FR2581845A1 - WORK AND SAFETY CLOTHING - Google Patents

Abstract

WORK AND SAFETY CLOTHING INCLUDING INTEGRATED PROTECTION AGAINST ACCIDENTS, PARTICULARLY THOSE CAUSED BY SHARP TOOLS, CONSISTING OF AT LEAST ONE ELEMENT MADE BY A SUPERIMPOSITION OF SEVERAL LAYERS OF FABRICS ASSEMBLED, CHARACTERIZED IN THAT THE LAYERS CONSISTING OF THE ELEMENT ARE OF THE SAME DIMENSION AND THAT THEY ARE ASSEMBLED BETWEEN THEM AND ON THE GARMENT BY A PLURALITY OF SPACED STITCHES 7, 10, 11, 8 FROM THEIR EDGE INWARD ON THE PERIPHERY OF THE ELEMENT AND BY CROSS-SEAMS 9 AUDIT ELEMENT AND REGULARLY SPACED.

Description

The present invention relates to a work and

  safety with built-in protection against accidents, especially those caused by chainsaw chains or more

  usually those caused by tools.

  The use of chain saws is particularly dangerous because, whatever safety systems they have, there is always a delay between the attack by the chain of a member and the stopping of the latter, even due to the inertia of the chain and its drive sprocket. We have proposed different types of limb protection or

  the entire body of the user.

  These protections are mainly those of a first type which aim to obtain a delay effect on the penetration action r of the chainsaw chain to allow the user to stop the engine or remove the said chain, and those

  of a second type which aim to block the chain of the section-

  neuse. Those of the first type are generally constituted by a thick mattress of fabrics through which the progression of the chain

is reduced.

  They are generally bulky and impede the movements of the user who, of course, will tend not to have

  recourse even in the case where they are integrated into a garment-

  work that he would prefer not to wear.

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  Those of the second type are generally constituted by a

  superimposition of pieces of fabric in superimposed layers assembled

  tied together and likely to detach completely

  one or part after the other, under the trac-

  y tion of the chain to come and engage between the drive pinion

  chain and block the movement of the latter

  re. These protections are generally less bulky than those

  of the first type and more easily integrated into a garment.

  US Patent 4,351,065 BOUCHARD describes this type of protection.

  which is integrated under the fabric of the garment.

  This protection consists of a superimposition of pieces of fabric, preferably synthetic, some of which have the effect of sliding the catne and others are removable.

  f to block said chain saw chain.

  These parts are of different dimensions according to their functions.

  The tear-off parts are fixed to the other parts by

  elastic members liable to rupture under traction.

  The solution provided by this patent, although superior to the solutions

  Of the first type, not entirely satisfactory for

many reasons.

  The differences in dimensions, essentially the width, between the parts mean that the degree of protection is not identical in

3 2581845

  all point of the protective part.

  In addition, this complicates manufacturing.

  Another drawback lies in the attachment of the parts to each other which is done either by lateral sewing or by elastic members. This results in poor performance of the parts between them generating a sliding of one with respect to the other, which

  which can create uncomfortable extra thicknesses.

  This is particularly the case when the elastic members are

  either slumped after washing the garment or broken after the

repeated threading of the garment.

  This results in significant discomfort for the user over time.

  sator and a decrease in protection when the layers of

  fabrics are no longer in their original place.

  The principle behind the making of the garment according to the

  vention is that it must be and remain comfortable and effective for the user during its entire lifespan, i.e.

  tell up to the accident that deteriorates the protection.

  Another principle is that the garment must be light, compact and easy to put on or take off while bringing

maximum protection.

  Another principle is that the garment with its pieces of pro-

  tection and integration from one to the other must be sim-

them and inexpensive.

258 1845

  For this purpose, the work clothing according to the invention comprising at least one integrated protection constituted by a superposition of layers of fabrics, this protection being fixed to the fabrics of the clothing is essentially characterized in that for each protection the layers of the protective fabrics are formed of pieces of the same dimension which are joined by their periphery, on the one hand by means of seams transverse to their selvedges and on the other hand, by seams parallel to said selvedges and

  set back from the previous ones, that these seams for fixing the pieces

  these between them are combined with transverse seams to the protection, parallel to each other which ensure the maintenance

  different layers together, and that these different layers

  tures for fixing and holding the pieces in position between

  they are combined with protective fastening seams

  tion, to the fabric of the garment, these latter seams being mena-

  run parallel to the selvedges near the other seams.

  According to a preferred embodiment, the layers of protective fabrics are joined by their periphery by means of

  overcasting seams with overlock stitch set back from the surface

  lage, these seams being always combined with transverse seams for keeping the pieces in position with one another and always combined with the seams for securing the protection

  thus formed in the fabric of the garment.

  By this combination and succession of seams from the periphery inwards, an effective fixing of the parts is obtained.

between them.

  In addition, these different seams have a breaking point

258 1845

  precise so as not to yield to tearing only when the links of

  the chainsaw chain enters the protection and soil

licit in traction.

  The seams thus ensure permanent fixation of the different

  your layers between them on the one hand, and protection to the garment

  on the other hand, as long as the protection is not attacked

by the chainsaw chain.

  On the other hand, when the protection is attacked by the chain of the chainsaw, the seams are stressed suddenly and

  49 give in to the wrenching effort.

  Thus the different layers constituting the protection give way one after the other and are driven by the chainsaw of the chainsaw and come to constitute a jam at the level of the

  drive pinion, which immediately stops the movement

41 chain link.

  In addition, the method of fixing the layers together on the one hand, and the protection to the garment on the other hand, allows the edges to be tightly pressed against each other and on the

  clothing, which avoids uncomfortable extra thickness

& the.

  Thanks to a choice of suitable materials, very

  thin, of the order of 2 mm, are obtained, which improves

  further enhances the comfort of work and safety clothing.

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  According to another provision of the invention, the protections are fixed as close as possible to the seams joining the panels together which constitute the garment, jacket or pants, this

  which increases protection and comfort.

  According to yet another characteristic of the invention, the cou-

  transverse and parallel joining of the pieces together, are seams, transverse in the direction of the chain of protection, made along broken or wavy lines having a succession of salient and re-entrant angles, which allow the uniform maintenance of the layers but which favor the successive tearing of these when the protection is

  attacked by the chainsaw chain.

  According to another provision of the invention, the element of pro-

  tection consists of an upper envelope which comes against

  the inner side of the fabric of the garment and an inferior envelope

  between which layers of material are placed

  woven synthetic, weft and warp, with characteristics

  high cut and tensile strengths and at least one layer of a woven or nonwoven fabric of aromatic polyamide aramid known commercially under the name of KEVLAR Preferably the layer of KEVLAR is placed on the envelope lower.

  Other advantages and characteristics of the invention appear

  will read the following description of a garment and

  of its protective elements in a preferential form given

  born by way of nonlimiting example and illustrated by the accompanying drawings in which:

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  - Figure 1 is a plan view of a garment according to the invention-

  tion, - Figure 2.1 is a detail view of a protective element according to the invention, the different layers of tissue being separated to facilitate understanding, - Figures 2.2, 2.3, 2.4 are cutaway views of other forms of protection,

  - Figure 3 is a plan view of a protection according to the invention-

  tion, - Figure 4 is a partial view of the protection according to the

figure 3.

  As shown in Figure 1, the garment according to the invention

  includes pants 1 and jacket 2 on which the protectors

  3 are represented by hatched areas, but it goes from

  so that said garment can have any other configuration.

  In the embodiment according to FIG. 1, the protections are mounted on the internal face of the garment on the parts

  particularly sensitive, i.e. the legs for the pan-

  heel, preferably from the groin to the ankles, the sleeves, the

  chest and shoulders for the jacket.

  Each of the protective elements of different shape depending on the panel of the garment to which it must be adapted, is made up

  as follows (see Figure 2).

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  It includes an envelope or upper wall 4 which comes to the

  tage to be fixed against the internal face of the fabrics of the garment and an envelope or lower wall 5 which is inside the

  clothing in contact with the user (Figure 2).

  The walls 4 and 5 are of the same dimensions.

  Between them are placed 6 superimposed layers of a fabric

  a woven or nonwoven synthetic material having characteristics

  high elasticity and cut resistance

tensile.

  The successive layers of materials can be the same

  nature or different nature both in terms of their composition

  sition, their structure, their armor, their texture,

weight and resistance module.

  Preferably, the successive layers are made of a material

  synthetic line woven according to a "canvas" type frame ETA-

  MINE with one wire above and one wire below in accordance

  airy texture for example worth seven to eight threads

square centimeter.

  Preferably, each layer 6 has a texture in the warp direction of the protection equal to 7.3 and in the weft direction

a texture equal to 8.2.

  The threads making up each layer are made of continuous polyester and the decitex index of the thread used ect from 1670 while the mass of the fabric per m2 is 250 grams for a resistance of 850 Kgs

at the breakup.

  In addition, the chain direction of the protection is parallel to the axis

of the member to be protected.

  According to the invention, the layers 6 of fabric are of the same size.

  Let us say that the envelope walls 4/5.

  All of the superimposed layers 6 including the envelope 4/5

  is joined by their periphery by means of a succession of

  tures arranged from the edges of the element towards the

  inner seam, these seams being assembly seams of the

  hes of the element and the stitching securing the element to the fabric

su of the garment.

  As shown in the accompanying drawings, the selvedges of the fabric layers are joined edge to edge and around the entire periphery by a

  transverse seam 7 produced by overcasting.

  Set back from overcasting, an overlock stitch 8

  parallel to the edges around the entire perimeter of the element.

  <These seams are made with a thread with a precise breaking point and in a sufficiently loose way so that they do not prevent the tearing of the different successive layers, as will be

set out below.

  Crosswise between the edges of the protective element

  are made with regular seams or stitching 9

  spaced apart, for example fifteen centimeters which are made transversely to the warp direction of the layers 6 of fabric with a thread also with a precise breaking point which allows

  normal maintenance of the layers in position and which also allows

  er their successive tearing by breaking of the wires, during the

  traction of the chainsaw chain.

  Preferably these assembly bites are carried out according to a

  wavy or broken line with prominent and sharp angles

  rants. When mounting the protective elements on the garment at least one other seam 10 for fixing the element is made between the overcasting and the seam of the overlock and set back from the

  edge of the layers of fabric around the entire periphery of the

  element. Preferably, this seam is made a few millimeters, for example 5 mm, from the edge of the layers of fabric in order to prevent it from escaping from the seam and from the position which is given to them, which would moreover make a thickness

uncomfortable.

  Preferably a second seam il1 is made parallel XAi to the seam 10 and set back inward from the seam of the overlock with a spacing relative to the seam 10 of the order

8 mm.

  This seam also has, like seam 10, the function of fixing the protective element on the fabric of the garment and

  21V also helps to keep the layers of fabric in position

  tion. Preferably according to the invention, the envelope 5 consists of a fabric composed of approximately 65% of polyester and 35% of cotton

  and the envelope 4 consists of a polyamide mesh fabric.

  2i As shown in Figure 2/2, the protective element, in addition to the envelope walls 4-5 comprises five layers 6 of fabric as mentioned above, made of continuous woven polyester yarns, plus an ultimate layer 12 , before the inner envelope wall 5, (in contact with the user) made of a fleece

  KEVLAR mounted on a KEVLAR knitting.

  j 'According to another embodiment shown in Figure

  2-3, the protective element is of identical composition to the ex-

  Example of Figure 2-2 but instead of the KEVLAR fleece layer 12 a layer 13 of KEVLAR woven warp and weft. This layer of KEVLAR woven warp and weft is predominant in the blocking phase of the warp thanks to the very high

  resistance of this material to breaking and cutting of wires.

  Preferably, this KEVLAR is woven in a weave type canvas with thread above and thread below and it is textured comprising o about 7 threads in warp and weft per cm2, therefore relatively airy. The DECITEX index of the thread used is 1670 and the mass of the fabric

  per m2 is 250 grams for a resistance of 850 kgs.

  According to another embodiment of the invention shown

  in Figure 2-4, the protective element is superimposed

  tion, a layer 12 of KEVLAR fleece and a layer 13 of fabric

KEVLAR warp and weft.

  It goes without saying that one or more layers of KEVLAR can be

  re arranged, either first, last layer or

f interlayer.

  The tests carried out have shown that the use of fabric (fleece or warp and weft) in KEVLAR very significantly improves the

protection performance.

  According to another preferred embodiment of the invention, the protective elements have substantially the same shape as the panel of the garment to which they adapt and each is fixed

  on said panel closest to the edges and stitching of assembly

age of it.

  The operation of the protection according to the invention is as follows:

  Before: When attacking the chainsaw chain, the links

  gouges thereof engage between the relatively large meshes

  layers of tissue after, depending on the point of attack,

  broken one or more lines of cross stitching 9.

  The layers of fabric then undergo a traction which breaks

  continually their seams and very quickly entails one or more layers until engagement between the pinion and the ridge which has the effect of blocking the latter in a very short time

  short (a few hundredths of a second).

  The use of a warp and weft fabric with poor texture

  rée is fundamental because it facilitates the interpenetration of the gouges of the chain of chainsaw and the fabric and accelerates the process

  blocking, instead of only delaying penetration of the

this one.

