Envelope feeding system and speed control for mail sorting machi

Details Envelope feeding system and speed control for mail sorting machi Envelope feeding system and speed control for mail sorting machi

1984-11-15

1986-06-17

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding and delivering

Separator and conveyor

271 301, 271 311, 271153, B65H 102, B65H 312

Patent

active

045951888

ABSTRACT:
A speed control system for an envelope feeding mechanism used to feed envelopes to a pickoff device in a high speed mail sorting machine. The feeding mechanism includes a pair of toothed belts which convey the envelopes along an inclined surface. The side edges of the envelopes are received by a third toothed belt which is driven at an elevated position along a side panel. The belts are driven by a multiple speed electric motor controlled by electronic circuitry which automatically decrements or increments the motor speed if the envelopes are bunched together too tightly or too loosely. If the speed is decremented and the envelopes are still tightly bunched, the drive motor is stopped by a shutoff circuit which operates independently of the speed control circuit.

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patent: 4302000 (1981-11-01), Frank
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