CA1091405A - Method of filleting fish and a filleting machine for performing this method - Google Patents
Method of filleting fish and a filleting machine for performing this methodInfo
- Publication number
- CA1091405A CA1091405A CA328,743A CA328743A CA1091405A CA 1091405 A CA1091405 A CA 1091405A CA 328743 A CA328743 A CA 328743A CA 1091405 A CA1091405 A CA 1091405A
- Authority
- CA
- Canada
- Prior art keywords
- filleting
- severing
- fish
- knives
- knife means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Abstract
ABSTRACT OF DISCLOSURE:-A fish filleting machine comprises a conveyor for transporting the fish tail forwards, belly filleting knives, back filleting knives, rib knives, first severing knives for the severing through of the flesh strip, and second severing knives for the severing of the fillets at the tail root of the fish. A closed guide track for the backbone of the fish is arranged between the belly filleting knives or the back filleting knives and the second severing knives. The first severing knives lie between the belly filleting knives or the back filleting knives and the rib knives and are connected with control means, which are actuated synchronously with the conveyor and bring the first severing knives into a setting crossing the guide track before the arrival of the end of the abdominal cavity of the respective fish.
Description
BACKGROUND OF THE INVENTION
l. Fleld of the Invention The present invention relates to a method of filleting of flsh comprising the ~teps of conveying the fish tall S forwards and cuttlng free the fillets by performing belly filleting cuts, back fllletlng cuts, and rlb cuts and sev~rlng the ~illets thus cut free from the bone ~keleton of the fi~h by mean~ of severing cuts, and to a fllleting machlne for performing the process, comprising conveyor means to convey flsh tail forward~, belly filleting knife means, a back fllletlng knlfe means, of rlb cuttlng knlfe means, first severlng knife means for severing through flesh of the fish, second severing knife means for severlng the fish at the tail root thereof.
l. Fleld of the Invention The present invention relates to a method of filleting of flsh comprising the ~teps of conveying the fish tall S forwards and cuttlng free the fillets by performing belly filleting cuts, back fllletlng cuts, and rlb cuts and sev~rlng the ~illets thus cut free from the bone ~keleton of the fi~h by mean~ of severing cuts, and to a fllleting machlne for performing the process, comprising conveyor means to convey flsh tail forward~, belly filleting knife means, a back fllletlng knlfe means, of rlb cuttlng knlfe means, first severlng knife means for severing through flesh of the fish, second severing knife means for severlng the fish at the tail root thereof.
2. Description of Prior Art In known pracesses for fllletlng fish, rlb cuts ~tart at the abdominal cavity end at the slde of the tall and leave a trough-llke depresslon at thls polnt ln every flllet. The plece of flesh cut out of the fillet remains on the bone skeleton and represents a measurable 1088 of flesh yleld. The trough-like depresslon comes lnto being through the parts of the fish connected with the back-bone through a respective tape of flesh, whlch remalns uncut laterally beside the vertebrae of the back-bone between belly filleting knives, and back-fllletlng knive~, dl~posed closely behlnd the end of the abdominal cavlty, do not let themselve~ be raised .
~09140S
exastly into the planes of ~lle rib knives. German Letters Patent 943 612 diQcloses a fish filletin~ machine comprlsing a severing apparatus arranged behind the rib knives severing through these flesh tapes. However, this severing S apparatus is arranged behind the rib knives, 80 that these have to cut into the un-qevered band or strlp of flesh to the sldes of the vertebral column.
SUMMA~Y OF THE INVENTION
~09140S
exastly into the planes of ~lle rib knives. German Letters Patent 943 612 diQcloses a fish filletin~ machine comprlsing a severing apparatus arranged behind the rib knives severing through these flesh tapes. However, this severing S apparatus is arranged behind the rib knives, 80 that these have to cut into the un-qevered band or strlp of flesh to the sldes of the vertebral column.
SUMMA~Y OF THE INVENTION
3. Object of the Invention It 18 an essential object of the present inventior~
to enable a defined severing of the fillets to the sides of the vertebrae closely up to the vertebral appendage~
ln the rêgion of the end of the abdominhl cavlty in the fllleting of fish.
Accordlng to one aspect of the present inventlon there 1~ provlded a method of fllletlng flsh, ¢omprlslng the steps of conveying the flsh tall forwards and cuttlng free the fillets by performing belly fllletinq cuts, back fllleting cuts, rib cuts and severlng the fillets thu~ cut free from the bone skeleton of the fish by means of severing cuts, the fillets, after the performance of the belly filleting cuts and the back filletlng cuts, being detached ln the region of the abdominal cavity end by severlng through a flesh strip I25 connecting the fillets with the vertebrae, and being Icut free from the lateral vertebral projections (or appendages) and ribs in the region of the abdomlnal 10914~S
cavity by means of the rib cuts and thereafter campletely ~evered from the bone skeleton by severlng through the fle~h strip from the tail root to the place of detachment behing the abdominal cavity.
S By such relatively 8hort flrst detachment cuts merely ln the region of the abdominal cavlty end of the flsh the flllets are no longer obstructed again~t deformatlon, and the rlb knlves can therefore produce a ~mooth cut.
The thUS achleved re~ult i~ a greater flesh yleld.
According to another aspect of the present lnventlon there is provided a fllleting machlne comprislng conveyor means to convey flsh tall forward~, belly fllletlng knives, back fllletlng knives, rib cutting knlve~, flr~t severlng knlves for severing trough flesh of the f i~h, second sev rlng kni~es for severlng the flsh at the tail~root thereof, clo~ed gulde ~eans for guidlng the backbone of the fish and dlsposed between the seGond severlng kniv 8 and at least one of the fllletlng knlves and the back filleting knlves, the fir~t ~everlng knlve~ bolng dl~po8ed between the rlb knlves and at least one of the belly fllleting~and the back fllletlng knlves and belng connected wlth control means actuable synchronously wlth the conveyor means to dispose the flrst severing knlves at a po~ltlon at which they traverse the gulde means before arrival of the abdominal cavity end of the fish.
Wlth such a fllleting machine lt 18 posslble to maXe short sev~rlng or detachment cuts merely ln the reglon of the belly cavity end ~o as to let the rib cuts 10914(~5 extend smoothly and without depression in prolongation o~ the bely filleting cuts and thus to attain an lncreased yield in fish flesh.
Preferably the first severing knives may be displaceable against a spring force in the conveying direction of the fish. This enables the flesh band to be severed through up to the last vertebral projections at the abdominal cavity end.
The conveyor means may expediently be provided with lo spaced entraining elements or push saddles each adapted to engage a re5pective fi8h. This enables control of the first severing knives to be facilitated and such control means to be simple.
Advantageously the rib knives may comprise ~craping or 8having tool8. This enables the rib cuts to be performed smoothly and flesh to be saved especially since the fillets connected with the fish skeleton at the tail root are held in a stretched condition.
BRIEF DESCRIPTION OF THE DRAWING
Other and further objects of the present invention will be apparent from the following description and claims and are illustrated in the accompanying drawing which by way of illustration shows a preferred embodiment of the present invention and the principles thereof and what now are considered to be the best modes contemplated for applying these principles. Other embodiments of the invention embodying the same or equivalent princlples _~ - 4 -10914(~5 , .
may be used and structural changes may be made as desired by those skilled in the art without departing from the present invention and the scope of the appended claims.
The drawing shows an axonometric lllustratlon of part of a fish filleting machine embodying the present lnvention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the accompanylng drawing, deflectlng wheels of an endless conveyor l are journalled ln a frame (not shown) and are driva~le ln the directlon of the arrow.
The conveyor 1 carrles push saddles 9 on whlch flsh saddled by thelr abdominal cavities can be transported at flxed spacings. ~he push saddles 9 are advanced by the conveyor 1 in a guide path or track 2 which, in a known manner, comprlses two upper and two lower bone guldes ~not de~ignated) and ~erves for the passage of the vertebral column of the flsh. At the start of the guide track 2 and underneath the same a palr of belly filleting knlves 3 are arranged at its upstream end and a palr of rlb knlves 5 at lt~ downstream end.
Above the gulde track 2, a pair of back fllleting knlves 4 are arranged in the proximity of the belly fllleting knlves 3 and a pair of severing knives 7 at the down~tream end of the gulde track 2 for the severlng of the flllet~ from the bone skeleton ln their tall reglon. A pair of severing knives 6 which are like a gravlng, chisel or planing tool and which are raisable and lowerable for severing through : . ~
,.~
the flesh strips are arranged above the guide track 2 between the back filleting knives 4 and rib knives 5 and connected with control means 8 so as to be driven synchronously with the conveyor.
The method of operation of the filleting machlne is as follows:
A fish, opened at least in its abdominal cavity and degutted, is ~o saddled by its abdominal cavlty on one of the push saddles 9 that lts tail points in the direction of motion of the conveyor 1. When the flsh 18 fed by guide means (not shown) to the belly filleting knlves 3, these produce two lncisions to both side~ of the belly spokes of the bone structure and extendlng from the abdominal cavity end up to th~ end of the abdom~nal cavlty. At the same time, the back filleting knlves 4 also produce lncisions, extendlng from the tail root up to the neck, to both sldes of the back spokes.
After the passage of the tail end part of the flsh and before the abdominal cavlty end of the fish reaches the severing knives 6, these are moved downwardly and cross the path of motion 2 of the flsh. They penetrate by their polnts both the flesh bands not severed by the belly fllleting knives 3 and the back fllletlng knlves 4 and thus connecting the fillets with the spinal column and sever the~e through up to the end of the abdomlnal cavlty. A~ter reaching the abdominal cavity, they are deflected upwardly by the lateral vertebral projections -` ~09141~5 .
and prolong the incisions made in the fish by the back filleting knives 4, onto the upper sides of the lateral vertebral projections. On reaching the rib knlves 5, known per se spreaders or cutting supports, disposed before ~he cutting edges of the rib knive~, steer both the fillets upwardly in the region of the abdominal cavity end, and the rib knives 5 ~ever the flllets off from the lateral vertebral projections and rib8 without their cutting edges penetrating lnto the fillets and producing a depression each time. On reaching the sever1ng knlves 7, the fillets are then severed at their tail root and to both sldes of the back bone.
The above described embodiment of the present lnvention enables fillets to be producéd with a greater ~lesh yield and smoother appearance than hitherto~
to enable a defined severing of the fillets to the sides of the vertebrae closely up to the vertebral appendage~
ln the rêgion of the end of the abdominhl cavlty in the fllleting of fish.
Accordlng to one aspect of the present inventlon there 1~ provlded a method of fllletlng flsh, ¢omprlslng the steps of conveying the flsh tall forwards and cuttlng free the fillets by performing belly fllletinq cuts, back fllleting cuts, rib cuts and severlng the fillets thu~ cut free from the bone skeleton of the fish by means of severing cuts, the fillets, after the performance of the belly filleting cuts and the back filletlng cuts, being detached ln the region of the abdominal cavity end by severlng through a flesh strip I25 connecting the fillets with the vertebrae, and being Icut free from the lateral vertebral projections (or appendages) and ribs in the region of the abdomlnal 10914~S
cavity by means of the rib cuts and thereafter campletely ~evered from the bone skeleton by severlng through the fle~h strip from the tail root to the place of detachment behing the abdominal cavity.
S By such relatively 8hort flrst detachment cuts merely ln the region of the abdominal cavlty end of the flsh the flllets are no longer obstructed again~t deformatlon, and the rlb knlves can therefore produce a ~mooth cut.
The thUS achleved re~ult i~ a greater flesh yleld.
According to another aspect of the present lnventlon there is provided a fllleting machlne comprislng conveyor means to convey flsh tall forward~, belly fllletlng knives, back fllletlng knives, rib cutting knlve~, flr~t severlng knlves for severing trough flesh of the f i~h, second sev rlng kni~es for severlng the flsh at the tail~root thereof, clo~ed gulde ~eans for guidlng the backbone of the fish and dlsposed between the seGond severlng kniv 8 and at least one of the fllletlng knlves and the back filleting knlves, the fir~t ~everlng knlve~ bolng dl~po8ed between the rlb knlves and at least one of the belly fllleting~and the back fllletlng knlves and belng connected wlth control means actuable synchronously wlth the conveyor means to dispose the flrst severing knlves at a po~ltlon at which they traverse the gulde means before arrival of the abdominal cavity end of the fish.
Wlth such a fllleting machine lt 18 posslble to maXe short sev~rlng or detachment cuts merely ln the reglon of the belly cavity end ~o as to let the rib cuts 10914(~5 extend smoothly and without depression in prolongation o~ the bely filleting cuts and thus to attain an lncreased yield in fish flesh.
Preferably the first severing knives may be displaceable against a spring force in the conveying direction of the fish. This enables the flesh band to be severed through up to the last vertebral projections at the abdominal cavity end.
The conveyor means may expediently be provided with lo spaced entraining elements or push saddles each adapted to engage a re5pective fi8h. This enables control of the first severing knives to be facilitated and such control means to be simple.
Advantageously the rib knives may comprise ~craping or 8having tool8. This enables the rib cuts to be performed smoothly and flesh to be saved especially since the fillets connected with the fish skeleton at the tail root are held in a stretched condition.
BRIEF DESCRIPTION OF THE DRAWING
Other and further objects of the present invention will be apparent from the following description and claims and are illustrated in the accompanying drawing which by way of illustration shows a preferred embodiment of the present invention and the principles thereof and what now are considered to be the best modes contemplated for applying these principles. Other embodiments of the invention embodying the same or equivalent princlples _~ - 4 -10914(~5 , .
may be used and structural changes may be made as desired by those skilled in the art without departing from the present invention and the scope of the appended claims.
The drawing shows an axonometric lllustratlon of part of a fish filleting machine embodying the present lnvention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the accompanylng drawing, deflectlng wheels of an endless conveyor l are journalled ln a frame (not shown) and are driva~le ln the directlon of the arrow.
The conveyor 1 carrles push saddles 9 on whlch flsh saddled by thelr abdominal cavities can be transported at flxed spacings. ~he push saddles 9 are advanced by the conveyor 1 in a guide path or track 2 which, in a known manner, comprlses two upper and two lower bone guldes ~not de~ignated) and ~erves for the passage of the vertebral column of the flsh. At the start of the guide track 2 and underneath the same a palr of belly filleting knlves 3 are arranged at its upstream end and a palr of rlb knlves 5 at lt~ downstream end.
Above the gulde track 2, a pair of back fllleting knlves 4 are arranged in the proximity of the belly fllleting knlves 3 and a pair of severing knives 7 at the down~tream end of the gulde track 2 for the severlng of the flllet~ from the bone skeleton ln their tall reglon. A pair of severing knives 6 which are like a gravlng, chisel or planing tool and which are raisable and lowerable for severing through : . ~
,.~
the flesh strips are arranged above the guide track 2 between the back filleting knives 4 and rib knives 5 and connected with control means 8 so as to be driven synchronously with the conveyor.
The method of operation of the filleting machlne is as follows:
A fish, opened at least in its abdominal cavity and degutted, is ~o saddled by its abdominal cavlty on one of the push saddles 9 that lts tail points in the direction of motion of the conveyor 1. When the flsh 18 fed by guide means (not shown) to the belly filleting knlves 3, these produce two lncisions to both side~ of the belly spokes of the bone structure and extendlng from the abdominal cavity end up to th~ end of the abdom~nal cavlty. At the same time, the back filleting knlves 4 also produce lncisions, extendlng from the tail root up to the neck, to both sldes of the back spokes.
After the passage of the tail end part of the flsh and before the abdominal cavlty end of the fish reaches the severing knives 6, these are moved downwardly and cross the path of motion 2 of the flsh. They penetrate by their polnts both the flesh bands not severed by the belly fllleting knives 3 and the back fllletlng knlves 4 and thus connecting the fillets with the spinal column and sever the~e through up to the end of the abdomlnal cavlty. A~ter reaching the abdominal cavity, they are deflected upwardly by the lateral vertebral projections -` ~09141~5 .
and prolong the incisions made in the fish by the back filleting knives 4, onto the upper sides of the lateral vertebral projections. On reaching the rib knlves 5, known per se spreaders or cutting supports, disposed before ~he cutting edges of the rib knive~, steer both the fillets upwardly in the region of the abdominal cavity end, and the rib knives 5 ~ever the flllets off from the lateral vertebral projections and rib8 without their cutting edges penetrating lnto the fillets and producing a depression each time. On reaching the sever1ng knlves 7, the fillets are then severed at their tail root and to both sldes of the back bone.
