Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Patent
1982-08-09
1985-07-23
Reeves, Robert B.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Condition responsive means controls separating means
356239, B07C 5342
Patent
active
045304343
ABSTRACT:
An improved method and apparatus for the inspection and sorting of buttons and the like. The buttons to be inspected are fed from a feeder to a mechanical conveyance system which imparts a velocity to and a spacing between the buttons. The buttons are conveyed between a light source and detector, and the light from the source is masked to limit it to the central zone of the button. The light passing through the central zone is converted to an electrical signal by the detector. The signal value, which is a measure of button quality, is independent of velocity and time is compared to preset limits. In addition, a counter circuit determines the symmetry of the buttons. If the signal is within the limits an accept signal is generated, which cooperates in the control operation of the reject mechanism to automatically separate the acceptable and unacceptable buttons. Additionally, the detector in the vicinity of the mechanism which generates an electrical control signal to activate the reject mechanism only when a button is in the proper position relative to the reject mechanism.
REFERENCES:
patent: 4196811 (1980-04-01), Pilesi et al.
Pilesi William D.
Wowczuk Andrew
Reeves Robert B.
U.S. Plastic and Chemical Corp.
Wacyra Edward M.
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