Automatic sheet decurler

Details Automatic sheet decurler Automatic sheet decurler

1976-02-13

1977-11-29

Blunk, Evon C.

Sheet feeding or delivering

Delivering

With transfer means between conveyor and receiver

72 54, 72160, 271188, 271195, 271204, B65H 2970, B65H 2904

Patent

active

040602362

ABSTRACT:
A method and apparatus for continuously bending or creasing sheet material as the material travels along a path. The invention creases and decurls the material; that is, compensates for a natural tendency to curl in the opposite direction, and serves as a drag on the trailing portion of the sheet material, thereby providing positive sheet control. It is characterized by an air pressure gradient which forces the material into a zone between a pair of parallel, spaced, elongated support surfaces as the material is drawn over the support surfaces.

REFERENCES:
patent: 1709096 (1929-04-01), Reinhold
patent: 2106199 (1938-01-01), Wormser
patent: 2474997 (1949-07-01), Wormser
patent: 2881000 (1959-04-01), Kephart
patent: 3076492 (1963-02-01), Monks
patent: 3212775 (1965-10-01), Taylor
patent: 3451670 (1969-06-01), Staines

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