FR2620643A1 - MOWER FOR ANIMALS - Google Patents

Abstract

The invention relates to an animal clipper. According to the invention, it comprises a body 1 at the front part of which is mounted a cutting head comprising a movable blade 3, a fixed counter-comb 4 and an additional removable comb 5. The width of the toothed zone of the additional comb 5 is larger than that of the toothed zone of the fixed counter-comb 4 and the teeth are sickle-shaped in length. Each of the teeth of the comb 5 has, in cross section, the shape of an isosceles triangle, the base of which is on the side of the fixed counter-comb 4 and the area of which decreases towards the tops of these teeth. The base of the additional comb 5 is mounted on that of the fixed counter-comb 4, after the toothed zone of the latter. The invention applies in particular to the shearing of sheep.

Description

The invention relates to instruments for mechanized mowing of animals,

  used in agriculture and, in particular, lawn mowers. The cutting heads of such mowers according to the invention can be used to mow the sheep by cutting the hair at a certain height in order to obtain, immediately before the slaughter of the sheep, quality wool, meat and meat. skin that can be used in furskin and to cut sheep

  under severe weather conditions.

  Animal lawnmowers are known, for example from the English firm "Lister", whose cutting head has a comb for mowing in bad weather conditions and which cut the wool to a height slightly greater than ordinary mowing. During the progression of the segmented portion of a tooth of this comb on the irregularly shaped portions of the body of the animal, the nose of the tooth engagement portion constantly changes position in height relative to the surface of the skin of the animal, this yes conditions an important irregularity as for the height of cut of the wool, the appearance of cut portions ras and even incisions of the skin of the animal. Given these imperfections, these combs are only used to mow long wool sheep in the late fall, to protect them from over-cooling, and in the spring to protect them from sunburns. In these cases, the regular height

  the mowing of the wool does not matter so much.

  However, the combs indicated can not be used to mow sheep before slaughter because they provide neither the height nor the regularity of cut of the wool required in furskin. The closest priority, according to its constructive realization, of the attainment of the stated purpose, is constituted by a hair clipper in which the rectilinear teeth of an auxiliary comb are at a determined distance from each other. a counterblade. The indicated shape of the auxiliary comb teeth provides the required cutting height only in the case where the part to be attacked has a contour of rectilinear or rounded shape, but it does not guarantee the regularity of cut for other configurations of the body. . In addition, the use of the cutting head of the realization given for the mowing of anrimals, in particular sheep, proves impossible because it is difficult to ensure the displacement of the auxiliary comb in the wool, this which is explained by the penetration of the comb teeth into the wool and the imocssibility of removing this comb from the wool

  monolithic formed of wavy hairs.

  Thus, mowers of known achievements have a limited use and do not allow mowing of

sheep before slaughter.

  The present invention aims to eliminate the

disadvantages mentioned.

  It was therefore proposed to create an animal mower, whose cutting head would be made to ensure the regular cutting of the wool at a given height relative to the skin of the animal, applying a minimum effort to move the mower

on his body.

  The problem is solved with the aid of an animal clipper having a body at the front portion duct is mounted a cutting head comprising a movable knife, a fixed comb-comb and a removable additional comb, each comb having a base and a toothed zone, the additional comb being mounted so as to provide a space between the tops of the teeth of the two combs, in which, according to the invention, the width of the tooth zone of the additional comb is greater than that of the tooth zone of the fixed counter-comb, and in length, the teeth are sickle-shaped and each of them presents, in cross-section, the shape of an isosceles triangle whose base is located on the side of the fixed counter-comb, the area of this triangle decreasing towards the tops of the teeth and the base of the additional comb being mounted on the base of the

  fixed counter-comb after the toothed zone of the latter.

  It is advantageous for the teeth of the additional comb to be arranged in the tooth zone of the fixed counter-comb at a variable pitch increasing the

  middle tooth towards the extreme teeth.

  Fixing projections may be mounted on the basis of the additional comb on the side of the

fixed counter comb.

  This embodiment of the instrument makes it possible to ensure a regular cut at the required height of the wool to the shearing of different sheep breeds, including the shearing of fine wool sheep, with the minimum of energy expenditure to move the wool. mower on the

body of the animal.

  The animal mower for cutting wool at a slightly greater height compared to that provided for ordinary mowing consists of a body with a control and a cutting head comprising a movable blade, a counter-comb fixed

  and an additional removable comb.

  The teeth of the additional comb, arranged in the same vertical plane as the corresponding teeth of the fixed counter-comb, follow the base of the wool layer and hold it at the required distance from the movable lam-and counter-comb fixed; the sickle shape of the teeth, having a radius equal to the required cutting height, makes it possible to vary the inclination of the mower within the limits provided for mowing

  ordinary without changing the cutting height of the wool.

  The formation of a gap between the teeth of the combs makes it possible to preserve the monolithism of the wool layer; when the teeth of the extra comb pierce the layer of wool, the inner surface of the latter is subjected, in a vertical plane, to

  the action of the cohesive force between the wavy hairs.

  This helps to squeeze the teeth against the base of the wool layer and improve the regularity of the

Cutting height of the wool.

  The fact that the teeth of the additional comb are at a variable pitch, increasing from the center to the periphery, makes it possible to carry out the mowing at a determined height without shaved places or incisions of the skin on the protruding and rounded parts of the body of the animal. . The resistance to the progression of the machine during the mowing is constituted by the cutting force of the wool layer and the force required to apply to move the teeth of the additional comb in the wool resulting from the force allowing the teeth to pierce the layer of wool and effort allowing the foot of the tooth to move in the wool. The beak of the tooth with a triangular shaped area widening towards its foot pierces the layer of wool, divides it into tufts (bands), then separates and spreads the ends of the hairs thus ensuring the easy advance

from the foot of the tooth.

  Thus, the given geometrical shape of the tooth makes it possible to mow all sheep breeds with minimal physical effort, which constitutes a

  Another advantage of weight of the mower according to the invention.

  If the width of the additional comb and the number of teeth in the row are appropriately modified, then it is possible to use it with fixed counter-combs of all types, which greatly increases the possibilities of use. The application of the mentioned constructive modifications makes it possible to increase the lifetime of the mowers, to reduce the volume of the labor force required and the cost price of the mowing in comparison with the cost price of

  this operation performed using known mowers.

  The invention will be better understood and other purposes, details and advantages thereof will become more apparent

  in the light of the following explanatory description

  of an embodiment given solely by way of non-limiting example with references to the accompanying non-limiting drawings in which: - Figure 1 shows a clipper for animals according to the invention, in perspective view with partial cutaway; - Figure 2 shows the animal mower, seen from the side; and - Figure 3 is a view along arrow A

in Figure 2.

  The mower for animals (FIGS. 1, 2), in particular for mowing the sheep, comprises a metal body 1 housing a control 2. At the front part of the body 1 is mounted a cutting head comprising a movable blade 3, a counter fixed comb 4 and a removable additional comb 5 located below the comb 4 and fixed thereto by means of clamping screws 6. Each of the combs 4 and 5 comprises a base and a toothed zone. The base of the additional comb 5 carries fixing projections 7 on the side of the fixed counter-comb 4. These projections 7 provide positioning

  determined reciprocal of the teeth of the two combs.

  In the assembled state, the movable blade 3 with the control 2, the fixed counter-comb 4 and the additional comb 5 constitute a single block, their teeth being arranged in the same vertical plane. The falciform tooth of the additional comb 5 (FIG. 2) and the tooth of the fixed counter-comb 4 form a play between them.

  "d" who believes from the beaks to the feet of the teeth.

  The falciform teeth of the additional comb and the teeth of the fixed counterfeiter 4 form between them, at their feet, a collector 8 of the small hair debris. The feet of the teeth of the comb

  additional are located downstream of the cutting area.

  In the cutting zone, the entry or engagement portion of the teeth of the additional comb 5 resembles a needle and slightly protrudes from the teeth teeth of the fixed counter-comb 4. Still in the cutting zone, the part of the teeth engagement turns into part of support used to hold the cutting area of the wool to

  a required distance from the base of the wool layer.

  In this cutting zone of the wool, the support portion of the tooth of the additional comb 5 takes the form of an isosceles triangle whose area increases towards the foot of the tooth. The section between the support portion of the additional comb tooth and the root of the tooth serves to divide, by its lateral edges, the wool-forming hairs into isolated tufts. The parts of the teeth that divide the wool are transformed into wedge-shaped feet. The feet of the teeth turn into the base of the additional comb 5 located after the cutting zone of the wool. The toothing at the base of the additional comb 5 (Figure 3) is variable pitch, which increases from the center to the periphery. The number of teeth of the additional comb 5 is a function of the effective width of the fixed counter-comb 4. The width of the tooth zone of the additional comb 5 is greater than that of the

toothed area of the counter-comb 4.

  The pet mower works as follows. When the mower is moved over the body of the animal, the additional tooth engagement portion of the additional comb 5 pierces the dense wool layer close to the skin and attaches thereto thereby assuring the gap between the skin of the animal and the cutting area of the wool. Then, the engagement portion of the teeth of the fixed counter-comb 4 pierces the wool layer, fixes it and puts it in the cutting zone. At the same time, during the advance, the supporting part of the teeth of the additional comb 4 follows the shape of the body of the animal while maintaining the required gap between the base of the wool layer and the chopped off. The sickle shape of the engagement and support portions of the additional comb tooth ensures a regular mowing of the

  wool in the direction of advance of the mower.

  During the mowing, during the progress of the mower on the body of the animal, the division of the hairs through the tooth of triangular shape described, followed by the formation of a longitudinal hollow in the remaining wool layer. During the further progression of the mower, the foot of the tooth

  additional comb emerges from the wool layer.

  Imposed by the geometry of the tooth, the principle of division of the wool layer allows the mowing of animals

  having a wool in different states.

  During the mowing of the strongly protruding parts of the body of the animal, the median teeth of the additional comb, characterized by a weaker pitch, follow the shape of the parts to be attacked and ensure regular cutting of the wool in the direction transverse to the moving the cutting head. Thus, the claimed lawnmower for mowing animals allows for quality mowing of all sheep breeds, including fine wool sheep, by cutting to a required height without shaved places or incisions of the skin of the sheep. animal, with a minimum of physical effort, which results in a higher quality of wool before slaughter, animals and skins for furs, as well as mowing in extremely unfavorable conditions. time: early spring

  and at the end of autumn and in other circumstances.

Claims (3)

  1. Animal mower of the type comprising a body at the front portion which is mounted a cutting head comprising a movable blade, a fixed counterfeel and a removable additional comb, each of the combs having a base and a toothed zone, and the additional comb being mounted to form a clearance between the tops of the teeth of the two combs, characterized in that the width of the tooth zone of the additional comb (5) is greater than the width of the tooth zone of the fixed counter-comb (4). ), the teeth being falciform in length and each having in cross section an isosceles triangle whose base is situated on the side of the fixed counter-comb (4) and whose area decreases towards the tops of these teeth, and in that that the base of the additional comb (5) is mounted on that of the fixed counter-comb (4), after the toothed zone of the latter. 2. Mower according to claim 1, characterized in that the teeth of the additional comb (5) are arranged in the toothed area of the fixed counter-comb (4) with a variable pitch which increases the tooth median to the extreme teeth.   3. Mower according to claim 1, characterized in that the base of the additional comb (5) carries fixing projections (7) of the side of its mounting to the fixed counter-comb (4).