Patent US3897022A successfully refreshed from Google Patents.
US3897022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eliminate tail-ends of yarn and to pick up the end of the end of the wound yarn
Assignee: Officine Savio SpA
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Filing: 1973-09-17
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Granted: 1975-07-29
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Expires: 1993-09-17
Abstract
Abstract Apparatus for eliminating the tail-end winding on the base of a bobbin to thereby release the starting end of yarn of spinning cops. The tail-end winding is preferably wound on the base of the bobbin exposed above the main yarn winding and the bobbin base is formed with a negatively tapered surface for mating with a positively tapered socket of a plurality of mandrel means positioned at successive stations in the path of conveyor means for transferring said bobbins successively at a predetermined rate to said respective mandrel means for providing orientation and handling of the bobbins and elimination of the tail-end of yarn from the bobbin base by suitable means at each mandrel location without damage to the main yarn winding and to permit pick up of the released thread end of the cop winding to suitable readying mechanism of a spinning machine or the like.
Inventors
- 👤 Luciano Savio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:02
CPC Classifications
B; B65; B65H; B65H67/00; B65H67/08; B65H67/086; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
178 words
An apparatus for eliminating the tail-end winding at the base of a bobbin to thereby release the starting end of yarn in spinning cops, comprising: a. a first operative station having means for supporting and rotating a bobbin and means adapted to cooperate with the rotating bobbin for loosening the tail-end winding at the base of the bobbin; b. a second operative station having means for supporting and rotating a bobbin and means adapted to cooperate with the rotating bobbin for separating the tail-end from the cop; c. a third operative station having means for supporting and rotating a bobbin and means adapted to cooperate with the rotating bobbin for forcefully removing the tail-end from the cop; d. means for picking up the thread end from either of the second and third operative stations and means for cutting from either of the second and third operative stations the tail-end removed; and e. conveyor means in operative relationship to the operative stations, and driven in steps for positioning a bobbin in sequence in the first, second and third station.
Claim 2
Independent Claim
178 words
An apparatus for eliminating the tail-end winding at the base of a bobbin to thereby release the starting end of yarn in spinning cops, comprising: a. a first operative station having means for supporting and rotating a bobbin and means adapted to cooperate with the rotating bobbin for loosening the tail-end winding at the base of the bobbin; b. a second operative station having means for supporting and rotating a bobbin and means adapted to cooperate with the rotating bobbin for separating the tail-end from the cop; c. a third operative station having means for supporting and rotating a bobbin and means adapted to cooperate with the rotating bobbin for forcefully removing the tail-end from the cop; d. means for picking up the thread end from either of the second and third operative stations and means for cutting from either of the second and third operative stations the tail-end removed; and e. conveyor means in operative relationship to the operative stations, and driven in steps for positioning a bobbin in sequence in the first, second and third station.
Claim 3
Dependent Claim
29 words
The apparatus of claim 1, wherein the means for supporting and rotating a bobbin in the first, second and third station respectively each comprise a mandrel and a countermandrel.
Claim 4
Dependent Claim
32 words
The apparatus of claim 1, wherein the means for loosening the tail-end comprises an elastic pad and a support connected to the pad for moving the pad against the cop at intervals.
Claim 5
Dependent Claim
20 words
The apparatus of claim 3, wherein the means for loosening the tail-end include a pneumatic piston acting on the support.
Claim 6
Dependent Claim
18 words
The apparatus of claim 3, wherein the means for loosening the tail-end include at least one further pad.
Claim 7
Dependent Claim
38 words
The apparatus of claim 2, wherein the means for picking up the thread at the third station includes suction means adapted to apply suction in the area of the base of the bobbin supported in the third station.
Claim 8
Dependent Claim
39 words
The apparatus of claim 6, wherein the means for picking up the thread at the second station also includes suction means adapted to apply suction in the area of the base of a bobbin supported in the second station.
Claim 9
Dependent Claim
25 words
The apparatus of claim 6, wherein the suction means comprises an axial hole through the mandrel and a vacuum source connected to the axial hole.
Claim 10
Dependent Claim
81 words
The apparatus of claim 5, wherein the means for separating the tail-end in the second operative station comprise stroking means performing a stroking action with a controlled, adjustable pressure on the wound yarn and on the base where the tail-end is wound, means for effecting the controlled, adjustable pressure, means for pulling away the stroking means, means for supporting, orientating and holding the stroking means, and means for carrying out periodical, axial displacement of the stroking means on the rotating cop.
Claim 11
Dependent Claim
75 words
The apparatus of claim 9, wherein the means which carry out a periodically stroking action comprise multiple opposed pads, the part, which carries out the stroking, being of an elastic material, the pads also being held by an arm which is hinged in the support and orientation means, the arm having a raised plane for application of controlled pressure and also having anchorage means for the means which displace the stroking means for the cop.
Claim 12
Dependent Claim
45 words
The apparatus of claim 10, wherein the means for carrying out controlled pressure comprise, for each pad, pneumatic means which press on the raised plane on the pad-carrying arm outside the fulcrum of application, the pneumatic means comprise a small piston activated by compressed air.
Claim 13
Dependent Claim
30 words
The apparatus of claim 9, wherein said means for axial movement include a lever, adapted to actuate the support, orientation and holding means, said lever being worked by a cam.
Claim 14
Dependent Claim
28 words
The apparatuS of claim 12, wherein the means for forcibly removing the tail-end on a cop rotating between two mandrels have scraper means capable of continual axial displacement.
Claim 15
Dependent Claim
54 words
The apparatus of claim 13, wherein the scraper means are held by elastic means, which are anchored to a support, to which a circular movement, is imparted, said support being connected to means creating a linkage, said means consisting of a sleeve, which moves perpendicularly at the hole within which the connecting shaft runs.
Claim 16
Dependent Claim
14 words
The apparatus of claim 14, wherein the scraper means include a spatula having projections.
Claim 17
Dependent Claim
44 words
The apparatus of claim 9, wherein the means for cutting the thread end comprises mechanical shears positioned downstream from the second and third stations, one blade being fixed whilst the other is capable of moving in front of the suction openings of the mandrels.
Claim 18
Dependent Claim
39 words
The apparatus of claim 9, further comprising lifting means cooperating with each operative station, and adapted to bring a bobbin from the conveyor means to a position where it can be engaged by the supporting means in the station.
Claim 19
Dependent Claim
59 words
The apparatus of claim 17, wherein the lifting means comprise two blades forming a V and placed axially to the stations, the blades being positioned at the sides of the conveyor and being simultaneously controlled, the vertical positioning of the blades being adjustable and the lifting and lowering control being carried out by a lever linked to a cam.
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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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |