Gap control apparatus for fold roller

Details Gap control apparatus for fold roller Gap control apparatus for fold roller

1991-10-11

1993-03-02

Kisliuk, Bruce M.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493442, B65H 4514

Patent

active

051905140

ABSTRACT:
A paper folder has folding rollers spring urged against the complementary rollers so the rollers touch at the nip when no paper is present. A light spring allows the rollers to open when a piece of paper is to be received therebetween; but, the light spring completely closes after a short movement to limit the gap between the rollers. A heavy spring allows further spacing of the rollers under great force. The resulting folder will fold a range of thicknesses of paper, and including groups of several sheets of paper, without adjustment of the rollers.

REFERENCES:
patent: 3021134 (1962-02-01), Appell
patent: 4225128 (1980-09-01), Holyoke
patent: 4496339 (1985-01-01), Moll

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