Rotary printing press with a bumping mechanism

US4301728A · kind A · utility

Assignee

• American Newspaper Publishers Association · US

Inventors

• Erwin Jaffe · Easton, US
• Harshad D. Matalia · Easton, US
• William D. Rinehart · Easton, US
• Frederick L. Warner · Easton, US
• Menashe Navi · Elizabeth, US
• George Merker · Fair Lawn, US

Key dates

• Filing date: Feb 11, 1980
• Grant date: Nov 24, 1981
• Expiry date: Feb 11, 2000

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F13/28
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Rotary printing presses of the type embodying rotatably driven series of inking cylinder, plate cylinder and impression cylinder components. Particularly, a mechanism for "bumping" the impression cylinder shaft with respect to the plate cylinder for press adjustment or repair and web adjustment without dismantling of the press. The "bumping" mechanism includes eccentric bushing plates supporting the impression cylinder shaft at either end and a pivotally mounted bell crank with a follower strut pivotally secured to the bushing plate. As the bell crank is pivoted, the impression cylinder shaft is "bumped" or displaced with respect to the plate cylinder.