Abstract: This disclosure is directed to a conveying system for transporting documents from the delivery end of one conveyor section to the spaced apart entry end of a receiving conveyor section in a manner wherein the document is stiffened by imparting undulating or corrugated folds therein as it is conveyed so as to facilitate the transfer of the document from one conveyor to the next and thereby permitting at least one or both sides of the document to be checked or read as it is being conveyed from one station to the next at the point of transfer.

Abstract: The device is of the type having a stacking drum with openings in its cylindrical periphery by means of which the articles to be conveyed can be adhered by suction to the drum and accumulated in an orderly stack, with the suction air being effective only within a predetermined circumferential range of the stacking drum. The stacking drum is so arranged in the conveying system that the articles to be conveyed are fed tangentially to the drum, and the stacking drum has only a single row of openings in its circumference, with the row extending parallel to the axis of the drum. The openings may be selectively connected either to vacuum or to a source of air under pressure so that, with suction being effective in the openings, the articles are grasped by the stacking drum at the leading edge, discharged around the stacking drum and fed to the stack while, with compressed air being supplied to the openings, the articles pass by the stacking drum and move on to a following conveying system.