Butchering – Slaughtering – Sticking
Patent
1991-11-22
1993-10-05
Little, Willis
Butchering
Slaughtering
Sticking
452 67, A22B 504
Patent
active
052500047
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device for withdrawing blood from slaughter animals transported on a conveyor serially past a sticking station. The device has a carousel which is disposed at the sticking station and includes a body, a lower frame member and an upper frame member, said frame members being synchronously rotatable on a verticle shaft of said body, a number of collecting vessels mounted on the lower frame member around said vertical shaft, a number of hollow knives corresponding to the number of collecting vessels and suspendible around the vertical shaft each in a holder on said upper frame member, and a hose extending between each hollow knife and the associated collecting vessel for conducting blood from the hollow knife to the collecting vessel.
Today, the slaughtering of animals in slaughterhouses demands high efficiency, hygienic conditions and adequate control of the slaughtered animals. Withdrawing blood from the animals for use in the manufacture of foods is part of the activities in a slaughterhouse. The demands mentioned above are of course also placed on this activity.
When extracting blood from animals, the extracted blood coagulates within a very short time. To prevent this, an anticoagulant is added. The anticoagulant must be added in an amount proportional to the amount of extracted blood. Too low a dose will not prevent coagulation, and too high a dose means that the limit values according to current food legislation may be exceeded.
To comply with hygienic standards, the withdrawal of blood for food production purposes requires the insertion of a probe-like object provided with a knife blade, a so-called hollow knife, in the stunned or anaesthetised animal. Perforating the aorta and/or major blood vessels results in a debleeding which makes the animal die within a short time. To comply with hygienic standards, the blood withdrawn by means of a hollow knife must be conducted in a close system, such as a hose, to a vessel provided with a cover, e.g. of the carousel type. This makes it more difficult for the sticker to check visually that a sufficient amount of blood debleeds to ensure that the anaesthetised animal will not become conscious before dying.
To provide rational and hygienically acceptable extraction of blood for food production purposes, sticking or debleeding carousels of different designs have been devised and patented. However, because of technical deficiencies and inadequate compliance with veterinary requirements, these installations have been put into practice to a limited extent only.
DE 821,467 and 870,957, and U.S. Pat. No. 3,649,996 describe carousels of this type. The arrangements described in these documents are all integrated in the slaughtering line by providing a loop in the slaughtering line, inside of which the sticking carousel is disposed. The animals are transported hanging from a conveyor, and carriers are provided at the top of the carousel in order, during the rotation of the carousel, to engage the hooks on which the animals are hanging. Blood collecting vessels are arranged at the lower part of the carousel and are each connected to a hollow knife.
One drawback of the known arrangements is that they cannot be used for slaughter animals which are lying. Another drawback is that the slaughtering line must be modified to provide said loop. Thus, great efforts are needed for shifting the carousel to another slaughtering line or to another location on the slaughtering line. Finally, the known constructions have no means for automatically washing or cleaning the hollow knife and the blood collecting vessels.
The primary object of the present invention is to provide a fully automatic sticking carousel which is able in a highly efficient manner to comply with today's requirements in respect of yield and hygienic standards when extracting blood for food production purposes and which can be adapted to different slaughtering lines without any modification thereof, and which, finally, can be used for both lying and hanging slaughter animals.
A second
REFERENCES:
patent: 3292206 (1966-12-01), Rizzi
patent: 3649996 (1972-03-01), Marti
patent: 3947919 (1976-04-01), Ekdahl
patent: 4617700 (1986-10-01), Ba'Torfalui et al.
Anitec-John Sjoberg AB
Little Willis
LandOfFree
Device for withdrawing blood from slaughter animals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for withdrawing blood from slaughter animals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for withdrawing blood from slaughter animals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-999907