Pressure control device for offset printing machine

Details Pressure control device for offset printing machine Pressure control device for offset printing machine

1975-03-28

1976-06-29

Fisher, J. Reed

Printing

Rolling contact machines

Rotary

B41F 706, B41F 1328

Patent

active

039658180

ABSTRACT:
A pressure control device for offset printing machines, having a cam shaft mounted between a pair of side plates, a dial provided at one end of the shaft, cam plates rotating with the dial in a single body having spiral cam slot surfaces. The cam slots are engaged with pins mounted on two arms supporting a pressure cylinder, and have one end formed to latch the pin in an escape position. With the above device, even during the operation of a printing machine, the pressure of the pressure cylinder to printing paper can be adjusted simply by the dial control, and an automatic adjustment can further be possible when the dial is set at AUTO position and the pins are in the escape positions.

REFERENCES:
patent: 1979195 (1934-10-01), Govare et al.
patent: 2220255 (1940-11-01), Marchev et al.
patent: 2860577 (1958-11-01), Fowlie
patent: 3431843 (1969-03-01), Kaneko et al.
patent: 3601045 (1971-08-01), Schinke

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