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Title:
A DEVICE FOR CLEANING AND GUTTING FISH
Document Type and Number:
WIPO Patent Application WO/2017/131527
Kind Code:
A1
Abstract:
A device (1) for cleaning and gutting fish. The device comprises a work bench (3), a support arrangement (5), and a cutting arrangement (7) for cutting the fish. The support arrangement comprises a first plate (40) and a second plate (42), spaced apart and positioned extending away from the work bench. The support arrangement comprises a receipt state enabling the fish is to be introduced between the plates and a support state in which the plates and the work bench are in abutment with the fish. The device comprises a displacement mechanism (50) controllably displacing the plates so that the support arrangement is changed between the receipt and the support state, and the cutting arrangement is adapted to execute a first cutting operation and a second cutting operation while the fish is in a static state on the work bench supported by the support arrangement in the support state.

Inventors:
GUDMUNDSEN, Oddbjørn (Munkajordvegen 45, 4276 Veavågen, 4276, NO)
Application Number:
NO2017/050008
Publication Date:
August 03, 2017
Filing Date:
January 11, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HAVFRONT AS (6734 Rugsund, 6734, NO)
International Classes:
A22C25/08; A22C25/06; A22C25/14
Foreign References:
JP2000228943A2000-08-22
US20100216381A12010-08-26
US2685360A1954-08-03
SU505416A11976-03-05
Attorney, Agent or Firm:
HÅMSØ PATENTBYRÅ ANS (P.O. Box 171, 4301 Sandnes, 4301, NO)
Download PDF:
Claims:
C l a i m s

1 , A device (1 ) for cleaning and gutting fish, the device (1 ) comprises

- a work bench (3),

- a support arrangement (5) for holding the fish on the work bench (3), and

- a cutting arrangement (7) for cutting the fish,

c h a r a c t e r i s e d i n that

the support arrangement (5) comprises a first plate (40) and a second plate (42), spaced apart and positioned extending away from the work bench (3), wherein the support arrangement (5) comprises a receipt state in which the first plate (40) and second plate (42) are positioned so to enable the fish is to be introduced between the plates (40, 42) on the work bench (3), and a support state in which the first plate (40) and the second plate (42) are positioned so that the plates (40, 42) and the work bench (3) are in abutment with the fish, wherein the device (1 ) further comprises a displacement mechanism (50) adapted to controllably displace at least one of the plates (40, 42) on the work bench (3) so that the support arrangement (5) is changed between the receipt state and the support state, wherein the cutting arrangement (7) is adapted to execute a first cutting operation and a second cutting operation while the fish is in a static state on the work bench (3) and supported by the support arrangement (5) in the support state.

2. The device (1 ) according to claim 1 , wherein the first cutting operation and the second cutting operation are adapted to be executed simultaneously.

3 The device (1 ) according to any of claim 1 and 2, wherein the first cutting operation is adapted to open the fish by means of a cut directed along the length of the body the fish.

4. The device (1 ) according to any of the previous claims, wherein the cutting arrangement (7) comprises a first cutting tool (10) for the first cutting operation and the work bench (3) comprises an elongated opening (22) for enabling the body of the fish to be subjected to the first cutting tool (10).

5. The device (1 ) according to claim 4, wherein the first cutting tool (10) is dispiaceable along the elongated opening (22).

6. The device (1 ) according to any of the previous claims, wherein the second cutting operation is adapted to separate the head of the fish from its body by means of a cut directed non-parallel to the length of the body of the fish.

7. The device (1 ) according to any of the previous claims, wherein the cutting arrangement (7) comprises a second cutting tool (12) for the second cutting operation, which second cutting tool (12) is arranged at a front end portion (60) of the support arrangement (5).

8. The device (1 ) according to any of the previous claims, wherein the second cutting tool (12) is displaceable towards and away from the work bench (3).

9. The device (1 ) according to any of the previous claims, wherein the displacement mechanism (50) is adapted to controllab!y displace the first plate (40) and the second plate (42) on the work bench (3) when the support arrangement (5) is changed between the receipt state and the support state.

10. The device (1 ) according to any of the previous claims, wherein the first plate (40) and the second plate (42) are spaced apart along a center line (CL) in the receipt state and support state of the support arrangement (5).

1 1 . The device (1) according to claim 10, wherein the support arrangement (5) comprises a front end portion (60) towards which the head of the fish is adapted to be arranged and a rear end portion (62) toward which the tail of the fish is adapted to be arranged, and wherein the plates (40, 42) are arranged inclined in respect to the center line (CL) so that the distance between the plates (40, 42) is wider at the front end portion (60) than at the rear end portion (62).

12. The device (1) according to claim 11 , wherein the plates (40, 42) are arranged inclined in respect to the center line (CL) at an angle (a) in the range of 3 - 10 degrees, preferably in the range of 3 - 5 degrees.

13. The device (1 ) according to any of the previous claims, wherein the displacement mechanism (50) comprises a primary arm arrangement (70) for displacing the first plate (40), the primary arm arrangement (70) comprises a pivot arm (72) with a first end part (74a) and a second end part (74b), a pivot (76) pivotably attaching the pivot arm (72), wherein the displacement mechanism (50) further comprises a drive unit (78) adapted to act on the first part (74a) of the pivot arm (72) so that the pivot arm (72) is pivoted around the pivot (76) and the second end part (74b) of the pivot arm (72) acts on the first plate (40).

14. The device (1 ) according to claim 13, wherein the primary arm arrangement (70) comprises a pair of support arms (80) spaced apart and a support bar (82) connecting the pivot arm (72) with the pair of support arms (80).

15. The device (1 ) according to any of claim 13-15, wherein the displacement mechanism (50) comprises a corresponding secondary arm arrangement (71 ) for displacing the second plate (42).

Description:
A DEVICE FOR CLEANING AND GUTTING FISH

Introduction

The present invention relates to a device for cleaning and gutting fish. In particular, the present invention relates to a compact and cost-effective machine for cleaning and gutting fish, in particular to be installed on a fishing vessel for use in offshore conditions. The device comprises a work bench, a support arrangement for holding the fish on the work bench and a cutting arrangement for cutting the fish.

Prior art

It is desirable to clean and gut fish as early as possible after that the fish has been caught in order to avoid spoiling the fish. In addition, it is desirably to reduce undesirable weight of the catch that cannot be sold. Accordingly, cleaning and gutting of fish is preferably done immediately after catching the fish on a fishing vessel at sea. The process of cleaning and gutting fish usually involves a plurality of operation, such as opening the body of the fish, removal of guts, cutting and removal of the head, and etcetera.

Machines for cleaning and gutting fish are available on the marked for offshore use. These machines are configured to perform above mentioned plurality of cleaning and gutting operation by means of displacing the fish between a plurality of separately located stations, where each station provides a single of these cleaning and gutting operations. For example, at a first station the body of the fish is cut open, at a second station the guts of the fish are removed, at a third station the head of the fish is removed. The fish is transported between the plurality of stations by means of a conveyor band, or by revolving a plurality of chambers to the stations in consecutive order, and etcetera.

A problem with prior art machines is that they are extensive in size and requiring valuable space on the fishing vessels. Accordingly, prior art machines can only be installed on sufficiently large fishing vessels. A further problem is that these machines due to their size are expensive and complex. Yet another problem is that a malfunction of a single station may result in that machine as a whole becomes inoperative. GB229303 discloses a machine adapted to remove the heads and intestines of fish. The machine comprises U-shaped troughs with fixed sides for the fish and a gear wheel with links of chains for displacing the troughs. The machine further comprises a knife and a fork adapted to separate the head and the guts from the body.

US3838478 discloses a gutting machine for fish. The machine comprises a rotatably driven clip spider including body clips, a belly opener, intestine stripper and a neck cutter. The clip spider is adapted to be rotated so that the fish is subjected to the belly opener, the intestine stripper and the neck cutter.

Summary of the invention

The invention has for its object to remedy or to reduce at least one of the drawbacks of the prior art, or at least provide a useful alternative to prior art. A first object of the invention is to provide a compact and cost effective device for cleaning and gutting fish. A second object of the invention is to provide a device for cleaning and gutting fish with improved reliability.

These objects are achieved through features which are specified in the description below and in the claims that follow. In particular the objects are achieved by means of a device for cleaning and gutting fish according to claim 1. The device comprises a work bench, a support arrangement for holding the fish on the work bench, and a cutting arrangement for cutting the fish. The device is characterized in that the support arrangement comprises a first plate and a second plate, spaced apart and positioned extending away from the work bench, wherein the support arrangement comprises a receipt state in which the first plate and the second plate are positioned so to enable the fish to be introduced between the plates on the work bench, and a support state in which the first plate and the second plate are positioned so that the plates and the work bench are in abutment with the fish, wherein the device further comprises a displacement mechanism adapted to control- lab!y displace at least one of the plates on the work bench so that the support arrangement is changed between the receipt state and the support state, wherein the cutting arrangement is adapted to execute a first cutting operation and a second cutting operation while the fish is in a static state on the work bench and supported by the support arrangement in the support state.

The support arrangement is adapted to be changed between the receipt state and the support state. In the receipt state, the fish is adapted to be received between the first plate and the second plate on the work bench. In the support state, the fish is adapted to be maintained fixed in abutment with the first plate, the second plate and the work bench.

By means of the support arrangement, when the support arrangement is in the support state, the fish is being securely fixed in a predefined position in abutment with the first plate, the second plate and the work bench. Thereby, the device enables both the first cutting operation and the second cutting operation to be executed without displacement of the fish. Accordingly, the first cutting op- eration and the second cutting operation may be executed on the fish without displacement. Thereby, the device of the invention enables a compact design that enables the device to be installed on fishing vessels unable to accommodate prior art sized devices for cleaning and gutting fish. The cost for producing the device of the invention is also reduced compared with prior art devices in that no mechanism for displacing the fish between different work stations is required. A plurality of device of the invention may also be installed on large fishing vessels to replace operation of a prior art extensive device.

The device of the invention further more provides an improved reliability in that a malfunction of one of the first and second cutting operation does not require complete interruption of the operation of the device as in prior art devices, instead operation of the other of the first and second cutting operation can be continued.

The term "cleaning and gutting fish" relates to operations in which the fish is subjected to cutting or other mechanical operation for opening or removing certain parts of the fish, such as the guts, the head, and etcetera. It shall be understood that the operations subjected to the fish by the device may be only be a part of the total operations for cleaning and gutting the fish.

It shall further be understood that the fish may be positioned manually between the plates by an operator when the support arrangement is in the receipt state. Alternative, the device may be provided with means for automatically positioning the fish between the plates. Likewise, the fish may manually be removed from the support arrangement after the fish has been subjected to the first cutting operation and the second cutting operation. Alternatively, the device may be provided with means for automatically removing the fish from the support arrangement.

According to an embodiment of the invention, the first cutting operation and the second cutting operation are adapted to be executed simultaneously or at least partly simultaneously. The support arrangement holds the fish securely fixed in the predefined position and thereby enables the first cutting operation and the second cutting operation to be executed simultaneously or at least partly simultaneously. Thereby, the device provide a high rate of operation without displacement of the fish. Accordingly, contrary to prior art devices, no transport time between the cutting operations is required.

According to an embodiment of the invention, the first cutting operation is adapted to open the fish by means of a cut directed along the length of the body the fish. The cut along the length of the body the fish opens up the body of the fish and exposes the guts and possible roe. The roe and the guts may thereafter be removed and separated manually by an operator. Preferably, the first cutting operation is arranged from the head towards the tail of the fish.

According to an embodiment of the invention, the cutting arrangement comprises a first cutting tool for the first cutting operation and the work bench comprises an elongated opening for enabling the body of the fish to be subjected to the first cutting tool,

According to an embodiment of the invention, the first cutting tool is displaceable along the elongated opening Preferably, the first cutting tool comprises a first rotatable blade. Alternatively, the first cutting tool may be arranged in form of a band saw, a reciprocating saw, etcetera.

According to an embodiment of the invention, the second cutting operation is adapted to separate the head of the fish from its body by means of a cut directed non-parallel to the length of the body of the fish. The cut non-parallel to the length of the body of the fish enables removal of the head of the fish. Preferably, the cut of the second cutting operation is directed perpendicular to the length of the body of the fish.

According to an embodiment of the invention, the cutting arrangement comprises a second cutting tool for the second cutting operation, which second cutting tool is arranged at a front end portion of the support arrangement.

According to an embodiment of the invention, the second cutting tool is displaceable towards and away from the work bench. Preferably, the second cutting tool comprises a second rotatable blade. Alternatively, the second cutting tool may be arranged in form of a band saw, a reciprocating saw, etcetera.

According to an embodiment of the invention, the device comprises an outlet channel for discharging the head of the fish. The outlet channel may be directed to a container or to an outside of a vessel to which the device is installed.

According to an embodiment of the invention, the displacement mechanism is adapted to controlla- bly displace the first plate and the second plate on the work bench when the support arrangement is changed between the receipt state and the support state.

According to an embodiment of the invention, the first plate and the second plate are spaced apart along a center line in the receipt state and in support state of the support arrangement. The center line represent the center between the plates both in the receipt state and in support state.

According to an embodiment of the invention, the support arrangement comprises a front end portion towards which the head of the fish is adapted to be arranged and a rear end portion toward which the tail of the fish is adapted to be arranged, and wherein the plates are arranged inclined in respect to the center line so that the distance between the plates is wider at the front end portion than at the rear end portion.

By means of arranging plates inclined in respect to the center line, the abutment of the plates along the body of the fish is improved in that the wides part of fish is predominantly at the neck of the fish. Accordingly, the support arrangement holds the fish securely fixed in the support state without damaging the body of the fish.

According to an embodiment of the invention, the plates are arranged inclined in respect to the center line at an angle in the range of 3 - 10 degrees, preferably in the range of 3 - 5 degrees.

According to an embodiment of the invention, the first cutting operation executes the cut extending in parallel to the center line. Preferably, the first cutting operation executes the cut at or in vicinity of the center line. The support arrangement will arrange the center of the body of the fish along the center line. When executing the cut at or in vicinity of the center line, the cut will be along the center of the body of the fish.

According to an embodiment of the invention, the support arrangement comprises a positioning device for setting the positioning of the fish in a certain position between the front end portion and the rear end portion of the support arrangement. The positioning device enables the fish to be positioned on the work bench between front end portion and the rear end portion of the support arrangement for an accurate position of the cut of the first cutting operation and the second cutting operation.

According to an embodiment of the invention, positioning device comprises an elongated obstruction adapted to be positioned between the gills and collar bones of the fish. Thereby, the fish is arranged in a certain position between the front end portion and the rear end portion of the support arrangement. Preferably, the obstruction comprises a bar extending perpendicular to or essentially perpendicular to the centre line.

According to an embodiment of the invention, the displacement mechanism comprises a primary arm arrangement for displacing the first plate, the primary arm arrangement comprises a pivot arm with a first end part and a second end part, a pivot pivotably attaching the pivot arm, wherein the displacement mechanism further comprises a drive unit adapted to act on the first part of the pivot arm so that the pivot arm is pivoted around the pivot and the second end part of the pivot arm acts on the first plate. The primary arm is used for displacement of the first plate between positions corresponding to the receipt state and the support state.

According to an embodiment of the invention, the drive unit is adapted to displace the first end part of the pivot arm between a first position and second position corresponding to the receipt state and the support state respectively.

According to an embodiment of the invention, the primary arm arrangement comprises a pair of support arms spaced apart and a support bar connecting the pivot arm with the pair of support arms. By means arranging the pivot arm connected with the pair of support arms, the stability of the primary arm arrangement is improved. According to an embodiment of the invention, the pivot arm is located closer to the rear end portion of the support arrangement than the front end portion of the support arrangement, and the pair of support arms are arranged closer to the front end portion of the support arrangement than the rear end portion of the support arrangement. Preferably, the pair of support arms are spaced apart in a direction parallel to or essentially perpendicular to the center line of the support arrangement.

According to an embodiment of the invention, the displacement mechanism comprises a corresponding secondary arm arrangement for displacing the second plate. The secondary arm arrangement is used for displacement of the second plate between positions corresponding to the receipt state and the support state.

According to an embodiment of the invention, the device comprises a separate drive unit for each of the primary arm arrangement and the secondary arm arrangement. Alternatively, a single drive unit may be used for pivoting both the primary arm arrangement and the secondary arm arrangement.

According to an embodiment of the invention, the device comprises a control unit adapted to control the drive unit so that the support arrangement is changed between the receipt state and the support state.

According to an embodiment of the invention, said at least one plate is adapted to be displaced on the work bench from the support state and the receipt state after the first and second cutting operation have been executed on the fish

In the following is described examples of preferred embodiments illustrated in the accompanying drawings, wherein:

Fig. 1 discloses a perspective view of a device for cleaning and gutting fish according to an embodiment of the invention;

Fig. 2 discloses a detail view of a first cutting tool of the device in fig. 1 ;

Fig. 3 discloses a detail view of a second cutting tool of the device in fig. 1 ;

Fig. 4 discloses a detail view of a support arrangement of the device in fig. 1 ;

Fig. 5 discloses a schematic view of a first primary arm arrangement of the support arrangement in fig. 4;

Fig. 6a-b discloses an embodiment of a displacement mechanism of the device in fig. 1 ; Fig. 7a discloses a receipt state of the support arrangement in fig. 4; and Fig. 7b discloses a support state of the support arrangement in fig. 4. DetaM description of theiftveatto

Fig. 1 discloses a perspective view of a device 1 for cleaning and gutting fish according to an embodiment of the invention. The device 1 is adapted to be installed on a fishing vessel.

The device 1 comprises a work bench 3, a support arrangement 5 for holding the fish on a work bench 3, and a cutting arrangement 7 for cutting the fish. For the purpose of explanation of the device 1 , the support arrangement 5 is only partly disclosed in fig. 1 ,

The cutting arrangement 7 comprises a first cutting tool 10 for executing a first cutting operation on the fish and a second cutting tool 12 for executing a second cutting operation on the fish. In the disclosed example, the first cutting operation is adapted to open the fish by means of a cut directed along the length of the body the fish and the second cutting operation is adapted to separate the head of the fish from its body by means of a cut directed perpendicular to the length of the body of the fish.

An example of the first cutting tool 10 is discloses in fig. 2. The first cutting tool 10 comprises a first rotatable blade 20. Alternatively, the first cutting tool 10 may comprise a band saw, a reciprocating saw, etcetera. The rotatable blade 20 is adapted to be displaced into contact with the fish in order to execute the first cutting operation. In the disclosed embodiment, the work bench 3 comprises an elongated opening 22 for enabling the body of the fish to be exposed to the first rotatable blade 20.

The first cutting tool 10 comprises displacement means for displacing the first rotatable blade 20 to exposure with the body of the fish and along the body of the fish. The displacement means comprises a first motor unit 24, such as a hydraulic cylinder, an electric motor, etcetera. The first cutting tool 10 further comprises a second motor unit 26 for setting the first rotatable blade 20 into rotation. The first cutting tool 10 is further provided with first adjustment means 28 for setting the length of the displacement of first rotatable blade 20.

An example of the second cutting tool 12 is discloses in fig. 3. The second cutting tool 12 comprises a second rotatable blade 30. Alternatively, the second cutting tool 12 may comprises a band saw, a reciprocating saw, etcetera. The second cutting tool 12 is arranged at an end portion of the support arrangement 5. The second cutting tool 12 is adapted to be displaced in a direction towards and away from the work bench 3 in order to enable the neck of the fish to be exposed to the second rotatable blade 30.

In the disclosed embodiment, the second cutting tool 12 comprises displacement means for displacing the second rotatable blade 30 to exposure with the neck of the fish for separating the head of the fish from its body. The displacement means comprises a third motor unit 32, such as a hydraulic cylinder, an electric motor, etcetera. The second cutting tool 12 further comprises a fourth motor unit 34 for setting the second rotatab!e blade 30 into rotation. The second cutting tool 12 is further provide with second adjustment means 36 for setting the angle of the displacement of second rotatable blade 30.

The fish is adapted to be arranged to the support arrangement 5 on the work bench 3 by means of that an operator manually positions the fish or alternative the device 1 may be provided with means for automatically positioning the fish. After the fish has been subjected to the first cutting operation and the second cutting operation, the support arrangement 5 is changed to the receipt state and the operator manually removes the fish from the support arrangement 5 or alternative the device 1 may be provided with means for automatically discharging the fish from the support arrangement 5.

The device 1 further comprises an outlet channel 38 for discharging the head of the fish after the second cutting operation has been executed on the fish, see fig. 1. The outlet channel 38 may be directed to a container or to an outside of a fishing vessel to which the device 1 is installed.

The support arrangement 5 of the device 1 will further be discussed with reference to fig. 4, 5, 6a, 6b, 7a and 7b.

The support arrangement 5 comprises a first plate 40 and a second plate 42, spaced apart and positioned extending away from the work bench 5. In the disclosed example, the plates 40, 42 extend essentially perpendicular away from the work bench 3.

The support arrangement 5 comprises a receipt state in which the first plate 40 and the second p'ate 42 are positioned so to enable the fish is to be introduced between the plates 40, 42 on the work bench 3, see fig. 7a. The receipt state enables the fish to be freely positioned or discharged from the support arrangement 5.

The support arrangement 5 further comprises a support state in which the first plate 40 and the second plate 42 are positioned so that the plates 40, 42 and the work bench 3 are in abutment with the fish, see fig. 7b. Accordingly, the spacing between the two plates 40, 42 is smaller when the support arrangement 5 is in the support state compared to when the support arrangement 5 is in the receipt state. The support state enables the fish to be securely fixed in a predefined position in abutment with the first plate 40, the second plate 42 and the work bench 3.

The device 1 further comprises a displacement mechanism 50 adapted to controllably displace at least one of the plates 40, 42 on the work bench 3 so that the support arrangement 5 is changed between the receipt state and the support state, see fig. 5. In the disclose embodiment, the displacement mechanism 50 is adapted to controllably displace both the first plate 40 and the second plate 42 in respect to the work bench 3, see fig. 7a and 7b.

The first plate 40 and the second plate 42 are spaced apart along a center line CL in both the receipt state and support state of the support arrangement 5. The center line CL represent a center of the spacing of the two plates 40, 42. In In the disclosed embodiment, both of the plates 40, 42 are displaced on the work bench 3 when the support arrangement 5 is changed between the receipt state and the support state. Accordingly, the center line CL has the same position in both the receipt state and the support state. Furthermore, in the disclosed embodiment, the elongated opening 22 is arranged extending in parallel to the center line CL and at the extension of the center line CL.

The support arrangement 3 comprises a front end portion 60 towards which the head of the fish is adapted to be arranged and a rear end portion 62 toward which the tail of the fish is adapted to be arranged, see fig. 4, In the disclosed embodiment, the plates 40, 42 are arranged inclined in respect to the center line CL so that the distance between the plates 40, 42 is wider at the front end portion 60 than at the rear end portion 62. By configuring the plates 40, 42 inclined in respect to the center line CL, an improved abutment between the body of the fish and the plates 40, 42 is obtained. Accordingly, the fish is fixed securely in the predefined position without being damaged or pinched.

According to an embodiment of the invention, the plates 40, 42 are arranged inclined in respect to the center line CL at an angle a in the range of 3 - 10 degrees, preferably in the range of 3 - 5 degrees.

With reference to fig. 5, the device 1 comprises a displacement mechanism 50 adapted to control- lably displace the first plate 40 and the second plate 42 on the work bench 3 when the support arrangement 5 is changed between the receipt state and the support state

The displacement mechanism 50 comprises a primary arm arrangement 70 for displacing the first plate 40 on the work bench 3 when the support arrangement 5 is changed between the receipt state and the support state. The displacement mechanism 50 also comprises a corresponding secondary arm arrangement 71 for displacing the second plate 42 on the work bench 3, see fig. 4 and

5.

The primary arm arrangement 70 comprises a pivot arm 72 with a first end part 74a and a second end part 74b, a pivot 76 pivotably attaching the pivot arm 72. The displacement mechanism 50 further comprises a drive unit 78 adapted to act on the first part 74a of the pivot arm so that the pivot arm 72 is pivoted around the pivot 76 and the second end part 74b of the pivot arm acts on the first plate 40. The drive unit 78 is for example a hydraulic cylinder, an electric motor, etcetera.

The device 1 further comprises a control unit adapted to control the drive unit 78 so that the support arrangement 5 is changed between the receipt state and the support state. The control unit is not disclosed in the figures. The device 1 further comprises a control panel 90 adapted to induce the control unit to change support arrangement between the receipt state and the support state, see fig. 1. In the disclosed embodiment, the primary arm arrangement 70 comprises a pair of support arms 80 spaced apart and a support bar 82 connecting the pivot arm 72 with the pair of support arms 80. The primary arm arrangement 70 further comprises abutment arm 84 connected to the support bar 82 and adapted to be in contact with the first plate 40 and transfer force from the pivot arm 72 to the first plate 40.

The primary arm arrangement 70 is configured so that the pivot arm 72 is located closer to the rear end portion 62 of the support arrangement 5 than the front end portion 60 of the support arrangement 5. The primary arm arrangement 70 is further configured so that the pair of support arms 80 are arranged closer to the front end portion 60 of the support arrangement 5 than the rear end portion 62. Preferably, the pair of support arms 80 are spaced apart in a direction along the center line CL of the support arrangement 5.

By means of the pair of support arms 80 connected to the pivot arm 72, the stability of the primary arm arrangement 70 is improved when the primary arm arrangement 70 is configured comprising a single pivot arm 72.

Fig. 6a and 6b discloses an embodiment of the displacement mechanism 50 in further details. The displacement mechanism 50 comprises a spring element 92 connected to pivot arm 72 and the drive unit 78 by means of connection arrangement 94. In the disclosed embodiment, the spring element 92 comprises a helical spring and the connection arrangement 94 comprises a roller chain 96. The drive unit 78 is adapted to act on the pivot arm 72 so that that pivot arm 72 is pivoted from a position representing the receipt state to a position representing the support state of the support arrangement 5. Vice versa, the spring element 92 is adapted to act on the pivot arm 72 so that that pivot arm 72 is pivoted from a position representing the support state to a position representing the receipt state of the support arrangement 5.

In the disclosed embodiment in fig. 6b, the displacement mechanism 50 further comprises a connection arrangement 100 for connecting the primary arm arrangement 70 and the secondary arm arrangement 71 together. The connection arrangement 100 comprises a link aim 102 and a respective wheel 104 for connecting the pivot arms 72 of the primary arm arrangement 70 and the secondary arm arrangement 71. The displacement mechanism 50 comprises a further drive unit 106 adapted to activate and deactivate a break unit 108 for holding the support arrangement 5 fixed in the support state.

The support arrangement 5 of the invention enables the first cutting operation and the second cutting operation to be executed simultaneously without displacement of the fish. Accordingly, the device 1 of the invention can be constructed more compact compared with prior art devices for cleaning and gutting fish. The compact design enables the device 1 to be installed on small sized fishing vessels. In the disclosed embodiment, the support arrangement 5 comprises a positioning device 85 for positioning of the fish in a certain position between the front end portion 60 and the rear end portion 62 of the support arrangement 5. The positioning device 85 is arranged at the front end portion 60 of the support arrangement 5. The positioning device 85 comprises an elongated obstruction, such as a bar, extending perpendicular to the centre line CL. The elongated obstruction is adapted to be positioned between the gills and collar bones of the fish. By means of the positioning device 85, it is assured that the fish is in the correct position between the front end portion 60 and the rear end portion 62 of the support arrangement 5 for an accurate position of the first cutting operation and the second cutting operation on the fish.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.