Patent US3894319A successfully refreshed from Google Patents.
US3894319A
Expired / Lapsed
US
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Apparatus for texturing continuous filament yarn
Assignee: Indian Head Inc
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Filing: 1973-06-01
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Granted: 1975-07-15
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Expires: 1993-06-01
Abstract
Abstract A method and apparatus for texturing continuous filament yarn wherein the yarn is fed at a controlled rate and under controlled tension into a confined crimping zone against a mass of crimped yarn therein causing the yarn to collapse longitudinally forming crimps which become part of such mass. Heat and pressure are applied to the yarn mass in the crimping zone to plastically deform the yarn and partially set the crimps. The crimped yarn mass is then fed at a controlled rate from the crimping zone into a setting zone. Heat and pressure are applied to the yarn mass in the setting zone to fully set the crimps. The pressure applied to the yarn mass in the setting zone is substantially only sufficient to keep the crimps closed during the final setting thereof. The crimped yarn mass is then fed from the setting zone into a cooling zone. The yarn mass is cooled in the cooling zone to a temperature below that at which the yarn undergoes any molecular structural alteration in the absence of the application of a substantial force thereto. Finally, the yarn is withdrawn at a controlled rate from the cooling zone in continuous filament form.
Inventors
- 👤 Alexander L Trifunovic
- 👤 William H Hills
- 👤 Milton H Borgman
- 👤 Emory P Mersereau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:11
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; D02G1/125
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
336 words
A stuffer crimper for crimping continuous filament yarn having a denier in the range of approximately 40-150, said crimper comprising: a housing; a crimping chamber secured to said housing and having a channel extending therethrough, said channel having a generally rectangular transverse cross-section; means for heating said chamber; a pair of opposed feed rolls rotatably mounted on said housing adjacent one end of said chamber for feeding yarn into said chamber channel, the long cross-sectional dimension of said channel extending parallel to the rotational axes of said feed rolls and the short cross-sectional dimension of said channel extending perpendicular to said axes, the ratio of said short cross-sectional dimension in inches to the denier of said yarn having a Minimum value of about 0.000667; at least one crimp control roll rotatably mounted on said housing and extending into said chamber channel, the portion of said channel between the feed rolls and the crimp control roll defining a confined crimping zone, whereby continuous filament yarn is fed into said crimping zone by the feed rolls against a core of crimped yarn therein causing the yarn to collapse longitudinally and fold over forming crimps which become part of said core, the crimp control roll being spaced from the feed rolls along said channel a distance no greater than the distance required for the yarn to be plastically deformed and partially set in said crimping zone, the portion of said channel between the crimp control roll and the end of the chamber opposite the feed rolls defining a setting zone, whereby said core is fed into the setting zone by the crimp control roll and the yarn is fully set therein; means for rotatably driving said pair of feed rolls at the same rotational velocity; and means for rotatably driving said crimp control roll independently of said feed rolls, whereby the pressure on the crimped yarn core in said crimping zone may be controlled by regulating the relative rotational velocities of the feed rolls and the crimp control roll.
Claim 2
Dependent Claim
336 words
A stuffer crimper for crimping continuous filament yarn having a denier in the range of approximately 40-150, said crimper comprising: a housing; a crimping chamber secured to said housing and having a channel extending therethrough, said channel having a generally rectangular transverse cross-section; means for heating said chamber; a pair of opposed feed rolls rotatably mounted on said housing adjacent one end of said chamber for feeding yarn into said chamber channel, the long cross-sectional dimension of said channel extending parallel to the rotational axes of said feed rolls and the short cross-sectional dimension of said channel extending perpendicular to said axes, the ratio of said short cross-sectional dimension in inches to the denier of said yarn having a Minimum value of about 0.000667; at least one crimp control roll rotatably mounted on said housing and extending into said chamber channel, the portion of said channel between the feed rolls and the crimp control roll defining a confined crimping zone, whereby continuous filament yarn is fed into said crimping zone by the feed rolls against a core of crimped yarn therein causing the yarn to collapse longitudinally and fold over forming crimps which become part of said core, the crimp control roll being spaced from the feed rolls along said channel a distance no greater than the distance required for the yarn to be plastically deformed and partially set in said crimping zone, the portion of said channel between the crimp control roll and the end of the chamber opposite the feed rolls defining a setting zone, whereby said core is fed into the setting zone by the crimp control roll and the yarn is fully set therein; means for rotatably driving said pair of feed rolls at the same rotational velocity; and means for rotatably driving said crimp control roll independently of said feed rolls, whereby the pressure on the crimped yarn core in said crimping zone may be controlled by regulating the relative rotational velocities of the feed rolls and the crimp control roll.
Claim 3
Dependent Claim
22 words
A stuffer crimper as recited in claim 1, wherein said chamber is made from a metallic material having relatively high heat conductivity.
Claim 4
Dependent Claim
50 words
A stuffer crimper as recited in claim 1; comprising a pair of opposed crimp control rolls, the peripheries of said crimp control rolls being spaced apart within said chamber channel; and wherein said crimp control roll driving means drives said pair of crimp control rolls at the same rotational velocity.
Claim 5
Dependent Claim
25 words
A stuffer crimper as recited in claim 1, wherein a portion of said chamber channel adjacent said feed rolls has a generally elliptical transverse cross-section.
Claim 6
Dependent Claim
28 words
A stuffer crimper as recited in claim 1, wherein said crimp control roll is mounted for rotation about an axis parallel to the axes of said feed rolls.
Claim 7
Dependent Claim
24 words
A stuffer crimper as recited in claim 1, further comprising means for pre-heating the yarn before the yarn is fed into said chamber channel.
Claim 8
Dependent Claim
27 words
A stuffer crimper as recited in claim 1, further comprising means for applying controlled tension to the yarn before the yarn is fed into said chamber channel.
Claim 9
Dependent Claim
27 words
A stuffer crimper as recited in claim 1, further comprising a pair of felt pads, said pads being interposed between said respective feed rolls and said chamber.
Claim 10
Dependent Claim
24 words
A stuffer crimper as recited in claim 1, further comprising means for feeding yarn to said feed rolls and traversing the yarn axially thereof.
Claim 11
Dependent Claim
39 words
A stuffer crimper as recited in claim 9, wherein said feeding means comprises a rotatably mounted cam having a helical slot therein, said cam being mounted for rotation about an axis parallel to the axes of said feed rolls.
Claim 12
Dependent Claim
26 words
A stuffer crimper as recited in claim 10, wherein said cam comprises a pair of axially opposed guiding members each defining one side of said slot.
Claim 13
Dependent Claim
36 words
A stuffer crimper as recited in claim 11, wherein said guiding members are connected together by a plurality of rods, whereby the yarn rides on said rods as the yarn is fed between the guiding members.
Claim 14
Dependent Claim
48 words
A stuffer crimper as recited in claim 9, wherein said feeding means comprises a pair of circumferentially and axially opposed guiding members each defining a yarn guiding surface, said members being connected together and mounted for rotation about an axis parallel to the axes of said feed rolls.
Claim 15
Dependent Claim
108 words
A stuffer crimper as recited in claim 13, wherein a generally elliptically shaped cam is axially interposed between said guiding members, whereby the yarn rides on said cam as the yarn is fed between the guiding members; and wherein the portions of said cam along the long axis thereof engage the yarn as the yarn is fed through the midportion of the feed rolls and the portions of said cam along the short axis thereof engage the yArn as the yarn is fed through the end portions of the feed rolls, whereby the length of yarn between the feeding means and the feed rolls is maintained substantially constant.
Claim 16
Dependent Claim
326 words
A stuffer crimper for crimping continuous filament yarn comprising: a housing having at least two perpendicularly oriented reference surfaces thereon; a crimping chamber having a channel extending therethrough and at least two members projecting therefrom, said members defining a line parallel to said channel and the outer ends thereof being the same distance from a wall of said channel, said members contacting said housing reference surfaces for accurately positioning said chamber with respect to said housing along two perpendicular axes; means for securing said chamber to said housing for adjustment along an axis perpendicular to said two axes; means for heating said chamber; a pair of opposed feed rolls rotatably mounted on said housing adjacent one end of said chamber for feeding yarn into said chamber channel; at least one crimp control roll rotatably mounted on said housing and extending into said chamber channel, said crimp control roll being spaced from said feed rolls along said channel, the portion of said channel between the feed rolls and the crimp control roll defining a confined crimping zone, whereby continuous filament yarn is fed into said crimping zone by the feed rolls against a core of crimped yarn therein causing the yarn to collapse longitudinally and fold over forming crimps which become part of said core and the crimps are partially set in the crimping zone, the portion of said channel between the crimp control roll and the end of the chamber opposite the feed rolls defining a setting zone, whereby said core is fed into said setting zone by the crimp control roll and crimps are fully set therein; means for rotatably driving said pair of feed rolls at the same rotational velocity; and means for rotatably driving said crimp control roll independently of said feed rolls, whereby the pressure on the crimped yarn core in said crimping zone may be controlled by regulating the relative rotational velocities of the feed rolls and the crimp control roll.
Claim 17
Dependent Claim
326 words
A stuffer crimper for crimping continuous filament yarn comprising: a housing having at least two perpendicularly oriented reference surfaces thereon; a crimping chamber having a channel extending therethrough and at least two members projecting therefrom, said members defining a line parallel to said channel and the outer ends thereof being the same distance from a wall of said channel, said members contacting said housing reference surfaces for accurately positioning said chamber with respect to said housing along two perpendicular axes; means for securing said chamber to said housing for adjustment along an axis perpendicular to said two axes; means for heating said chamber; a pair of opposed feed rolls rotatably mounted on said housing adjacent one end of said chamber for feeding yarn into said chamber channel; at least one crimp control roll rotatably mounted on said housing and extending into said chamber channel, said crimp control roll being spaced from said feed rolls along said channel, the portion of said channel between the feed rolls and the crimp control roll defining a confined crimping zone, whereby continuous filament yarn is fed into said crimping zone by the feed rolls against a core of crimped yarn therein causing the yarn to collapse longitudinally and fold over forming crimps which become part of said core and the crimps are partially set in the crimping zone, the portion of said channel between the crimp control roll and the end of the chamber opposite the feed rolls defining a setting zone, whereby said core is fed into said setting zone by the crimp control roll and crimps are fully set therein; means for rotatably driving said pair of feed rolls at the same rotational velocity; and means for rotatably driving said crimp control roll independently of said feed rolls, whereby the pressure on the crimped yarn core in said crimping zone may be controlled by regulating the relative rotational velocities of the feed rolls and the crimp control roll.
