Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Patent
1976-07-12
1980-12-30
Rolla, Joseph J.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Condition responsive means controls separating means
209908, 250223R, 356407, B07C 5342
Patent
active
042418356
ABSTRACT:
A sorting apparatus wherein a plurality of first and second electrical color signals from a predetermined number of viewer elements is utilized to generate classification signals functionally related to the ratio of the color signals from each viewer and an ejector associated with each viewer is actuated if a comparison of each ratio classification signal with predetermined references indicates an unacceptably colored product or foreign object is characterized by a foreign object ejector arrangement being operable if the ratio classification signal falls within a predetermined defined range of signal values. A threshold network actuates the foreign object ejector arrangement only if an article is detected within the field of view of the viewer elements. Circuitry to present a substitute classification signal within the predetermined range of signal values if the electrical color signals are of equal value is provided. Also, a power supply associated with the sorting apparatus is characterized by a capacitive switching arrangement producing positive and negative polarity voltage outputs of a predetermined magnitude from a positive voltage source without the need for transformers or inductors. A non-reflective background region against which light energy reflected from the articles to be sorted is detected is provided.
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Geosource Inc.
Rolla Joseph J.
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