Method and apparatus for filleting fish

US4365387A · kind A · utility

Assignee

• Nordischer Machinenbau Rud. Baader · DE

Inventors

• Franz Hartmann · Geesthacht, DE
• Manfred Krohn · Ronnenberg, DE

Key dates

• Filing date: Dec 24, 1980
• Grant date: Dec 28, 1982
• Expiry date: Dec 24, 2000

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A22C25/16
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

There is disclosed a mechanical fish filleting process, whose use with decapitated fish, particularly, those of approximately circular cross section, enables a substantial reduction in the manual trimming which is caused by falsely positioned cuts. A sequence of cuts is proposed which permits a more exact guiding and thus also alignment of the fish. The method comprises the following cut sequence: belly filleting cut, rib cut, severing cut to separate the lateral vertebral appendages and/or ribs from the back bone, back filleting cut guided from the belly to the vicinity of the fin holders of the dorsal fins, pinbone cut and back severing cut on both sides of the dorsal fins. The dorsal fins are so guided that they are reliably introduced between the back severing knives so that the fillets can be cut free from the fins or their remains.