Patent US3667205A successfully refreshed from Google Patents.
US3667205A
Expired / Lapsed
US
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Mechanism for withdrawing and winding yarn in spinning units
Assignee: Elitex Zavody Textilniho
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Filing: 1970-03-09
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Granted: 1972-06-06
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Expires: 1990-03-09
Abstract
Abstract An open end spinning machine including a yarn winding apparatus having a driven rotatable drum, a bobbin mounting frame movable toward and away from the drum so that the bobbin may be selectively driven and undriven. In accordance with the invention there is provided means, shown as hand operated, for raising the bobbin from the drum, and means for adjustably retaining the frame and bobbin in elevated position, preferably with the surface of the bobbin spaced only a small distance above the peripheral surface of the drum. Means, here shown as foot operated, is provided for releasing the frame, when desired, whereby it is lowered so that the bobbin again rest upon and is driven by the drum.
Inventors
- 👤 Ladislav Brazda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:01
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/52; B65H54/54; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
In an open end spinning machine including a yarn winding apparatus having a driven rotatable drum, a frame movable toward and away from the drum, means on the frame rotatably mounting a bobbin being wound by surface engagement with the drum as the bobbin is thrust toward the drum, the improvement which comprises means for selectively moving the bobbin continuously and steplessly into a selected position away from the drum to stop the winding operation, means for retaining the frame with the peripheral surface of the bobbin in said selected position spaced from the drum, and means for releasing the last named means so that the frame approaches the drum and carries the bobbin into driving engagement with the drum.
Claim 2
Dependent Claim
120 words
In an open end spinning machine including a yarn winding apparatus having a driven rotatable drum, a frame movable toward and away from the drum, means on the frame rotatably mounting a bobbin being wound by surface engagement with the drum as the bobbin is thrust toward the drum, the improvement which comprises means for selectively moving the bobbin continuously and steplessly into a selected position away from the drum to stop the winding operation, means for retaining the frame with the peripheral surface of the bobbin in said selected position spaced from the drum, and means for releasing the last named means so that the frame approaches the drum and carries the bobbin into driving engagement with the drum.
Claim 3
Dependent Claim
58 words
Apparatus according to claim 1, wherein the means for selectively moving the bobbin away from the drum is positioned to be operated by the hand of an operator in a normal position, and the means for releasing the frame retaining means is adapted to be operated by the foot of the operator in substantially the same normal position.
Claim 4
Dependent Claim
40 words
Apparatus according to claim 1, wherein at least a part of the frame and the bobbin mounted thereon are disposed above the drum, and the bobbin is held in its lowered position in driving engagement with the drum by gravity.
Claim 5
Dependent Claim
26 words
Apparatus according to claim 3, wherein the frame is pivotally mounted on a shaft disposed parallel to and substantially spaced from the axis of the drum.
Claim 6
Dependent Claim
52 words
Apparatus according to claim 4, wherein the means for retaining the frame with the peripheral surface of the bobbin elevated above the peripheral surface of the drum is so constructed and arranged that the axis of the bobbin may selectively be positioned at continuously varying distances from the axis of the drum.
Claim 7
Dependent Claim
46 words
Apparatus according to claim 5, wherein said means for retaining the frame and bobbin elevated comprises a first, fixed member having a first surface and a second member movable with the frame and having a second surface selectively clampingly engaging the first surface in adjusted position.
Claim 8
Dependent Claim
18 words
Apparatus according to claim 6, wherein the first and second surfaces engage each other in infinitely adjusted positions.
Claim 9
Dependent Claim
58 words
Apparatus according to claim 5, wherein the means for retaining the frame with the peripheral surface of the bobbin elevated above the peripheral surface of the drum comprises a fluid check device having a cylinder and a piston therein one of which is fixedly positioned and the other of which is connected to the frame mounting the bobbin.
Claim 10
Dependent Claim
46 words
Apparatus according to claim 8, wherein the fluid check device operates with liquid, and comprising a selectively operated valve to release liquid from between the piston and cylinder, and a sump from which liquid passes into the cylinder and into which it flows from the cylinder.
Claim 11
Dependent Claim
28 words
Apparatus according to claim 3, comprising means for selectively retarding the descent of the frame and bobbin into their lowered position wherein the bobbin drivingly engages the drum.
Claim 12
Dependent Claim
52 words
Apparatus according to claim 2, wherein the means for selectively moving the bobbin away from the drum and the means for releasing the frame retaining means are disposed generally in the same vertical plane, and one of said bobbin moving means and frame retaining releasing means is disposed substantially above the other.
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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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |