Representative sampling device

Details Representative sampling device Representative sampling device

1976-02-06

1977-07-26

Queisser, Richard C.

Measuring and testing

Measuring vessel

209137, G01N 102

Patent

active

040374742

ABSTRACT:
A hopper into which loosened pieces of the paper collection are fed. A conveyor for transporting the loosened pieces of paper to a higher elevation. A fan for generating a stream of air to blow through the pieces of paper as they leave the conveyor at the higher elevation. A chamber into which the pieces of paper are gently floated by the stream of air generated by the fan. A vertical tube through which the pieces of paper can flutter downwardly due to the force of gravity. A divider separating the bottom of the vertical tube into a number of parts so that the pieces of paper which flutter down the tube can be separated into desired proportions.

REFERENCES:
patent: 33634 (1861-11-01), Bruckshaw et al.
patent: 3738483 (1973-06-01), MacKenzie

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