Method and device for distinguishing between field crops, partic

Details Method and device for distinguishing between field crops, partic Method and device for distinguishing between field crops, partic

1981-09-11

1984-08-21

Reeves, Robert B.

Classifying, separating, and assorting solids

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

Condition responsive means controls separating means

209570, 209599, B07C 534

Patent

active

044665431

ABSTRACT:
A method and apparatus for distinguishing and separating both stones and soil clods from field crops, in which a sensor (5) is simultaneously responsive to both impact and influence on a sensor-generated magnetic field and generates output signals characteristic of field crops, stones and clods. The output signals are fed to electronic circuitry (12) that distinguishes output signals produced by mechanical impact of stones and those produced by passage of clods through the magnetic field from signals generated by crops. An ejector cylinder (15) and ejector (16) separates stones and clods from crops upon receipt of a signal from the electronic circuitry.

REFERENCES:
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patent: 3127016 (1964-03-01), Baigent
patent: 3268073 (1966-08-01), Lehde et al.
patent: 3429437 (1969-02-01), Terschanski et al.
patent: 3559805 (1971-02-01), Cragg
patent: 3701419 (1972-10-01), Hutter et al.
patent: 3788466 (1974-01-01), Wilson et al.
patent: 4212398 (1980-07-01), Parker et al.
patent: 4311241 (1982-01-01), Lacy, Jr. et al.
Technical Paper "Potato Harvesting and Transport", by D. C. McRae.

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