SELECTIVE INSERTION MACHINE HAVING VERIFICATION AND OVERWEIGHT DIVERSION

摘要

A high speed feeder delivers a main document and a plurality of related subordinate documents onto an insertion track which carries the documents past a plurality of insertion and diversion stations. Each main document includes a coded representation of the number of related subordinate documents that are to follow thereafter. The coded representation is sensed as the main document is fed from the high speed feeder and signals are generated and delivered to a counter for representing a count corresponding to the number represented by the code. A photocell senses each subsequent subordinate document as it passes thereover and delivers a pulse corresponding to each such subordinate document to a second counter. The outputs of the two counters are compared and an error signal is generated if the two counts are not in agreement.