WO2000035293A1 - Desosseuse - Google Patents

Desosseuse Download PDF

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Publication number
WO2000035293A1
WO2000035293A1 PCT/IB1999/001994 IB9901994W WO0035293A1 WO 2000035293 A1 WO2000035293 A1 WO 2000035293A1 IB 9901994 W IB9901994 W IB 9901994W WO 0035293 A1 WO0035293 A1 WO 0035293A1
Authority
WO
WIPO (PCT)
Prior art keywords
pair
bone
joint
guillotine
pneumatic
Prior art date
Application number
PCT/IB1999/001994
Other languages
English (en)
Inventor
Athol Terence Sclanders
Original Assignee
Athol Terence Sclanders
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Athol Terence Sclanders filed Critical Athol Terence Sclanders
Priority to AU16739/00A priority Critical patent/AU1673900A/en
Publication of WO2000035293A1 publication Critical patent/WO2000035293A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C21/00—Processing poultry
    • A22C21/0069—Deboning poultry or parts of poultry
    • A22C21/0076—Deboning poultry legs and drumsticks

Definitions

  • THIS invention relates to a deboning apparatus, and in particular to a deboning apparatus for deboning chicken joints such as chicken thighs and legs.
  • One type of chicken thigh deboner utilizes an apertured diaphragm formed from a tough rubber material.
  • the femur is forced through the aperture of the diaphragm so that only the femur bone emerges, with the meat being left behind.
  • ⁇ disadvantage of this apparatus is that it is not always effective in removing all of the meat from the bone.
  • deboning apparatus utilizes a pair of nylon worms that rotate towards one another, with the meat being entrapped in the nip between the worms and the rigid bone being discarded.
  • a disadvantage of a deboning apparatus of this type, as well as the prior diaphragm-based apparatus, is that it is difficult to keep regularly clean in accordance with abattoir regulations. -?-
  • a deboning apparatus comprising clamping means for releasably clamping one end of a joint of meat in position, a pair of opposed stripping blades, first actuating means for reciprocally moving the stripping blades between a retracted position and an extended position in which they snugly encircle a bone in the joint adjacent the one end. and second actuating means for reciprocally moving the clamping means and the extended and encircling stripping blades between a proximal position and a distal position so as to cause the meat to be stripped from the other end of the bone.
  • the first actuating means comprise a first pair of opposed actuators to which the stripping blades are connected and the second actuating means comprise a second pair of actuators, with the first pair of actuators being arranged to move transversely relative to the second pair of actuators.
  • the first pair of actuators are mounted to a corresponding pair of reciprocating rams forming part of the second pair of actuators.
  • the clamping means comprises a clamping bracket terminating in a stirrup formation, a retaining plate pivotable between a raised releasing position and a lowered retaining position in which the retaining plate holds the bone captive within the stirrup formation, and a plate actuator for moving the retaining plate between the releasing and retaining positions.
  • the deboning apparatus includes a pneumatic controller comprising a plurality of pneumatic control valves and switches, with the actuating means being pneumatically operated by the pneumatic controller using pneumatic logic.
  • the deboning apparatus includes a hydraulic controller, with the actuating means being hydraulically operated by the hydraulic controller using hydraulic logic.
  • the deboning apparatus includes a guillotine assembly for severing a joint or knuckle of non-clamped end of the bone for facilitating the stripping of meat from the bone.
  • the guillotine assembly includes a guillotine plate, guide means for guiding the plate, guillotine actuating means for reciprocally moving the guillotine plate within the guide means, and triggering means for triggering the guillotine actuating means.
  • a triggering means is conveniently actuable by the joint or knuckle of the non- clamped end of the bone, with the triggering means being adjustable to enable the position at which the knuckle or joint is severed along the bone to be varied.
  • the guillotine is formed with a vee-shaped blade
  • the guide plate is formed with an opposed vee-shaped blade arranged to overlap with the vee- shaped blade of the guide plate during the severing operation.
  • the invention extends to a method of automatically deboning a joint of meat comprising the steps of:
  • the method includes the initial step of:
  • the method includes the subsequent steps of:
  • the method includes the step of repeating steps a) to f) in a subsequent stripping cycle.
  • Figure 1 shows a front view of a chicken thigh deboner of the invention
  • Figure 2 show s a detailed perspective view of the chicken thigh deboner of Figure 1 ;
  • Figures 2 A & 2B show more detailed perspective and exploded views of the chicken thigh deboner of Figure 1 ;
  • Figures 3A to 3E show side and front views of the various steps involved in deboning a chicken thigh
  • Figure 4 shows a pneumatic circuit diagram illustrating the pneumatic circuitry forming part of the chicken thigh deboner of the invention
  • Figure 5 shows a partly cut-away top plan view of a second embodiment of a chicken thigh deboner of the invention incorporating a guillotine assembly
  • Figure 6 shows a more detailed underplan perspective view of the guillotine assembly of Figure 5 in the retracted position
  • Figure 7 shows a top perspective view of part of the guillotine of
  • Figure 8 shows an underplan perspective view of the guillotine of
  • a chicken thigh deboner 10 of the invention includes a stainless steel table 12 from which an upright back panel 14 projects.
  • IJiree pneumatic actuators 16, 18 and 20 are mounted vertically via brackets 22 to the panel 14.
  • Each of the pneumatic actuators are provided with a central reciprocating ram 24 and an outer pair of guide rods 26.
  • Mounting platforms 28. 30 and 32 are carried on the ends of the rams and guide rods of the respective actuators 16. 18 and 20.
  • Upper and lower inner hydraulic actuators 34 and 36 are in turn mounted horizontally to the respective upper and lower laces of the central mounting platform 30.
  • outer pneumatic actuators 38 and 40 are horizontally mounted to downwardly extending flanges 42 forming part oi ' the outer platforms 28 and 32.
  • the pneumatic actuator 36 includes a pneumatic ram 44 to the end of which is bolted a stripping plate 46 terminating in a notched blade 48.
  • the plate 46 travels within a guide track 49 defined by a guide bracket 50 which is screwed to the underside of the platform 30.
  • the other pneumatic actuators 34, 38 and 40 are provided with identical ram, blade and bracket arrangements.
  • the pneumatic actuator 40 is arranged to reciprocate a stripping plate 52 similarly terminating in a notched blade 54.
  • the reciprocating plate 52 moves in opposition to the reciprocating plate 46 between retracted and extended positions.
  • a pair of clamping arms 56 and 58 extend from respective mounting brackets 60 and 62 and terminate in part circular bone-receiving stirrup recesses 64.
  • a horizontal pivot rod 66 carries a pair of overhead clamping or retaining plates 68 and 64.
  • the pivot rod 66 is driven via a central pneumatic actuator 70 which is arranged to pivot the rod 66 so as to move the clamping plate 68 between upper released and lower clamping positions.
  • a central pneumatic actuator 70 which is arranged to pivot the rod 66 so as to move the clamping plate 68 between upper released and lower clamping positions.
  • the pneumatic actuators 36 and 40 are then activated so that the opposed stripping plates or blades 46 and 52 are dm en towards one another to a position in which their respective notches encircle and clamp around the femur just below the stirrup aperture 64, as is clear from Figure 2.
  • the pneumatic actuators 18 and 20 are then activated, causing the rams 24 to extend downwardly, driving the stripping blades along the femur and stripping the meat 78 away from the femur so that only the femur bone 80 is left clamped in position.
  • the pneumatic actuators 36 and 40 are then activated to cause the stripping blades 46 and 52 to retract.
  • the retaining plate 68 is then raised to the Figure 3E position, and the bone 80 is released and discarded.
  • the stripped meat 78 falls through one of a pair of apertures 82 in (lie table top 83 and is collected in a dish 84 below.
  • the thigh deboner is now reach' for the next cycle.
  • FIG. 4 a pneumatic circuit diagram is shown illustrating the manner in which the deboner is operated.
  • a pressurized air source 86 is filtered and regulated by means of a filter and regulator 88.
  • a footswitch 89 is used to control the operation of the deboner.
  • the footswitch controls the flow of air to three five-way two-position valves 90, 92 and 94 and three three-way two- position magnetic valves 96, 98 and 100.
  • the valve 90 controls the operation of the pneumatic actuator 70.
  • the valve 92 in conjunction with the valve 96 controls the operation of the pneumatic actuators 34, 36. 38 and 40.
  • the valve l )4. together with the magnetic valves 98 and 100. control the operation of the three vertically mounted pneumatic actuators 16. 18 and 20.
  • a double thigh deboner of the type illustrated in the above embodiment can debone from 40 to 48 thighs per minute. Naturally, the number of deboning stations can be increased to four or more, with a concomitant increase in processing speed.
  • a guillotine assembly 102 is shown mounted to the underside of the table top 83.
  • the knee joint is simply removed in a semi -automated operation by inserting it through a circular aperture 104 in the table top.
  • a trigger mechanism 105 activates the pneumatically operated guillotine and causes the knee joint to be removed at the correct position, in the manner described below.
  • FIG. 6 illustrates the guillotine assembly 102 in more detail.
  • a two-way pneumatic actuator 106 includes a pneumatic ram 108 terminating in a clevis 1 1 to which a guillotine plate 1 12 is removably affixed by means of a clevis pin 1 1 1.
  • the guillotine plate 1 12 terminates in a vee-shaped blade 113, and is arranged to slide to and fro within side channels 1 14 defined within a base plate 1 16.
  • the side channels 1 14 are defined by a pair of re-entrant flanges 1 18, and a diamond-shaped aperture 120 is formed in the base of the base plate.
  • flic trigger mechanism 105 includes a stirrup-shaped lever 126 terminating in I .-shaped arms 128. the ends of which are mounted pivotably to trunnion blocks 130 which are in turn bolted onto the flanges 1 18.
  • a trigger plate 131 extends from the centre of the stirrup-shaped lever 126 partly into the aperture 120.
  • a sprung shaft assembly 132 is screwed into one of the trunnion blocks 130 and extends through an aperture defined in a platform portion 133 forming part of the stirrup lever 126.
  • the sprung shaft captivates a coil spring 138 between a butterfly nut 139A and an annular plunger 139B which biases the stirrup lever 1 6 into the fully closed position illustrated in Figure 6.
  • the opposite side of the stirrup lever carries a microswitch 140 having a roller contact 141.
  • the roller contact 141 is activated by abutting against the underside of a switch plate 142 which is carried on a shaft 144 having a threaded end which screws into a complementally threaded aperture 145 in the trunnion block 130.
  • the guillotine assembly 102 is operated in the following manner. The operator holds the complete thigh 72 by gripping the hip joint side 72 ⁇ . The exposed knee joint side 72B is passed through the circular aperture 1 04 in the table and into the diamond-shaped aperture 120, where it strikes the trigger plate 131.
  • the stirrup lever 124 is moved inwardly against the biasing action of the coil spring 138 to a point at which the roller contact 141 of the microswitch 140 contacts the underside of the switch plate 142, thereby commencing a forward stroke of the ram 108.
  • the vee-shaped blade 1 13 of the guillotine plate advances rapidly to sever the knee joint from the thigh.
  • the vee-shaped blade 1 13 and the opposed vee-shaped blade 146 defining part of the diamond-shaped aperture 120 in combination conduct a gripping, centering and severing operation in a fraction of a second, with the severed knee joint or knuckle falling into a receptacle (not shown).
  • the operator does not alter his or her grip on the thigh, but merely inserts the hip joint 74 into the stirrup recess 64 in the manner previously described to commence the deboning operation.
  • ITie exact location at which the knee joint is severed from the femur can be adjusted by screwing the strike plate 142 up and down the shaft 144 to alter its height.
  • FIG 8 illustrates the relatively simple manner in which the guillotine assembly 102 can be disassembled or stripped for cleaning purposes.
  • the clevis pin 1 1 1 is removed to release the guillotine plate 112.
  • the strike plate 142 and the sprung shaft assembly 132 are unscrewed from the trunnion blocks, and the stirrup lever 126 is pivoted upwardly on the trunnion blocks to allow complete removal of the guillotine plate 1 12 for cleaning purposes.
  • a pneumatic sub-circuit 148 for controlling the operation of the guillotine assembly 102 includes the roller contact 141 forming part of the microswitch 140, which, together with the magnetic switch 152, control the flow of air to a five-way two-position valve 154 which in turn controls the operation of the pneumatic actuator 106.
  • the magnetic switch 152 is responsive to a signal from the microswitch 140.
  • a major advantage of the chicken thigh deboner of the invention is that it is entirely pneumatically operated, relying on pneumatic rather than electrical or electronic-based logic. As a result, the entire apparatus can be regularly washed and cleaned without danger of wetting electrical apparatus and causing electrical shorts and the like.
  • the various stainless steel components of the apparatus such as the stripping blades and the guides within which they are mounted, can easily be disassembled for further cleaning and maintenance, as is clear from Figure 2B.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Processing Of Meat And Fish (AREA)

Abstract

Cette désosseuse (10) est conçue pour désosser des cuisses de poulet. Un bras de serrage (58) se termine par une formation en étrier (64) destinée à recevoir l'articulation côté hanche (72) de la cuisse (74). Une plaque de retenue aérienne (68) peut pivoter entre une position de libération, dans laquelle elle est surélevée, et une position de rétention, dans laquelle elle est abaissée et serre l'articulation et la maintient en position. Une paire de plaques de décollement (46 et 52) à mouvement de va-et-vient et se terminant par des lames à encoche (47 et 54) sont mobiles entre une position escamotée et une position déployée dans laquelle elles encerclent étroitement le fémur de la cuisse du poulet. Les lames de décollement sont commandées pneumatiquement au moyen d'une première paire d'actionneurs pneumatiques, une seconde paire d'actionneurs pneumatiques étant utilisée pour entraîner les lames de décollement, à l'état déployé, vers le bas, afin de provoquer le décollement de la chair à partir de l'os de la cuisse. Cette désosseuse est entièrement commandée au moyen d'une unité de commande pneumatique mettant en oeuvre une logique pneumatique, par l'intermédiaire de plusieurs soupapes et commutateurs pneumatiques.
PCT/IB1999/001994 1998-12-14 1999-12-14 Desosseuse WO2000035293A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16739/00A AU1673900A (en) 1998-12-14 1999-12-14 A deboning apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA98/11440 1998-12-14
ZA9811440 1998-12-14

Publications (1)

Publication Number Publication Date
WO2000035293A1 true WO2000035293A1 (fr) 2000-06-22

Family

ID=25587460

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1999/001994 WO2000035293A1 (fr) 1998-12-14 1999-12-14 Desosseuse

Country Status (2)

Country Link
AU (1) AU1673900A (fr)
WO (1) WO2000035293A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672000A (en) * 1970-08-31 1972-06-27 Victor F Weaver Inc Machine to de-bone chicken thighs
DE2227369A1 (de) * 1971-07-16 1973-01-25 Claudio Rovelli Vorrichtung zum automatischen abloesen von knochen aus fleisch, insbesondere aus schinken
US4327463A (en) * 1980-10-10 1982-05-04 Victor F. Weaver, Inc. Single station anatomical section de-boning machine
US4446600A (en) * 1982-05-17 1984-05-08 Hooley Eldon R Machine for stripping meat from fowl leg and thigh bones
US4495675A (en) * 1982-04-12 1985-01-29 Hill Carl J Method and apparatus for removing meat from the knuckled end of a bone
EP0442554A1 (fr) * 1990-01-30 1991-08-21 Stork Pmt B.V. Procédé et dispositif pour effectuer une opération de coupe précise près de l'articulation du genou d'une patte d'un animal abattu
EP0465258A1 (fr) * 1990-07-05 1992-01-08 Sterling Manufacturing Company Inc. Dispositif pour désosser

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672000A (en) * 1970-08-31 1972-06-27 Victor F Weaver Inc Machine to de-bone chicken thighs
DE2227369A1 (de) * 1971-07-16 1973-01-25 Claudio Rovelli Vorrichtung zum automatischen abloesen von knochen aus fleisch, insbesondere aus schinken
US4327463A (en) * 1980-10-10 1982-05-04 Victor F. Weaver, Inc. Single station anatomical section de-boning machine
US4495675A (en) * 1982-04-12 1985-01-29 Hill Carl J Method and apparatus for removing meat from the knuckled end of a bone
US4446600A (en) * 1982-05-17 1984-05-08 Hooley Eldon R Machine for stripping meat from fowl leg and thigh bones
EP0442554A1 (fr) * 1990-01-30 1991-08-21 Stork Pmt B.V. Procédé et dispositif pour effectuer une opération de coupe précise près de l'articulation du genou d'une patte d'un animal abattu
EP0465258A1 (fr) * 1990-07-05 1992-01-08 Sterling Manufacturing Company Inc. Dispositif pour désosser

Also Published As

Publication number Publication date
AU1673900A (en) 2000-07-03

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