US3895575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metering bar assembly for ink fountain roller
Assignee: Roland Offsetmaschinenfabrik Faber and Schleicher AG
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Filing: 1973-06-20
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Granted: 1975-07-22
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Expires: 1993-06-20
Abstract
Abstract An ink fountain having a composite metering bar made up of a plurality of alined sections or slides spaced parallel to one another, the bar being mounted in a horizontal slot formed in the frame of the fountain and in abutting relation with the surface of the roller. The sections are embedded in a strip of flexible plastic or the like which bridges the sections so as to present to the roller a continuous metering edge and so as to present to the walls of the slot continuous sealing surfaces, while nevertheless permitting individual endwise movement of each section toward and away from the roller independently of the adjacent sections. An eccentric is connected to each of the sections at a point remote from the presented edge for adjusting the position of the section with respect to the roller thereby to adjust the thickness of the ink film in respective zones.
Inventors
- 👤 Bert Cappel
- 👤 Siegfried Schuhmann
- 👤 Klaus Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:48
CPC Classifications
B; B41; B41F; B41F31/00; B41F31/02; B41F31/04; B41F31/045; B41P; B41P2231/00; B41P2231/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
308 words
In an ink fountain, the combination comprising, a frame defining a horizontal retaining slot having parallel walls, a fountain roller rotatable in the frame adjacent the slot, a composite metering bar mounted in the slot and having a presented edge arranged in abutting relation with the surface of the roller, the frame being shaped to support a body of ink adjacent the metering bar so that a film of ink is formed on the roller by the bar as the roller is rotated, the metering bar being made up of a series of slides uniformly spaced from one another along the fountain roller, the slides having individually presented tips in longitudinal alinement to define zones of adjustment of the ink film, means including tough resilient material intimately occupying the spaces between the slides and covering the presented tips of the slides for bridging the slides so as to present to the roller a continuous metering edge of resilient material and so as to present to the respective walls of the slot continuous sealing surfaces while nevertheless permitting individual endwise relative movement of each slide toward and away from the roller independently of the adjacent slides, and separate adjusting means connected to each of the slides at a point remote from the presented edge for adjusting the endwise position of the slide in both directions with respect to the roller thereby to adjust the thickness of the ink film, the slides being relatively wide at the tips but of narrow width behind the tips thereby to provide a substantial width of resilient material between the slides in the region behind the tips to more readily absorb shear stress as adjacent slides are moved with respect to one another, the slides being substantially free of the resilient material rearwardly of the slot to facilitate independent movement of the adjusting means.
Claim 2
Dependent Claim
308 words
In an ink fountain, the combination comprising, a frame defining a horizontal retaining slot having parallel walls, a fountain roller rotatable in the frame adjacent the slot, a composite metering bar mounted in the slot and having a presented edge arranged in abutting relation with the surface of the roller, the frame being shaped to support a body of ink adjacent the metering bar so that a film of ink is formed on the roller by the bar as the roller is rotated, the metering bar being made up of a series of slides uniformly spaced from one another along the fountain roller, the slides having individually presented tips in longitudinal alinement to define zones of adjustment of the ink film, means including tough resilient material intimately occupying the spaces between the slides and covering the presented tips of the slides for bridging the slides so as to present to the roller a continuous metering edge of resilient material and so as to present to the respective walls of the slot continuous sealing surfaces while nevertheless permitting individual endwise relative movement of each slide toward and away from the roller independently of the adjacent slides, and separate adjusting means connected to each of the slides at a point remote from the presented edge for adjusting the endwise position of the slide in both directions with respect to the roller thereby to adjust the thickness of the ink film, the slides being relatively wide at the tips but of narrow width behind the tips thereby to provide a substantial width of resilient material between the slides in the region behind the tips to more readily absorb shear stress as adjacent slides are moved with respect to one another, the slides being substantially free of the resilient material rearwardly of the slot to facilitate independent movement of the adjusting means.
Claim 3
Dependent Claim
93 words
The combination as claimed in claim 1 in which the spaced slides are embedded in a longitudinally extending molded strip of tough resilient material of rectangular cross section having top and bottom surfaces which respectively engage the walls of the slot formed in the frame for sealing the composite bar to the frame and a front edge surface covering the tips of the slides to provide a contInuous metering edge, the strip of tough resilient material being sufficiently flexible as to permit endwise movement of each slide substantially independently of the adjacent slides.
Claim 4
Dependent Claim
107 words
The combination as claimed in claim 1, each slide having remotely located with respect to its presented tip an eccentric of limited lateral throw having an axis perpendicular to the plane of the slide for the purpose of adjusting the endwise position of the slide, each slide being elongated in a direction radially of the fountain roller and having a shank free of lateral obstruction, the length of the slide being sufficient so that the lateral throw of the eccentric incident to imparting adjusting movement to the slide has substantially no effect upon the angling of the presented tip of the slide with respect to the roller.
Claim 5
Dependent Claim
64 words
The combination as claimed in claim 1, each slide having a flat head portion of generally triangular outline, an elongated shank portion and an annular remote end portion, the remote end portion intimately enclosing an anti-friction bearing having means at its center for imparting eccentric motion for individual longitudinal adjustment of the slide, the portions of the slide being formed integrally with one another.
Claim 6
Dependent Claim
278 words
In an ink fountain, the combination comprising, a frame defining a horizontal slot having parallel walls, a fountain roller rotatable in the frame adjacent the slot, a composite metering bar in the slot and having a presented edge arranged in abutting relation to the surface of the roller, the frame being shaped to support a body of ink adjacent the metering bar so that a film of ink is formed on the roller by the bar as the roller is rotated, the metering bar being made up of a series of slides uniformly spaced along the fountain roller to define zones of adjustment of the ink film, means including tough resilient material intimately occupying the spaces between the slides for bridging the slides so as to present to the roller a continuous metering edge and so as to present to the walls of the slot continuous sealing surfaces while nevertheless permitting individual endwise sliding movement of each slide toward and away from the roller independently of the adjacent slides, and adjusting means connected to each of the slides at a point remote from the presented edge for adjusting the position of the slide with respect to the roller thereby to adjust the thickness of the ink film, the tough resilient material being in the form of a longitudinally extending molded strip of rectangular cross section with the spaced slides being embedded therein, the presented portions of the slides being closely spaced and the portion of each slide which is embedded in the molded strip being of tapering profile to increase the average spacing between the slides thereby to increase the mobility of each slide relative to the next.
Claim 7
Dependent Claim
278 words
In an ink fountain, the combination comprising, a frame defining a horizontal slot having parallel walls, a fountain roller rotatable in the frame adjacent the slot, a composite metering bar in the slot and having a presented edge arranged in abutting relation to the surface of the roller, the frame being shaped to support a body of ink adjacent the metering bar so that a film of ink is formed on the roller by the bar as the roller is rotated, the metering bar being made up of a series of slides uniformly spaced along the fountain roller to define zones of adjustment of the ink film, means including tough resilient material intimately occupying the spaces between the slides for bridging the slides so as to present to the roller a continuous metering edge and so as to present to the walls of the slot continuous sealing surfaces while nevertheless permitting individual endwise sliding movement of each slide toward and away from the roller independently of the adjacent slides, and adjusting means connected to each of the slides at a point remote from the presented edge for adjusting the position of the slide with respect to the roller thereby to adjust the thickness of the ink film, the tough resilient material being in the form of a longitudinally extending molded strip of rectangular cross section with the spaced slides being embedded therein, the presented portions of the slides being closely spaced and the portion of each slide which is embedded in the molded strip being of tapering profile to increase the average spacing between the slides thereby to increase the mobility of each slide relative to the next.
Claim 8
Dependent Claim
277 words
In an ink fountain, the combination comprising, a frame defining a horizontal slot having parallel walls, a fountain roller rotatable in the frame adjacent the slot, a composite metering bar in the slot and having a presented edge arranged in abutting relation to the surface of the roller, the frame being shaped to support a body of ink adjacent the metering bar so that a film of ink is formed on the roller by the bar as the roller is rotated, the metering bar being made up of a series of slides uniformly spaced along the fountain to define zones of adjustment of the ink film, means including tough resilient material intimately occupying the spaces between the slides for bridging the slides so as to present to the roller a continuous metering edge and so as to present to the walls of the slot continuous sealing surfaces while nevertheless permitting individual endwise sliding movement of each slide toward and away from the roller independently of the adjacent slides, and adjusting means connected to each of the slides at a point remote from the presented edge for adjusting the position of the slide with respect to the roller thereby to adjusT the thickness of the ink film, the tough resilient material being in the form of a longitudinally extending molded strip of rectangular cross section with the spaced slides being embedded therein, the slides having land surfaces occupying the central portions thereof, which land surfaces are co-planar with respect to the upper and lower surfaces of the strip of resilient material for precise and uniform positioning of each slide within the slot and to provide positive lateral support.
Claim 9
Dependent Claim
277 words
In an ink fountain, the combination comprising, a frame defining a horizontal slot having parallel walls, a fountain roller rotatable in the frame adjacent the slot, a composite metering bar in the slot and having a presented edge arranged in abutting relation to the surface of the roller, the frame being shaped to support a body of ink adjacent the metering bar so that a film of ink is formed on the roller by the bar as the roller is rotated, the metering bar being made up of a series of slides uniformly spaced along the fountain to define zones of adjustment of the ink film, means including tough resilient material intimately occupying the spaces between the slides for bridging the slides so as to present to the roller a continuous metering edge and so as to present to the walls of the slot continuous sealing surfaces while nevertheless permitting individual endwise sliding movement of each slide toward and away from the roller independently of the adjacent slides, and adjusting means connected to each of the slides at a point remote from the presented edge for adjusting the position of the slide with respect to the roller thereby to adjusT the thickness of the ink film, the tough resilient material being in the form of a longitudinally extending molded strip of rectangular cross section with the spaced slides being embedded therein, the slides having land surfaces occupying the central portions thereof, which land surfaces are co-planar with respect to the upper and lower surfaces of the strip of resilient material for precise and uniform positioning of each slide within the slot and to provide positive lateral support.
Claim 10
Dependent Claim
47 words
The combination as claimed in claim 6 in which the walls of the slot are longitudinally grooved and in which the grooves thus formed are occupied by resilient sealing material, each groove being so located that the sealing material engages the land surfaces on the successive sides.
Claim 11
Dependent Claim
280 words
In an ink fountain the combination comprising a frame defining a horizontal slot having parallel walls, a fountain roller rotatable in the frame adjacent the slot, a plurality of metering bar slides mounted in the slot arranged in a plane parallel to one another and with their tips spaced from one another, each of the slides having a flat head portion with the tips thereon arranged to abut the roller and having a shank terminating in a remote end portion, the frame being shaped to support a body of ink adjacent the metering bar and in contact with the roller, the head portions being embedded in a continuous strip of tough resilient material which bridgingly interconnects the head portions and intimately occupies the spaces therebetween so as to present to the roller a continuous metering edge and to present to the walls of the slot flat continuous sealing surfaces to prevent leakage of ink, the strip being sufficiently flexible as to permit individual endwise sliding movement of each slide toward and away from the roller independently of the adjacent slides, and a motor driven eccentric having an axis perpendicular to the plane of the slides and captively coupled to the remote end portion of each of the slides for longitudinal adjustment of the slide in both directions thereby to adjust the thickness of the ink film in the region of the slide, the shank portions of the slides adjacent the eccentrics being elongated and free of the tough, resilient material so as to be freely movable in the lateral direction in response to throw of the associated eccentric thereby to reduce the driving power required to effect a longitudinal adjustment.
Claim 12
Dependent Claim
280 words
In an ink fountain the combination comprising a frame defining a horizontal slot having parallel walls, a fountain roller rotatable in the frame adjacent the slot, a plurality of metering bar slides mounted in the slot arranged in a plane parallel to one another and with their tips spaced from one another, each of the slides having a flat head portion with the tips thereon arranged to abut the roller and having a shank terminating in a remote end portion, the frame being shaped to support a body of ink adjacent the metering bar and in contact with the roller, the head portions being embedded in a continuous strip of tough resilient material which bridgingly interconnects the head portions and intimately occupies the spaces therebetween so as to present to the roller a continuous metering edge and to present to the walls of the slot flat continuous sealing surfaces to prevent leakage of ink, the strip being sufficiently flexible as to permit individual endwise sliding movement of each slide toward and away from the roller independently of the adjacent slides, and a motor driven eccentric having an axis perpendicular to the plane of the slides and captively coupled to the remote end portion of each of the slides for longitudinal adjustment of the slide in both directions thereby to adjust the thickness of the ink film in the region of the slide, the shank portions of the slides adjacent the eccentrics being elongated and free of the tough, resilient material so as to be freely movable in the lateral direction in response to throw of the associated eccentric thereby to reduce the driving power required to effect a longitudinal adjustment.
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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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |