US3732603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for laying down the fiber hairiness of textile yarns
Assignee: BI/MS HOLDINGS I Inc A DE CORP
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Filing: 1971-11-12
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Granted: 1973-05-15
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Expires: 1991-11-12
Abstract
Abstract The surface hairiness, or fuzziness of staple spun yarn is reduced during a sizing operation by passing individual strands of the wet sized yarn through and in contact with the surfaces of the specially designed circumferential grooves in the surface of a cylindrical roller rotating in a direction opposite to the direction of the yarn''s travel so that the higher linear speed of the roller exerts a strong opposing wiping, squeezing force on the yarn moving counter to the surface speed of the inner walls of the grooves of the roller. Under certain circumstances, where modified performance is desired, the grooved roller may be rotated in the same direction as the yarn travels.
Inventors
- 👤 W Iliman
- 👤 C Hyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:18
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
184 words
A method of treating spun yarn having a predetermined average cross-sectional diameter and composed of fibers at least some of which project in random fashion outwardly from the periphery of the yarn surface, said method comprising the steps of: applying a sizing solution to the yarn, generally tangentially passing the yarn through and in contact with the smooth surfaces of a groove formed about a circumference of a rotating roller, the width dimension of the groove being such that said yarn is subjected to a compressive force during at least a portion of the yarn''s passage through the groove and the depth dimension of the groove being greater than the largest cross-sectional diameter of the yarn, rotating said roller about its longitudinal axis at an angular velocity such that the surfaces of the groove move at a linear velocity that results in a differential between it and the velocity with which the yarn passes through the groove to impart a resistive drag to the projecting fibers whereby the randomly projecting fibers will be helically wrapped about the yarn''s surface; and subsequently drying the yarn.
Claim 2
Independent Claim
184 words
A method of treating spun yarn having a predetermined average cross-sectional diameter and composed of fibers at least some of which project in random fashion outwardly from the periphery of the yarn surface, said method comprising the steps of: applying a sizing solution to the yarn, generally tangentially passing the yarn through and in contact with the smooth surfaces of a groove formed about a circumference of a rotating roller, the width dimension of the groove being such that said yarn is subjected to a compressive force during at least a portion of the yarn''s passage through the groove and the depth dimension of the groove being greater than the largest cross-sectional diameter of the yarn, rotating said roller about its longitudinal axis at an angular velocity such that the surfaces of the groove move at a linear velocity that results in a differential between it and the velocity with which the yarn passes through the groove to impart a resistive drag to the projecting fibers whereby the randomly projecting fibers will be helically wrapped about the yarn''s surface; and subsequently drying the yarn.
Claim 3
Dependent Claim
29 words
The method as claimed in claim 1 including the step of rotating the roller in a direction opposite to the direction of travel of the yarn through the groove.
Claim 4
Dependent Claim
30 words
The method as claimed in claim 1 including the step of rotating the roller in a direction the same as the direction of travel of the yarn through the groove.
Claim 5
Dependent Claim
47 words
The method as claimed in claim 1 including the step of cleaning the groove surfaces by continuously directing a sheet of vapor, under pressure and substantially free of liquid condensate, against the roller''s surfaces in a region following the point at which the yarn leaves the groove.
Claim 6
Dependent Claim
12 words
The method as claimed in claim 4 wherein said vapor is steam.
Claim 7
Dependent Claim
26 words
The method as claimed in claim 1 wherein a plurality of yarns are treated and a corresponding plurality of said grooves are provided on said roller.
Claim 8
Dependent Claim
17 words
The method as claimed in claim 6 including the step of providing a plurality of grooved rollers.
Claim 9
Dependent Claim
29 words
The method as claimed in claim 7 including the step of rotating each roller in a direction opposite to the direction of travel of yarns through the respective grooves.
Claim 10
Dependent Claim
30 words
The method as claimed in claim 7 including the step of rotating each roller in a direction the same as the direction of travel of yarns through the respective grooves.
Claim 11
Dependent Claim
51 words
The method as claimed in claim 8 including the step of continuously directing a stream of vapor under pressure and substantially free of liquid condensate against the surfaces of each roller in a region following the point at which the yarns leave their respective grooves to clean the respective groove surfaces.
Claim 12
Dependent Claim
146 words
In an apparatus for treating a plurality of spun yarns including size-applying means, yarn-drying means and means for transporting the yarns from said size-applying means to said drying means, said yarns being of the type having generally circular cross sections of a predetermined average cross-sectional diameter, the improvement comprising a substantially cylindrically shaped roller having a plurality of circumferentially formed, smooth-surfaced grooves evenly spaced along the longitudinal axis thereof, each groove having a depth greater than said diameter and width which varies uniformly from the base thereof to the rim such that at least a radially inwardmost portion of each groove has a width that is less than said diameter, said roller being disposed between said size-applying means and said drying means with its longitudinal axis generally transverse to the direction of travel of said yarns, and means for rotating said roller about its longitudinal axis.
Claim 13
Dependent Claim
146 words
In an apparatus for treating a plurality of spun yarns including size-applying means, yarn-drying means and means for transporting the yarns from said size-applying means to said drying means, said yarns being of the type having generally circular cross sections of a predetermined average cross-sectional diameter, the improvement comprising a substantially cylindrically shaped roller having a plurality of circumferentially formed, smooth-surfaced grooves evenly spaced along the longitudinal axis thereof, each groove having a depth greater than said diameter and width which varies uniformly from the base thereof to the rim such that at least a radially inwardmost portion of each groove has a width that is less than said diameter, said roller being disposed between said size-applying means and said drying means with its longitudinal axis generally transverse to the direction of travel of said yarns, and means for rotating said roller about its longitudinal axis.
Claim 14
Dependent Claim
39 words
The apparatus as claimed in claim 11 wherein said portion of each of said grooves having a width less than said diameter of said yarn extends from the base of each groove to approximately half of the depth thereof.
Claim 15
Dependent Claim
28 words
The apparatus as claimed in claim 11 wherein the depth of each of said grooves is between four and five times greater than said diameter of the yarn.
Claim 16
Dependent Claim
82 words
The apparatus as claimed in claim 11 wherein said roller comprises a plurality of circular plate segments each having a central aperture for receiving a shaft, each of said plate segments being formed with a central disc portion of predetermined radius, the surface portions of said plate segments beyond said disc portions being tapered toward each other so that when said plate segments are fixed on a shaft the spaces existing between said tapered portions will define said grooves of said roller.
Claim 17
Dependent Claim
168 words
In an apparatus for sizing a plurality of spun yarns including size-applying means, yarn-drying means and means for transporting the yarns from said size-applying means to said drying means, said yarns being of the type having generally circular cross sections of a predetermined average diameter, the improvement comprising a substantially cylindrically shaped roller having a plurality of circumferentially formed, smooth-surfaced grooves evenly spaced along the longitudinal axis thereof, each groove having a depth between four and five times greater than said average diameter of said yarns and a width which varies uniformly from the base thereof to the rim such that approximately the radially inward half of the depth of each groove has a width that is less than said yarn diameter, said roller being disposed between said size-applying means and said drying means with its longitudinal axis generally transverse to the direction of travel of said yarns, and means for rotating said roller about its longitudinal axis in a direction opposite to the direction of yarn travel.
Claim 18
Dependent Claim
168 words
In an apparatus for sizing a plurality of spun yarns including size-applying means, yarn-drying means and means for transporting the yarns from said size-applying means to said drying means, said yarns being of the type having generally circular cross sections of a predetermined average diameter, the improvement comprising a substantially cylindrically shaped roller having a plurality of circumferentially formed, smooth-surfaced grooves evenly spaced along the longitudinal axis thereof, each groove having a depth between four and five times greater than said average diameter of said yarns and a width which varies uniformly from the base thereof to the rim such that approximately the radially inward half of the depth of each groove has a width that is less than said yarn diameter, said roller being disposed between said size-applying means and said drying means with its longitudinal axis generally transverse to the direction of travel of said yarns, and means for rotating said roller about its longitudinal axis in a direction opposite to the direction of yarn travel.
Claim 19
Dependent Claim
24 words
The apparatus as claimed in claim 11 wherein a plurality of said rollers are provided disposed between said size-applying means and said drying means.
Claim 20
Dependent Claim
45 words
The apparatus as claimed in claim 16 wherein means are provided for directing a stream of vapor under pressure against the surface of each roller in a region following the point at which the yarns leave their respective grooves to clean the respective groove surfaces.
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |