Sheet-fed rotary printing press with a plurality of printing uni

Details Sheet-fed rotary printing press with a plurality of printing uni Sheet-fed rotary printing press with a plurality of printing uni

1990-04-09

1991-12-31

Fisher, J. Reed

Printing

Multicolor

Rotary machines

101230, B41F 112, B41F 120, B41F 130

Patent

active

050761641

ABSTRACT:
Sheet-fed rotary printing press with a plurality of printing units convertible from single-page printing to first form and perfector printing and the reverse and a turning device disposed between two of the printing units, the turning device including a turning drum wherein a rotatable control shaft for effecting a gripper changeover is mounted, and a device for resetting the printing units including a gearwheel pair disposed in a chain of drive gearwheels and including a fixed gearwheel on the turning drum and, concentric therewith, an adjustable gearwheel adjustable in rotational angle, the fixed and adjustable gearwheels being clampable together, comprising means disposed on the adjustable gearwheel and actuable, within a predetermined angular range of relative movement between the adjustable gearwheel and the fixed gearwheel, on members for rotating the control shaft for effecting the gripper changeover.

REFERENCES:
patent: 4120244 (1978-10-01), Wirz
patent: 4147105 (1979-03-01), Becker
patent: 4782717 (1988-11-01), Becker

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