Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Traveling item turned to predetermined position
Patent
1980-04-21
1982-09-28
Knowles, Allen N.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Traveling item turned to predetermined position
209557, 209585, 209586, 209587, 209936, 209939, 250223R, 250560, 356386, B07C 502, B07C 500
Patent
active
043514375
ABSTRACT:
Potatoes carried on a roller table conveyor are presented in transverse rows at an inspection area illuminated by a lamp from a first direction and observed by a line imaging camera along a second direction arranged by a mirror to be approximately at right angles to the first direction. The camera scans repeatedly across each row and provides an output detection signal representing the reflected radiation. The camera observes a sharply illuminated boundary of the potatoes against a dark background a micro-computer processes the detection signal to provide an information signal representative of the length of a potato along the direction of its row. Size grading, for example, may be effected by directing potatoes along different routes by deflecting fingers controlled in dependence upon the information signal. An operator may observe potatoes in the inspection area by means of a television camera and monitor, and may indicate by a lightpen a potato to be rejected by the subsequent deflecting fingers. The deflecting fingers are actuated in dependence upon both an identifying signal and identifying the reject potato and an information signal representative of the length of the potato along the length of the row.
REFERENCES:
patent: 3472375 (1969-10-01), Mathews
patent: 3943361 (1976-03-01), Miller
patent: 4152767 (1979-05-01), Laliotis
patent: 4168005 (1979-09-01), Sandbank
patent: 4179707 (1979-12-01), Sjodin
Knowles Allen N.
Lockwood Graders (UK) Limited
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