Butchering – Slaughtering – Throat slitting or severing
Patent
1999-03-31
2000-02-01
Little, Willis
Butchering
Slaughtering
Throat slitting or severing
452170, A22C 2514
Patent
active
060196750
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a device for decapitation of fish, comprising a cutting device with a first actuator device for operation thereof, a transport device whereby fish are consecutively transported in a transport direction and a transport plane towards the cutting device while they are lying on one side with their noses turned towards the cutting device, and a computer which is arranged to receive successive information concerning the type and the size of the fish.
In, e.g., NO 158602 there is disclosed a device of the above-mentioned type comprising a rotating, circular knife blade which cuts the fish head alone a plane which extends approximately perpendicularly to the fish's longitudinal direction behind the gills.
With this device a great deal of fish flesh remains on the amputated head and correspondingly less flesh on the remaining part of the fish, thus increasing the amount of waste and reducing the amount of valuable food.
Moreover, the known devices of this type are relatively large and expensive. When used at sea, therefore, they are only suitable for relatively large boats. In the case of small boats fish is gutted and decapitated by hand, which may entail a risk of personal injury and inaccurate gutting and decapitation due to the boat's movements, slippery decks, etc.
The object of the invention is to provide a device of the type mentioned in the introduction which is not encumbered with the above-mentioned disadvantages, and which is suitable for use on boats with a length of down to approximately 10 m.
The characteristics of the device according to the invention are presented in the characteristic features indicated in the claims.
The invention will now be described in more detail with reference to the drawing which schematically illustrates an embodiment of the device according to the invention.
FIG. 1 is a side view of a device according to the invention, where components have been cut away.
FIG. 2 is a top view of the device illustrated in FIG. 1.
FIGS. 3 and 4 are views of the front section of fish of two different types .
The position and direction indications used below should be understood to refer to the figures concerned as these are viewed by the reader, "up", e.g., being understood as the direction towards the edge of the page which faces away from the reader.
As will be seen from the following description, the device according to the invention comprises a number of actuators. It should be understood that these comprise two main components which can be moved in relation to each other for movement of one object in relation to a second object, the actuator being connected on one side to one object and connected on the other side to the second object. The type of actuator is of no significance here. Thus the actuator may be a hydraulic cylinder, a pneumatic cylinder, an electrically operated jack, or the like.
As illustrated in FIGS. 1 and 2 the device for decapitation of fish comprises a decapitation device 2 and a conveyor 4 which are supported on a common frame 6.
The conveyor may be a belt conveyor of a known per se type, which has turning rollers 10, only one of which is shown, which are rotatably mounted on the frame 2, and which support a conveyor belt with an upper and a lower part 12 and 14 respectively. During operation the upper part 12 is moved to the left and is arranged for transport of fish substantially in a horizontal transport plane.
The decapitation device 2 comprises a first actuator device which in the illustrated embodiment comprises a first actuator 16. The first actuator 16 is connected on one side to a frame section 18, which is located remotely from the shown, left end section of the conveyor belt and in the conveyor belt's extension. On the other side the actuator 16 is connected to a support plate 20. The actuator 16 is arranged to lift or lower the support plate in a linearly translational manner in the same way as a lifting table and may, e.g., be an articulated jack or the like. The first actuator device may comprise guide rods etc. in order to obtai
REFERENCES:
patent: 2584567 (1952-02-01), Fonken et al.
patent: 4756058 (1988-07-01), Gollnitz et al.
patent: 5480347 (1996-01-01), Hicks
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