Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Separating means
Patent
1977-03-16
1978-10-24
Knowles, Allen N.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Separating means
209933, B07C 110
Patent
active
041220013
ABSTRACT:
Worms are harvested by placing worm-containing bedding material from a breeding bin on a flat breaking board mounted within a wooden frame. The bedding material is pushed from the board onto an adjacent screen mounted within the frame at approximately the same level as the board. The screen is covered by the bedding material to a uniform depth while exposed from above to light. A worm-receiving tray with dark inner bottom surface is removably mounted in darkness within the frame below the screen. The frame is leg-supported at one end, while its screen-end rests on the top edge of a bin to be harvested. An upper layer of the bedding material is gradually skimmed from the screen into the bin, causing the worms to work their way deeper into the bedding material remaining on the screen. The skimming process is repeated until all worms have worked their way down through the bedding material to the screen. From there the larger worms crawl through the screen into the tray below. The smaller worms which cannot reach the bottom of the tray remain on the screen and are returned to the bin with the bedding material.
REFERENCES:
patent: 1030653 (1912-06-01), Dyer
patent: 2037038 (1936-04-01), Levy
patent: 3105698 (1963-10-01), Bonarrigo et al.
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