Printing – Rolling contact machines – Rotary
Patent
1987-06-22
1988-11-08
Fisher, J. Reed
Printing
Rolling contact machines
Rotary
B41F 1314
Patent
active
047827521
ABSTRACT:
A control device for circumferentially adjusting a plate cylinder of a printing press which is driven by a helical drive gear which drives a cooperating driven helical gear. The driven helical gear is rotatively coupled to one journal of the plate cylinder but is attached by lateral splines which permit lateral movement of the driven gear with respect to the journal and vice versa. Adjustment means are provided for laterally moving the driven helical gear with respect to the helical drive gear some distance either way from a coplaner relationship, thus changing the phase of the plate cylinder. Lateral adjustment of the plate cylinder is achieved by laterally adjusting the other journal of the plate cylinder during which adjustment the first journal moves laterally with respect to the driven gear due to the lateral spline attachment and does not effect the circumferential adjustment.
REFERENCES:
patent: 2234674 (1941-03-01), Jacobson
patent: 3505953 (1970-04-01), Germann
patent: 4137845 (1979-02-01), Jeschke
Fisher J. Reed
Pathfinder Graphic Associates Inc.
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