US3848642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shed forming device
Assignee: Ruti Machinery Works Ltd
•
Filing: 1973-04-04
•
Granted: 1974-11-19
•
Expires: 1993-04-04
Abstract
Abstract The present invention covers a device for forming textile weaves on a loom having a plurality of sheds following each other in the longitudinal direction of the warp threads, wherein there are provided rows, extending transversely of the warp threads, of shedding elements alternatingly establishing the upper and lower shed and travelling along the warp threads, so that they retain the latter in their upper or lower shed position over a predetermined travel path.
Inventors
- 👤 A Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:14
CPC Classifications
D; D03; D03D; D03D41/00; D03D41/005
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
222 words
Device for producing cloth weaves on a loom having a plurality of sheds following each other in the longitudinal direction of the warp threads, wherein there are provided rows, extending transversely of the warp threads, of shedding elements alternatingly determining upper and lower sheds, which said shedding elements travel along the warp threads, so that they retain the warp threads on their upper or lower shed position over a predetermined zone, a control means arranged before the said zone for laterally deflecting each of the warp threads in accordance with a program, thereby associating each warp thread with one of the shedding elements determining the upper or lower shed, wherein said control means comprises at least one rotatable control roller, the axis of which is arranged to extend perpendicular to the warp threads and which has a plurality of warp thread guide grooves which extend, separate from each other and continuously, in juxtaposition on the generated surface of the control roller, about the latter, and extend to and fro obliquely with reference to the axis of the control roller by a predetermined amount which, according to said program, is preferably equal to the spacing of adjacent upper and lower shed elements, the locations which are outermost in the axial direction of the said grooves being control locations for controlling the warp threads.
Claim 2
Dependent Claim
222 words
Device for producing cloth weaves on a loom having a plurality of sheds following each other in the longitudinal direction of the warp threads, wherein there are provided rows, extending transversely of the warp threads, of shedding elements alternatingly determining upper and lower sheds, which said shedding elements travel along the warp threads, so that they retain the warp threads on their upper or lower shed position over a predetermined zone, a control means arranged before the said zone for laterally deflecting each of the warp threads in accordance with a program, thereby associating each warp thread with one of the shedding elements determining the upper or lower shed, wherein said control means comprises at least one rotatable control roller, the axis of which is arranged to extend perpendicular to the warp threads and which has a plurality of warp thread guide grooves which extend, separate from each other and continuously, in juxtaposition on the generated surface of the control roller, about the latter, and extend to and fro obliquely with reference to the axis of the control roller by a predetermined amount which, according to said program, is preferably equal to the spacing of adjacent upper and lower shed elements, the locations which are outermost in the axial direction of the said grooves being control locations for controlling the warp threads.
Claim 3
Dependent Claim
91 words
Device according to claim 1 in which said control means comprises a plurality of control rollers which are arranged parallel to each other and one behind the other in the direction of the warp threads, and the warp threads are associated, corresponding to their sequence, on the one hand with the control rollers in accordance with the sequence of the latter in the direction of the warp threads, and on the other hand with the guide grooves to correspond to the sequence thereof in the longitudinal direction of the control rollers.
Claim 4
Dependent Claim
69 words
Device according to claim 2 in which in each working phase for one rotation of the control rollers from one control location to the next one, there takes place a movement of the separating elements by a distance equal to the spacing between adjacent control rollers, and also a movement of the rows of shedding elements by a distance equal to the spacing between adjacent rows of shedding elements.
Claim 5
Dependent Claim
82 words
Device according to claim 3 in which the threads arranged in the upper and lower sheds in the given row of shedding elements are associated with the control locations which, with reference to the control locations of a roller adjacent the given row of shedding elements, are advanced from the rotational aspect on each of the further rollers by a number of positions equal to the number of control rollers available between the further roller and the given row of shedding elements.
Claim 6
Dependent Claim
29 words
Device according to claim 1 in which the control roller comprises a series of juxtaposed discs each of which has formed on its surface one of said guide grooves.
Claim 7
Dependent Claim
38 words
Device according to claim 1 in which the guide grooves afford, over the periphery of the control roller, a plurality of control locations and simultaneously effective, similar control locations are located on a generatrix of the control roller.
Claim 8
Dependent Claim
74 words
Device according to claim 1 in which said control means has displaceable separating elements which, in the vicinity of said control locations at which the warp threads are lifted off from the guide grooves, ''''dip'''' in between the warp threads and remain, up to a location forwardly of the shedding elements, between the warp threads, to maintain the association of the warp threads with the shedding elements until they are ''''sorted'''' into the latter.
Claim 9
Dependent Claim
69 words
Device according to claim 7 in which in each working phase for one rotation of the control rollers from one control location to the next one, there takes place a movement of the separating elements by a distance equal to the spacing between adjacent control rollers, and also a movement of the rows of shedding elements by a distance equal to the spacing between adjacent rows of shedding elements.
Claim 10
Dependent Claim
50 words
Device according to claim 1 in which each of the shedding elements has a warp thread bearing face extending in the direction of the warp threads and located at the level of the upper and lower shed and formed with a recess for guiding picking means during the weaving operation.
References Cited (Backward Citations)
IT452549A
Cited
US1594542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |