FR2507244A1 - KNIFE ARRANGEMENT, ESPECIALLY FOR CHARCOAL OR SIMILAR PLATE - Google Patents

Abstract

THE KNIFE IS INSERTED IN A POCKET OF THE SUPPORT 10 AND HANGS FROM THE REAR WITH A BEC 19 A WALL 14 OF THE POCKET. THE LOCKING OF THE KNIFE IN THE SUPPORT 10 IS DUE TO A TRIM WHICH ACCORDING TO THE INVENTION IS CONSTITUTED BY A ROUND CORNER 23 INSERTED IN A SLIT LOCATED BETWEEN A FRONT WALL 17 IN THE FORM OF A BARRET OF THE POCKET AND A FRONT SURFACE 22 OF THE KNIFE . THANKS TO THIS ROUNDED CORNER THE KNIFE CAN BE CLOSED IN THE SUPPORT 10 AND EVEN BE TIGHTENED IF NECESSARY.

Description

1 2507244

  Knife arrangement, in particular for charcoal plane or the like

  The invention relates to a knife arrangement, in particular

  A special knife for a coal knife or the like, with a knife that can be inserted into the pocket of a knife holder, a knife that hugs a wall of the holder pocket from behind and has a wall on its front face. recess that surrounds a bar-like wall of the support, a seal that can be inserted into a

  slot located between the barrel-shaped wall surface

  te and the front surface of the knife limiting the recess

  of it, to lock the knife in the pocket.

  Such knife arrangements are known from German Patent No. 12 91 708.

  in the support pocket here consists of a metal plate

  only of small thickness which can be introduced with clearance in said slot between the bar-shaped wall of the support and the hook-shaped recess of the knife and blocked by means of a clamping sleeve or the like which is introduced into bores In order to disassemble the knife, the clamping sleeve must first be unlocked and the packing removed. The knife can then be brought back into the holder pocket sufficiently forwards against the bar-shaped wall. so that the lock of the rear spout is raised inside the

the pocket.

  Then the knife can be tilted sideways

  out of the pocket of the support open towards the face of size.

  In another known arrangement according to the German publication DE-OS 23 55 554, instead of the clamping sleeve as locking element, a blocking plate is used.

  can be folded against the outer surface of the upholstery

  re, sheet that is secured to the support or knife.

  In known knives arrangements of the above type

  In particular, because of knurling loads of knives, deformations and abrasion of the parts which ensure the seat of the knife in the support, so that the surfaces of the knife and the

2 'L 2507244

  support that ensure the seat of the knife, resulting in a game

  and a beat of the knife in the support.

  The object of the invention is to conform a knife arrangement of the aforementioned type of a simpler and more robust embodiment so that a firm seating position is obtained.

  knife in the holder and also, if necessary, a tightening

  fast and convenient knife.

  This object is achieved according to the invention in that the lining is constituted by a rounded corner and in that the surface of the bar-shaped wall forming a bearing surface for the rounded corner, as well as the front face of the knife. , are consistent

  in bearing surfaces for rounded corners.

  cement is made such that the surface of the bar-shaped wall serving as a bearing surface for the rounded corner is of convex shape, while the front face of the knife is concave, the centers of curvature of these two surfaces being offset from one another so that between the convex surface of the bar-shaped wall and the concave front surface of the knife is formed an arc-shaped corner slot narrowing one end to the other to receive the rounded corner In addition, it is recommended to provide on the front side of the knife holder, between the wall-shaped

  bar and the bottom of the support pocket, an opening of introduction

  duction of the corner by which the rounded corner can be introduced

and pushed into the corner slot.

  The knife can be tightly fixed in the support pocket

  by means of the rounded corner, if necessary, also tightened

  operation, which can be done by means of

  vigorous hammer blows on the thick end of the wedge

  With the use of the rounded corner, relatively large corner bearing surfaces are obtained, so that undesirably high specific surface pressures are avoided on the corner and on the corner bearing surfaces. the rounded surface of the bar-shaped wall forming the bearing surface of the rounded corner, extends over an arc of at least 130, advantageously from 150 to 1700 The rounded corner can be made self-blocking so that he can not

  have exit from the corner out of the slot while walking.

  The arrangement can be made in such a way that the operating forces that tend to push deeper into the corner

  in the pocket, further accentuate the tightness of the corner.

