US4071925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming textile lap
Assignee: United States Department of Agriculture
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Filing: 1976-05-25
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Granted: 1978-02-07
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Expires: 1996-05-25
Abstract
Abstract An apparatus for pressing textile fiber and tufts into lap through the use of converging belts around and between compression rollers thus improving the uniformity and surface texture of the lap is disclosed. The device comprises a series of driven rollers, belts and compression springs uniquely arranged to transform open fibers and tufts into a uniform, compressed and homogenous lap.
Inventors
- 👤 Craig L. Folk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:44
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/70; D04H1/72
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
Apparatus for pressing textile fibers and tufts into lap comprising: a. means to lodge textile fibers and tufts between two flexible belts; b. means to thereafter pass said belts between first and second fluted rollers, then partially around said second roller, then between said second roller and a third flutted roller, then partially around said third roller, and then between said third roller and a fourth fluted roller, c. a fifth roller, which is parallel to and adjacent said third roller at a location where said belts pass partially around said third roller, so that said belts pass between said third and fifth rollers, d. a means to oscillate said fifth roller across the upper periphery of said third roller, e. means to maintain compression between said second and first rollers, f. and to maintain compression between said second and third rollers, g. means to maintain compression between said third and fourth rollers.
Claim 2
Dependent Claim
153 words
Apparatus for pressing textile fibers and tufts into lap comprising: a. means to lodge textile fibers and tufts between two flexible belts; b. means to thereafter pass said belts between first and second fluted rollers, then partially around said second roller, then between said second roller and a third flutted roller, then partially around said third roller, and then between said third roller and a fourth fluted roller, c. a fifth roller, which is parallel to and adjacent said third roller at a location where said belts pass partially around said third roller, so that said belts pass between said third and fifth rollers, d. a means to oscillate said fifth roller across the upper periphery of said third roller, e. means to maintain compression between said second and first rollers, f. and to maintain compression between said second and third rollers, g. means to maintain compression between said third and fourth rollers.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 further including sixth and seventh rollers to adjust said flexible belts.
Claim 4
Dependent Claim
21 words
The apparatus of claim 2 further including an eighth roller to further adjust the tension of one of said flexible belts.
Claim 5
Dependent Claim
127 words
The apparatus of claim 2 wherein said means to lodge textile fibers and tufts between said belts is a chute comprising: (a) a rectangle configurated consturction as the top or entrance end thereof to a point of intersection with the sixth and seventh rollers, two opposing sides of said rectangular construction terminate at and are tangent to said sixth and seventh rollers and are in close proximity to the two belts which converge downward at an angle to a point of intersection, thus completing two opposing sides of said chute, (b) the other two opposing sides complete the upper rectangular section as well as extend down to the intersection point or vertex point of the flexible belts thus completing the other two opposing sides of the chute.
Claim 6
Dependent Claim
27 words
The apparatus of claim 4 wherein the chute sides are slotted and bolted to allow for inward and outward adjustment of the cross-sectional area of said chute.
Claim 7
Dependent Claim
28 words
The apparatus of claim 2 wherein the second, fourth, and fifth rollers are mounted in movable bearing blocks and held in compression by a spring and guide unit.
Claim 8
Dependent Claim
16 words
The apparatus of claim 1 wherein the fifth roller is driven by a bell crank drive.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |