Plate clamping device of web-fed rotary printing press

Details Plate clamping device of web-fed rotary printing press Plate clamping device of web-fed rotary printing press

1984-06-11

1985-01-29

Burr, Edgar S.

Printing

Flexible-sheet-securing devices

B41F 2712

Patent

active

044958650

ABSTRACT:
In a plate clamping device of a web-fed rotary printing press, a plate cylinder is provided with a longitudinal slot having a narrow opening opened on the peripheral surface of the plate cylinder, a semicircular bottom surface and oppositely inclined surfaces interconnecting side walls of the opening and opposite ends of the semicircular bottom surface. A plate clamping shaft having a flat surface and a slit is loosely inserted in the slot. After inserting one bent end of a printing plate wrapped about the plate cylinder between one inclined surface and the flat surface of the plate clamping shaft and the other bent end into the slit the plate clamping shaft is rotated to tightly fasten the printing plate. Reverse rotation of the plate clamping shaft is prevented by releasable pawls. With this plate clamping device it is possible to tightly fasten the printing plate regardless of its thickness.

REFERENCES:
patent: 1217524 (1917-02-01), Story
patent: 3382799 (1968-05-01), Westerly
patent: 3727551 (1973-04-01), Kostas et al.
patent: 4104968 (1978-08-01), Schwaab et al.

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