WO1986006615A1

WO1986006615A1 - Delivery equipment for cows

Info

Publication number: WO1986006615A1
Application number: PCT/NL1986/000012
Authority: WO
Inventors: Gerrit Jan Vink
Original assignee: Gerrit Jan Vink
Priority date: 1985-05-17
Filing date: 1986-04-07
Publication date: 1986-11-20
Also published as: EP0221101B2; AU5697286A; EP0221101B1; NL8501417A; EP0221101A1; DE3668775D1

Abstract

Calving device consisting of a support (5) which encompasses the whole of the rear end of the animal and a forked piece (6) hinged to this which extends into a pole along which a lever mechanism (1) slides. Ropes are attached to the hooves of the calf and the cow is helped by pulling on the calf with the lever mechanism (9) during the contractions.

Description

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This invention is a tool which is used for calving. In difficult deliveries the animal must be helped. This is done by attaching ropes to the front or hind hooves of the calf and assisting the cow during the contractions by pulling on the calf up to a weight of 180 kg. This obviously takes more than one person. Therefore, delivery equipment has been brought into the trade to make things easier. This generally consists of a long tube on which there is a sliding lever mechanism. Cn one end of the tube there is a horizontal support which is placed on the cow's rump below the vulva. This kind of structure is generally known and has been manufactured by several companies. Its advantage is that one person has enough strength to operate it which means that difficult deliveries can now be done by one person. Its disadvantage, however, is that the horizontal support placed against the rump of the animal below the vulva is not very secure and only permits downwards traction (from a standing cow) . When it is used for pulling upwards, which is necessary for eample in a ^'breech birth, the support slips downwards towards the udder. This also happens with very difficult deliveries and ones where the cow is lying but not stretched out. This means somebody has to hold the support in place while a second person operates the lever. The aim of this invention is to produce delivery equipment of this type without the disadvantages mentioned above. In the delivery device described here the simple horizontal support is replaced by a curved tube which is placed against the animal and forms a complete, or almost complete, circle. The circle runs below the vulva of the animal, along the ischium to above the back of the animal's back. This makes slipping to the left or right up or down impossible. The support has two hinges attached to a forked end. The other^'end of the fork leads into a lever mechanism of the usual type so that this part can be moved up or down without the support moving. This allows traction to be placed on the calf both upwards and down¬ wards. Further information about the invention is given in drawings shaving its construction.

Fig. 1 : Calving device of the usual type with lever mechanism

(1) and single horizontal support (2). Fig. 2: Calving device of the new type with lever mechanism and multiple support section (4) . Fig. 5: Schematic drawing of the multiple support section with the curved support tube (5) and the forked piece (6) hinged to it. Fis. 4: Shows hew the calving device is nlaced against the animal and the calf is pulled upwards. Fig. 5: Shows how the calving device is placed against the animal and the calf is Dulled downwards.

Claims

CLAIM

Calving device, of the known type but characterised by the fact that the support attached to the lever mechanism does not consist of a single horizontal support but of a section shaped in such a way that, in com¬ bination with a forked piece, it encompasses the whole of the rear end of the animal and then extends into a long tube or pole along which a lever mechanism slides.

The structure described here makes it possible to exert traction both upwards and downwards while the support section remains firmly anchored on the animal's rear.