Patent US3690253A successfully refreshed from Google Patents.
US3690253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feed press for printing small size sheets on both sides simultaneously
Assignee: Individual
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Filing: 1971-06-10
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Granted: 1972-09-12
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Expires: 1991-06-10
Abstract
Abstract This press has three rubber rollers. Two contacting rubber rollers of same diameter have 180* cut-outs receiving printing plates of any angular extent up to 180* with the rubber of each one contacting the plate of the other as these two rollers roll in opposite directions by means of gearing. When the printing plate is a full 180*, the rubber layer on one roller always contacts the printing plate of the other. The third roller is rubber all around and has a circumference equal to half of the circumference of each of the first two rollers. A single inking system applies ink to the first of the two rollers. Thus, the first of the two rollers accomplishes a double function as plate and inkroller, the second of the first two rollers has the function of a plate and blanket roller and the third smaller roller acts as a blanket and impression roller, so that a sheet fed between the second of the two rollers and the smaller roller, is printed on both sides simultaneously.
Inventors
- 👤 Paul E Dreyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:18
CPC Classifications
B; B41; B41F; B41F17/00; B41F7/00; B41F7/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
369 words
A printing press comprising inking means, a first roller positioned to receive ink from said inking means, said roller having a part cylindrical printing plate portion and a part cylindrical coextensive ink roller portion, a second roller having a part cylindrical printing plate portion and a part cylindrical blanket portion coextensive therewith, means to maintain said first and second rollers, in rolling contact, coextensively, said rollers being of the same diameter, means to connect said rollers for rotation about their axes in opposite directions at the same rate of rotation, with the printing plate portion of the first roller contacting the blanket portion of the second roller and the ink roller portion of the first roller contacting the printing plate portion of the second roller, and a third roller comprising an outer blanket all around and being coextEnsive with said second roller and of a diameter half the diameter of the first or second rollers, means to connect said third roller for rotation about its axis, two revolutions for each revolution of the first or second rollers, in contact with said second roller, whereby ink from the inking means will ink the ink roller portion of the first roller during the first half revolution of said first roller, and will ink the printing plate portion of the first roller during the second half revolution of the first roller, and the inked ink roller portion of the 1st second roller during the will ink the printing plate portion of the second roller during the second half revolution of the first roller, and the printing plate portion of the first roller will impress the blanket portion of said the next half revolution of the first roller, and the printing plate portion of the second roller will impress the blanket of the third roller during said next half revolution of said first roller, during which time said third roller makes a full revolution, and whereby said blanket portion of said second roller and said blanket of said third roller may print opposite sides of a sheet passing between said second and third rollers during a following half revolution of said first roller, during which time the third roller makes another complete revolution.
Claim 2
Dependent Claim
369 words
A printing press comprising inking means, a first roller positioned to receive ink from said inking means, said roller having a part cylindrical printing plate portion and a part cylindrical coextensive ink roller portion, a second roller having a part cylindrical printing plate portion and a part cylindrical blanket portion coextensive therewith, means to maintain said first and second rollers, in rolling contact, coextensively, said rollers being of the same diameter, means to connect said rollers for rotation about their axes in opposite directions at the same rate of rotation, with the printing plate portion of the first roller contacting the blanket portion of the second roller and the ink roller portion of the first roller contacting the printing plate portion of the second roller, and a third roller comprising an outer blanket all around and being coextEnsive with said second roller and of a diameter half the diameter of the first or second rollers, means to connect said third roller for rotation about its axis, two revolutions for each revolution of the first or second rollers, in contact with said second roller, whereby ink from the inking means will ink the ink roller portion of the first roller during the first half revolution of said first roller, and will ink the printing plate portion of the first roller during the second half revolution of the first roller, and the inked ink roller portion of the 1st second roller during the will ink the printing plate portion of the second roller during the second half revolution of the first roller, and the printing plate portion of the first roller will impress the blanket portion of said the next half revolution of the first roller, and the printing plate portion of the second roller will impress the blanket of the third roller during said next half revolution of said first roller, during which time said third roller makes a full revolution, and whereby said blanket portion of said second roller and said blanket of said third roller may print opposite sides of a sheet passing between said second and third rollers during a following half revolution of said first roller, during which time the third roller makes another complete revolution.
Claim 3
Dependent Claim
19 words
The combination of claim 1, and means to rotate the second roller about the axis of the first roller.
Claim 4
Dependent Claim
20 words
The combination of claim 1, and means to adjust the distance between the axes of said first and second rollers.
Claim 5
Dependent Claim
39 words
The combination of claim 1, means to move the second roller in one direction, about the axis of the first roller and means to move the second roller in an opposite direction about the axis of the first roller.
Claim 6
Dependent Claim
19 words
The combination of claim 4, and means to limit movement of the second roller in one of said directions.
Claim 7
Dependent Claim
33 words
The combination of claim 1, means to rotate the second roller about the axis of the first roller, and means to vary the distance between the axes of said first and second rollers.
Claim 8
Dependent Claim
66 words
The combination of claim 1, said ink roller portion of the first roller comprising an outer layer of rubber, said outer layer having a cut-out terminating short of the ends of said layer, and said printing plate portion of the first roller being recessed into said cut-out and fixed to the first roller, said cut-out and printing plate terminating short of the ends of the roller.
Claim 9
Dependent Claim
52 words
The combination of claim 7, the blanket portion of said second roller comprising an outer rubber layer terminating short of the ends of said layer and having a cut-out, and said printing plate being recessed into said cut-out in the blanket portion of said second roller and fixed to said second roller.
Claim 10
Dependent Claim
17 words
The combination of claim 8, said blanket of said third roller comprising an outer layer of rubber.
Claim 11
Dependent Claim
37 words
The combination of claim 9, said outer layer of said third roller having annular grooves spaced from the ends of said outer layer and located at the ends of the printing plate portion of said second roller.
Claim 12
Dependent Claim
22 words
The combination of claim 1, each of said printing plate portions of said first and second rollers being 180* in circumferential extent.
Claim 13
Dependent Claim
34 words
The combination of claim 1, electro-magnetic means to move said second roller toward said third roller, and means controlled by a sheet passing between said second and third rollers, to control said electro-magnetic means.
References Cited (Backward Citations)
US2539383A
Cited
US2911907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |