Automatic paper folder

专利名称：Automatic paper folder发明人：Tadeusz Staniszewski申请号：US07/817078申请日：19920106公开号：US05147275A公开日：19920915

摘要：Apparatus for automatically folding one or more sheets of paper into threesubstantially equal sections for later insertion into a mailing envelope. Rollers are usedto introduce the sheet into a guide which guides the leading edge of the sheet backagainst an upstream line in the same sheet, where a first fold is to be made. Upon furtheroperation, the lead edge of the sheet forces the upstream line in the sheet into a nipbetween two rollers, which then seize, pass and fold the sheet along the upstream linewith the leading edge of the sheet still within the fold. Still further operation pulls theremaining loop and the remaining upstream portion of the sheet into the roller nip toform the desired second fold. The guide has a radially-inwardly biased input portionwhich, when the leading edge strikes the upstream portion of the sheet, moves radiallyoutward, and later returns inwardly under spring pressure to assist in urging the leadingedge of the sheet, and the upstream line in the sheet, into the folding roller nip.

申请人：HUNT HOLDINGS, INC.

代理机构：Synnestvedt & Lechner

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