Chief folding machine with eye adhesive moistener

摘要

A device for folding successively fed sheets which have a plurality of transversely spaced dried adhesive areas thereon includes a plurality of folding rolls arranged in a sheet feedback between which the sheets are fed and which have at least one pocket into which the sheets are fed after they have been folded at least once as they are passed between folding rolls. The sheet wetting device comprises a plurality of moveable belts which are arranged over the sheets as they are fed through the sheet feed path, they are guided and moved through a path in which they overlie each sheet in succession. Construction includes means for holding at least some of the belts into contact with the sheets as they are moved in order to wet the sheets in selected areas in it includes means for passing the belts into association with a belt wetting device or reservoir so that they wet the dry areas which they contact. The construction advantageously includes means for shifting at least some of the belts into contact with the sheets only at selected areas in which the belts are moved into association with the sheets. Arrangement for shifting the sheets or the belts so that they move into contact with each other only in selected areas includes a electro-magnetically operated device to move these elements relatively.