  The described protection elements mounted inside the garment-

  can also be mounted outside.

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  The garment produced is particularly light and comfortable to wear.

  In addition, due to the embodiment of the program elements

  tection and the materials used, it can be machine washed without damaging the protection, it remains permanently effective as long as it is intact and in its original state.

  As a nonlimiting example, the pro-

  assigned to the manufacture of clothing protections.

  Bu0 This process consists first of all of unrolling strips of fabric

  intended to constitute the different layers of protection.

  After superposition of these different layers, the seams 9 are formed, these seams being formed in the

warp direction of the fabric band.

  Subsequently, in this mattress thus formed, it is carried out

  cutting of the different protections used in the garment-

is lying.

  Then, the seams 7 and 8 are formed.

  It should be noted that the protection is cut in the mat-

  2m weary so that its greatest length grows

  transversely to the longitudinal axis of the latter.

  Thus the chain direction of protection corresponds to the weft direction of

  mattress or in the weft direction strips of fabric constituting this mat-

  weary and warped texture, layers of fabric? VJ constituting the protection will match the texture in the

  weft direction of the strips of fabric making up the mattress.

  It is quite obvious that in the case where the texture, in the

  warp direction of the layers of fabric should match the context-

  in the warp direction of the strips of fabric making up the mattress, the various protections will be cut from this mattress, so that their greatest length is parallel to

the longitudinal axis of the latter.

  It goes without saying that the present invention can receive

  and variations in the area of technical equivalents

  without going beyond the scope of this patent.

Claims (1)

CLAIMS R1 / Work clothing with integrated protection against the penetration of sharp tools, consisting of at least one element produced by superimposing several layers of assembled fabric, characterized in that the layers constituting the element are of the same dimensions and that they are assembled together and on the garment by a plurality of spaced seams (7, 10, 11, 8) from their selvedge inwards on the periphery of the element and by transverse seams (9 ) to the said element and regularly spaced. R2 / Garment according to claim 1 characterized in that the fabric layers (4, 5, 6, 12, 13) are joined by means of a seam 7 transverse to their selvedge and also by seams (8, 10 , 11) parallel to each other and to said selvedges and spaced apart and by seams 9 transverse to the protection, between the selvedges, and regularly spaced over the entire protection. R3 / Garment according to claim 1 and claim 2 characterized in that the parallel seams 10 and 11 are seams for fixing the protective element to the clothing and that the seams 7, 8 and 9 are seams for fixing and holding the layers of fabric together. R4 / Garment according to claim 1 and claim 2 characterized in that the parallel seams 9 are seams produced along a broken or wavy line, having salient and re-entrant angles. R5 / Garment according to claim 1 characterized in that the outer layers (4,5) of the protective element are produced in a tight weaving and that the inner layers of fabric (6, 12, 13) are made in loose weaving. R6 / Garment according to claim 1 and claim 5 characterized in that the internal fabric layers (6) are made of a synthetic material made of continuous polyester threads according to a warp and weft weaving of the APPROVED ETAMINE type. R7 / Garment according to claim 1 and claim 3 characterized in that the first seam (10) parallel to the edge is spaced therefrom. R8 / Garment according to claim 1 characterized in that it comprises at least one internal layer (12, 13) is made of an Aramid Aramid Polyamide material. R9 / Garment according to claim 1 and claim 2 characterized in that said material is in the form of a fleece. R10 / Garment according to claims 1 and 8 characterized in that this material is in the form of a warp and weft fabric with loose weaving. Rll / Garment according to claims 1, 5 and 8 characterized 17 25818,   in that it comprises two layers of envelope (4 and 5) and,   between them, several layers (6) of warp fabric and   synthetic and between the layers and the covering layer (4), (5), at least one layer of aromatic aramid polyamide fabric in the form of fleece and / or warp and weft fabric.   R12 / Garment according to claim 6, the protection of which includes   makes internal fabric layers (6), made of a synthetic material in continuous polyester thread according to a   warp and weft weaving characterized in that the contextu-   re of each layer is 8.2 in the weft direction and 7.3 in the chain direction.   R13 / Garment according to claim 7 characterized in that the   seam (10) is spaced 5 mm from the selvedge.   R14 / Garment according to claims 1 and 3 characterized in   that the seam (11) is spaced 8 mm from the seam (10).   R15 / Garment according to claim 2 characterized in that the seam (7) is an overcast seam and that the seam (8) is an overlock bite.