Printing plate clamping assembly

Details Printing plate clamping assembly Printing plate clamping assembly

1975-12-12

1977-07-19

Kinsey, Russell R.

Printing

Flexible-sheet-securing devices

101383, B41F 2712

Patent

active

040361330

ABSTRACT:
Clamping apparatus is provided for clamping thin flexible printing plates in position on a press cylinder. A continuously spring biased rigid clamping member is engageable with a bent over portion of the trailing edge of the printing plate to clamp the same against the circumference of a printing press cylinder. In order to accommodate loading and unloading of printing plates on the clamping member, retaining straps are attached to the clamping member, which retaining straps are engageable with a release bar detent to lock the straps and clamping bar in a non-clamping position against the force of the clamping springs. The release bar is continuously spring biased to a locking position so that whenever the clamping bar is moved to the non-clamping position, the same is locked in said position. The release bar includes a manually operable push-button end portion for accommodating release of the release bar from the straps, whereby automatic movement of the clamping bar via the clamping springs to a clamping position is effected.

REFERENCES:
patent: 960218 (1910-05-01), Droitcour
patent: 2123997 (1938-07-01), Jirousek
patent: 2697397 (1954-12-01), Bailey
patent: 2916990 (1959-12-01), Du Bois
patent: 3110255 (1963-11-01), Jeschke et al.
patent: 3533355 (1970-10-01), Wall
patent: 3696744 (1972-10-01), Etchell
patent: 3791295 (1974-02-01), Albright
patent: 3892179 (1975-07-01), Jahn
patent: 3896729 (1975-07-01), Moyer
patent: 3946670 (1976-03-01), Cerny

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