Butchering – Deboning
Patent
1995-06-26
1996-06-11
Little, Willis
Butchering
Deboning
452 83, A22C 2516
Patent
active
055251013
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/SE93/00955 filed Oct. 10, 1993, now WO 94/10848, published May 26, 1994.
The present invention relates to a device for removing bones from meat, noteably from fish and in particular it relates to removing so called pin bones or belly bones from fish meat, e.g. from divided fresh or smoked fish filets.
PRIOR ART
A device of the above mentioned type is previously known from the Swedish patent with the publication number SE-467904.
This known device comprises a housing in which a rotateable, cylindrical element is provided. The housing has an opening which exposes part of the envelope surface of the cylinder. The cylinder which is provided with a plurality of holes for receiving fish bones to be removed, is rotated in the housing, and when the device is moved across the surface of a fish filet, fish bones will be caught in the holes in the cylinder. Additionally there is a counter-pressure device in the shape of a tounge or lip, which is arranged adjacent the surface of the cylinder, and forms a narrow gap between the tounge and the cylinder surface, but which has the ability to yield further to some extent. In this gap the fish bone is squeezed and moved into the housing, where a vacuum suction device conveys the bone further away to a collecting receptacle.
Although this known device represented a huge step forward within this technology, it has shown to suffer from a number of disadvantages.
First of all the machine is provided with a housing, which is necessary to contain the angular gear required for the cylinder to be operated according to desire. This housing is manufactured of metal, which makes the total weight of the machine high. In addition it is a very complicated process to work the housing to the desired structure. It is in fact not possible (at a reasonable cost) to mold or in any other way shape the housing. Due to the complicated manufacture the cost of manufacture for the housing becomes very high.
Another functional drawback, which is a direct consequence of the housing, is that during use of the machine, i.e. when the machine is moved forward across a fish filet, it obscures the point where the bones are picked up, which makes it more difficult for the operator to correctly catch the bones. A still more serious problem thereby is that the bones very easily are flattened or bent down by the front edge of the housing, which has as a consequence that the bones easily evades being caught, and that the operator must try again. Thereby it may happen that the operator must press the machine down against the filet, whereby the meat may be damaged to some extent, with a less appealing appearance as a consequence.
Due to its complicated construction with many nooks and corners that are difficult to get access to it is relatively timeconsuming and cumbersome to clean the housing. In addition the housing must be dismounted for the purpose of cleaning. Furthermore, certain cleaning equipment is required, such as brushes and other tools, in order to achieve effective cleansing.
Another problem is that the fishbones, once they have been caught by the machine, are conveyed along the periferi of the cylinder and enters the interior of the housing, where they must change direction before they are sucked out. This may lead to that the bones get stuck inside the housing and in gradually block the exit, which leads to an operation interruption.
A detail that raises the price of the known machine further is the construction of the cylinder. It is milled from one piece of solid metal to the desired shape, i.e. a cylinder with one closed side wall. This is costly both because of the material consumption and the time necessary for milling.
SUMMARY OF THE INVENTION
The present invention is an improvement of the above discussed device, and is defined in claim 1.
It comprises a rotatable element of cylindrical shape, mounted axially on the outgoing shaft of a driving unit, such as an electrical, pneumatic or hydraulic motor. The cylinder, which in one embodiment is provided wit
REFERENCES:
patent: 3911530 (1975-10-01), Kalfsbeek et al.
patent: 4631780 (1986-12-01), Leining
patent: 5135430 (1992-08-01), Jordan
LandOfFree
Bone removing device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bone removing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bone removing device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-349556