Claim 18
Dependent Claim
43 words
A stuffer crimper as recited in claim 15; wherein said housing comprises a front housing member and a rear housing member, said front member being movably connected to said rear member; and wherein said housing reference surfaces are on said rear housing member.
Claim 19
Dependent Claim
328 words
A stuffer crimper for crimping continuous filament yarn having a denier in the range of approximately 40-150, said crimper comprising: a housing; a crimping chamber secured to said housing and having a channel extending therethrough, said channel having a generally rectangular transverse cross-section; means for heating said chamber; a pair of opposed feed rolls rotatably mounted on said housing adjacent one end of said chamber for feeding yarn into said chamber channel, the long cross-sectional dimension of said channel extending parallel to the rotational axes of said feed rolls and the short cross-sectional dimension of said channel extending perpendicular to said axes, the ratio of said short cross-sectional dimension in inches to the denier of said yarn being in the range of from about 0.000667 to about 0.00425; at least one crimp control roll rotatably mounted on said housing and extending into said chamber channel, said crimp control roll being spaced from said feed rolls along said channel, the portion of said channel between the feed rolls and the crimp control roll defining a confined crimping zone, whereby continuous filament yarn is fed into said crimping zone by the feed rolls against a core of crimped yarn therein causing the yarn to collapse longitudinally and fold over forming crimps which become part of said core and the crimps are partially set in the crimping zone, the portion of said channel between the crimp control roll and the end of the chamber opposite the feed rollS defining a setting zone, whereby said core is fed into said setting zone by the crimp control roll and the crimps are fully set therein; means for rotatably driving said pair of feed rolls at the same rotational velocity; and means for rotatably driving said crimp control roll independently of said feed rolls, whereby the pressure on the crimped yarn core in said crimping zone may be controlled by regulating the relative rotational velocities of the feed rolls and the crimp control roll.
Claim 20
Dependent Claim
328 words
A stuffer crimper for crimping continuous filament yarn having a denier in the range of approximately 40-150, said crimper comprising: a housing; a crimping chamber secured to said housing and having a channel extending therethrough, said channel having a generally rectangular transverse cross-section; means for heating said chamber; a pair of opposed feed rolls rotatably mounted on said housing adjacent one end of said chamber for feeding yarn into said chamber channel, the long cross-sectional dimension of said channel extending parallel to the rotational axes of said feed rolls and the short cross-sectional dimension of said channel extending perpendicular to said axes, the ratio of said short cross-sectional dimension in inches to the denier of said yarn being in the range of from about 0.000667 to about 0.00425; at least one crimp control roll rotatably mounted on said housing and extending into said chamber channel, said crimp control roll being spaced from said feed rolls along said channel, the portion of said channel between the feed rolls and the crimp control roll defining a confined crimping zone, whereby continuous filament yarn is fed into said crimping zone by the feed rolls against a core of crimped yarn therein causing the yarn to collapse longitudinally and fold over forming crimps which become part of said core and the crimps are partially set in the crimping zone, the portion of said channel between the crimp control roll and the end of the chamber opposite the feed rollS defining a setting zone, whereby said core is fed into said setting zone by the crimp control roll and the crimps are fully set therein; means for rotatably driving said pair of feed rolls at the same rotational velocity; and means for rotatably driving said crimp control roll independently of said feed rolls, whereby the pressure on the crimped yarn core in said crimping zone may be controlled by regulating the relative rotational velocities of the feed rolls and the crimp control roll.
Claim 21
Dependent Claim
26 words
A stuffer crimper as recited in claim 17, wherein said short cross-sectional dimension is in the range of from about 0.100 inch to about 0.170 inch.
Claim 22
Dependent Claim
22 words
A stuffer crimper as recited in claim 17, wherein said ratio is in the range of from about 0.001 to about 0.004.
Claim 23
Dependent Claim
17 words
A stuffer crimper as recited in claim 19, wherein said short cross-sectional dimension is about 0.160 inch.
Claim 24
Dependent Claim
72 words
A stuffer crimper as recited in claim 1, further comprising a cooling tower affixed at one end thereof to said chamber at the end of the chamber opposite said feed rolls and having a channel extending therethrough aligned with said chamber channel, said tower channel defining a cooling zone, whereby the crimped yarn core is fed into said cooling zone after passage through said setting zone and the yarn is cooled therein.
Claim 25
Dependent Claim
18 words
A stuffer crimper as recited in claim 21, further comprising means for withdrawing yarn from said tower channel.
Claim 26
Dependent Claim
15 words
A stuffer crimper as recited in claim 22, wherein said withdrawing means comprises a winder.
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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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |