Classifying – separating – and assorting solids – Adhesion – Coated surface or mass
Patent
1976-03-05
1977-05-03
Spar, Robert J.
Classifying, separating, and assorting solids
Adhesion
Coated surface or mass
198366, 198438, 198441, 209 74M, 214 1BD, B65G 5906
Patent
active
040209504
ABSTRACT:
The present invention provides a method and apparatus for inspecting and sorting buttons and the like. The inspection means includes a main chamber having a first aperture opening with a diameter substantially equal to the diameter of the buttons to be inspected and a center on the optical axis of said chamber. The inspection means and/or the sorting means of the invention includes means for aligning each button in a rapid succession of buttons at the first aperture opening. A light source is positioned to direct a beam of light through a button stationed at the aperture and along the optical axis of the chamber. Positioned within the main chamber and on the optical axis thereof is a light reflecting means for reflecting the transmitted beam of light. Preferably, four light receiving members, each member having a first and second end and being spaced apart 90.degree. from two other members, are positioned in a plane normal to said optical axis. The first end of each member comprises a second aperture positioned adjacent said light reflecting means for receiving light therefrom. The second end of each of said members includes a photosensor means for detecting the reflected light through said second aperture to produce an output signal. A logic circuit is electrically connected to each of the photosensor means for comparing the output signals and providing an inspection signal. Preferably, a sorting means is provided in combination with the inspection apparatus and responsive thereto for rejecting or accepting inspected buttons in accordance with the inspection signal provided.
REFERENCES:
patent: 3552602 (1971-01-01), Duncan
patent: 3785509 (1974-01-01), Girardi
Abraham George F.
Koppers Company Inc.
Massung Howard G.
Spar Robert J.
Yeager Robert D.
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