  In another embodiment of the invention the rounded corner is provided with at least one slot, at the narrow end, the slotted end forming a crimping tab which can be bent around the bar-shaped wall and which blocks the rounded corner against said wall It is not necessary to have a particular locking element in the form of a socket

  clamping, a locking t 8 separated from the wedge, or the like.

  The rounded corner has advantageously, in the area of

  its end, an extra thickness that is smaller than the

  wedge gap between the bar-shaped wall surface and the front face of the knife The reduced thickness of the rounded end zone facilitates the bending of the

  end zone of the corner around the bar-shaped wall.

  In another advantageous embodiment of the invention, the support surface for the wedge, serving to support the wedge, of the rear wall of the support pocket is convexly formed while the knife receives a bearing surface. concave corresponding to the curved surface support for the corner One thus obtains large bearing surfaces on the corner and on the wall

  back of the pocket, so that one also avoids

  The contour of the curved bearing surface for the corner of the back surface of the pocket may correspond at least approximately to the rounded outer contour of the corner In this case, it is possible to introduce

  also in the holder a reversible double knife, which pre-

  according to a symmetrical arrangement, two cutting edges and two concave front surfaces, one of which forms the bearing surface against the convex rear wall of the pocket

  and the other the support surface for the rounded corner.

  According to another essential feature of the invention, which can be used also in knife arrangements of the known type, and therefore has an inventive importance in itself, the bearing surface for the knife, on the rear wall of the pocket, can be formed by a cylindrical pin The knife then,

  on his body pushed into the pocket, a partially cylindrical recess

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  that adapted to the ankle with which it leans against the ankle and which forms the locking nose hanging the

  ankle from behind The knife support is provided with

  tagbly from ankle receiving openings in the-

  In this arrangement, it is possible to use for the rear support of the knife a particular peg, preferably a hardened and / or stainless steel peg which can be

  made as a separate piece and connected to the knife support.

  Preferably the knife support is a molded part while the ankle, as already mentioned, is made of stainless steel, so that it is avoided welding the knife on the ankle by rust It is recommended to press the dowel between the side walls of the knife support against a bearing surface

  trough, on the back wall of the pocket which forms a counter

solid support.

  The invention will be explained in more detail by means of the following non-limiting examples of embodiment with reference to the accompanying drawing in which: FIG. 1 shows a knife arrangement according to the invention in side view, partly in section, the knife being shown separately; knife support;

  Figure 2 shows the rounded corner used in the

  Figure 3 is a view in the direction of the arrows III-III of Figure 1; FIG. 4 is a sectional view of the arrangement according to FIGS. 1 to 3, the knife being locked in the support; FIG. 5 is a view in the direction of the arrow V of the

figure 4.

  FIG. 6 is a section corresponding to FIG.

  second advantageous example of embodiment of the invention, the

  According to the invention with a double knife FIG. 7 is a longitudinal section of another embodiment of a knife arrangement according to the invention; Figure 8 a top view of the knife support of the

  Figure 7, the knife being removed.

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  The knife arrangement of FIGS. 1 to 5 consists of a knife support 10 and a knife 11 whose cutting edge 12 is formed by a sintered metal lining. The knife support can, in a known manner, be mounted on a carbon plane. or other slaughtering machine at the bottom or piercing, so

definitive or removable.

  To receive the knife 11, the support 10 is provided with a pocket 13 which is open laterally, that is to say toward the face of the waist The pocket 13 has, at its posterior end

  deep inside, behind a pocket wall 14, a recess 15.

  On the opposite side, the pocket 13 is provided with a front opening 16 disposed behind a bar-shaped wall 17,

  that is to say between said wall 17 and the bottom 18 of the pocket.

  The knife 11 is constituted by a knife plate which comprises at its rear part a spout 19 or the like, which enters the opening 15 when the knife 11 is installed in the pocket 13 and also surrounds, like a hook, the wall 14 , what

  ensures the knife 11 against a fall out of the pocket (fig 4).

  On the other hand, the knife 11 has on its back a convexly rounded surface 20 by which it bears, in the mounted state, against a bearing surface 21 concave rounded

  on the rear wall 14 of the pocket (fig 3).

  The knife has, at the anterior end of its body penetrating into the pocket 13, a recess having a concave rounded frontal surface 22 which constitutes a bearing surface for a rounded corner 23 The rear surface 24 of the bar-shaped wall 17 is convexly rounded towards the pocket 13 The center of curvature of the surface 24 is slightly offset

  outwardly with respect to the center of curvature 26 of the sur-

  front face of the knife 22 (FIG. 4), so that the two surfaces 22 and 24 form a wedge-shaped wedge-shaped wedge slot, one end opening on the front opening 16 of the support, towards the other end located on the other side of the bar-shaped wall 17 -The bar-shaped wall

  24 rounded extends over an arc of about 150 to 1700.

  As is more specifically shown in FIGS. 2 and 4, the rounded corner 23 extends over an arch 10 to 40 greater than that of the surface 24 of the bar-shaped wall. The rounded corner 23 has its thickness in the area end portion, reduced to 27 and has in this narrowed area a slot 28 extending to the end Through the slot of the wedge 23, are formed at the reduced end of the corner two thin tabs (or tongues

recovery) 29.

  The knife 11 is introduced laterally into the pocket 13 of the knife support 10, rotating, hanging behind the wall 14 of the bag with its spout 19 and bearing by its bearing surface 20 against the bearing surface for The rounded corner 23 is then forced into the slot between the surfaces 22 and 24 through the insertion opening 16, which can be done by hammering on the thick end of the corner. The knife 11 is thus fixed to the pocket 13 of the support 10 and tight To ensure the rounded corner 23, is bent at least the tongue 29 on the end face of the bar-shaped wall 17, which is shown in Figures 4 and 5 The other non-curved tongue 29 may be used for removal

  In the case where the knife 11, in the course of

  loosens, it can be tightened by pressing

  Complementary rounded corner 23 We can then curl the other

  tongue 29 of the rounded corner to fix the tightened corner.

  To release the knife 11, simply remove the rounded corner 23 of the slot in the opposite direction after having previously defeated the connection bending of the tongues 29 of the rounded corner The release of the wedge is made with hammer against the curved end of the corner, by introducing a tool into the narrowed end

  of the slot or pulling the rounded corner 33 through the opening 16.

  The knife arrangement according to Figure 6 is distinguished

  of Figures 1 to 5, as far as the configuration of

  ration of the knife support 10, essentially in that the rear wall 14 of the pocket has a bearing surface 21, for the knife, curved, convex, in the plane of section, inside the pocket 13 and s extends substantially over the entire height of the support The contour of the surface 21 of the rear wall 14 of the pocket essentially corresponds to the outer contour of the curved corner 23, therefore of the surface of the wedge which rests against the concave frontal surface 22 This arrangement makes it possible to mount in the support 10, a single knife with a single cutting edge or, as represented by a double knife 11, which has symmetrically with respect to its median plane 31 each a cutting edge 12, 12 'and a

  concave rounded surface 20 or 22, one of which represents the sur-

  bearing face for the rounded corner 23 and the other the surface of ap-

  by which the double knife rests on the curved surface

  of the knife 21 of the wall 14 of the pocket In the position

  Figure 6 the corner is supported by the rear surface

  against the curved surface 21 of the wall 14 while the sur-

  front anterior face 22 serves as a bearing surface at the corner.

  Since the knife 11 is symmetrically shaped, it can also be pushed into an upside-down position of 1800 in the support 10. The surface 20 then forms the bearing surface for the wedge 23 while the surface 22 forms the support surface that sits. the double knife against the rear wall 14 The spout 19 provided in the example of FIGS. 5 is formed in the embodiment according to FIG. 6 by the rounding of the concave surface 20 or 22 at the transition with

the plate bottom 32.

  In FIGS. 7 and 8 there is shown an example of reali-

  tion-preferential arrangement of a knife arrangement according to the invention.

  It differs from those of Figures 1 to 5 essentially in that the bearing surface for the knife, located in the area of the rear wall 14 of the pocket, is formed by a cylindrical pin 33 which is maintained at its ends in round openings 34 on the two opposite side walls of the support 10, and which rests in the area between the side walls 35 against a surface 36 in the trough of the wall

  back 14 of the pocket The knife on the posterior face

  the upper part of its body introduced into the support 10 a concave corresponding bearing surface, in the trough 20 by which it bears against the cylindrical pin 33 The bearing surface surrounds the cylindrical pin 33 at least approximately 1600 to 180 In this case, the nose 19 is formed by the bearing surface 20 which surrounds the peg 33 of

the other side.

