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US3916935A
Expired / Lapsed
US
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Apparatus for the storage of weft threads
Assignee: Ruti Machinery Works Ltd
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Filing: 1974-06-03
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Granted: 1975-11-04
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Expires: 1994-06-03
Abstract
Abstract The present invention relates to an apparatus for the storage of a weft thread of specific length in a weaving machine which comprises a rotatable shell wall formed as the generated surface of a truncated cone, and a nozzle for conveying a thread which is to be stored during the weaving process.
Inventors
- 👤 Rachid Keldany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:33
CPC Classifications
D; D03; D03D; D03D47/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
128 words
Apparatus for the storage of weft thread of variable length before insertion into a shed of a loom, comprising a shell wall formed as the generated surface of a truncated cone, there being arranged at the place where the base cross-section of the truncated cone is situated an end wall which is fixed to the shell wall and which defines centrally an aperture for the exit of the stored thread, a thread feeding nozzle producing an air stream for feeding the thread to be stored, said shell wall being rotatable and provided with a plurality of apertures, said nozzle being directed toward the inner side of the shell wall to convey the weft thread toward the inner side of said shell wall to cause it to rest thereon.
Claim 2
Dependent Claim
128 words
Apparatus for the storage of weft thread of variable length before insertion into a shed of a loom, comprising a shell wall formed as the generated surface of a truncated cone, there being arranged at the place where the base cross-section of the truncated cone is situated an end wall which is fixed to the shell wall and which defines centrally an aperture for the exit of the stored thread, a thread feeding nozzle producing an air stream for feeding the thread to be stored, said shell wall being rotatable and provided with a plurality of apertures, said nozzle being directed toward the inner side of the shell wall to convey the weft thread toward the inner side of said shell wall to cause it to rest thereon.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1 in which said nozzle is directed towards a region of relatively small diameter of the shell wall.
Claim 4
Dependent Claim
40 words
Apparatus according to claim 1 in which in the top end cross-section of the truncated cone there is situated a stationary cover wall to which the nozzle is fixed and that the weft thread is fed through this cover wall.
Claim 5
Dependent Claim
40 words
Apparatus according to claim 1 in which a thread brake is positioned outside the centrally defined aperture through which the stored length of weft thread is passed after passing through the aperture defined in the center of the end wall.
Claim 6
Dependent Claim
17 words
Apparatus according to claim 1 in which the shell wall is provided with a plurality of apertures.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 5 in which the plurality of apertures is provided by a shell wall formed from a perforated plate.
Claim 8
Dependent Claim
37 words
Apparatus according to claim 1 in which in the interior of the shell wall there is situated a stationary member which forms, with the shell wall and the end wall, an intermediate space of approximately uniform width.
Claim 9
Dependent Claim
55 words
Apparatus according to claim 7 in which the stationary member comprises at its side directed towards the end wall a conical boundary surface, the apex of which is situated on the axis of rotation of the said rotating shell wall and at a distance from the aperture provided in the center of the end wall.
Claim 10
Dependent Claim
15 words
Apparatus according to claim 7 in which the nozzle is built into the stationary member.
Claim 11
Dependent Claim
15 words
Apparatus according to claim 7 in which the stationary member is made of light metal.
Claim 12
Dependent Claim
60 words
Apparatus according to claim 1 in which along one of the external circular boundaries of the shell wall there is provided a circular driving surface which abuts against a further circular driving surface connected rigidly to a cylinder about which the weft thread is guided in several turns, the weft thread being entrained by the cylinder when the latter rotates.
Claim 13
Dependent Claim
100 words
Apparatus according to claim 1 in which a driving wheel is provided with a driving surface which is rotatable about an axis and over the periphery of which there are provided a plurality of rotatable shell walls formed as the generated surface of a truncated cone, each wall with a nozzle directed towards a region of small diameter of the internal side of each shell wall, said shell walls being adapted to be driven by the driving surface, and that a rotatable cylinder for entraining and feeding one weft thread in each case can be co-rotated with each shell wall.
Claim 14
Dependent Claim
23 words
Apparatus according to claim 12 in which each cylinder can be coupled selectively each with one of the shell walls for rotation therewith.
Claim 15
Dependent Claim
37 words
Apparatus according to claim 12 in which the driving surface of the driving wheel is of conical shape and the shell walls can be displaced along the driving surface to regions thereof which are of different diameter.
References Cited (Backward Citations)
US3365139A
Cited
US3799211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |