US3885496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for applying ink to the inking roller of an offset printing press
Assignee: Roland Offsetmaschinenfabrik Faber and Schleicher AG
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Filing: 1973-08-22
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Granted: 1975-05-27
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Expires: 1993-08-22
Abstract
Abstract An inking device for supplying a film of ink to a printing cylinder in a printing press which includes a housing having a plurality of cup-like discs journaled side by side therein. Structure is provided for continuously feeding ink to the discs and for rotating the discs at high speed so that the ink is slung radially outward by centrifugal force in a finely divided stream through a registering aperture. To control the rate of flow a shutter is movably interposed in the stream. A sump is provided at the bottom of the housing with feeding apparatus including a pump and ink feed line for pumping ink to each of the discs. Alternatively, a feed screw is provided extending from the sump to each of the discs for feeding ink directly to the center of the disc. A scraper apparatus is provided at the periphery of the disc for intercepting the major portion of the ink, thereby to control the amount of ink which is actively discharged in the stream and to maintain the remainder in liquid form. Finally, a heater is used to heat the walls within the device upon which the ink tends to collect so that the viscosity of the ink is reduced for prompt return to the sump.
Inventors
- 👤 Peter Breitweg
- 👤 Karl-Heinz Franz
- 👤 Peter Mayer
- 👤 Klaus Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:17
CPC Classifications
B; B41; B41F; B41F31/00; B41F31/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
In an inking device for supplying a film of ink to a printing cylinder in a printing press comprising, in combination, an ink roller, a frame, a cup-like disc horizontally oriented and journaled in the frame, the disc having a peripheral lip, means for continuously depositing ink on the disc, means for rotating the disc at high speed so that the ink deposited thereon flows in a thin layer to the lip of the disc and is ejected radially outwardly therefrom by centrifugal force in a finely divided spray, a shield mounted on the frame and spaced outwardly from the disc to surround the same and having an opening at the bottom, the shield having an aperture adjacent the ink roller, and scraper blade means engaging the lip of the disc in the region remote from the aperture to prevent ejection of ink from the lip in the form of spray in the region of the scraper means while permitting ejection of ink spray in the region of the aperture and onto the surface of the ink roller.
Claim 2
Dependent Claim
178 words
In an inking device for supplying a film of ink to a printing cylinder in a printing press comprising, in combination, an ink roller, a frame, a cup-like disc horizontally oriented and journaled in the frame, the disc having a peripheral lip, means for continuously depositing ink on the disc, means for rotating the disc at high speed so that the ink deposited thereon flows in a thin layer to the lip of the disc and is ejected radially outwardly therefrom by centrifugal force in a finely divided spray, a shield mounted on the frame and spaced outwardly from the disc to surround the same and having an opening at the bottom, the shield having an aperture adjacent the ink roller, and scraper blade means engaging the lip of the disc in the region remote from the aperture to prevent ejection of ink from the lip in the form of spray in the region of the scraper means while permitting ejection of ink spray in the region of the aperture and onto the surface of the ink roller.
Claim 3
Dependent Claim
45 words
The combination as claimed in claim 1 in which the scraper blade means is in the form of a plurality of spaced blades extending inwardly with respect to the shield with the tip portions of the blades being in constant scraping engagement with the lip.
Claim 4
Dependent Claim
60 words
The combination as claimed in claim 2 in which the blades are carried by the shield, penetrating the shield at peripherally spaced points and in which the blades bear a uniform direction of angle with respect to the lip, the shield and the blades carried thereby being bodily rotatable with respect to the frame about the axis of the disc.
Claim 5
Dependent Claim
50 words
The combination as claimed in claim 1 in which the shield is intimately surrounded by a heating element adjacent the scraper blade means so that the ink which is scraped off is maintained in a freely flowing liquid state for passage through the opening at the bottom of the shield.
Claim 6
Dependent Claim
242 words
In an inking devIce for supplying a film of ink to a printing cylinder in a printing press comprising, in combination, an ink roller, a frame, a cup-like disc horizontally oriented and journaled in the frame, the disc having a flat peripheral lip, means for continuously depositing ink on the disc, means for rotating the disc at high speed so that the ink deposited thereon flows in a thin layer to the lip of the disc and is ejected radially outwardly therefrom by centrifugal force in a finely divided spray, a cylindrical shield mounted on the frame and spaced outwardly from the disc to surround the same and having an opening at the bottom, the shield having an aperture adjacent the ink roller, a plurality of scraper blades mounted in intimate penetrating relation in the shield and convergently angled so that their tips flatly overlie the lip of the disc in the region remote from the aperture to prevent ejection of ink from the lip in the form of spray in the region of the scraper blades while permitting ejection of ink spray in the region of the aperture and onto the surface of the ink roller, the shield having a heating element closely surrounding the same in a position adjacent the blades for insuring that the ink scraped from the lip is in freely flowing liquid form for constant passage from the blades and along the side walls of the shield.
Claim 7
Dependent Claim
242 words
In an inking devIce for supplying a film of ink to a printing cylinder in a printing press comprising, in combination, an ink roller, a frame, a cup-like disc horizontally oriented and journaled in the frame, the disc having a flat peripheral lip, means for continuously depositing ink on the disc, means for rotating the disc at high speed so that the ink deposited thereon flows in a thin layer to the lip of the disc and is ejected radially outwardly therefrom by centrifugal force in a finely divided spray, a cylindrical shield mounted on the frame and spaced outwardly from the disc to surround the same and having an opening at the bottom, the shield having an aperture adjacent the ink roller, a plurality of scraper blades mounted in intimate penetrating relation in the shield and convergently angled so that their tips flatly overlie the lip of the disc in the region remote from the aperture to prevent ejection of ink from the lip in the form of spray in the region of the scraper blades while permitting ejection of ink spray in the region of the aperture and onto the surface of the ink roller, the shield having a heating element closely surrounding the same in a position adjacent the blades for insuring that the ink scraped from the lip is in freely flowing liquid form for constant passage from the blades and along the side walls of the shield.
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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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |