US3834635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for braking filamentary material unwound from a package
Assignee: Sulzer AG
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Filing: 1973-04-19
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Granted: 1974-09-10
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Expires: 1993-04-19
Abstract
Abstract The braking device is constructed and positioned to act on the filamentary material from within the balloon formed by the material during an unwinding step, for example, for a pick in a weaving machine. The braking device can be used in cooperation with a balloon limiter or not. Braking occurs as soon as no further material is needed for a picking operation.
Inventors
- 👤 E Pfarrwaller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
B; B65; B65H; B65H57/00; B65H57/22; D; D03; D03D; D03D47/00; D03D47/34; D03D47/36; D03D47/361; D03D47/364; D03D47/365; D03D47/366; B65H2555/00; B65H2555/10; B65H2555/13; B65H2555/20; B65H2555/21; B65H2555/23; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
71 words
A method of braking an over-end winding of filamentary material comprising the steps of forming a supply of wound coils of the filamentary material on a storage device; unwinding the filamentary material over one end of the storage device while forming a balloon; and subsequently pneumatically applying a braking force on the filamentary material from the interior of the balloon in the region of the balloon to brake the filamentary material.
Claim 2
Independent Claim
71 words
A method of braking an over-end winding of filamentary material comprising the steps of forming a supply of wound coils of the filamentary material on a storage device; unwinding the filamentary material over one end of the storage device while forming a balloon; and subsequently pneumatically applying a braking force on the filamentary material from the interior of the balloon in the region of the balloon to brake the filamentary material.
Claim 3
Dependent Claim
28 words
A method as set forth in claim 1 wherein A turbulent air flow is directed in opposition to the direction of rotation of the balloon of filamentary material.
Claim 4
Dependent Claim
31 words
A method as set forth in claim 2 wherein the air flow is controlled in synchronism with the unwinding of the filamentary material to produce the air flow only during braking.
Claim 5
Dependent Claim
78 words
In combination with a storage device for receiving a plurality of coils of filamentary material thereon, an apparatus for braking the filamentary material unwound over-end from said storage device from the inside of a balloon formed by the material unwound from said storage device, said apparatus comprising an annular brake member disposed within said balloon and having flexible elements directed outwardly towards said balloon for directing a braking force from within said balloon outwardly relative to said balloon.
Claim 6
Dependent Claim
78 words
In combination with a storage device for receiving a plurality of coils of filamentary material thereon, an apparatus for braking the filamentary material unwound over-end from said storage device from the inside of a balloon formed by the material unwound from said storage device, said apparatus comprising an annular brake member disposed within said balloon and having flexible elements directed outwardly towards said balloon for directing a braking force from within said balloon outwardly relative to said balloon.
Claim 7
Dependent Claim
13 words
The combination as set forth in claim 4 wherein said elements are bristles.
Claim 8
Dependent Claim
28 words
The combination as set forth in claim 5 which further comprises an annular ring slidably mounted within said brake member to support said bristles at different selected regions.
Claim 9
Dependent Claim
41 words
The combination as set forth in claim 5 wherein said bristles are inclined outwardly of said brake member to permit the yarn to pass through said bristles and individual bunches of said bristles each form a curvature on the outside thereof.
Claim 10
Dependent Claim
25 words
The combination as set forth in claim 6 wherein said annular ring is slidable axially of said storage device and is lockable in selected positions.
Claim 11
Dependent Claim
37 words
The combination as set forth in claim 6 wherein said storage device is a substantially cylindrical drum and said brake member is an annular ring mounted concentrically about a periphery of said drum at one end thereof.
Claim 12
Dependent Claim
99 words
In combination with a storage device for receiving a plurality of coils of filamentary material thereon, an apparatus for braking the filamentary material unwound over-end from said storage device from the inside of a balloon formed by the material unwound from said storage device, said apparatus comprising a brake means disposed within said balloon for directing a braking force from within said balloon outwardly relative to said balloon, and an annular balloon limiting means disposed about said storage device and said brake means for limiting the size of said balloon, said brake means being directed against said limiting means.
Claim 13
Dependent Claim
99 words
In combination with a storage device for receiving a plurality of coils of filamentary material thereon, an apparatus for braking the filamentary material unwound over-end from said storage device from the inside of a balloon formed by the material unwound from said storage device, said apparatus comprising a brake means disposed within said balloon for directing a braking force from within said balloon outwardly relative to said balloon, and an annular balloon limiting means disposed about said storage device and said brake means for limiting the size of said balloon, said brake means being directed against said limiting means.
Claim 14
Dependent Claim
26 words
The combination as set forth in claim 10 wherein said brake means is an annular brake member having flexible elements in contact with said limiting means.
Claim 15
Dependent Claim
21 words
The combination as set forth in claim 11 wherein said brake member is mounted on one end of said storage device.
Claim 16
Dependent Claim
39 words
The combination as set forth in claim 10 wherein at least one of said limiter means and said brake means is slidably mounted on said storage device to vary a spacing between said brake means and said limiter means.
Claim 17
Dependent Claim
17 words
The combination as set forth in claim 10 wherein said brake means is an air inflated tube.
Claim 18
Dependent Claim
109 words
In combination with a storage device for receiving a plurality of coils of filamentary material thereon, an apparatus for braking the filamentary material unwound over-end from said storage device from the inside of a balloon formed by the material unwound from said storage device, said apparatus comprising a brake means disposed within said balloon for directing a braking force from within said balloon outwardly relative to said balloon, and an annular balloon limiting means about said storage device and wherein said brake means includes a ring having a plurality of exit nozzles directed towards said limiting means for directing jets of a flowing medium angularly towards said limiting means.
Claim 19
Dependent Claim
109 words
In combination with a storage device for receiving a plurality of coils of filamentary material thereon, an apparatus for braking the filamentary material unwound over-end from said storage device from the inside of a balloon formed by the material unwound from said storage device, said apparatus comprising a brake means disposed within said balloon for directing a braking force from within said balloon outwardly relative to said balloon, and an annular balloon limiting means about said storage device and wherein said brake means includes a ring having a plurality of exit nozzles directed towards said limiting means for directing jets of a flowing medium angularly towards said limiting means.
Claim 20
Dependent Claim
31 words
The combination as set forth in claim 15 wherein said brake means includes an annular ring mounted in said storage device, said ring having a conical part including said nozzles therein.
Claim 21
Independent Claim
88 words
A method of braking an over-end winding of yarn delivered to a picking mechanism of a weaving machine, said method comprising the steps of forming a supply of wound coils of the yarn on a storage device; unwinding the yarn over one end of the storage device while forming a balloon; and applying a relatively slight braking force on the yarn from the interior of the balloon and in the region of the balloon at the completion of a picking operation of the yarn in the weaving machine.
Claim 22
Independent Claim
88 words
A method of braking an over-end winding of yarn delivered to a picking mechanism of a weaving machine, said method comprising the steps of forming a supply of wound coils of the yarn on a storage device; unwinding the yarn over one end of the storage device while forming a balloon; and applying a relatively slight braking force on the yarn from the interior of the balloon and in the region of the balloon at the completion of a picking operation of the yarn in the weaving machine.
Claim 23
Dependent Claim
18 words
A method as set forth in claim 17 wherein the yarn is unwound intermittently from the storage device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |