US3656288A
Expired / Lapsed
US
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False twist texturizing method and apparatus
Assignee: Klinger Manufacturing Co Ltd
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Filing: 1969-12-11
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Granted: 1972-04-18
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Expires: 1989-12-11
Abstract
Abstract Yarn is false twisted first in one sense and then in the opposite sense to produce an essentially zero torque texturized yarn. For this purpose, false twist spindles are provided to twist the yarn in opposite senses.
Inventors
- 👤 Reginald Selby Gilchrist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:13
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0226
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
80 words
A method of crimping yarn on the run including the steps of heating the yarn, subjecting the yarn to a first false twisting operation in one direction so that the yarn is heated in its first twisted coNfiguration, and then subjecting the yarn to a second false twisting operation in the opposite direction without further heating, the yarn being oppositely twisted by the second false twisting operation while it still possesses sufficient heat to be at least partly permanently deformable.
Claim 2
Independent Claim
80 words
A method of crimping yarn on the run including the steps of heating the yarn, subjecting the yarn to a first false twisting operation in one direction so that the yarn is heated in its first twisted coNfiguration, and then subjecting the yarn to a second false twisting operation in the opposite direction without further heating, the yarn being oppositely twisted by the second false twisting operation while it still possesses sufficient heat to be at least partly permanently deformable.
Claim 3
Dependent Claim
24 words
A method as claimed in claim 1 wherein cooling of the yarn after said heating and before the first false twisting operation is impeded.
Claim 4
Dependent Claim
25 words
A method as claimed in claim 1 wherein the yarn is subjected during heating to a temperature of the order of 150* to 250* C.
Claim 5
Dependent Claim
21 words
A method as claimed in claim 1 wherein the twists imparted by the two false twisting operations are equal in magnitude.
Claim 6
Dependent Claim
128 words
Apparatus for crimping yarn comprising a first false twist device arranged to rotate the yarn in one direction, a heater so disposed as to heat the yarn as it travels to the first false twist device, a second false twist device arranged to rotate the yarn in the opposite direction, and guide means for guiding the yarn without further heating from the first false twist device to the second false twist device, each of the false twist devices comprising means defining an endless movable track provided with a surface for frictionally engaging the yarn, means for driving the track, and means for guiding the yarn into frictional engagement with the surface in a direction such that the surface moves transversely to the direction of movement of the yarn.
Claim 7
Dependent Claim
128 words
Apparatus for crimping yarn comprising a first false twist device arranged to rotate the yarn in one direction, a heater so disposed as to heat the yarn as it travels to the first false twist device, a second false twist device arranged to rotate the yarn in the opposite direction, and guide means for guiding the yarn without further heating from the first false twist device to the second false twist device, each of the false twist devices comprising means defining an endless movable track provided with a surface for frictionally engaging the yarn, means for driving the track, and means for guiding the yarn into frictional engagement with the surface in a direction such that the surface moves transversely to the direction of movement of the yarn.
Claim 8
Dependent Claim
101 words
Apparatus for crimping yarn, comprising means defining an endless movable track provided with a surface for frictionally engaging the yarn, means for driving the track, and means for guiding the yarn into frictional engagement with the surface in a first direction such that the surface moves transversely to the direction of movement of the yarn to twist the yarn in a predetermined sense and for then guiding the yarn into frictional engagement with the surface in a second direction such that the surface moves transversely to the direction of movement of the yarn to twist the yarn in the opposite sense.
Claim 9
Dependent Claim
101 words
Apparatus for crimping yarn, comprising means defining an endless movable track provided with a surface for frictionally engaging the yarn, means for driving the track, and means for guiding the yarn into frictional engagement with the surface in a first direction such that the surface moves transversely to the direction of movement of the yarn to twist the yarn in a predetermined sense and for then guiding the yarn into frictional engagement with the surface in a second direction such that the surface moves transversely to the direction of movement of the yarn to twist the yarn in the opposite sense.
Claim 10
Independent Claim
111 words
An apparatus for crimping yarn comprising a false twist device consisting of an endless movable track having a surface for frictionally engaging the yarn, means for advancing yarn under tension from a supply of yarn, guide means for guiding the yarn so that it crosses said surface substantially transversely to the direction of movement to the surface first in one direction whereby a first twist is imparted to the yarn in one direction and then in the opposite direction whereby a second twist is imparted to the yarn in the opposite direction, and a heater for heating the yarn passing in said one direction to the surface of the endless track.
Claim 11
Independent Claim
111 words
An apparatus for crimping yarn comprising a false twist device consisting of an endless movable track having a surface for frictionally engaging the yarn, means for advancing yarn under tension from a supply of yarn, guide means for guiding the yarn so that it crosses said surface substantially transversely to the direction of movement to the surface first in one direction whereby a first twist is imparted to the yarn in one direction and then in the opposite direction whereby a second twist is imparted to the yarn in the opposite direction, and a heater for heating the yarn passing in said one direction to the surface of the endless track.
