Patent US3737951A successfully refreshed from Google Patents.
US3737951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card clothing
Assignee: James Mackie and Sons Ltd
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Filing: 1970-10-19
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Granted: 1973-06-12
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Expires: 1990-10-19
Abstract
Abstract Clothing for the cylinder of a card particularly for use with wool and synthetic fibres comprises a stave having pins mounted in it at a density greater than ten pins per square centimetre with each pin projecting from the stave by a length of less than 2 1/2 mm. The length of taper of each pin is greater than the projecting length so that part of the taper is located within the body of the stave thus leading to improved carding of fine denier material.
Inventors
- 👤 A Mackie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:37
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/84
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
Clothing for the cylinder of a card comprising: a stave having a plurality of holes therethrough, at least a portion of said holes being cylindrical in cross-section, said portion including an outer portion adjacent the outer surface of the stave, a plurality of pins mounted one in each of said stave holes, said pins having a cylindrical body with a generally conically tapered end, said cylindrical body being located essentially in the cylindrical part of its respective stave hole, and at least a portion of the tapered end also being located in its respective stave hole, said tapered portion of the pin in its stave hole and the said outer portion of the stave hole defining therebetween a recess surrounding said tapered pin, the said tapered end projectiNg outward from the surface of the stave a distance less than 2 1/2 mm.
Claim 2
Dependent Claim
142 words
Clothing for the cylinder of a card comprising: a stave having a plurality of holes therethrough, at least a portion of said holes being cylindrical in cross-section, said portion including an outer portion adjacent the outer surface of the stave, a plurality of pins mounted one in each of said stave holes, said pins having a cylindrical body with a generally conically tapered end, said cylindrical body being located essentially in the cylindrical part of its respective stave hole, and at least a portion of the tapered end also being located in its respective stave hole, said tapered portion of the pin in its stave hole and the said outer portion of the stave hole defining therebetween a recess surrounding said tapered pin, the said tapered end projectiNg outward from the surface of the stave a distance less than 2 1/2 mm.
Claim 3
Dependent Claim
27 words
A stave according to claim 1, in which the length of taper of each pin is at least 50 percent greater than the total projecting length thereof.
Claim 4
Dependent Claim
28 words
A stave according to claim 2, in which said pins project from said stave by approximately 2 mm. and have a total tapered length of approximately 4 mm.
Claim 5
Dependent Claim
26 words
A stave according to claim 1, in which each said hole in said stave extends with said cylindrical cross-section for the full thickness of the stave.
Claim 6
Dependent Claim
115 words
Clothing for the cylinder of a card comprising: a stave having a plurality of holes therethrough, said holes being parallel sided throughout the thickness of the stave, a plurality of pins mounted one in each of said stave holes, said pins having a parallel sided body conforming to the shape of said parallel sided holes and a tapered end, the base of said tapered end located within its respective stave hole and the tip thereof projecting out of said stave hole a distance less than 2 1/2 mm., said stave hole and the portion of the tapered end therein thus defining a small recess around the portion of the tapered end within the stave hole.
Claim 7
Dependent Claim
115 words
Clothing for the cylinder of a card comprising: a stave having a plurality of holes therethrough, said holes being parallel sided throughout the thickness of the stave, a plurality of pins mounted one in each of said stave holes, said pins having a parallel sided body conforming to the shape of said parallel sided holes and a tapered end, the base of said tapered end located within its respective stave hole and the tip thereof projecting out of said stave hole a distance less than 2 1/2 mm., said stave hole and the portion of the tapered end therein thus defining a small recess around the portion of the tapered end within the stave hole.
Claim 8
Dependent Claim
30 words
A stave according to claim 5, the total length of the tapered end being at least 50 percent greater than the part thereof which projects out of the stave hole.
Claim 9
Dependent Claim
148 words
A cylinder for a card fitted with clothing comprising a plurality of staves, each stave having a plurality of cylindrical holes therethrough, a plurality of pins mounted in said stave holes at a density greater than 10 pins per square cm, each said pin having a cylindrical body within its respective stave hole and a tapered length projecting from the outer surface of said stave for a distance of less than 2 1/2 mm. and the total of said length of taper being at least 50 percent greater than the part thereof projecting beyond the surface of the stave, said tapered length of the pin in its stave hole and the said outer portion of the stave hole defining therebetween a recess surrounding said tapered pin and wherein the tips of said pins have been flattened by grinding so as to lie accurately on a common cylindrical surface.
Claim 10
Dependent Claim
148 words
A cylinder for a card fitted with clothing comprising a plurality of staves, each stave having a plurality of cylindrical holes therethrough, a plurality of pins mounted in said stave holes at a density greater than 10 pins per square cm, each said pin having a cylindrical body within its respective stave hole and a tapered length projecting from the outer surface of said stave for a distance of less than 2 1/2 mm. and the total of said length of taper being at least 50 percent greater than the part thereof projecting beyond the surface of the stave, said tapered length of the pin in its stave hole and the said outer portion of the stave hole defining therebetween a recess surrounding said tapered pin and wherein the tips of said pins have been flattened by grinding so as to lie accurately on a common cylindrical surface.
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |