DEVICE FOR EXTRACTION OF SEEDS FROM CEDAR CONES Russian patent published in 2000 - IPC

FIELD: devices for extraction of seeds from cedar cones. SUBSTANCE: device includes receiving bin 2, external fixed drum 11 and internal movable drum 12, sieve boot and drive. External fixed drum 1 is made from bars 16 at equal pitch between them; they are located over curve at radii of R₁> R₂> R₃ relative to axis of internal drum 12; drum is provided with loading and dumping ports 17 and 18. Internal movable drum is solid; it is provided with chute 10 and longitudinal rounded-off projections 19 evenly located over cylindrical surface changing to Archimedean spiral. EFFECT: 100% production of clean intact nut. 5 cl, 2 dwg