Printing – Processes
Patent
1996-07-29
1998-04-21
Burr, Edgar S.
Printing
Processes
101240, B41F 1364
Patent
active
057407401
ABSTRACT:
Method for braking sheets in a delivery of a sheet-fed rotary printing press wherein the sheets are disposed in tandem and are successively fed to a sheet-pile position in translatory travel direction, the sheets being in an overlapping shingled arrangement in a vicinity of a sheet brake, an air-blast jet being applied beneath and parallel to the respective sheets, includes feeding the sheet to the sheet brake by means of gripper closure and a flotation-guiding arrangement, forming with the air-blast jet a carrying-air flow for producing the flotation-guiding arrangement and for simultaneously separating the sheets from an instant at which the sheets are being formed into the overlapping shingled arrangement, the carrying-air flow formed beneath an oncoming sheet continuing in the vicinity of the overlapping shingled arrangement of the sheets for forming an elongation of the flotation-guiding arrangement towards the delivery; and a device for performing the method.
REFERENCES:
patent: 3975012 (1976-08-01), Matthews
patent: 4085930 (1978-04-01), Weisgerber et al.
patent: 5263415 (1993-11-01), Pollich
patent: 5497987 (1996-03-01), Henn et al.
Burr Edgar S.
Ghatt Dave A.
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Lerner Herbert L.
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