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US3933183A
Expired / Lapsed
US
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Method of and weft inserter for eliminating a chain formation of wefts not transferred into the beat-up position in travelling-wave shedding looms
Assignee: Vyzkumny Ustav Bavlnarsky AS
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Filing: 1974-10-21
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Granted: 1976-01-20
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Expires: 1994-10-21
Abstract
Abstract Method of and apparatus for eliminating a chain formation of wefts not transferred into the beat-up position of a travelling-wave shedding loom with weft inserters and a rotary reed comprising discs with cutouts for engaging weft and displacing it to the fabric fell. An interwoven but not transferred weft is introduced into the cutouts of the discs of the rotary reed; such cutouts corresponding to the next weft inserter, in lieu of the weft from said next weft inserter. The weft from the next weft inserter is introduced into the cutouts of the discs of the rotary reed, such cutouts corresponding to the next following weft inserter. Due to this phase-shift corresponding to the distance between two weft inserters following after each other, all the other wefts are successively directed into the cutouts of the discs of the rotary reed until the loom stops.
Inventors
- 👤 Vladimir Mateju
- 👤 Zdenek Zabrodsky
- 👤 Vitezslav Vasek
- 👤 Frantisek Jekl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:07
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
Method of eliminating a chain formation of wefts not transferred into the beat-up position in a travelling-wave shedding loom with weft inserters and a rotary seed comprising discs with cutouts for engaging weft and displacing it to the fabric fell, the method comprising introducing an interwoven but not transferred weft into the cutouts of the discs of the rotary reed which correspond to the next weft inserter, in lieu of the weft from said next weft inserter.
Claim 2
Dependent Claim
77 words
Method of eliminating a chain formation of wefts not transferred into the beat-up position in a travelling-wave shedding loom with weft inserters and a rotary seed comprising discs with cutouts for engaging weft and displacing it to the fabric fell, the method comprising introducing an interwoven but not transferred weft into the cutouts of the discs of the rotary reed which correspond to the next weft inserter, in lieu of the weft from said next weft inserter.
Claim 3
Dependent Claim
16 words
The method as claimed in claim 1, comprising severing the weft from the next weft inserter.
Claim 4
Dependent Claim
73 words
The method as claimed in claim 1, comprising introducing the weft from the next weft inserter into the cutouts of the discs of the rotary reed, which cutouts correspond to the next following weft inserter, whereupon due to this phase-shift corresponding to the distance between two weft inserters following after each other, all the other wefts are successively directed into the cutouts of the discs of the rotary reed until the loom stops.
Claim 5
Dependent Claim
129 words
A weft inserter for eliminating a chain formation of wefts not transferred into the beat-up position in a travelling-wave shedding loom with weft inserters and a rotary reed comprising discs with cutouts for engaging weft and displacing it to the fabric fell, an interwoven but not transferred weft being introduced into the cutouts of the next weft inserter in lieu of the weft from said next weft inserter, said weft inserter comprising a rotatable bobbin with a weft length determined for a single pick and a spreading spring for spreading warp threads, the weft inserter comprising directing means for introducing an interwoven but not transferred weft from a preceding weft inserter into the cutouts of the discs of the rotary reed, said cutouts corresponding to the next weft inserter.
Claim 6
Dependent Claim
129 words
A weft inserter for eliminating a chain formation of wefts not transferred into the beat-up position in a travelling-wave shedding loom with weft inserters and a rotary reed comprising discs with cutouts for engaging weft and displacing it to the fabric fell, an interwoven but not transferred weft being introduced into the cutouts of the next weft inserter in lieu of the weft from said next weft inserter, said weft inserter comprising a rotatable bobbin with a weft length determined for a single pick and a spreading spring for spreading warp threads, the weft inserter comprising directing means for introducing an interwoven but not transferred weft from a preceding weft inserter into the cutouts of the discs of the rotary reed, said cutouts corresponding to the next weft inserter.
Claim 7
Dependent Claim
31 words
A weft inserter as claimed in claim 4, wherein the directing means is constituted by a spring tail provided in the weft inserter between the spreading spring and a weft guide.
Claim 8
Dependent Claim
28 words
A weft inserter as claimed in claim 4, wherein the directing means is associated with the bobbin rotation blocking means, the latter being controllable by the spreading spring.
Claim 9
Dependent Claim
77 words
A weft inserter as claimed in claim 6, wherein the bobbin rotation blocking means are constituted by a ratchet wheel provided on the bobbin, and by a spring-loaded pawl adapted to cooperate with said ratchet wheel and received in the weft inserter for being displaced from an inoperative position of not engaging said ratchet wheel, into an operative position with the outstanding spreading spring, in which operative position said pawl is in engagement with said ratchet pawl.
Claim 10
Dependent Claim
32 words
A weft inserter as claimed in claim 7, wherein the pawl is resiliently forced against a plate received in a pocket-like recess in the inserter body and secured to the spreading spring.
References Cited (Backward Citations)
US3766950A
Cited
US3848641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |