Universal half folder apparatus

Details Universal half folder apparatus Universal half folder apparatus

1996-08-01

1999-03-02

Hail, III, Joseph J.

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

493451, 493395, B42C 100

Patent

active

058763201

ABSTRACT:
A continuous sheet folder apparatus is disclosed that can fold any size paper in half with nested inserts inside the paper. The apparatus can also function in an intermittent mode. The half folding apparatus is accomplished by a set of lifting fingers and stationary fingers which interact to curl the sheet leading edge upwards and over until it registers with the trailing edge, passing beneath it. The sheet is then creased in a presser unit. The lifting fingers are spring mounted and biased toward the oncoming sheet.

REFERENCES:
patent: 2815946 (1957-12-01), Cran
patent: 2861801 (1958-11-01), Cran
patent: 3285144 (1966-11-01), Frei
patent: 3517919 (1970-06-01), Flygare
patent: 4875668 (1989-10-01), Spyra
patent: 5251425 (1993-10-01), Kern

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