Apparatus for sorting objects by conductivity or resistivity

Details Apparatus for sorting objects by conductivity or resistivity Apparatus for sorting objects by conductivity or resistivity

1974-10-24

1976-03-16

Reeves, Robert B.

Classifying, separating, and assorting solids

Adhesion

Coated surface or mass

209 81R, B07C 5344

Patent

active

039440761

ABSTRACT:
The invention concerns sorting apparatus comprising an electrically conductive member the location of which is at least substantially fixed; a horizontally disposed rotary plate adapted to support objects to be sorted and to carry them, while so supported, past the electrically conductive member, at least a portion of the plate being electrically conductive; means for feeding the objects to a region of said plate which is spaced from the axis thereof; guide baffles for guiding the objects from said region to said electrically conductive member, the electrically conductive member being disposed adjacent said plate; control circuit responsive to the electrical conductivity or resistivity of the objects; the electrically conductive member, the said electrically conductive portion, and the control circuit being connected in a normally open electrical circuit which is adapted to be completed by an object on the said electrically conductive portion as it passes the electrically conductive member; and a sorting device, controlled by said control circuit, for effecting a relative separation between those objects which have, and those which fail to have, a predetermined electrical conductivity.

REFERENCES:
patent: 2101381 (1937-12-01), Appleyard
patent: 2131930 (1938-10-01), Appleyard
patent: 2587158 (1952-02-01), Hofberg
patent: 3587849 (1971-06-01), Dwyer

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