Sorting machine

Details Sorting machine Sorting machine

1984-11-30

1987-10-13

Reese, Randolph A.

Classifying, separating, and assorting solids

Sorting special items, and certain methods and apparatus for...

Condition responsive means controls separating means

209586, 209587, 250226, 356425, B07C 5342

Patent

active

046992731

ABSTRACT:
A sorting machine is disclosed for sorting objects by examining light from the objects in at least two different parts of the spectrum. The objects to be sorted are fed to a viewing zone where they are illuminated in at least two different parts of the spectrum. The objects passing through the viewing zone are viewed against at least one background which is illuminated by at least first and second lighting units which are separate from the lighting employed to illuminate the viewing zone, the first and second lighting units being respectively arranged to cause the respective background to emit light in the at least two different parts of the spectrum. A discriminator is employed for determining whether objects which have been so viewed are desired, and there is an object separator controlled by the discriminator, for effecting relative separation between desired and undesired objects.

REFERENCES:
patent: 2645343 (1953-07-01), Nemir
patent: 3910701 (1975-10-01), Henderson et al.
patent: 4132314 (1979-01-01), von Beckmann et al.
patent: 4203522 (1980-05-01), Fraenkel et al.
patent: 4350442 (1982-09-01), Arild et al.
patent: 4513868 (1985-04-01), Culling et al.
patent: 4624368 (1986-11-01), Satake
patent: 4625871 (1986-12-01), Satake

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