Claim 12
Independent Claim
72 words
A method of crimping yarn on the run including the steps of false twisting the yarn a first time in one direction and heating the yarn while twisted, and then false twisting the yarn a second time in the opposite direction, the yarn being untwisted from the first false twisting operation and oppositely twisted by the second false twisting operation while it possesses sufficient heat to be at least partly permanently deformable.
Claim 13
Independent Claim
72 words
A method of crimping yarn on the run including the steps of false twisting the yarn a first time in one direction and heating the yarn while twisted, and then false twisting the yarn a second time in the opposite direction, the yarn being untwisted from the first false twisting operation and oppositely twisted by the second false twisting operation while it possesses sufficient heat to be at least partly permanently deformable.
Claim 14
Independent Claim
84 words
A method of crimping yarn on the run including the steps of heating the yarn, subjecting the yarn to a first false twisting operation in one direction so that the yarn is heated in its first twisted configuration, and then subjecting the yarn to a second false twisting operation in the opposite direction, the yarn being untwisted from the first false twisting operation and oppositely twisted by the second false twisting operation while it possess sufficient heat to be at least partly permanently deformable.
Claim 15
Independent Claim
84 words
A method of crimping yarn on the run including the steps of heating the yarn, subjecting the yarn to a first false twisting operation in one direction so that the yarn is heated in its first twisted configuration, and then subjecting the yarn to a second false twisting operation in the opposite direction, the yarn being untwisted from the first false twisting operation and oppositely twisted by the second false twisting operation while it possess sufficient heat to be at least partly permanently deformable.
Claim 16
Dependent Claim
24 words
A method as claimed in claim 9 further including the step of impeding any cooling of the yarn before the first false twisting operation.
Claim 17
Dependent Claim
25 words
A method as claimed in claim 9 wherein the yarn is subjected during heating to a temperature of the order of 150* to 250* C.
Claim 18
Dependent Claim
21 words
A method as claimed in claim 9 whereIn the twists imparted by the two false twisting operations are equal in magnitude.
Claim 19
Independent Claim
105 words
A method of crimping yarn on the run including the steps of heating and false twisting the yarn a first time in one direction so that the yarn is in a twisted configuration when being heated, and immediately false twisting the yarn a second time in the opposite direction so that the yarn is twisted in the opposite direction by the second false twisting simultaneously with being detwisted from the twist in said one direction imparted by the first false twisting, the yarn being oppositely twisted by the second false twisting operation while it still possesses sufficient heat to be at least partly permanently deformable.
Claim 20
Independent Claim
105 words
A method of crimping yarn on the run including the steps of heating and false twisting the yarn a first time in one direction so that the yarn is in a twisted configuration when being heated, and immediately false twisting the yarn a second time in the opposite direction so that the yarn is twisted in the opposite direction by the second false twisting simultaneously with being detwisted from the twist in said one direction imparted by the first false twisting, the yarn being oppositely twisted by the second false twisting operation while it still possesses sufficient heat to be at least partly permanently deformable.
Claim 21
Dependent Claim
16 words
A method according to claim 8, in which the yarn is comprised of a thermoplastic material.
Claim 22
Dependent Claim
17 words
A method according to claim 14, in which said thermoplastic material is a polyester or a polyamide.
Claim 23
Independent Claim
77 words
A method of crimping yarn on the run including the steps of false twisting the yarn a first time in one direction and heating the yarn while twisted, and then false twisting the yarn a second time in the opposite direction without heating the yarn between the first and second false twisting steps, the yarn being oppositely twisted by the second false twisting operation while it still possesses sufficient heat to be at least partly permanently deformable.
Claim 24
Independent Claim
77 words
A method of crimping yarn on the run including the steps of false twisting the yarn a first time in one direction and heating the yarn while twisted, and then false twisting the yarn a second time in the opposite direction without heating the yarn between the first and second false twisting steps, the yarn being oppositely twisted by the second false twisting operation while it still possesses sufficient heat to be at least partly permanently deformable.
Claim 25
Independent Claim
80 words
A method of crimping yarn on the run including the steps of heating the yarn, subjecting the yarn to a first false twisting operation in one direction so that the yarn is heated in its first twisted configuration, and then subjecting the yarn to a second false twisting operation in the opposite direction without further heating, the yarn being oppositely twisted by the second false twisting operation while it still possesses sufficient heat to be at least partly permanently deformable.
Claim 26
Independent Claim
80 words
A method of crimping yarn on the run including the steps of heating the yarn, subjecting the yarn to a first false twisting operation in one direction so that the yarn is heated in its first twisted configuration, and then subjecting the yarn to a second false twisting operation in the opposite direction without further heating, the yarn being oppositely twisted by the second false twisting operation while it still possesses sufficient heat to be at least partly permanently deformable.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |