US3593511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twisting head for textile machine
Assignee: Electrospin Corp
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Filing: 1970-01-21
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Granted: 1971-07-20
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Expires: 1990-01-21
Abstract
Abstract A supporting and driving head for a radially clamping grip having a venturi-type member in axial alignment for use in threading a yarn into the grip through its outlet end.
Inventors
- 👤 Claude Guignard
- 👤 Jean Pellaton
- 👤 Maurice Poull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:27
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/11; D01H4/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
In an open end spinning machine, a twisting head for twisting a normally continuously moving yarn comprising: a. a radially expansible and contractable yarn grip having a central through aperture having an inlet and an outlet and adapted to radially clamp the periphery of a yarn therein while allowing axial sliding motion of the yarn therethrough, the trailing end of such yarn being normally disposed anterior to said grip inlet, and b. a normally inoperative yarn insertion device having a through passage in axial alignment with said yarn grip adjacent said yarn grip outlet and through which the yarn normally passes from said yarn grip, said insertion device being operable to retrieve the trailing end of a length of yarn which has passed through said grip and said insertion device incident to the interruption of proper yarn spinning and to restore said yarn to a position in which it extends through said grip and said insertion device and its trailing end is again anterior to said grip inlet end.
Claim 2
Dependent Claim
169 words
In an open end spinning machine, a twisting head for twisting a normally continuously moving yarn comprising: a. a radially expansible and contractable yarn grip having a central through aperture having an inlet and an outlet and adapted to radially clamp the periphery of a yarn therein while allowing axial sliding motion of the yarn therethrough, the trailing end of such yarn being normally disposed anterior to said grip inlet, and b. a normally inoperative yarn insertion device having a through passage in axial alignment with said yarn grip adjacent said yarn grip outlet and through which the yarn normally passes from said yarn grip, said insertion device being operable to retrieve the trailing end of a length of yarn which has passed through said grip and said insertion device incident to the interruption of proper yarn spinning and to restore said yarn to a position in which it extends through said grip and said insertion device and its trailing end is again anterior to said grip inlet end.
Claim 3
Dependent Claim
59 words
The twisting device defined in claim 1 further comprising means for expanding the through aperture of said yarn grip prior to the retrieval and restoration action of said yarn insertion device and for permitting contraction of said yarn grip once the trailing end of the yarn length has been restored to its position anterior to said grip inlet end.
Claim 4
Dependent Claim
52 words
The twisting device defined in claim 1 wherein said yarn grip has a side entry slot through which yarn may be moved radially inwardly into said grip central aperture and through the radially outer portion of which slot yarn can be moved axially by said yarn insertion device during its restoration action.
Claim 5
Dependent Claim
14 words
The twisting device defined in claim 2 wherein said insertion device is pneumatically operable.
Claim 6
Dependent Claim
14 words
The twisting device defined in claim 3 wherein said insertion device is pneumatically operable.
Claim 7
Dependent Claim
62 words
The twisting device defined in claim 4, further comprising a rotary grip holder having a chamber for containing said yarn grip and including a tubular terminal section positioned so as to surround at least that portion of said insertion device adjacent said yarn grip outlet, said grip holder being adapted to rotate coaxially witH said yarn grip and to drive the latter.
Claim 8
Dependent Claim
116 words
The twisting device defined in claim 6 further comprising: a. A pistonlike mobile member slidably retained in said chamber having said yarn grip centrally mounted thereon, b. said yarn grip including a plurality of flexible filaments secured equiangularly to form said through aperture, said filaments being arched as a bow net at said inlet end, c. said expanding means including a hollow cylindrical member fixed axially of said yarn grip adjacent said bow net, d. said mobile member being axially slidable toward said cylindrical member by the force of air ejected by said pneumatic insertion device, e. said cylindrical member being adapted to expand said aperture by penetrating said bow net and separating said flexible filaments.
Claim 9
Dependent Claim
62 words
The twisting device defined in claim 5 further comprising a rotary grip holder having a chamber for containing said yarn grip and including a tubular terminal section positioned so as to surround at least that portion of said insertion device adjacent said yarn grip outlet, said grip holder being adapted to rotate coaxially with said yarn grip and to drive the latter.
Claim 10
Dependent Claim
67 words
The twisting device defined in claim 8 wherein said yarn grip is fixedly secured relative to said chamber and further includes: a. a body, b. a plurality of arched flexible filaments defining a bow net and an axially extending bundle which defines said through aperture within said yarn grip, c. said side entry slot providing lateral access from the periphery of said body to said through aperture.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |