Patent US3756007A successfully refreshed from Google Patents.
US3756007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning device for producing a filament from a fiber strip
Assignee: SKF GmbH
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Filing: 1971-06-15
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Granted: 1973-09-04
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Expires: 1991-06-15
Abstract
Abstract This invention relates to a spinning device for spinning a filament yarn from a fiber strip. In general such spinning devices comprise a spinning rotor defining a spinning chamber. A fiber singling-out device or needle roller, combined with a fiber strip delivery system, comprising a high speed roller is provided for opening up a fed fiber strip into its individual fibers. The separated individual fibers are fed by an air current, over a fiber feed channel, to the spinning chamber, and the spun filament or yarn is drawn off through a yarn delivery channel. In one known construction the fiber singling-out device is disposed in the housing holding the rotor behind the rotor and coaxial to same. In a second known construction the fiber singling-out device is mounted on an independent bearing member, in front of the spinning rotor and with its axis vertical thereto. ) ''''Vereinzelungswalze'''' literally translated means individualizing roller, i.e., a roller for separating a fiber strip into its component fibers. For sake of clarity it will hereinafter be referred to as ''''fiber singling-out device.''''
Inventors
- 👤 G Bartling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:01
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
135 words
Apparatus for spinning yarn from a fiber strip, comprising a housing, a spring rotor mounted at the end of a shaft journalled in said housing to rotate about an axis, said rotor defining a spinning chamber, means for separating fiber strips into individual fibers and duct means extending between said separating means and said spinning chamber for delivering said fibers to said spinning chamber in an air stream, said separating means comprising a needle roller mounted at the end of a shaft journal in said housing to rotate about an axis offset from said rotor axis and axially situated at least in part in front of said spinning chamber, the line between said needle roller and said spinning rotor being at an angle less than 40* with respect to the axis of said spinning rotor.
Claim 2
Dependent Claim
135 words
Apparatus for spinning yarn from a fiber strip, comprising a housing, a spring rotor mounted at the end of a shaft journalled in said housing to rotate about an axis, said rotor defining a spinning chamber, means for separating fiber strips into individual fibers and duct means extending between said separating means and said spinning chamber for delivering said fibers to said spinning chamber in an air stream, said separating means comprising a needle roller mounted at the end of a shaft journal in said housing to rotate about an axis offset from said rotor axis and axially situated at least in part in front of said spinning chamber, the line between said needle roller and said spinning rotor being at an angle less than 40* with respect to the axis of said spinning rotor.
Claim 3
Dependent Claim
14 words
The apparatus according to claim 1, wherein the angle lies between 25* and 35*.
Claim 4
Dependent Claim
32 words
The apparatus according to claim 1 wherein the axes of said spinning rotor and said needle roller lie in a common vertical plane and said rotor is disposed above said needle roller.
Claim 5
Dependent Claim
22 words
The apparatus according to claim 1 wherein the axes of said spinning rotor and said needle roller are parallel to each other.
Claim 6
Dependent Claim
29 words
The apparatus according to claim 4 wherein the spinning rotor and the needle roller are driven in common by an endless friction belt tangential adapted to engage each shaft.
Claim 7
Dependent Claim
36 words
The apparatus according to claim 1 including a cover pivotally mounted on said housing defining therewith a space for said spinning rotor and for said needle roller, said duct extending therebetween being formed in said cover.
Claim 8
Dependent Claim
33 words
The apparatus according to claim 6 wherein the cover is formed with a separable portion in which said duct is formed, whereby differently sized ducts may be exchanged by replacing said separable portion.
Claim 9
Dependent Claim
19 words
The apparatus according to claim 7 wherein a tube for withdrawing spun yarn is provided in said separable portion.
Claim 10
Dependent Claim
49 words
The apparatus according to claim 1 including a fiber strip feed assembly comprising a fiber strip feed roller coacting with a presser shoe mounted in said housing axially parallel to the needle roller and disposed in a plane common to the axes of the spinning rotor and needle roller.
Claim 11
Dependent Claim
48 words
The apparatus according to claim 5 wherein said housing is pivotally mounted on a frame, and the apparatus includes brake means spaced from each of said rotatably journalled shafts, said housing being movable to cause said shafts to disengage from said tangential belt and engage said brake means.
Claim 12
Dependent Claim
35 words
The apparatus according to claim 5 wherein the shaft of said needle roller is provided with an enlarged pulley engaging said belt whereby said roller is rotated at a speed greater than said spinning rotor.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |