US3903682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for initiating operation of a combined drawing and texturing machine for yarn
Assignee: Ateliers Roannais de Constructions Textiles SA
•
Filing: 1974-01-04
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Granted: 1975-09-09
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Expires: 1994-01-04
Abstract
Abstract A machine which combines drawing and texturing operations is equipped with a yarn launching device with which the yarn is initially wrapped partially around a heating element before the yarn is drawn and textured. This is accomplished by a curved bar which has yarn engaging members at opposite ends thereof and which pivots over the heating element to wrap the yarn partially therearound. An arm projects from the curved bar and also has a yarn engaging member thereon which deflects the yarn upstream of the heating element away from the heating element. After the drawing and texturing operations are commenced, the curved bar and arm are returned to a rest position to release the yarn from engagement with the heating element.
Inventors
- 👤 Henri Crouzet
- 👤 Jean-Claude Dupeuble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:51
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0266; D02G1/0273
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
228 words
An apparatus for drawing and texturing synthetic thermoplastic yarn by false twisting the yarn, wherein the drawing and texturing are performed simultaneously and wherein the apparatus includes means for supplying the synthetic yarn, a heated twist-setting member for setting a twist in the yarn, a heating assembly upstream of the heated twist-setting member, a false twist spindle, a yarn feeder situated downstream of the spindle and means for winding up the resulting textured yarn; the improvement in which said heating assembly comprises: a heating element; a curved bar positioned and configured to partially surround the heating element; means for mounting the curved bar to pivot about one end so as to overlie said heating element; means for engaging and deflecting the yarn, disposed in spaced relation on said bar to accommodate the heating element therebetween when said curved bar overlies said heating element to thereby hold the yarn in engagement with said heating element; arm means connected to said curved bar means at the pivoted edge of said curved bar means, said arm means having means thereon for engaging and deflecting the yarn away from the heating element upon pivoting the curved bar; and means associated with said curved bar and said arm means for moving said curved bar and said arm means to pivot and carry the yarn into and out of engagement with the heating element.
Claim 2
Independent Claim
228 words
An apparatus for drawing and texturing synthetic thermoplastic yarn by false twisting the yarn, wherein the drawing and texturing are performed simultaneously and wherein the apparatus includes means for supplying the synthetic yarn, a heated twist-setting member for setting a twist in the yarn, a heating assembly upstream of the heated twist-setting member, a false twist spindle, a yarn feeder situated downstream of the spindle and means for winding up the resulting textured yarn; the improvement in which said heating assembly comprises: a heating element; a curved bar positioned and configured to partially surround the heating element; means for mounting the curved bar to pivot about one end so as to overlie said heating element; means for engaging and deflecting the yarn, disposed in spaced relation on said bar to accommodate the heating element therebetween when said curved bar overlies said heating element to thereby hold the yarn in engagement with said heating element; arm means connected to said curved bar means at the pivoted edge of said curved bar means, said arm means having means thereon for engaging and deflecting the yarn away from the heating element upon pivoting the curved bar; and means associated with said curved bar and said arm means for moving said curved bar and said arm means to pivot and carry the yarn into and out of engagement with the heating element.
Claim 3
Dependent Claim
15 words
An apparatus according to claim 1, wherein the heating element comprises a heated metallic cylinder.
Claim 4
Dependent Claim
25 words
An apparatus according to claim 1 wherein the engaging and deflecting means bring the yarn into contact with the heating element over a substantial arc.
Claim 5
Dependent Claim
14 words
An apparatus according to claim 1, wherein the deflecting elements comprise diabolo-shaped yarn guides.
Claim 6
Dependent Claim
13 words
An apparatus according to claim 4, wherein the diabolo-shaped yarn guides are stationary.
Claim 7
Dependent Claim
26 words
An apparatus according to claim 1, wherein the heating element is situated upstream of the yarn feeder which is situated upstream of the heated twist-setting member.
Claim 8
Dependent Claim
30 words
An apparatus according to claim 1, wherein the heating element is situated between the heated twist-setting member and the yarn feeder which is situated upstream of the heated twist-setting member.
Claim 9
Dependent Claim
24 words
An apparatus according to claim 6, wherein the arm is connected to the yarn feeder which is situated upstream of the heated twist-setting member.
References Cited (Backward Citations)
US3166822A
Cited
US3443371A
Cited
US3638411A
Cited
US3796036A
Cited
US3729916A
Cited
US3733801A
Cited
US3766726A
Cited
US3793817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |