Printing – Rolling contact machines – Rotary
Patent
1999-09-24
2000-07-18
Hilten, John S.
Printing
Rolling contact machines
Rotary
101419, 101408, 271204, B65H 2904
Patent
active
060891580
ABSTRACT:
A chain delivery assembly for withdrawing sheets from a rotating cylinder of a sheet-fed offset printing press includes first and second spaced apart sprockets independently mounted for rotation about a common axis which is parallel to the axis of the rotating cylinder, first and second gears being coaxially affixed adjacent to the first and second sprockets, respectively. A pair of chains, carried by the sprockets, have grippers for engaging leading edges of sheets to carry them away from the cylinder. A rotatable shaft, mounted away from the chains and whose axis is parallel to the axis of the rotating cylinder has third and fourth gears affixed to opposite ends thereof. The first gear is operatively connected to the third gear for rotation of the rotatable shaft and the fourth gear. The fourth gear is operatively connected to the second gear to drive the second sprocket in coordinated rotation with the first sprocket.
REFERENCES:
patent: 2747870 (1956-05-01), Backhouse
patent: 4085930 (1978-04-01), Weisgerber et al.
patent: 4643414 (1987-02-01), Weisgerber
patent: 4766810 (1988-08-01), Alt
patent: 5088404 (1992-02-01), MacConnell et al.
patent: 5431386 (1995-07-01), Blaser
Berryhill Bill B.
Colilla Daniel J.
Hilten John S.
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