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GB2082967A - A machine for portioning meat - Google Patents

A machine for portioning meat Download PDF

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Publication number
GB2082967A
GB2082967A GB8028634A GB8028634A GB2082967A GB 2082967 A GB2082967 A GB 2082967A GB 8028634 A GB8028634 A GB 8028634A GB 8028634 A GB8028634 A GB 8028634A GB 2082967 A GB2082967 A GB 2082967A
Authority
GB
United Kingdom
Prior art keywords
meat
bandsaw
depth stop
holder
path
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.)
Granted
Application number
GB8028634A
Other versions
GB2082967B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEW Engineering Co Ltd
Original Assignee
AEW Engineering Co Ltd
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 AEW Engineering Co Ltd filed Critical AEW Engineering Co Ltd
Priority to GB8028634A priority Critical patent/GB2082967B/en
Priority to JP18269580A priority patent/JPS5750840A/en
Priority to DE8181303842T priority patent/DE3170132D1/en
Priority to AT81303842T priority patent/ATE12905T1/en
Priority to EP19810303842 priority patent/EP0047603B1/en
Priority to US06/297,747 priority patent/US4420997A/en
Priority to CA000385075A priority patent/CA1171764A/en
Priority to AU74903/81A priority patent/AU539857B2/en
Priority to NZ198261A priority patent/NZ198261A/en
Publication of GB2082967A publication Critical patent/GB2082967A/en
Application granted granted Critical
Publication of GB2082967B publication Critical patent/GB2082967B/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0641Arrangements for feeding or delivering work of other than sheet, web, or filamentary form using chutes, hoppers, magazines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/46Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having an endless band-knife or the like

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Meat And Fish (AREA)

Abstract

A rotatable meat containing drum (32) moves the meat in a circular path intersecting the cutting flight of a bandsaw (20), the meat sliding around on a table (30) on to a depth stop in the form of a flush conveyor which assists transport of the meat through the cutting station and to a downstream separating station at which a deflector (68) engages the cut slice of meat below the level of the bandsaw to push said cut slice out from under the main joint, so that the said slice is further transported by the conveyor to an outlet while the main joint is retained by the drum and drops down back on to the table. <IMAGE>

