Printing – Rolling contact machines – Rotary
Patent
1993-04-08
1994-08-16
Eickholt, Eugene H.
Printing
Rolling contact machines
Rotary
101220, 101139, 101177, 101180, 101182, 101247, B41F 702
Patent
active
053376641
ABSTRACT:
A printing press (32) with a pair of plate cylinders (12A, 12B) each having a cylindrical body (22A, 22B) and a central axis of rotation (20A, 20B) mounted in fixed parallel spaced relationship, a pair of blanket cylinders (14A, 14B) located adjacent the plate cylinders (12A, 12B) with each having a cylindrical body (30A, 30B) and a rotary axis (24A, 24B) parallel to the axes (20A, 20B) of the plate cylinders (12A, 12B), having a blanket cylinder throw off apparatus (26) mounting the blanket cylinders (14A, 14B) in an operative position in engagement with the pair of plate cylinders (12A, 12B), respectively, and with their rotary axes (24A, 24B) in lateral alignment with the axes of rotation (20A, 20B) of the plate cylinders to reduce vibration and a throw off position in which a throw off gap (39) exists between the pair of blanket cylinders (14A, 14B) and a pair of gaps (403, 43B) exist between the pair of plate cylinders (12A, 12B), respectively. A linkage assembly, including a pivotal linkage (52) connected between a relatively fixed location (56) and the rotary axes (24A, 24B) of the blanket cylinders (14A, 14B) through eccentric members (45A, 45B) automatically separates the blanket cylinders (14A, 14B) from each other to create the throw off gap (39) in response to the blanket cylinders being pivoted to the throw off position.
REFERENCES:
patent: 3633503 (1972-01-01), Tafel
patent: 4122772 (1978-10-01), Dahlgren
patent: 4218972 (1980-08-01), Fujishiro
patent: 4240346 (1980-12-01), Landis
patent: 4369705 (1983-01-01), Gelinas
patent: 4442773 (1984-04-01), Kobayashi
patent: 4458590 (1984-07-01), Egnaczak
patent: 4458591 (1984-07-01), Guaraldi
patent: 4875936 (1989-10-01), Hermach
patent: 5161463 (1992-11-01), Knauer et al.
Eickholt Eugene H.
Hamann H. F.
Patti C. B.
Rockwell International Corporation
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