Schriftstueckzufuehreinrichtung

摘要

1,180,031. Feeding sheets. INTERNATIONAL COMPUTERS Ltd. 27 Dec., 1967 [6 Jan., 1967], No. 908/67. Heading B8R. Documents 1 of various size are fed from the bottom of a stack by a suction drum 4, a document being fed when suction is applied, and thereafter being forwarded by a roller 7 to a conveyer 10, 11. Double feed is prevented by an adjustable plate 3 and reverse rollers 14 engaging grooves in the drum. The vertical position of the rollers 14 controls the slip between the document and the drum and thus the time when the leading edge of the documents passes a photo-cell 13. A signal representing the time and a series of pulses representing the desired timing are passed to a counter which derives the delay or prematurity of each document, whereby lamps indicate by their intensity a weighted average of the number of documents in various time increments. The rollers are adjusted manually or automatically until it is indicated that most documents are in the desired time range.