Method and apparatus for grading articles

Details Method and apparatus for grading articles Method and apparatus for grading articles

1977-08-29

1978-10-31

Knowles, Allen N.

Classifying, separating, and assorting solids

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

Signalling, indicating, or display means

209705, B07C 700

Patent

active

041229533

ABSTRACT:
A method of associating one of at least two grades with each of a plurality of articles which are to be fed in succession along a path, comprises feeding one grade of article into the path at a first feed station, for movement along the path, feeding a second grade of article into the path at a second feed station arranged upstream of the first feed station, so that only grades of article other than the one grade travel along the path from the second feed station to the first feed station but after the first feed station all grades of article travel along the path, arranging a first sensor between the first feed station and the second feed station, the first sensor being arranged to emit a signal each time an article passes the first sensor and having means to associate each signal with the article which generates the signal, and utilizing the signals to associate grades with the articles.

REFERENCES:
patent: 4021336 (1977-05-01), Brook

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