US3564996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary screen printing cylinders
Assignee: ALJABA Ltd
•
Filing: 1968-01-17
•
Granted: 1971-02-23
•
Expires: 1988-01-17
Abstract
Abstract The invention relates to the engraving of rotary screen cylinders for use in printing fabrics and the like. The required design is first engraved as a pattern of permeable and impermeable areas on a flat screen matrix. This matrix is mounted in contact with the cylinder and while it is moved in its plane and the cylinder rotates a blocking medium is forced through the matrix on to the cylinder to form the required pattern thereon.
Inventors
- 👤 Almerindo Jamie De Oliv Barros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:03
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/14; B41F; B41F15/00; B41F15/14; B41F15/34; B41F15/38
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
190 words
Apparatus for engraving a two-ply rotary screen cylinder with the negative of a pattern to be printed on textiles or the like, comprising means for mounting the rotary screen cylinder for rotation; means for mounting a flat screen matrix, carrying a positive engraving of said pattern, for movement tangentially to said cylinder and so as to rotate said cylinder; means for applying nipping pressure to the matrix and cylinder at the position at which they interengage; means for preadjusting said nipping pressure for causing a blocking medium applied to said matrix to be filled through the matrix and into the interstices of the cylinder, when the matrix is moved and the cylinder rotated, said means for applying nipping pressure comprising squeegee means engaging said matrix and an internal supporting roller located within said cylinder with the axes of said squeegee, said supporting roller and said cylinder being contained in a single plane; and adjusting roller means engaging with said supporting roller, said adjusting rollers being mounted within said cylinder for adjustable movement with said supporting roller in said single plane to adjust the nipping pressure derived from said supporting roller.
Claim 2
Dependent Claim
190 words
Apparatus for engraving a two-ply rotary screen cylinder with the negative of a pattern to be printed on textiles or the like, comprising means for mounting the rotary screen cylinder for rotation; means for mounting a flat screen matrix, carrying a positive engraving of said pattern, for movement tangentially to said cylinder and so as to rotate said cylinder; means for applying nipping pressure to the matrix and cylinder at the position at which they interengage; means for preadjusting said nipping pressure for causing a blocking medium applied to said matrix to be filled through the matrix and into the interstices of the cylinder, when the matrix is moved and the cylinder rotated, said means for applying nipping pressure comprising squeegee means engaging said matrix and an internal supporting roller located within said cylinder with the axes of said squeegee, said supporting roller and said cylinder being contained in a single plane; and adjusting roller means engaging with said supporting roller, said adjusting rollers being mounted within said cylinder for adjustable movement with said supporting roller in said single plane to adjust the nipping pressure derived from said supporting roller.
Claim 3
Dependent Claim
16 words
Apparatus as claimed in claim 1, wherein the squeegee means comprises a roller mounted for rotation.
Claim 4
Dependent Claim
26 words
Apparatus as claimed in claim 1, wherein said adjusting roller means comprises a plurality of rollers mounted for movement in said plane by screw threaded means.
Claim 5
Dependent Claim
21 words
Apparatus as claimed in claim 1, wherein loading means are provided to adjust the nipping pressure derived from said squeegee means.
Claim 6
Dependent Claim
31 words
Apparatus as claimed in claim 4, wherein the loading means comprises a receptacle for weights, said receptacle being mounted on said squeegee means said squeegee means being mounted for free-floating movement.
References Cited (Backward Citations)
US689189A
Cited
US1886846A
Cited
US2498917A
Cited
US2796164A
Cited
US3081698A
Cited
US3302561A
Cited
US3369484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |