Patent US3892178A successfully refreshed from Google Patents.
US3892178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary printing machine
Assignee: Automatic Druckmaschinenfabrik Dr WH Hinniger und Söhne
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Filing: 1973-06-25
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Granted: 1975-07-01
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Expires: 1993-06-25
Abstract
Abstract A plurality of printing units are arranged one above the other, each including the plate cylinder, inking mechanism, and the blanket or transfer cylinder. The units are mounted in a stand structurally separated from the main frame of the machine while the associated impression cylinders are mounted in the main frame. The stand is shiftable on a bed frame with respect to the main frame so that, in printing position, the stand is assembled with the main frame and the blanket cylinder of each printing unit can cooperate with the associated impression cylinder. The stand can be shifted on the bed frame away from the main frame to provide an interspace for an operator to have direct access to the impression cylinders, especially for introducing the web. The synchronized drive of the printing units during this operation is provided by long driving shafts preferably provided with singletooth clutches and following the shifting movement of the stand as well as of the printing units which, in addition, are partly withdrawable from the stand. The construction permits a very rapid adjustment of the press and an easy checking of all of the mechanisms while at the same time assuring continuous running of the cylinders in an accurate positional synchronism.
Inventors
- 👤 Otto Staamann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:34
CPC Classifications
B; B41; B41F; B41F13/00; B41F13/0024; B41F13/08; B41F13/24; B41F13/26; B41F13/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
289 words
In an offset rotary printing machine, for printing a continuous web, including a bed frame and a main frame, and having printing units, each including a plate cylinder, a blanket cylinder and an inking mechanism, with the printing units being arranged one above the other in a printing unit support stand and respective impression cylinders associated with the blanket cylinders and mounted one above the other in the main frame of the machine, each at the level of the associated blanket cylinder, and with the printing units and the impression cylindeRs all driven from a main drive: the improvement comprising, in combination, guide rails mounting said stand on said bed frame for shifting, with said printing units, away from said impression cylinders to provide a man-size space between said printing units and said impression cylinders for ready access of an operator thereto; means operable to shift said stand along said guides; a respective drive shaft connecting each printing unit to the associated impression cylinder, each drive shaft being splined and mounted on the associated printing unit against axial displacement relative thereto; a respective single tooth clutch drivingly connecting each drive shaft to the associated printing unit; each splined drive shaft being slidably engaged through a respective splined gear member mounted on said main frame and driven by said main drive; each printing unit being displaceable, on said support stand, to an inoperative position; and respective back stops limiting displacement of each printing unit on said support stand; each drive shaft, when said support stand is shifted to provide such man-size space and the associated printing unit is further displaced into engagement with the respective back stop, remaining drivingly connected to the associated splined gear member on said main frame.
Claim 2
Dependent Claim
289 words
In an offset rotary printing machine, for printing a continuous web, including a bed frame and a main frame, and having printing units, each including a plate cylinder, a blanket cylinder and an inking mechanism, with the printing units being arranged one above the other in a printing unit support stand and respective impression cylinders associated with the blanket cylinders and mounted one above the other in the main frame of the machine, each at the level of the associated blanket cylinder, and with the printing units and the impression cylindeRs all driven from a main drive: the improvement comprising, in combination, guide rails mounting said stand on said bed frame for shifting, with said printing units, away from said impression cylinders to provide a man-size space between said printing units and said impression cylinders for ready access of an operator thereto; means operable to shift said stand along said guides; a respective drive shaft connecting each printing unit to the associated impression cylinder, each drive shaft being splined and mounted on the associated printing unit against axial displacement relative thereto; a respective single tooth clutch drivingly connecting each drive shaft to the associated printing unit; each splined drive shaft being slidably engaged through a respective splined gear member mounted on said main frame and driven by said main drive; each printing unit being displaceable, on said support stand, to an inoperative position; and respective back stops limiting displacement of each printing unit on said support stand; each drive shaft, when said support stand is shifted to provide such man-size space and the associated printing unit is further displaced into engagement with the respective back stop, remaining drivingly connected to the associated splined gear member on said main frame.
Claim 3
Dependent Claim
52 words
In a rotary printing machine, the improvement claimed in claim 1, in which said shifting means comprises a hydraulic actuator connected between said bed frame and said stand; said guides comprising elongated races of prismatic cross section on said bed frame and on said stand, and anti-friction bearings engaged in said races.
Claim 4
Dependent Claim
56 words
In a rotary printing machine, the improvement claimed in claim 1, in which said stand has respective openings mounting said printing units; and respective sets of elongated races on said stand and said printing units at each opening and having anti-friction bearings engaged therein, constituting guides for displacement of each printing unit relative to said stand.
Claim 5
Dependent Claim
82 words
In a rotary printing machine, the improvement claimed in claim 1, including controls for said shifting means; said controls including a first pushbotton on said main frame operable to activate said shifting means to shift said stand away from said main frame; said controls further including a pair of second pushbuttons, one on said main frame and the other on said stand; said second pushbuttons, when operated simultaneously, activating said shifting means to shift said stand into engagement with said main frame.
Claim 6
Dependent Claim
39 words
In a rotary printing machine, the improvement claimed in claim 1, including hydraulically actuated locking devices operable to lock said stand to said main frame; and a control pushbutton on said main frame operable to activate said locking devices.
Claim 7
Dependent Claim
47 words
In a rotary printing machine, the improvement claimed in claim 1, including respective hydraulic locking devices operable to lock each printing unit to said frame; and respective control pushbuttons on said stand in operative association with each printing unit and operable to actuate said hydraulic locking devices.
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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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |