US3636591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drafting device for textile machines
Assignee: N Schlumberger SAS
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Filing: 1969-11-05
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Granted: 1972-01-25
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Expires: 1989-11-05
Abstract
Abstract The present invention relates to a drafting machine for the preparation and spinning of natural or manmade textile fibers and more particularly to the devices for controlling said fibers. A device according to the invention comprises, between feed cylinders and drafting cylinders, two fields of control elements movable in the sense of forward movement of the fibrous material to be drafted between the two fields. A least one of said fields is constituted by bars with flexible lips each formed from a transverse strip of material presenting a degree of flexibility such as rubber, leather or an elastomer folded back on itself in the form of a loop called upon to exert a degree of pressure against the said fibrous material.
Inventors
- 👤 Jean Frederic Herubel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:56
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/26; D01H5/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
A device for drafting a fibrous material comprising feed cylinders, drafting cylinders, two fields of fiber controlling elements arranged between said feed and drafting cylinders and movable in the direction of movement of said fibrous material, at least one of said fields of fiber controlling elements being constituted by bars and flexible lips carried by said bars, said lips each being formed of a transverse thin strip of material presenting a degree of flexibility folded back on itself to form a loop called on to exert a pressure against the fibrous material.
Claim 2
Independent Claim
92 words
A device for drafting a fibrous material comprising feed cylinders, drafting cylinders, two fields of fiber controlling elements arranged between said feed and drafting cylinders and movable in the direction of movement of said fibrous material, at least one of said fields of fiber controlling elements being constituted by bars and flexible lips carried by said bars, said lips each being formed of a transverse thin strip of material presenting a degree of flexibility folded back on itself to form a loop called on to exert a pressure against the fibrous material.
Claim 3
Dependent Claim
42 words
A device according to claim 1, further comprising two terminal cylinders, a table between said two terminal cylinders, and wherein said other field of fiber control elements is constituted by an endless belt passing over said table and said two terminal cylinders.
Claim 4
Dependent Claim
23 words
A device according to claim 1, wherein the other field of fiber control elements is also constituted by bars with similar flexible lips.
Claim 5
Dependent Claim
20 words
A device according to claim 1, wherein each of said flexible lip carrying bars is made of a rigid material.
Claim 6
Dependent Claim
39 words
A device according to claim 4, wherein each of said bars has a strip-carrying face, said flexible strip having two marginal portions and said two marginal portions of said flexible strip being secured to said face of said bar.
Claim 7
Dependent Claim
43 words
A device according to claim 4, wherein each of said bars has two opposite strip-carrying faces, said flexible strip having two marginal portions and said two marginal portions of said flexible strip being secured respectively to said two opposite faces of said bar.
Claim 8
Dependent Claim
24 words
A device according to claim 3, wherein each bar of one of said two fields is located opposite a bar of the other field.
Claim 9
Dependent Claim
31 words
A device according to claim 3, wherein each bar of one of said two fields is shifted with reference to a bar of the other field in their direction of motion.
Claim 10
Dependent Claim
48 words
A device according to claim 1, wherein one of said two fields of fiber control elements comprises an endless belt, said flexible lip-carrying bars being arranged inside said endless belt, said lips being in contact with one run of said belt in an active area of said field.
Claim 11
Dependent Claim
42 words
A device according to claim 9, wherein said flexible lip-carrying bars are carried on a support, said support being movable perpendicularly to the general plane of said lips on a zone where they cooperate with the other field of fiber controlling elements.
Claim 12
Dependent Claim
39 words
A device according to claim 1, wherein said field of fiber-controlling element further comprises two end cylinders, an endless belt passing over said two end cylinders, said field of flexible lip carrying bars being carried by said endless belt.
Claim 13
Dependent Claim
30 words
A device according to claim 2, wherein said table is raised with reference to the end cylinder which carries the downstream end of the endless belt passing over said table.
Claim 14
Dependent Claim
56 words
A device according to claim 1, wherein a support means is provided on which said field of flexible lip carrying bars is mounted for displacing said lip-carrying bars in a working path in the direction of movement of the fiber material and for returning said flexible lip-carrying bars through a path located above the working path.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |