The Kartridg Pak Co.

Roy Settle Rousseau

Apparatus for removing and recovering meat from trimmed and untrimmed bone fragments comprises a hollow sleeve open at one end for receiving a quantity of bone fragments to be processed. Hydraulic cylinders raise the sleeve to bring one end into engagement with an extrusion block, and a piston slidably disposed at the other end of the sleeve is advanced initially by relatively high speed jack cylinders and finally by a low speed ram cylinder to compress the bone fragements against the block. The extrusion block includes a plurality of concentric annular recesses and interfitting extrusion rings which form an inwardly facing foraminous surface through which meat recovered in fluid form as a result of the compression process passes. The rings are slidably received within the recesses to facilitate removal for cleaning, and are partially extended from the recesses by a pneumatic cylinder after each compression cycle to dislodge bone residue from the foraminous surface. A pressure and seal is maintained between the sleeve and the piston and extrusion head by the combination of an O-ring fitted into an outer circumferential channel on the piston and an inner circumferential channel communicating with an outflow line which relieves pressure from the O-ring.

Method for removing meat from bone fragments

Apparatus for removing and recovering meat from trimmed and untrimmed bone fragments comprises a hollow sleeve open at one end for receiving a quantity of bone fragments to be processed. Hydraulic cylinders raise the sleeve to bring one end into engagement with an extrusion block, and a piston slidably disposed at the other end of the sleeve is advanced initially by relatively high speed jack cylinders and finally by a low speed ram cylinder to compress the bone fragments against the block. The extrusion block includes a plurality of concentric annular recesses and interfitting extrusion rings which form an inwardly facing foraminous surface through which meat recovered in fluid form as a result of the compression process passes. The rings are slidably received within the recesses to facilitate removal for cleaning, and are partially extended from the recesses by a pneumatic cylinder after each compression cycle to dislodge bone residue from the foraminous surface. A pressure seal is maintained between the sleeve and the piston and extrusion head by the combination of an O-ring fitted into an outer circumferential channel on the piston and an inner circumferential channel communicating with an outflow line which relieves pressure from the O-ring.

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Bettendorf, IA, United States of America

Roy Settle Rousseau