US3834307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary screen interrupter with squeegee lift means
Assignee: Individual
•
Filing: 1972-09-06
•
Granted: 1974-09-10
•
Expires: 1992-09-06
Abstract
Abstract A rotary screen printing machine with a plurality of rotary screens has individual screen lifting devices. Cam shafts have cam plates mounted thereon which raise rams. Each ram has two lifting surfaces. The first lifting surface raises the dye supply and squeegee device within the rotary screen. Then, the second lifting surface raises the rotary screen.
Inventors
- 👤 P Zimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:23
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/08; B41F15/0831; B41F15/0836
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
267 words
A rotary screen printing machine comprising: a fRame means for supporting material to be printed; at least two printing devices supported on said frame means for printing said material; each of said printing devices including a rotary screen, a screen holder having an undersurface and supporting said rotary screen, and a dye supply and a squeegee device positioned inside said rotary screen by means of a support; each of said printing devices having operatively connected thereto a lifting device means for first lifting said squeegee device and said dye supply within the rotary screen thereof so that said squeegee device is raised out of contact with said rotary screen, and for then lifting said rotary screen, thereby avoiding damage to said rotary screen due to the weight of said squeegee device and said dye supply during the lifting of said rotary screen; each of said lifting device means including a member mounted for movement from a first position wherein the respective rotary screen is lowered into contact with said material and said squeegee device is lowered into contact with said rotary screen, to a second position wherein said member contacts said support of said squeegee device and said dye supply to move said squeegee device out of contact with said rotary screen, and thereafter to a third position wherein said member contacts said undersurface of said screen holder for moving said rotary screen out of contact with said material; and means operatively connected to said member of each of said lifting device means for moving said members to and from said first, second and third positions thereof.
Claim 2
Dependent Claim
267 words
A rotary screen printing machine comprising: a fRame means for supporting material to be printed; at least two printing devices supported on said frame means for printing said material; each of said printing devices including a rotary screen, a screen holder having an undersurface and supporting said rotary screen, and a dye supply and a squeegee device positioned inside said rotary screen by means of a support; each of said printing devices having operatively connected thereto a lifting device means for first lifting said squeegee device and said dye supply within the rotary screen thereof so that said squeegee device is raised out of contact with said rotary screen, and for then lifting said rotary screen, thereby avoiding damage to said rotary screen due to the weight of said squeegee device and said dye supply during the lifting of said rotary screen; each of said lifting device means including a member mounted for movement from a first position wherein the respective rotary screen is lowered into contact with said material and said squeegee device is lowered into contact with said rotary screen, to a second position wherein said member contacts said support of said squeegee device and said dye supply to move said squeegee device out of contact with said rotary screen, and thereafter to a third position wherein said member contacts said undersurface of said screen holder for moving said rotary screen out of contact with said material; and means operatively connected to said member of each of said lifting device means for moving said members to and from said first, second and third positions thereof.
Claim 3
Dependent Claim
48 words
A rotary screen printing machine as claimed in claim 1, wherein said means for moving comprises at least one cam shaft mounted for rotation on said frame means; and one cam plate per screen printing device positioned on each cam shaft of said at least one cam shaft.
Claim 4
Dependent Claim
59 words
A rotary screen printing machine as claimed in claim 2, wherein said at least one cam shaft comprises two cam shafts, one each of which is provided at opposite sides of said machine extending in the direction of movement of said material to be printed, and each of said two cam shafts has one cam plate per screen device.
Claim 5
Dependent Claim
37 words
A rotary screen printing machine as claimed in claim 3, wherein each of said cam shafts are divided into sections connected by means of disengageable couplings, each of said sections having one of said cam plates thereon.
Claim 6
Dependent Claim
37 words
A rotary screen printing machine as claimed in claim 2, further comprising a driven roller and non-driven roller, a printer''s blanket running over said rollers, said at least one cam shaft being driven from said non-driven roller.
Claim 7
Dependent Claim
30 words
A rotary screen printing machine as claimed in claim 5, further comprising a shaft driven by said non-driven roller, said at least one cam shaft being driven by said shaft.
Claim 8
Dependent Claim
31 words
A rotary screen printing machine as claimed in claim 6, wherein the ratio between the rates of revolution of said at least one cam shaft and said rotary screens is integral.
Claim 9
Dependent Claim
48 words
A rotary screen printing machine as claimed in claim 2, wherein said cam plates are attached to said at least one cam shaft by means of adjusting devices, each comprising a ring tightly mounted on said cam shaft, said cam plate being adjustable with relation to said ring.
Claim 10
Dependent Claim
100 words
A rotary screen printing machine as claimed in claim 2, wherein each of said member of said lifting device means comprises a vertically movably guided cross bar having thereon a roller in contact with the respective said cam plate, said cross bar having rams extending therefrom, each of said rams having upper end means for contacting the respective said support of said dye supply and squeegee device, each of said rams further having spaced from said upper end means thereof shoulder means for contacting said undersurface of the respective said screen holder after said upper end means contact said support.
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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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |