US3727646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for compensating the deviations of warp tension in weaving looms
Assignee: Vyzkumny Ustav Bavlnarsky AS
•
Filing: 1971-04-23
•
Granted: 1973-04-17
•
Expires: 1991-04-23
Abstract
Abstract Apparatus for compensating the deviations of warp tension in weaving looms, especially weaving looms with simultaneous picking of weft threads into warp. Two parallel guiding support bars, spaced longitudinally of the warp, are arranged across the plane of the warp on one side thereof, said bars being provided with support edges. On the other side of the warp, opposite the portion of the warp limited by the support edges of the support bars, a warp deflecting member is arranged, said member working in counter phase with the device creating the shed.
Inventors
- 👤 M Mares
- 👤 S Nosek
- 👤 L Martinek
- 👤 V Rohlena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:04
CPC Classifications
D; D03; D03D; D03D49/00; D03D49/04; D03D49/06; D03D47/00; D03D47/12; D03D47/26; D03D47/268
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
105 words
In a weaving loom with simultaneous picking of the weft threads into progressive warp-shed and having a progressive shedproducing device, an apparatus for compensating the deviations of warp tension during the shed creation comprising two parallel support bars arranged leading across the plane of the warp on one side thereof, a rotating deflecting warp member on the other side of the warp opposite the section of the warp limited by the support bars, said rotating deflecting warp member being formed like helical cam means with at least a single helix and means for driving the member in a counterphase with the device creating the shed.
Claim 2
Dependent Claim
105 words
In a weaving loom with simultaneous picking of the weft threads into progressive warp-shed and having a progressive shedproducing device, an apparatus for compensating the deviations of warp tension during the shed creation comprising two parallel support bars arranged leading across the plane of the warp on one side thereof, a rotating deflecting warp member on the other side of the warp opposite the section of the warp limited by the support bars, said rotating deflecting warp member being formed like helical cam means with at least a single helix and means for driving the member in a counterphase with the device creating the shed.
Claim 3
Dependent Claim
35 words
Apparatus as defined in claim 1, wherein the support bars being provided with support edges and comprising means for adjusting the distance between the support edges in a plane parallel with the plane of warp.
Claim 4
Dependent Claim
38 words
Apparatus as defined in claim 1, wherein at least one support bar is arranged swingably around its longitudinal axis and is provided with two support edges, and comprising means for selectively locking said one support bar in position.
Claim 5
Dependent Claim
24 words
Apparatus as claimed in claim 3, wherein the distance of both support edges of the same support bar along its longitudinal axis is different.
Claim 6
Dependent Claim
56 words
Apparatus as claimed in claim 1, wherein at least one support bar is mounted shiftably and swingably by means of its ends in a pair of opposite oblong openings formed in the sidewalls of the weaving loom and parallel with the plane of the warp, and comprising means for selectively locking said bar in its position.
Claim 7
Dependent Claim
18 words
Apparatus according to claim 1, wherein the rotating warp deflecting member can be adjusted relative to the warp.
Claim 8
Dependent Claim
30 words
Apparatus according to claim 1, wherein the rotating warp deflecting member is mounted for shifting in the direction of the warp length in a plane which is generally parallel thereto.
Claim 9
Dependent Claim
23 words
Apparatus according to claim 1, wherein the helical cam comprises a set of partial cams which are turned with respect to one another.
Claim 10
Dependent Claim
22 words
Appparatus according to claim 8, wherein the partial cams are formed of a set of alternately arranged division laminal and deflecting laminae.
Claim 11
Dependent Claim
28 words
Apparatus according to claim 1, wherein between the rotating warp deflecting member and the warp there is disposed a spacer in order to prevent the warp from wear.
Claim 12
Dependent Claim
14 words
Apparatus according to claim 10, wherein the spacer is made of flat supple material.
Claim 13
Dependent Claim
40 words
Apparatus according to claim 8, wherein every partial cam is provided with a circumferential groove wherein there is slidably arranged a guide for a U-shaped guide member which accommodates the warp thread, the guide members being mounted on swingable holders.
Claim 14
Dependent Claim
67 words
Apparatus according to claim 12, wherein the guide members are fixedly connected with a resilient belt, one end of the belt being attached to a frame at the side of the rotating warp deflecting member opposite the direction of its rotation, the other end of the belt being attached to a tensioning spring anchored in the frame at the other side of the rotating warp deflecting member.
References Cited (Backward Citations)
US3125128A
Cited
DE174693C
Cited
DE134418C
Cited
GB190506332A
Cited
US1817203A
Cited
US1749123A
Cited
GB473667A
Cited
US2470123A
Cited
US2556055A
Cited
US2649864A
Cited
US2932325A
Cited
FR1237034A
Cited
US3342218A
Cited
US3483897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |