Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Traveling items shifted to form line – or into end or edge...
Patent
1990-06-19
1991-10-22
Hajec, Donald T.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Traveling items shifted to form line, or into end or edge...
198394, 198415, 198786, 209545, 209586, 209914, 209934, B07C 104, B07C 504
Patent
active
050587498
ABSTRACT:
An apparatus for sorting articles according to size inlcudes a plurality of moving belt assemblies and an elongated hopper provided above the moving belt assemblies for feeding a plurality of articles to the same. The fed articles are aligned and spaced apart as they are transported along the moving belt assemblies. A light emitting device is adjacently disposed on one side of each movable belt assembly, and a photodetecting device is disposed opposite the light emitting device and adjacent to the other side of the movable belt assemblies. The articles cast shadows upon the photodetecting device as they move past the light emitting device. The photodetecting device transmits electrical signals corresponding to the sizes of the shadows which are received by a control circuit. The control circuit classifies the detected articles according to the transmitted electrical signals and actuates a plurality of electromagnetically operated push rods. Each of the push rods discharge a group of articles belonging to the same size range into one of a plurality of collector members.
REFERENCES:
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patent: 4901842 (1990-02-01), Lemboke et al.
Hajec Donald T.
Jung-Mei Jong Chiu
Kaufman Joseph A.
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