  The support 10 is preferably produced by molding while the cylindrical pin 33 is advantageously made of stainless steel. It is recommended to design the arrangement

  in such a way that the ankle 33 can be maintained by

  Tightened step (or fitting) in the holes 34 of the support 10 The embodiment described above of the support of the knife 10, with 8 25072 k 4 the pin 33 forming the counter-support for the knife, is very advantageously usable in the arrangement of knife according to the invention which uses to fix the knife a rounded or curved corner 23 of the type described It can also be used if necessary for knife arrangements which instead of a rounded corner 23, use other fastening means of known types.

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Claims (15)

  1 Knife arrangement, in particular for planer with   good or the like, with a knife that can be inserted into the pocket of a knife holder, knife which at the back, hangs from behind a wall of the pocket of the support with a spout or the like and which, present on its front face a recess which surrounds a bar-shaped wall of the hammer support, a gasket which can be inserted into a slot located between   the surface of the bar-shaped wall, and the frontier surface   knife blade limiting the recess of said knife to   rusting the knife in the pocket, characterized in that the lining is constituted by a rounded or curved corner (23) and that the surface of the lug-shaped wall (24)   serving as a bearing surface for the rounded corner (23) and the sur-   front face (22) of the knife are shaped as bearing surfaces rounded for the corner.   2 knife arrangement according to claim 1,   characterized in that the centers of curvature (25,26) of the rounded, convex, (24) surface of the bar-shaped wall and the rounded, concave front surface (22) of the knife are offset between them.   3 A knife arrangement according to any one of the   1 and 2, characterized in that an opening (16) of introduction   corner ducting is provided on the front face of the knife support (10) between the bar-shaped wall (17) and the bottom of the pocket (18).   4 A knife arrangement according to any one of the   1 to 3 characterized in that the surface (24) of the bar-shaped wall forming the bearing surface for the rounded corner extends over an arc of at least 1300, preferably at least near 150 to 1700.   A knife arrangement according to any one of claims 1 to 4 characterized in that the rounded corner (23) is provided with at least one slot (28) extending over the thin end of the wedge, the end thin wedge thus split, forming a crimping tab (29) foldable around the bar-shaped wall. 2507244   6 A knife arrangement according to any one of the   1 to 5 characterized in that the rounded corner (23) has in   the zone of its end a thickness smaller than the   wedge slot between the surface (24) of the bar-shaped wall and the front face (22) of the knife.   7 A knife arrangement according to any one of the   1 to 6 characterized in that the rounded corner (23) is   tends to a bow at least 100 greater than that of the surface   (24) of the bar-shaped wall.   8 A knife arrangement according to any one of the   1 to 7 characterized in that the bearing surface (21), for the knife, of the rear wall (14) of the pocket of the knife support (10) is convex, convex, and that the knife   (11) has a bearing surface (20) of concave shape cor-   corresponding to this convex surface of support for the knife.   Arrangement according to claim 8, characterized in that   the contour of the bearing surface (21) for the knife cor-   responds essentially to the rounded outer contour of the corner (23).   Arrangement according to all of claims 8 and 9   characterized in that the knife (11) is formed as a reversible double knife which has symmetrically with respect to the median plane two cutting edges (13, 12) and two concave rounded knife face surfaces (20, 22), one of which ( 20) forms the bearing surface against the convex rear wall (24) of the pocket   and the other (22) the bearing surface for the wedge (23).   Arrangement according to any one of the claims   1 to 10 characterized in that the support surface for the knife of the rear wall (14) of the pocket is formed by an ankle cylindrical (33).   Arrangement according to Claim 11, characterized in that the knife support (10) is provided with openings (34) for receive the ankle (33).   Arrangement according to Claim 12, characterized in   the peg (33) is held tightly in the openings (34).   Arrangement according to one of the claims   11 to 13 characterized in that the pin (33) is supported between the side walls (35) of the knife support (10) against the surface   support (36) in the trough of the rear wall (14) of the pocket.   Arrangement according to any one of the claims   11 to 14 characterized in that the knife support (10) consists   in a molded part and the peg (33) made of stainless steel.