DISTRIBUTOR SYSTEM FOR LETTER DISPATCHING

摘要

In a mail sorting system in which mail items are routed from a number of distributing stations to appropriate, essentially parallel conveying channels, the stations being spaced along the channels and each item being fed to a selected channel on the basis of its destination address, overloading of a channel is indicated by providing an electrical simulation of the distribution at each moment of items along each channel, the simulation being in response to routing signals from the stations, and by producing an alarm signal when the simulation shows that more than a predetermined number of items are present in a selected length of any one channel upstream of its junction with at least the last station, taken in the direction of conveyance along the channels.