Patent ID: 7401777

Claim:
An apparatus for supplying a shingled or overlapping sheet stream from a stack of sheets of a sheet feeder to a feed table of a sheet-processing machine with a belt table, which is provided with at least one revolvingly driven suction belt in operative connection with at least two suction chambers, which can be acted upon by a supply of negative pressure, said apparatus including a front guide stop and a device for detecting a last sheet in the sheet stream, wherein the at least one revolvingly driven suction belt is adapted to stop operating after the last sheet of the sheet stream is detected by the device for detecting and the front edge of the last sheet has been placed against the front guide stop, and wherein one of the at least two suction chambers is a lower suction chamber that faces the front guide stop and is connected with the suction belt, the lower suction chamber adapted to be adjustably vented to interrupt the supply of negative pressure to said lower suction chamber within a working cycle leading the last sheet to the front guide stop.