David A Field

US Patent:

48542342, Aug 8, 1989

Filed:

Apr 4, 1988

Appl. No.:

7/177060

Inventors:

David C. Emery - York ME
David G. Field - Dover NH
Derek C. Leck - Dover NH

Assignee:

Harris Graphics Corporation - Dover NH

International Classification:

B41F 3106

US Classification:

101364

Abstract:

An apparatus for closing an ink fountain on a printing press, the press having a fountain roll rotatable relative to a supply of ink and a flexible fountain blade adjacent thereto and spaced apart from the roll by a small gap. The size of the gap is controlled by a series of ink keys which move blade sections toward or away from the roll. When the press is to be shut down, the gap is closed by moving the blade against the roll in order to prevent ink leakage from the fountain. To do this, a bladder located adjacent the blade is inflated, forcing the entire length of the blade against the roll and thus closing the gap. The inflatable bladder operates independently of the ink keys, so that the keys need not be closed or adjusted when the press is shut down. When the press is restarted, the bladder deflates, allowing the blade to move away from the roll and to be controllable by the ink keys again.

US Patent:

58072276, Sep 15, 1998

Filed:

Aug 11, 1997

Appl. No.:

8/909160

Inventors:

David George Field - Dover NH

Assignee:

Heidelberg Harris Inc. - Dover NH
Heidelberger Druckmaschinen AG - Heidelberg

International Classification:

B65H 4512

US Classification:

493424

Abstract:

The present invention relates to a folder apparatus including a first cylinder for transporting a product and a folding cylinder rotatably engaged with the first cylinder at a nip. A product guiding device is assigned to a transition area between surfaces of the first cylinder and the folding cylinder, the guiding device having a smoothing element which includes different sections of product contacting elements being angled in opposite directions.