Butchering – Modelling – Visceral cavity closure
Patent
1994-08-29
1995-12-12
Little, Willis
Butchering
Modelling
Visceral cavity closure
A23B 500
Patent
active
054744920
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The object of the present invention is a method and a device for cutting out and plugging the anal orifice of slaughtered animals.
The method and device are suitable for use in any slaughtering facility, particularly in high-throughput abattoirs.
2. Discussion of Background Information
To date, anal cutting devices, such as those described in U.S. Pat. No. 3,921,255, are constituted of a cylindrical cutter closed at the rear end, which does not allow proper functioning in the automatic mode because of tails which gather in the inside and pile up at the bottom since there is no outlet.
In addition, the European Community Veterinary Hygiene Department requires that the anal orifice of slaughtered animals be obstructed in order to prevent the materials contained in the intestine from spilling on or into the carcass. The cutting tools mentioned hereinabove do not lend themselves well for carrying out such an operation, which is usually confined to the manual positioning of an obstructor which, especially in automated facilities, requires an increase in the quantity of necessary personnel, and consequently increases production costs.
WO 90/06685 by the same inventor describes an automatic system for distributing and positioning hollow and conically-shaped anal obstructors made of plastic, positioned by the centering mandrel of the tool for cutting out the rectum. This system has proven to be incapable of reaching the working speeds of modern high performance facilities.
Known anal obstructors, regardless of the positioning method used, are not absolutely impermeable and it happens that their fixing does not withstand the subsequent handling that the carcasses are subject to.
SUMMARY OF THE INVENTION
The method according to the present invention overcomes all these disadvantages. Indeed, it not only enables immediate removal of tail pieces being introduced into the cutter, thus eliminating the previously necessary stopping of the operation of the facility to periodically empty the cutter, but also enables automatically proceeding to plug the anal orifice at very high through-puts, while ensuring total impermeability and eliminating the risk of accidental opening.
The method according to the invention includes first cutting out the rectum of the animal by means of a cylindrical cutter mounted around the centering mandrel and provided with side openings enabling immediate removal of any waste matter that becomes stuck within the cutter, and injecting ground fat or similar material into the anus with a pressuring device controlled by automation equipment of the facility, the device being connected via a flexible duct to an inner channel of the centering mandrel for the tool for cutting out the rectum.
BRIEF DESCRIPTION OF THE DRAWINGS
In the annexed drawings, provided as a non-limiting example of one of the embodiments of the object of the invention:
FIG. 1 represents a slaughtering line station equipped with a rectum cutting tool having a cylindrical cutter with side openings and a fat injection device,
FIG. 2 is an enlarged side view of the cutter mounted on the centering mandrel with the waste removal outlets open,
FIG. 3 show the cutter from a top view with the openings closed, and
FIG. 4 is a transverse section along arrows A--A of FIG. 3
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The device, FIG. 1, is composed of a grinder 1, discharging by means of an non-return valve 2 into a pressurizing chamber 3 whose outlet 4 is controlled by a motorized valve 5.
A flexible duct 6 connects the valve to an axial inner channel 7 provided for this purpose in centering mandrel 9 of the tool for cutting out 8 the rectum, and abutting on the end of the tip of this mandrel.
Grinder 1 is advantageously constituted of a screw 10 rotating in a sheath, driven by an electric motor 11 and fed by a hopper 12, the sheath ending at non-return valve 2 mentioned above.
Pressurizing chamber 3 can be shaped like a cylinder, closed by a moveable piston 13, on which a ca
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patent: 5114380 (1992-05-01), Larsen
patent: 5120266 (1992-06-01), Aubert
patent: 5120267 (1992-06-01), Neal et al.
patent: 5181878 (1993-01-01), Bekkers
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International Search Report and Annex.
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