The above described embodiment of the present lnvention enables fillets to be producéd with a greater ~lesh yield and smoother appearance than hitherto~
Claims (5)
1. A method of filleting fish, comprising the steps of conveying the fish tail forwards and cutting free the fillets by performing belly filleting cuts, back filleting cuts, and rib cuts and severing the fillets thus cut free from the bone skeleton of the fish by means of severing cuts, wherein the fillets, after the performance of the belly filleting cuts and the back filleting cuts, being detached in the region of the abdominal cavity end by severing through a flesh strip connecting the fillets with the vertebrae, and being cut free from the lateral vertebral projections and ribs in the region of the abdominal cavity by means of the rib cuts and thereafter completely severed from the bone skeleton by severing through the flesh strip from the tail root to behind the abdominal cavity.
2. A filleting machine for performing the process as claimed in claim 1, comprising conveyor means to convey fish tail forwards, belly filleting knife means, back filleting knife means, of rib cutting knife means, first severing knife means for severing through flesh of the fish, second severing knife means for severing the fish at the tail root thereof, wherein closed guide means for guiding the backbone of the fish are disposed between said second severing knife means and at least one of said filleting knife means and said back filleting knife means said first severing knife means being disposed between said rib knife means and at least one of said belly filleting knife means and said back filleting knife means and connected with control means actuable synchronously with said conveyor means to dispose said first severing knife means at a position at which they traverse said guide means before the arrival of the abdominal cavity end of the fish.
3. A filleting machine as claimed in claim 2 wherein said first severing knife means is biassed in the conveying direction of the fish.
4. A filleting machine as claimed in claim 2 wherein the conveyor means is provided with spaced entraining elements each adapted to engage and convey a respective fish.
5. A filleting machine as claimed in claim 3 wherein said rib knife means comprises scraping tools.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA328,743A CA1091405A (en) | 1979-05-30 | 1979-05-30 | Method of filleting fish and a filleting machine for performing this method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA328,743A CA1091405A (en) | 1979-05-30 | 1979-05-30 | Method of filleting fish and a filleting machine for performing this method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1091405A true CA1091405A (en) | 1980-12-16 |
Family
ID=4114314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA328,743A Expired CA1091405A (en) | 1979-05-30 | 1979-05-30 | Method of filleting fish and a filleting machine for performing this method |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1091405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899422A (en) * | 1988-10-28 | 1990-02-13 | King James J | Fish processing machine with automatic length responsive cutting control mechanism |
-
1979
- 1979-05-30 CA CA328,743A patent/CA1091405A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899422A (en) * | 1988-10-28 | 1990-02-13 | King James J | Fish processing machine with automatic length responsive cutting control mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU1508949A3 (en) | Method and apparatus for producing skinless fillet from fish belly parts | |
| JPH0130454B2 (en) | ||
| US4336634A (en) | Apparatus for the severing of the fillets from the skeleton of fish | |
| SU847896A3 (en) | Device for making fish filet | |
| US4056866A (en) | Fish processing machines | |
| CA1091405A (en) | Method of filleting fish and a filleting machine for performing this method | |
| US4008509A (en) | Machine for filleting fish | |
| US4151629A (en) | Method and device for gaining fish meat | |
| AU4025985A (en) | Sheet cutter and roller | |
| ES2038880A1 (en) | Method of deboning fish and apparatus for carrying out this method | |
| GB1521799A (en) | Blades and surgical knives | |
| US5037349A (en) | Apparatus and method for cutting meat | |
| US4286355A (en) | Method of filleting fish and a filleting machine for performing this method | |
| ATE80979T1 (en) | METHOD AND APPARATUS FOR PEETING AND PRUNING OLIVES. | |
| GB2046578A (en) | Filleting fish | |
| CA1043058A (en) | Machine for filleting fish | |
| ATE227086T1 (en) | METHOD AND DEVICE FOR DIVIDING A LONG STRIP OR STRAND OF A RUBBER PRODUCT INTO INDIVIDUAL PORTIONS | |
| GB1372060A (en) | Method and device for gaining fish meat | |
| JPS6420919A (en) | Cutting method in band sawing machine | |
| CA1102059A (en) | Process and apparatus for the filleting of fish | |
| GB1288505A (en) | ||
| CA1107016A (en) | Filleting machine for fish | |
| FI87300B (en) | Method for removing the skin from double fillets and device for carrying out this method | |
| EP0765603B1 (en) | Apparatus for filleting the breastpiece of poultry | |
| CA1094267A (en) | Apparatus for processing filleted fish |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |