US3828828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guiding comb for picking the weft by a stream of gaseous pressure medium
Assignee: Zbrojovka Vsetin np
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Filing: 1972-02-22
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Granted: 1974-08-13
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Expires: 1992-02-22
Abstract
Abstract A guiding comb for shuttleless looms for picking the weft thread into the shed of the loom, having teeth which can be adjusted in two angular positions, in the first one where the picking openings of the teeth form a practically completely closed channel, and in a second one, where gaps are created between adjacent teeth, enabling their entrance into and removal from the system of warp threads forming the shed.
Inventors
- 👤 J Cernocky
- 👤 M Riha
- 👤 J Martinec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:08
CPC Classifications
D; D03; D03D; D03D47/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
190 words
In a jet loom having a batten, and in which weft thread is picked by stream of a gaseous pressure medium through sheds formed in warp threads, the improvement which comprises a comb mounted on said batten for guiding a stream of gaseous pressure medium through successive sheds, the comb having teeth each of which is provided with a stem, means on the batten for pivotally supporting the stems of said teeth in alignment along the length of the batten, and means for synchronously turning all of the teeth about the axis of their stems from a first terminal position in which the teeth lie transverse to the length of the batten and present warp thread receiving slots therebetween thereby permitting their entrance into and their removal from the system of warp threads forming the sheds in a loom, to a second terminal position in which the interfaces between successive teeth lie at acute angles with respect to the length of the batten with adjacent interfaces being in substantial interengagement, whereby the teeth form an elongated substantially closed hollow body having a passage therethrough for the picking of the weft.
Claim 2
Dependent Claim
190 words
In a jet loom having a batten, and in which weft thread is picked by stream of a gaseous pressure medium through sheds formed in warp threads, the improvement which comprises a comb mounted on said batten for guiding a stream of gaseous pressure medium through successive sheds, the comb having teeth each of which is provided with a stem, means on the batten for pivotally supporting the stems of said teeth in alignment along the length of the batten, and means for synchronously turning all of the teeth about the axis of their stems from a first terminal position in which the teeth lie transverse to the length of the batten and present warp thread receiving slots therebetween thereby permitting their entrance into and their removal from the system of warp threads forming the sheds in a loom, to a second terminal position in which the interfaces between successive teeth lie at acute angles with respect to the length of the batten with adjacent interfaces being in substantial interengagement, whereby the teeth form an elongated substantially closed hollow body having a passage therethrough for the picking of the weft.
Claim 3
Dependent Claim
50 words
Guiding comb as set forth in claim 1, the teeht having openings therethrough, said openings in the second terminal position of the teeth lying coaxial, the internal walls of the openings of the teeth in said second terminal position forming a smooth and completely closed channel for picking the weft.
Claim 4
Dependent Claim
65 words
Guiding comb as seth forth in claim 1, wherein the circumference of each of said teeth is interrupted by an exit slot for the removal of the pick weft thread, said slot so located that in said first terminal position of the comb teeth said exit slots are in register, and in the second terminal position of the comb teeth said exit slots are offset.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |