Plate cylinder with semi-automatic plate lock up

Details Plate cylinder with semi-automatic plate lock up Plate cylinder with semi-automatic plate lock up

1993-02-24

1994-02-08

Eickholt, Eugene H.

Printing

Flexible-sheet-securing devices

B41F 128

Patent

active

052840930

ABSTRACT:
A rotatable plate cylinder (10) for supporting a printing plate (150) has an open passage (34) and a locking member (26) supported for movement in the passage (34). The locking member (26) is movable inward of the passage (34) to a closed position, and is movable outward of the passage (34) to an open position. The locking member (26) is subjected to a first centrifugal force which urges it to move outward from the closed position toward the open position when the plate cylinder (10) rotates. A balance member (28) is subjected to a second centrifugal force when the plate cylinder (10) rotates. Connecting pins (100) direct the second centrifugal force against the locking member (26) oppositely to the first centrifugal force.

REFERENCES:
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patent: 4938135 (1990-07-01), Wieland
patent: 5010818 (1991-04-01), Wallschlaeger

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