Description

SPECIFICATION Apparatus for portioning meat Field of the invention This invention relates to apparatus for portioning meat and like comestible articles.
Background to the Invention In the preparation of meat for consumption, it is usual to separate the carcass into a number of primal cuts and subsequently divide the primal cuts into portions. This portioning has traditionally been effected by hand using knives, saws and cleavers, but in recent years attention has been directed to improving the productivity of the portioning operation in mass production meat processing.
Prior Art Automatic machines are known in which a primal cut resting against a stop is moved in a rotary path into contact with a powered rotating cleaving blade. The severed portion is removed, e.g. by gravity, and the primal cut advanced against the stop for the process to-be repeated. An example of such a machine is shown in British Patent No. 1,057,052. Such machines do not give an entirely satisfactory product. The cleaving blade is thicker in its centre than at its edge, and this produces a curved portion. Secondly, when forming chops and similar "bone-in" portions, the cleaver tends to smash the bone, causing bone fragments to be found in the meat. Both of these factors are unpopular with consumers.
It is also known to make use of a conventional bandsaw (i.e. with a horizontal worktable and a blade band having a vertical operative portion) in cutting chops and the like, the operator manoeuvring the primal cut to and fro onto the blade band. This is dangerous for the operator since it is impossible to fence the blade, and the rate of production is not very high.
We have therefore already proposed an improved apparatus for portioning meat which comprises a bandsaw arranged with a horizontal cutting flight, a meat holder positioned above said flight for rotation about a vertical axis, the meat holder being adapted to hold meat to be portioned substantially vertically at a position spaced from said axis, means for rotating the meat holder about said axis, and a depth stop below said flight, whereby the meat to be portioned is fed across said flight while resting on the depth stop by rotation of the meat holder. In this apparatus, the meat to be portioned is siidingly rotated over a table to an aperture therein through which the meat drops on to the depth stop, which is mounted in a stationary position beneath said aperture.As the meat is driven across the aperture, a slice immediately above the depth stop is cut off by the bandsaw and is immediately separated from the main portion of meat rotating in the meat holder to enable said main meat portion to return to the table at the end of the aperture. The cut meat portion is fed out from below the table to an outlet chute.
Object of the Invention With the proposed machine, it has been found that occasionally a cut portion of meat can stick between the bandsaw and the depth stop, or stick to the main portion of meat which is to be returned to the table. This results in jamming of the machine, with possible damage to said machine and wastage of meat, and is especially liable to happen when the machine is operated at high speed, which is desirable not only to maximise production but also for maximum cutting efficiency of the bandsaw. It is therefore an object of the present invention to provide improved apparatus for portioning meat which substantially avoids the above-described disadvantage of the previously proposed machine.
The Invention According to the invention, there is provided apparatus for portioning meat, comprising a bandsaw arranged with a generally horizontal cutting flight, a meat holder, driving means for moving said meat holder, thereby in use to move the meat to be portioned in a path intersecting the cutting flight at a cutting station, a depth stop below the cutting flight for supporting such meat during its movement through the cutting station, means for moving said depth stop in a path of movement through the cutting station which corresponds to the path of movement of the meat being moved by the meat holder, said two movements being substantially synchronised, and separating means at a separating station downstream of the cutting station for separating a cut portion of meat for transport on the depth stop from a remaining portion of meat retained by the meat holder.
Thus, in accordance with the invention, risk of jamming is minimised by moving the cut meat portion in synchronism with the remaining meat portion away from the bandsaw, and splitting off the cut meat portion at a point downstream of the bandsaw.
Further Features of the Invention Preferably, in order to assist the action of the separating means, the path of movement of the depth stop diverges from the path of movement of the remaining portion of the meat in the region of the separating station.
The meat holder is preferably driven to move the meat in a closed path which returns the remaining portion thereof from the separating station to the cutting station. Thus, in a practical embodiment, the meat holder is mounted to rotate about a generally vertical axis to one side of the bandsaw, whereby the meat to be portioned is driven through the cutting station in a circular path. In this machine, the depth stop moves at the cutting station in a circular path of movement corresponding to that of the meat and downstream of the cutting station diverges from said circular path in an arc of increased radius.
Conveniently, in its return movement from a point adjacent the separating station to a point adjacent the cutting station, the meat retained by the meat holder is supported on a stationary table. In the preferred machine, the depth stop is substantially flush with the surface of the table.
It is, of course, desirable to be able to vary the thickness of the portion of meat being cut.
Preferably, therefore, the thickness of the cut meat portion is variable by adjustment of the relative levels of a bandsaw assembly and a meat holder and depth stop assembly. in the preferred machine, this means of adjustment enables the depth stop to be maintained in flush relationship with the table.
The separating means preferably comprises a deflector positioned just below the level of the bandsaw cutting flight at the separating station.
Conveniently, this deflector may have a ramp-like upper surface down which the remaining portion of the meat can slide, within the confines of the meat holder, laterally relative to the path of the moving depth stop. It is desirable for the deflector to be yieldable under pressure from the cut meat portion, and a detector may be provided to detect yielding of the deflector beyond a predetermined amount and thereby provide an output for power cut-off or alarm purposes. The detector will so yield, of course, if the cut portion of meat will not readily split off from the remaining meat portion, for example because a "rough" cut has occurred due to bone breakage or splintering or the like.The required yielding movement of the defelector may be afforded by a biassing spring, which may enable the deflector to move downwardly out of the path of the meat or swing inwardly about a vertical pivot axis out of the path of the meat.
To enable the delector to operate efficiently at differing thicknesses of cut, it is preferably mounted in fixed relationship to the bandsaw assembly. Alternatively, interchangeable deflectors of differing depths may be provided.
The movable depth stop preferably comprises an endless conveyor, which may conveniently take the form of a slatted supporting surface adapted to conform to a curved path of movement in the plane of said surface, said slatted surface being driven from below by means of a flexible chain. In the preferred machine, the table has an elongated aperture accommodating the top run of the conveyor, the longitudinal edges of the table aperture having depending lipped flanges which are engaged by grooves in the end edges of the conveyor slats, whereby the top run of the conveyor is accurately guided along the table aperture flush with the surface of said table.
A guard will be provided for the bandsaw and meat holder. Preferably said guard will have an openable panel to permit loading of the meat holder, and a interlock means being provided to interrupt the driven movement of the meat holder and depth stop when said panel is opened. A further interlock may be provided to interrupt the drive to the meat holder, depth stop and the bandsaw if any other part of the guard is removed.
In addition, a sensor is preferably provided for detecting a defective bandsaw and acting when operated to interrupt the drive to the meat holder, depth stop and the bandsaw.
Two meat holder, depth stop and bandsaw units may be accommodated within a single housing, utilising a common drive, at least in part, to the two bandsaws. The arrangement will be such that the swarf or meat dust generated at the respective cutting stations is thrown clear of both units (i.e. neither unit is positioned downstream of the other unit in the path of the ejected swarf), conveniently towards a downstream site at which a collecting bin may be located.
In the Accompanying Drawings Figure 1 is a diagrammatic perspective view of one embodiment of apparatus in accordance with the invention, with the guard cut away; Figure 2 is a diagrammatic plan view of the apparatus, with the guard removed; and Figure 3 is a diagrammatic vertical crosssectional view of the apparatus, again with the guard removed.
Description of Embodiment The apparatus comprises a base housing 10 having control switches 12 and indicators 14, surmounted by a guard housing 16 including an access panel 1 8 for loading. Other sections (not shown) of the guard housing 1 16 will be removable to facilitate servicing and maintenance.
As shown in Figure 3, a bandsaw 20 having a cutting flight 22 is mounted on a frame 24 within the base housing 10. The bandsaw is driven by an electric motor 26 and belt drive 28. The cutting flight 22 of the bandsaw is disposed at a level above the top surface of the base housing 10, which top surface constitutes a horizontal table 30.
A meat cylinder assembly 32 is mounted over the table 30. This assembly has a vertical central shaft 34 on which is fixedly mounted a meat holder comprising a sleeve 36 from which project radial plate members 38 bent to form circumferential wings 40. The shaft 34 is drivable in rotation about its vertical axis by means of an electric motor 42 and transmission 44. It is to be noted that the lower edges of the meat holder formed by the elements 36, 38, 40 lie in a plane above the level of the cutting flight 22 of the bandsaw 20. Thus, in use, the meat cylinder assembly 32 is driven in rotation so that the meat holder rotates above the table 30, whereby a joint of frozen meat 46 (see Figure 2) retained in each of the compartments of the meat holder is moved in a circular path, with the underside of the meat sliding on the table 30. This circular path of the meat 46 intersects the cutting flight 22 of the bandsaw 20, whereby a slice of meat will be cut off at the bottom of the joint, the thickness of the cut slice corresponding to the height of the cutting flight 22 above the table 30. Means (not shown) are provided for varying the height of the bandsaw frame 24 relative to the table 30, thereby to adjust the thickness of the cut slice of meat.
In association with the path of movement of the meat in the meat cylinder assembly 32, the table 30 is formed with an elongate curved aperture 48 starting from just before the point where the meat is cut (the cutting station), extending in a circularly curved path matching that of the meat to a point beyond the cutting station, and then diverging from the path of the meat retained by the meat cylinder assembly 32, in an arc of increased radius, to the entrance 50 to an outlet chute 52.
This aperture 48 in the table 30 is closed by a conveyor 54 flush with said table 30. This cpnveyor 54 in effect constitutes a moving depth stop for the meat. In Figure 2, the starting point of the conveyor is referenced 56, its curved portion through the cutting station is referenced 58, and its diverging portion of greater radius is referenced 60. In practice, the conveyor is of the slatted endless loop type, the individual slats 62 being linked in a manner which permits the conveyor to conform to the curved path of movement above described. The slats 62 are coupled to a driven chain 64 (see Figure 3), having a drive transmission 66 connected to the output of the motor 42 driving the meat cylinder assembly 32.
Such a common drive for the meat cylinder assembly 32 and the moving depth stop 54 is not essential; however, it facilitates the essential requirement for the moving depth stop 54 to be driven in synchronism with the meat 46 through the cutting station, so that there is no relative movement between the underside of said meat and the depth stop. Thus, after a meat slice has been cut, the meat continues to move away from the cutting station with the remainder of the joint supported on the cut slice and without any relative movement therebetween tending to separate or split off the cut slice.
Downstream of the cutting station, a deflector or plough 68 is provided to separate or split off the cut meat slice. The separating station thus defined is positioned adjacent the point of the conveyor 54 where the latter starts to diverge from the path of movement of the meat retained by the meat cylinder assembly 32 into an arc of greater radius, i.e. generally at the junction of the conveyor portions 58 and 60.
The plough 68 is mounted to pivot, under the pressure of the cut meat slice, about a verticle axle 70, against the biassing action of a strong coil spring indicated at 72. Assuming the slice has been properly cut, it is pushed by the plough 68 outwardly of the path of movement of.the remainder of the joint, to maintain the transport of the cut slice on the conveyr, which latter thus also serves as a take-off conveyor feeding the outlet chute 52. The plough 68 passes under the main meat joint and has its upper surface contoured generally in ramp-like form, as indicated at 74, to assist the downward and inward movement of the main meat joint, within the confines of the relevant compartment of the meat cylinder assembly 32, back on to the table 30.Thus, the meat cylinder assembly 32 retains the main joint and moves it around in a circular path back to the cutting station, ready for a further slice to be cut from the bottom of the joint. The depth of the plough 68 is such, as indicated in Figure 3, that it only presses on the cut slice of meat. It is, therefore, located at the level of the space between the bandsaw cutting flight 22 and the table 30. To enable the same plough 68 to deal with cut meat slices of differing thicknesses, the plough 68 and its mounting means 70, 72 are preferably carried by the bandsaw frame 24 to he adjustable therewith relative to the table 30.
In connection with the conveyor 54, although not shown in the drawings, it should be mentioned that the elongate aperture 48 in the table 30 has depending lipped flanges along its longitudinal edges, which lipped flanges are engaged by grooves or slots in the end edges of the conveyor slats, thereby both to ensure accurate guiding of the top run of the conveyor 54 along the required path and to ensure a flush relationship with the table 30.
Loading of meat into the meat cylinder assembly 32 is effected through the panel 18 in the guard housing 1 6. The removal of this panel 1 8 automatically brakes the assembly 32 and conveyor 54 (while leaving the bandsaw running normally), thereby to enable the assembly 32 to be indexed round while successive compartments (which may number more than three depending on the nature of the primal cuts or joints of meat to be sliced) are loaded. Indexing can be effected manually or automatically. In addition, a further interlock may serve to cut off the power to the machine if any other section of the guard housing 1 6 is removed, while a bandsaw sensor may raise an audible or visual alarm responsive to stretching or breakage of the bandsaw.
Finally, two units comprising meat cylinder assembly, bandsaw and moving depth stop may be contained within a single composite housing, the relative positioning of the units side-by-side being such that swarf or cut meat dust is thrown clear of both units to a downstream collecting bin.

Claims (19)

1. Apparatus for portioning meat, comprising a bandsaw arranged with a generally horizontal cutting flight, a meat holder, driving means for moving said meat holder, thereby in use to move the meat to be portioned in a path intersecting the cutting flight at a cutting station, a depth stop below the cutting flight for supporting such meat during its movement through the cutting station, means for moving said depth stop in a path of movement through the cutting station which corresponds to the path of movement of the meat being moved by the meat holder, said two movements being substantially synchronised, and separating means at a separating station downstream of the cutting station for separating a cut portion of meat for transport on the depth stop from a remaining portion of meat retained by the meat holder.
2. Apparatus according to claim 1, wherein the path of movement of the depth stop diverges from the path of movement of the remaining portion of the meat in the region of the separating station.
3. Apparatus according to claim 1 or claim 2 wherein the meat holder is driven to move the meat in closed path which returns the remaining portion thereof from the separating station to the cutting station.
4. Apparatus according to claim 3, wherein the meat holder is mounted to rotate about a generally vertical axis to one side of the bandsaw, whereby the meat to be portioned is driven through the cutting station in a circular path.
5. Apparatus according to claim 4 when appendant to claim 2, wherein the depth stop moves at the cutting station in a circular path of movement corresponding to that of the meat and downstream of the cutting station diverges from said circular path in an arc of increased radius.
6. Apparatus according to any of claims 3 to 5, wherein in its return movement from a point adjacent the separating station to a point adjacent the cutting station, the meat retained by the meat holder is supported on a stationary table.
7. Apparatus according to claim 6, wherein the surface of the movable depth stop is substantially flush with the surface of the table.
8. Apparatus according to any of claims 1 to 7, wherein the thickness of the cut meat portion is variable by adjustment of the relative levels of a bandsaw assembly and a meat holder and depth stop assembly.
9. Apparatus according to any of claims 1 to 8, wherein the separating means comprises a deflector positioned just below the level of the bandsaw cutting flight at the separating station.
1 0. Apparatus according to claim 9, wherein the deflector has a ramp-like upper surface down which the remaining portion of the meat can slide, within the confines of the meat holder, laterally relative to the path of the moving depth stop.
11. Apparatus according to claim 9 or claim 10, wherein the deflector is spring loaded to yield under pressure from the cut meat portion.
12. Apparatus according to claim 11, wherein a detector is provided to detect yielding of the deflector beyond a predetermined amount and thereby provide an output for power cut-off or alarm purposes.
13. Apparatus according to any of claims 9 to 12, when appendant to claim 8, wherein the deflector is mounted in fixed relationship to the bandsaw assembly.
14. Apparatus according to any one of claims 1 to 13, wherein the movable depth stop comprises an endless conveyor.
1 5. Apparatus according to claim 14, wherein the endless conveyor comprises a slatted supporting surface adapted to conform to a curved path of movement In the plane of said surface, said slatted surface being driven from below by means of a flexible chain.
1 6. Apparatus according to any of claims 1 to 1 5, including a guard for the bandsaw and meat holder, said guard having an openable panel to permit loading of the meat holder, and an interlock means being provided to interrupt the driven movement of the meat holder and depth stop when said panel is opened.
1 7. Apparatus according to claim 1 6, wherein a further interlock is provided to interrupt the drive to the meat holder, depth stop and bandsaw if any other part of the guard is removed.
1 8. Apparatus according to any of claims 1 to 17, including a sensor for detecting a defective bandsaw and acting when operated to interrupt the drive to the meat holder, depth stop and the bandsaw.
19. Apparatus for portioning meat substantially as hereinbefore described with reference to the accompanying drawings.
GB8028634A 1980-09-04 1980-09-04 A machine for portioning meat Expired GB2082967B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB8028634A GB2082967B (en) 1980-09-04 1980-09-04 A machine for portioning meat
JP18269580A JPS5750840A (en) 1980-09-04 1980-12-22 Edible meat dividing apparatus
AT81303842T ATE12905T1 (en) 1980-09-04 1981-08-24 SLICING MACHINE FOR MEAT.
EP19810303842 EP0047603B1 (en) 1980-09-04 1981-08-24 Apparatus for portioning meat
DE8181303842T DE3170132D1 (en) 1980-09-04 1981-08-24 Apparatus for portioning meat
US06/297,747 US4420997A (en) 1980-09-04 1981-08-31 Apparatus for portioning meat
CA000385075A CA1171764A (en) 1980-09-04 1981-09-02 Apparatus for portioning meat
AU74903/81A AU539857B2 (en) 1980-09-04 1981-09-03 Portioning meat on horizontal bandsaw
NZ198261A NZ198261A (en) 1980-09-04 1981-09-03 Apparatus for portioning meat: bandsaw with horizontal cutting flight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8028634A GB2082967B (en) 1980-09-04 1980-09-04 A machine for portioning meat

Publications (2)

Publication Number Publication Date
GB2082967A true GB2082967A (en) 1982-03-17
GB2082967B GB2082967B (en) 1984-07-11

Family

ID=10515863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8028634A Expired GB2082967B (en) 1980-09-04 1980-09-04 A machine for portioning meat

Country Status (2)

Country Link
JP (1) JPS5750840A (en)
GB (1) GB2082967B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534548A (en) * 1982-11-12 1985-08-13 Fernand Hanau Bacon slicing machine
WO1989003180A1 (en) * 1987-10-08 1989-04-20 Aew Engineering Co Limited Sizing and cutting apparatus
WO1993008966A1 (en) * 1991-11-01 1993-05-13 Grønkjær Maskinværksted Saw, in particular for use when cutting carcases such as porkers and cattle
CN109362852A (en) * 2018-11-29 2019-02-22 福建省亚明食品有限公司 A kind of automatic bone sawing machine of interval clamped-in style
CN115462406A (en) * 2022-08-30 2022-12-13 青岛建华食品机械制造有限公司 Pig carcass intelligent cutting operation table

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534548A (en) * 1982-11-12 1985-08-13 Fernand Hanau Bacon slicing machine
WO1989003180A1 (en) * 1987-10-08 1989-04-20 Aew Engineering Co Limited Sizing and cutting apparatus
GB2231305A (en) * 1987-10-08 1990-11-14 Aew Eng Co Ltd Sizing and cutting apparatus
GB2231305B (en) * 1987-10-08 1991-08-21 Aew Eng Co Ltd Sizing and cutting apparatus
WO1993008966A1 (en) * 1991-11-01 1993-05-13 Grønkjær Maskinværksted Saw, in particular for use when cutting carcases such as porkers and cattle
CN109362852A (en) * 2018-11-29 2019-02-22 福建省亚明食品有限公司 A kind of automatic bone sawing machine of interval clamped-in style
CN115462406A (en) * 2022-08-30 2022-12-13 青岛建华食品机械制造有限公司 Pig carcass intelligent cutting operation table
CN115462406B (en) * 2022-08-30 2023-06-23 青岛建华食品机械制造有限公司 Intelligent pig carcass segmentation operation table

Also Published As

Publication number Publication date
JPS6262129B2 (en) 1987-12-24
JPS5750840A (en) 1982-03-25
GB2082967B (en) 1984-07-11

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