Butchering – Viscera processing – Venting or opening preparatory to eviscerating
Patent
1993-11-03
1995-05-30
Little, Willis
Butchering
Viscera processing
Venting or opening preparatory to eviscerating
452120, A22B 500
Patent
active
054197384
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a method of cutting free and removing the rectum of a carcass of a slaughtered animal, preferably a pig hanging on the hind legs with the head downwards, whereby the rectum is cut free by means of a rotating tubular knife being moved into the carcass from the back substantially coaxially with the center line of the rectum while being guided by means of a pin inserted in the rectum after being cut free, the rectum is retained by the knife and, thereby, pulled out of the carcass. The invention also relates to an apparatus for carrying out the above method.
BACKGROUND OF THE INVENTION
It is known, from DK-PS No. 156,808, to cut free the rectum, the so-called fatty end, of a carcass of a slaughtered animal by means of a rotating tubular drill or a rotating tubular knife, where the knife is placed opposite the rectum of the carcass in such a manner that the axis of rotation of the knife is placed in extension of the center line of the rectum and the spine of the carcass. Subsequently, the rotating drilling pipe is moved forward. The movement by the drill is guided by a pin placed in the tubular drill and inserted in the anus. According to DK-PS No. 156,808, the drill is removed after the cutting procedure.
Attempts at pulling out the rectum in extension of the center line thereof are also known, for example, DK-PS No. 129,495, in the rectum is retained outside the animal on the back of the carcass while the remaining intestinal portions are cut free. A condition for pulling out the rectum in extension of its center line is that the rectum is so resilient that it can be kept intact outside the carcass. It turned out, however, that the resilience of the rectum varies much from animal to animal, especially in connection with pigs. As a result, the rupture of the rectum often arises, particularly with sows.
Both when the rectum is left inside the carcass after the cutting procedure and when attempts are made at pulling out the rectum whereby the rectum ruptures, a risk exists of the visceral contents sieving out into the meat and thereby contaminating the meat. Contamination caused by sieving visceral contents in the latter process turned out to present severe problems of bacteria, such as Salmonella and Yersenia, in connection with meat from the bacon factories. Accordingly, the importance of avoiding in any possible way a sieving of visceral contents is recognized. The rectum cut free cannot therefore be left free in the carcass after the cutting free procedure. Nor should rupture of the rectum be allowed during attempts to pull it backwards relative to the hind part of the carcass and retain it in the drill until the remaining portion of the intestinal portions have been cut free. Although the remaining intestinal portions are cut free without causing any sieving of the visceral contents, a risk exists that some of the visceral contents nevertheless escape in connection with releasing the rectum from the drill.
SUMMARY OF THE INVENTION
Accordingly, it is the object of the invention to provide a method that, in a highly reliable manner, avoids all allowing contaminating visceral contents to escape during the slaughtering procedure.
The method according to the invention is characterized in that the rectum cut free is pulled out of the carcass in a direction substantially perpendicular to the length axis of the carcass towards the ventral side of the carcass while the ham is cut in two, in order to allow the rectum to be pulled forwards onto the ventral side. The rectum is subsequently left hanging downwardly over a side of a protecting shield facing away from the carcass.
This method avoids subjecting the rectum to a tension, which it cannot often stand up. In addition, the rectum is carried downwardly and left on a location where the visceral contents cannot come into contact with the carcass or the slaughterman. During the pulling out movement, the attachments usually resisting the pulling out of the rectum in a rearward direction are easily torn loose witho
REFERENCES:
patent: 4087886 (1978-05-01), Aubert
patent: 4564977 (1986-01-01), Scheier et al.
patent: 5041053 (1991-08-01), Ellis et al.
patent: 5112272 (1992-05-01), Andersen
patent: 5120266 (1992-06-01), Aubert
patent: 5123871 (1992-06-01), van den Nieuwelarr et al.
patent: 5141471 (1992-08-01), Bekkers
patent: 5199922 (1993-04-01), Korenberg et al.
Andersen Borge C.
Lysbo Bettina L.
Chickmatic Aps v/Borge Christian Andersen
Little Willis
Pollock Vande Sande & Priddy
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