Printing machine pulling roller pair

Details Printing machine pulling roller pair Printing machine pulling roller pair

1986-12-15

1988-06-07

Burr, Edgar S.

Printing

Rolling contact machines

Rotary

101219, 101216, B41F 1302

Patent

active

047489103

ABSTRACT:
To exert tension on a moving web, typically a paper web pulled over a folding former of a printing machine, the pull-off rollers are formed with axial grooves which are filled with strips of elastic material, such as plastic or rubber; preferably, the width of the ribs, which can be steel, is slightly less than the circumferential width of the elastic insert strips to provide for slight pinching of engagement surfaces between the ribs (9) and the elastic insert strips (10)--see FIG. 2. The strips and ribs extend over the entire axial length of the rollers to provide an axially uniform tension over the entire width of the web material.

REFERENCES:
patent: 486631 (1892-11-01), Crossley
patent: 2219077 (1940-10-01), Pharo
patent: 2434820 (1948-01-01), Tifft
patent: 3022231 (1962-02-01), Bloderick
patent: 3060545 (1962-10-01), Thiel
patent: 4291438 (1981-09-01), Seiki

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