Automatic paper folder

Details Automatic paper folder Automatic paper folder

1992-01-06

1992-09-15

Kisliuk, Bruce M.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493419, B65H 4504

Patent

active

051472759

ABSTRACT:
Apparatus for automatically folding one or more sheets of paper into three substantially equal sections for later insertion into a mailing envelope. Rollers are used to introduce the sheet into a guide which guides the leading edge of the sheet back against an upstream line in the same sheet, where a first fold is to be made. Upon further operation, the lead edge of the sheet forces the upstream line in the sheet into a nip between two rollers, which then seize, pass and fold the sheet along the upstream line with the leading edge of the sheet still within the fold. Still further operation pulls the remaining loop and the remaining upstream portion of the sheet into the roller nip to form the desired second fold. The guide has a radially-inwardly biased input portion which, when the leading edge strikes the upstream portion of the sheet, moves radially outward, and later returns inwardly under spring pressure to assist in urging the leading edge of the sheet, and the upstream line in the sheet, into the folding roller nip.

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patent: 4917662 (1990-04-01), Gombault

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