s.i.g.
Claim 17
Dependent Claim
29 words
The method as defined in claim 12, and wherein said first and second stream flows of compressible fluid are introduced into the enclosed chamber directly opposed to each other.
Claim 18
Dependent Claim
90 words
The method as defined in claim 12, and wherein said first and second stream flows of compressible fluid are introduced into the enclosed chamber offset with respect to each other. 17. The method as defined in claim 12, and further adjusting the amount of the first and second stream flows until the slubbing yarn strand gathers with the core yarn strand at about one-quarter of the length of the enclosed chamber from the end portion at which the slubbing yarn strand and core yarn strand are introduced into the chamber.
Claim 19
Dependent Claim
26 words
A yarn slub product comprising a slubbing yarn strand and a core yarn strand, the product made in accordance with the method defined in claim 12.
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |