Apparatus for obtaining a random sample

Conveyors: power-driven – Conveyor system for arranging or rearranging stream of items – By queueing items from quantity source of items into stream...

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1986902, B65G 4712

Patent

active

048118320

ABSTRACT:
Apparatus for obtaining a sample of objects is provided. The objects are carried by a first conveyor belt and are sampled by striking a lower surface of the conveyor belt to cause some of the objects to be thrown upwardly over a barrier into a receptacle. The objects from the receptacle are carried by a second conveyor which has cleats for separating and carrying objects to a detector one-by-one. The detector operates a deflecting plate to obtain a second sample for inspection. Objects which are not deflected by the plate are returned to the first conveyor belt, while those which are deflected enter a chute for collection. The apparatus for delivering an impact to the conveyor belt preferably comprises a bell crank which strikes the conveyor belt in response to a hydraulic actuator.

REFERENCES:
patent: 1590884 (1926-06-01), Bryant
patent: 3580385 (1971-05-01), Thompson
patent: 3712451 (1973-01-01), Vignon
patent: 3986604 (1976-10-01), Siryj
patent: 4198902 (1980-04-01), Worden

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