US3766950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for wave-weaving
Assignee: Vyzkumny Ustav Bavlnarsky AS
•
Filing: 1971-04-23
•
Granted: 1973-10-23
•
Expires: 1991-04-23
Abstract
Abstract Method of and apparatus for weaving in wave-weaving machines with mechanical weft shutters and a rotary reed. The time sequences of the operations of weft insertion and shed cleaning overlap the beat-up of the preceding weft. The course of phases in constituting the fabric is terminated by the transfer of the weft to the fabric fell, this time interval covering the repeated beat-up of the preceding weft and the binding of the inserted weft by the warp.
Inventors
- 👤 V Vasek
- 👤 Z Pospisil
- 👤 F Jekl
- 👤 S Nosek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:20
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/26; D03D47/262; D03D47/263
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
212 words
A method of weaving a fabric in wave weaving machines with mechanical weft shuttles travelling successively across the warp width and with a helical rotary reed composed of a plurality of segments each having at least one weft-receiving recess and at least the same number of beat-up projections, and with means for forming sheds successively across the warp width, comprising the following sequence of steps: successively inserting weft by means of said weft shuttles into said weft receiving recesses in separate sheds, shed cleaning by said shuttles, transferring each weft to the fell of the fabric by respective ones of each of the recesses, binding each weft with the warp and beating-up each inserted weft into the fell of the fabric by said beat-up projections, following said beating-up by an eventually repeated beating-up by another of said beat-up projections, the sequence of said steps of weaving a fabric taking place within the forming of the one shed being overlapped in the direction of the weft insertion by the sequence of said steps of weaving fabric taking place within the forming of the following shed, at least a part of the transfer and the beat-up of the inserted weft taking place simultaneously with the shed cleaning and the insertion of the succeeding weft.
Claim 2
Independent Claim
212 words
A method of weaving a fabric in wave weaving machines with mechanical weft shuttles travelling successively across the warp width and with a helical rotary reed composed of a plurality of segments each having at least one weft-receiving recess and at least the same number of beat-up projections, and with means for forming sheds successively across the warp width, comprising the following sequence of steps: successively inserting weft by means of said weft shuttles into said weft receiving recesses in separate sheds, shed cleaning by said shuttles, transferring each weft to the fell of the fabric by respective ones of each of the recesses, binding each weft with the warp and beating-up each inserted weft into the fell of the fabric by said beat-up projections, following said beating-up by an eventually repeated beating-up by another of said beat-up projections, the sequence of said steps of weaving a fabric taking place within the forming of the one shed being overlapped in the direction of the weft insertion by the sequence of said steps of weaving fabric taking place within the forming of the following shed, at least a part of the transfer and the beat-up of the inserted weft taking place simultaneously with the shed cleaning and the insertion of the succeeding weft.
Claim 3
Dependent Claim
34 words
A method of weaving as claimed in claim 1, wherein the weft is inserted into the shed outside the paTh of a transition edge terminating the recess of a segment of the rotary reed.
Claim 4
Dependent Claim
65 words
A method of weaving as claimed in claim 1, wherein the section of weft transferred to the fell of the fabric has a substantially rectilinear position corresponding to a tangent laid in the weaving plane by an outlet of the weft to the helix of the helical rotary reed, said helix being concentric with the axis of the rotary reed and touching the weaving plane.
Claim 5
Dependent Claim
60 words
A method of weaving as claimed in claim 3, comprising transferring the weft from the outlet of a weft shuttle into the recess of the segments of the rotary reed by the successive action of the transfer edges of the recesses in the segments upon the tensioned weft, and synchronizing the movements of the weft shuttle and the rotary reed.
Claim 6
Dependent Claim
39 words
A method of weaving as claimed in claim 1, comprising performing the beat-up of the weft into the fabric simultaneously with the passage of the recess of the segment terminating the transition edges through one of the shed branches.
Claim 7
Dependent Claim
214 words
In a wave-weaving machine, the combination comprising heddles for forming the wave-travelling sheds, a rotary reed formed of segments arranged equidistantly from each other on a shaft, each segment havng at least one weft-receiving recess, at least the same number of beat-up projections, and at least the same number of openings, said openings being arranged between the recess and the beat-up projection with respect to the rotation of the reed, the segments being turned through the same angle and forming a helix, weft inserting shuttles consisting of front and rear parts different in their shape, the dimensions of the cross-section of the front part of each shuttle overlapping at at least one point the distance of the warp threads from the weaving plane at a fully opened shed, the shuttles being provided with shed-cleaning edges, the outlet of the weft being situated in the rear part which is smaller in cross-section, a straight line laid from the outlet of the weft through the recesses of segments of the rotary reed corresponding substantially to a tangent laid into the weaving plane from the outlet of the weft shuttle to the helix of the rotary reed, said helix being wound around a cylinder concentric to the axis of the rotary reed and touching the weaving plane.
Claim 8
Dependent Claim
214 words
In a wave-weaving machine, the combination comprising heddles for forming the wave-travelling sheds, a rotary reed formed of segments arranged equidistantly from each other on a shaft, each segment havng at least one weft-receiving recess, at least the same number of beat-up projections, and at least the same number of openings, said openings being arranged between the recess and the beat-up projection with respect to the rotation of the reed, the segments being turned through the same angle and forming a helix, weft inserting shuttles consisting of front and rear parts different in their shape, the dimensions of the cross-section of the front part of each shuttle overlapping at at least one point the distance of the warp threads from the weaving plane at a fully opened shed, the shuttles being provided with shed-cleaning edges, the outlet of the weft being situated in the rear part which is smaller in cross-section, a straight line laid from the outlet of the weft through the recesses of segments of the rotary reed corresponding substantially to a tangent laid into the weaving plane from the outlet of the weft shuttle to the helix of the rotary reed, said helix being wound around a cylinder concentric to the axis of the rotary reed and touching the weaving plane.
Claim 9
Dependent Claim
60 words
Apparatus according to claim 6, wherein the weft-receiving recess of segment is constituted by at least two edges disposed at an obtuse angle at the transition points with respect to the circumferential edges, the bottom of said recess being located inside a circle which is concentric with the center of rotation of the segment and which touches the weaving plane.
Claim 10
Dependent Claim
116 words
Apparatus according to claim 7, wherein one of said edges is a guiding edge and the other of said edges is a transfer edge, said edges have the shape of involutes the origins of which are located on a basic circle which is concentric with the center of rotation of a segment and which touches the weaving plane, said involutes intersecting each other on a circle line which is concentric with the basic circle and passes through the point of intersection of the weaving plane and the perpendicular dropped to it through the point of passage of the transition curve of the upper shed of the fully opened warp threads towards the end of the fabric.
Claim 11
Dependent Claim
49 words
Apparatus as claimed in claim 7, wherein the beat-up projections have a form of at least two curvilinear parts mutually forming an obtuse angle, the projection which last contacts the weft being formed with a radius of at least the same value as the radius of the preceding projections.
Claim 12
Dependent Claim
43 words
Apparatus as claimed in claim 9, wherein the sections of the projections beating-up the weft have the form of a curve, the distance of which from the center of the segment in the direction opposite to its rotation increases more rapidly than rectilinearily.
Claim 13
Dependent Claim
72 words
Apparatus as claimed in claim 6, wherein the surface of the cross-section of the rear part of the weft shuttle forms part of the sUrface of an acute angle with its vertex being located in the weaving plane at the point of a perpendicular projection of the transition edge passing through the upper branch of the fully opened shed and its sides passing through the eyelets of heddles upon their full stroke.
Claim 14
Dependent Claim
91 words
Apparatus as claimed in claim 6, wherein the rear part of the weft shuttle has at least one recess, the surface of the cross-section through the rear part of weft shuttle at the deepest points of the deepest recesses forming part of a surface of an acute angle with its vertex being located in the weaving plane at the point of a perpendicular projection of the transition edge passing through the upper branch of a fully-opened shed and its sides passing through the eyelets of the heddles upon their full stroke.
Claim 15
Dependent Claim
63 words
Apparatus as claimed in claim 12, wherein the deepest points of the deepest recesses in the rear part of the weft shuttle are arranged at points corresponding to the passage points of the transition curve of the recess of the segment of the lower or upper branch, respectively, of the least opened warp threads of shed upon the full stroke of the heddles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |