US3724508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for filling the shuttles with weft on progressive shed weaving looms
Assignee: Vyzkumny Ustav Bavlnarsky AS
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Filing: 1971-04-26
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Granted: 1973-04-03
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Expires: 1991-04-26
Abstract
Abstract Method of and apparatus for filling the shuttles with weft on progressive shed weaving looms with continuous movement of shuttles along a closed path by means of supply units on a part of a common rotary path along which the supply units and the shuttles move in the same direction with the same speed and at conforming spacings. In the section where the path of the shuttle and that of the supply unit coincide the weft thread is withdrawn from the supply of weft thread and deposited in the form of windings created irrespectively of the running of the weaving loom in a plane identical with the rotary plane of the shuttles in a length proportional to the total multiple of coils on a standing selectively rotatable bobbin disposed in a recess of the shuttle. After the shuttle and the supply unit have parted, the coils on the shuttle are separated from the supply, while at least one end of the supply of weft thread is already held.
Inventors
- 👤 F Jekl
- 👤 V Mateju
- 👤 J Pech
- 👤 K Hrdina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:04
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/26; D03D47/261
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
182 words
In a progressive shed weaving loom having a plurality of shuttles with bobbins moving along a closed path, and an apparatus for filling the shuttles with weft on the bobbins, said bobbins being pivotable in the plane of said closed path, the improvement comprising a weft supply, a plurality of metering devices moving along a closed path a part of which is parallel to the closed path of the shuttles, rotatable winding elements arranged on the metering devices, a drive for the winding elements which is independent of the running of the weaving loom, independent of the moving of the shuttles, and independent of the moving of metering devices, means for moving the winding elements near the bobbins of the shuttles when filling the bobbins, pincers to hold the weft when filling the bobbins, the pincers being arranged on the metering devices, means for separating the filled weft from the supply, the weft leaving the shuttle through a groove, and a device for nipping the weft and for the control of the end of the weft leaving the shuttle through the groove.
Claim 2
Dependent Claim
182 words
In a progressive shed weaving loom having a plurality of shuttles with bobbins moving along a closed path, and an apparatus for filling the shuttles with weft on the bobbins, said bobbins being pivotable in the plane of said closed path, the improvement comprising a weft supply, a plurality of metering devices moving along a closed path a part of which is parallel to the closed path of the shuttles, rotatable winding elements arranged on the metering devices, a drive for the winding elements which is independent of the running of the weaving loom, independent of the moving of the shuttles, and independent of the moving of metering devices, means for moving the winding elements near the bobbins of the shuttles when filling the bobbins, pincers to hold the weft when filling the bobbins, the pincers being arranged on the metering devices, means for separating the filled weft from the supply, the weft leaving the shuttle through a groove, and a device for nipping the weft and for the control of the end of the weft leaving the shuttle through the groove.
Claim 3
Dependent Claim
27 words
Apparatus as defined in claim 1, comprising a controllable weft limiter, said limiter being arranged on each metering device between the winding element and the weft supply.
Claim 4
Dependent Claim
28 words
Apparatus as defined in claim 2, wherein the pincers are shiftable parallel to the axis of rotation of the winding elements and are interlocked with the weft limiter.
Claim 5
Dependent Claim
39 words
Apparatus as defined in claim 1, wherein the device for nipping the weft and for the control of the end of the weft is arranged between the means for separating the filled weft and the shed of the loom.
Claim 6
Dependent Claim
32 words
Apparatus as defined in claim 4, wherein the device for nipping the weft and for the control of the end of the weft comprises two contracting rotary belts travelling in opposite directions.
Claim 7
Dependent Claim
61 words
Apparatus as defined in claim 1, wherein the groove in the shuttle is disposed at the same level as the winding elements, the groove merging with and passing over into a slot which is curved in accordance with the path of the relative movement of the winding element with respect to the shuttles when the winding element and the shuttle part.
Claim 8
Dependent Claim
23 words
Apparatus as defined in claim 6, comprising a swingably arranged cover provided with a spring for selectively covering the groove in the shuttle.
Claim 9
Dependent Claim
20 words
Apparatus as defined in claim 1, wherein the means for separating the filled weft are scissors coupled with the pincers.
Claim 10
Dependent Claim
26 words
Apparatus as defined in claim 1, wherein the pincers are placed outside the shuttle, and the outer side of the shuttle is provided with a recess.
Claim 11
Independent Claim
145 words
A method of filling the shuttles on progressive shed weaving looms with weft, said shuttles continuously moving in a closed path comprising moving weft supply units and the shuttles in the same direction with the same speed and at conforming spacing, in the section where the path of the shuttle and that of the supply unit coincide withdrawing the weft from the supply of weft and depositing it in the form of windings created irrespective of the running of the weaving loom in a plane identical with the rotary plane of the shuttles, and with a length proportional to the total multiple of windings on a standing bobbin disposed selectively rotatably in a recess of the shuttle, and, after the shuttle and the supply unit have parted, holdinG at least one end of the supply of weft and separating the weft from the supply unit.
Claim 12
Independent Claim
145 words
A method of filling the shuttles on progressive shed weaving looms with weft, said shuttles continuously moving in a closed path comprising moving weft supply units and the shuttles in the same direction with the same speed and at conforming spacing, in the section where the path of the shuttle and that of the supply unit coincide withdrawing the weft from the supply of weft and depositing it in the form of windings created irrespective of the running of the weaving loom in a plane identical with the rotary plane of the shuttles, and with a length proportional to the total multiple of windings on a standing bobbin disposed selectively rotatably in a recess of the shuttle, and, after the shuttle and the supply unit have parted, holdinG at least one end of the supply of weft and separating the weft from the supply unit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |