Solid material comminution or disintegration – Apparatus – With separation or classification of material
Patent
1981-06-29
1984-07-17
Abercrombie, Willie G.
Solid material comminution or disintegration
Apparatus
With separation or classification of material
241823, 99513, 100117, 100148, B02B 704
Patent
active
RE0316318
ABSTRACT:
Material obtained from animals, poultry, or fish and containing edible flesh along with normally inedible relatively hard or tough components, such as bone, gristle, tendons, etc., is fed in ground condition into one end of a perforated conduit that has a conveyor srew therein which progressively decreases in conveying capacity from the feed end of the conduit to an imperforate discharge end thereof. Such inedible components are compacted within the imperforate discharge end of the conduit by an extension of the conveyor screw prior to discharge following build-up and conveyance along the interior surface of the perforate portion of the conduit as a filter mat through which edible flesh is forced toward and through the perforations of the conduit to provide a substantially bone-free edible product. The discharge passage surrounding the [exeension] extension of the conveyor screw can be varied in size, preferably by a tapered ring that is movable back and forth axially of the conveyor screw extension, and preferably the spacing between conveyor screw and conduit is variable. The forward faces of the conveyor screw flights are preferably concave to provide a forwardly projecting circumferential overhang that tends to keep particles of bone near the axis of the screw, and the conduit wall thickness is unusually thick so as to withstand high pressures. Unusually high production rates can be obtained by feeding finely ground material into the conduit by means of a [hgh] high pressure pump. The discharged and normally inedible components can be slurried in a digestant liquid and the digested material recovered as a food product by the application of centrifugal force. In instances where some minute particles of bone are discharged with the fleshy components, they can be homogenized by subjecting such flesh components to an attrition operation.
REFERENCES:
patent: Re15117 (1921-05-01), Strickland
patent: 625400 (1899-05-01), Lambert
patent: 2048791 (1936-07-01), Gilliatt
patent: 2109398 (1938-02-01), McNitt
patent: 2322791 (1943-06-01), DeBack
patent: 2775191 (1956-12-01), Youd
patent: 3067462 (1962-12-01), Kullgren
patent: 3285163 (1966-11-01), Burner
patent: 3396768 (1968-08-01), Kurihara
Meat Industry, USSR 1961, No. 2, pp. 8-9.
Abercrombie Willie G.
Beehive Machinery Inc.
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