Sheet feeding or delivering – Delivering – With transfer means between conveyor and receiver
Patent
1989-10-25
1991-02-12
Schacher, Richard A.
Sheet feeding or delivering
Delivering
With transfer means between conveyor and receiver
271103, B65H 2968
Patent
active
049918320
ABSTRACT:
A delivery sheet brake for sheet-fed printing presses having a sucker formed with a suction opening movable on a closed loop path at varying speed corresponding in a sheet-transfer position to travel speed of a sheet and then being deceleratable until a sheet-release position is reached above a pile of sheets at a delivery, elements of a drive connected to the sucker for imparting a horizontal motion component to the sucker which is simultaneously movable vertically, and control valves for controlling vacuum in a suction line connected to the sucker, the sucker including a piston disposed in a cylinder of a housing so as to be movable in direction of a longitudinal axis of the piston, the housing being connected to the drive and being disposed swivelingly on a shaft having an axis extending transversely to a direction of travel of the sheet and parallel to the sheet, the piston being reciprocatingly movable in the cylinder of the housing by the vacuum in the suction line to the sucker and being controllable by contact of the sheet with the suction opening.
REFERENCES:
patent: Re25283 (1962-11-01), Ying Ling
patent: 2208978 (1940-07-01), Harrold et al.
patent: 3378256 (1968-04-01), Ellis
patent: 3702698 (1972-11-01), Schwebel
Filsinger Karl-Heinz
Hirth Roland
Spiegel Nikolaus
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Lerner Herbert L.
Schacher Richard A,.
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