US3797218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for spinning sliver
Assignee: Rieter Ingolstadt GmbH
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Filing: 1970-03-09
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Granted: 1974-03-19
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Expires: 1990-03-09
Abstract
Abstract On its way to a spinning chamber a sliver is opened out to divide it up into individual fibers and is then caused to pass along a path with two parts placed at an angle to each other. Owing to the sudden change in direction as the fibers pass from one part to the other dirt particles, which are denser than the fibers, are thrown out by centrifugal force and leave the fibers through a separating opening.
Inventors
- 👤 H Landwehrkamp
- 👤 F Schreyer
- 👤 A Schiltknecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:17
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/08; D01H4/30; D01H4/36
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
88 words
A method for spinning a sliver in a spinning chamber, comprising opening the sliver and feeding it in the form of individual fibers to the spinning chamber, the fibers of the sliver passing to the spinning chamber along a path having two parts which are set at an angle to each other so as to produce a change in direction of the movement of the fibers and to throw out dirt particles through a dirt-discharge opening adjacent to the adjacent ends of the two parts of the path.
Claim 2
Independent Claim
88 words
A method for spinning a sliver in a spinning chamber, comprising opening the sliver and feeding it in the form of individual fibers to the spinning chamber, the fibers of the sliver passing to the spinning chamber along a path having two parts which are set at an angle to each other so as to produce a change in direction of the movement of the fibers and to throw out dirt particles through a dirt-discharge opening adjacent to the adjacent ends of the two parts of the path.
Claim 3
Dependent Claim
34 words
A method in accordance with claim 1, in which an air current is introduced into the fibers in a direction opposite to the direction of movement of the dirt particles out of the fibers.
Claim 4
Dependent Claim
59 words
A method in accordance with claim 1, in which a transport roller with fiber engaging projections and which serves for separating the sliver into individual fibers continues to rotate after spinning in the spinning chamber is discontinued, and as the spinning chamber slows down fibers are removed through the dirt-discharge opening instead of being fed to the spinning chamber.
Claim 5
Independent Claim
110 words
An apparatus for processing textile fibers comprising means for conveying textile fiber material and opening up the fibers thereof, a spinning chamber arranged to receive the opened up fibers from said means, said means being arranged to pass the fibers along a path with two portions at an angle to each other for causing the fibers to undergo a change in direction on passing through one part of the path to the next part, a dirt-discharge opening being provided at adjacent ends of the two parts of the path for discharge of dirt from the fibers, and means defining a separating edge which defines one side of the dirt-discharge opening.
Claim 6
Independent Claim
110 words
An apparatus for processing textile fibers comprising means for conveying textile fiber material and opening up the fibers thereof, a spinning chamber arranged to receive the opened up fibers from said means, said means being arranged to pass the fibers along a path with two portions at an angle to each other for causing the fibers to undergo a change in direction on passing through one part of the path to the next part, a dirt-discharge opening being provided at adjacent ends of the two parts of the path for discharge of dirt from the fibers, and means defining a separating edge which defines one side of the dirt-discharge opening.
Claim 7
Dependent Claim
74 words
An apparatus in accordance with claim 4, in which the conveying said opening means induces a high speed rotary roller provided with fiber-engaging projections on its surfaces, a casing surrounding the roller, the two parts of the path being defined by the casing surrounding the roller and by the roller, and the separating edge being placed on the downstream side of the dirt-discharge opening in terms of the direction of rotation of the roller.
Claim 8
Dependent Claim
47 words
An apparatus in accordance with claim 5, in which a radius of the roller drawn so as to touch the separating edge, makes an angle of at least 30* with a radially outer face of the means defining the separating edge, and adjacent to the separating edge.
Claim 9
Dependent Claim
20 words
An apparatus in accordance with claim 5, comprising means for adjusting the distance of the separating edge from the roller.
Claim 10
Dependent Claim
60 words
An apparatus in accordance with claim 4, the conveying and opening means including a drafting device for opening up the sliver into individual fibers, and duct means defining the two parts of the path which leads from the drafting device to including spinning chamber, the upstream and downstream path portions having the separating edge arranged adjacent to their adjacenT ends.
Claim 11
Dependent Claim
25 words
An apparatus in accordance with claim 8, in which the dirt-discharge opening is arranged in an extension of the upstream part of the supply duct.
Claim 12
Dependent Claim
22 words
An apparatus in accordance with claim 9, comprising a connecting duct arranged so as to form a continuation of the upstream path.
Claim 13
Dependent Claim
19 words
An apparatus in accordance with claim 4, and means defining an air supply duct adjacent to the dirt-discharge opening.
Claim 14
Dependent Claim
22 words
An apparatus in accordance with claim 11, comprising an additional air supply duct opening into the path upstream from the dirt-discharge opening.
Claim 15
Independent Claim
51 words
An apparatus in accordance with calim 4, in which the two path portions include an upstream portion and a downstream portion, and a supplemental air supply duct formed by an extension of the downstream path portion in the direction opposite to the direction of fiber flow through said downstream path portion.
Claim 16
Independent Claim
51 words
An apparatus in accordance with calim 4, in which the two path portions include an upstream portion and a downstream portion, and a supplemental air supply duct formed by an extension of the downstream path portion in the direction opposite to the direction of fiber flow through said downstream path portion.
Claim 17
Dependent Claim
18 words
An apparatus in accordance with claim 13, in which the air supply duct is connected with the atmosphere.
Claim 18
Dependent Claim
29 words
An apparatus in accordance with claim 4, an air supply duct for supplying air to the fiber path, and means for closing the air supply duct to varying degrees.
Claim 19
Dependent Claim
16 words
An apparatus in accordance with claim 4, comprising a closing part for blocking the dirt-discharge opening.
Claim 20
Dependent Claim
38 words
An apparatus in accordance with claim 15, in which the closing part can be brought into at least one intermediate position between positions in which it blocks the dirt-discharge opening and in which it uncovers the dirt-discharge opening.
Claim 21
Dependent Claim
42 words
An apparatus in accordance with claim 16, in which the conveying means is a roller and the closing part is adjacent to it, the portion of the closing part nearest the roller conforming to the shape of a housing surrounding the roller.
Claim 22
Dependent Claim
39 words
An apparatus in accordance with claim 18, comprising a pivoted two-armed lever, the closing part being carried by one arm of said lever, and a control cam for engaging the other arm of said lever for turning said lever.
Claim 23
Dependent Claim
28 words
An assembly comprising several spinning apparatuses in accordance with claim 4, and means for adjusting conjointly the size of the individual dirt-discharge openings of the several spinning apparatuses.
Claim 24
Independent Claim
58 words
An apparatus for processing textile fibers comprising means for conveying textile fiber material and opening up the fibers thereof, and a spinning chamber arranged to receive the opened fibers from said means, said means defining a path along which the textile fiber material passes, said path having an opening therein through which impurities from said material are discharged.
Claim 25
Independent Claim
58 words
An apparatus for processing textile fibers comprising means for conveying textile fiber material and opening up the fibers thereof, and a spinning chamber arranged to receive the opened fibers from said means, said means defining a path along which the textile fiber material passes, said path having an opening therein through which impurities from said material are discharged.
Claim 26
Dependent Claim
36 words
A method in accordance with claim 1, including closing the dirt-discharge opening, removing pneumatically dirt particles separated from the sliver and again opening the dirt-discharge opening after the removal of the dirt particles has been completed.
Claim 27
Independent Claim
95 words
An apparatus for processing textile fibers comprising fiber opening roller means for opening up the individual fibers, conveying means for conveying fibers along an arcuate path adjacent to the periphery of said fiber opening roller means, a spinning chamber arranged to receive the opened up fibers from the discharge end of said conveying means path, and a dirt-discharge opening in said conveying means adjacent to said fiber opening roller at a location in advance of the discharge end of said conveying means path for discharge of dirt separated from the fibers moving along said path.
Claim 28
Independent Claim
95 words
An apparatus for processing textile fibers comprising fiber opening roller means for opening up the individual fibers, conveying means for conveying fibers along an arcuate path adjacent to the periphery of said fiber opening roller means, a spinning chamber arranged to receive the opened up fibers from the discharge end of said conveying means path, and a dirt-discharge opening in said conveying means adjacent to said fiber opening roller at a location in advance of the discharge end of said conveying means path for discharge of dirt separated from the fibers moving along said path.
Claim 29
Independent Claim
69 words
A method for removing impurities and similar material from staple fibers for ringless spinning in spinning units including a fiber opening roller and a rotary underpressure spinning chamber, characterized in that the impurities are ejected from the fibers through a discharge opening after having been contacted by the fiber opening roller by the effect of the acceleration imparted to the impurities by their contact with the fiber opening roller.
Claim 30
Independent Claim
69 words
A method for removing impurities and similar material from staple fibers for ringless spinning in spinning units including a fiber opening roller and a rotary underpressure spinning chamber, characterized in that the impurities are ejected from the fibers through a discharge opening after having been contacted by the fiber opening roller by the effect of the acceleration imparted to the impurities by their contact with the fiber opening roller.
Claim 31
Independent Claim
103 words
An apparatus for removing impurities from staple fibers for ringless spinning in spinning units, comprising a holloW body, a fiber opening roller rotatable in said hollow body, sai hollow body having a supply passage through which unopened fibers are supplied to said opening roller, and a spinning chamber, said hollow body having an opened fiber discharge passage through which opened fibers pass from said opening roller to said spinning chamber, and said hollow body having an impurities discharge passage between said fiber supply passage and said opened fiber discharge passage for discharge therethrough of impurities from fiber being opened by said opening roller.
Claim 32
Independent Claim
103 words
An apparatus for removing impurities from staple fibers for ringless spinning in spinning units, comprising a holloW body, a fiber opening roller rotatable in said hollow body, sai hollow body having a supply passage through which unopened fibers are supplied to said opening roller, and a spinning chamber, said hollow body having an opened fiber discharge passage through which opened fibers pass from said opening roller to said spinning chamber, and said hollow body having an impurities discharge passage between said fiber supply passage and said opened fiber discharge passage for discharge therethrough of impurities from fiber being opened by said opening roller.
Claim 33
Dependent Claim
27 words
The apparatus defined in claim 25, in which the impurities discharge passage extends through the hollow body generally tangentially to the periphery of the fiber opening roller.
Claim 34
Dependent Claim
50 words
The apparatus defined in claim 26, in which the hollow body includes a wall extending substantially tangentially to the periphery of the fiber opening roller, located so that the adjacent portion of the fiber opening roller periphery moves toward said wall and constituting a wall of the impurities discharge passage.
Claim 35
Dependent Claim
45 words
The apparatus defined in claim 25, in which the width of the impurities discharge opening in a direction parallel to the axis of rotation of the fiber opening roller is at least equal to the axial width of the periphery of the fiber opening roller.
Claim 36
Dependent Claim
29 words
The apparatus defined in claim 25, including an impurities collecting chamber for receiving impurities from the impurities discharge passage, from which collecting chamber the impurities are removed by suction.
Claim 37
Independent Claim
118 words
An apparatus for processing textile fibers comprising fiber opening roller means for opening up the individual fibers, conveying means for conveying fibers along an arcuate path adjacent to the periphery of said fiber opening roller means, a spinning chamber arranged to receive the opened up fibers from the discharge end of said conveying means path, an impurities discharge passage in said conveying means adjacent to said fiber opening roller at a location in advance of the discharge end of said conveying means path for discharge of dirt separated from the fibers moving along said path, and an impurities collecting chamber for receiving impurities from said impurities discharge passage, from which collecting chamber the impurities are removed by suction.
Claim 38
Independent Claim
118 words
An apparatus for processing textile fibers comprising fiber opening roller means for opening up the individual fibers, conveying means for conveying fibers along an arcuate path adjacent to the periphery of said fiber opening roller means, a spinning chamber arranged to receive the opened up fibers from the discharge end of said conveying means path, an impurities discharge passage in said conveying means adjacent to said fiber opening roller at a location in advance of the discharge end of said conveying means path for discharge of dirt separated from the fibers moving along said path, and an impurities collecting chamber for receiving impurities from said impurities discharge passage, from which collecting chamber the impurities are removed by suction.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |