EP0442083B1 - Grinding device for knifes - Google Patents

Grinding device for knifes Download PDF

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Publication number
EP0442083B1
EP0442083B1 EP90124014A EP90124014A EP0442083B1 EP 0442083 B1 EP0442083 B1 EP 0442083B1 EP 90124014 A EP90124014 A EP 90124014A EP 90124014 A EP90124014 A EP 90124014A EP 0442083 B1 EP0442083 B1 EP 0442083B1
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EP
European Patent Office
Prior art keywords
grinding
knife
grinding device
ring
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP90124014A
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German (de)
French (fr)
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EP0442083A1 (en
Inventor
Jan Hendrik Hulskotte
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Individual
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Individual
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Priority to AT90124014T priority Critical patent/ATE103521T1/en
Publication of EP0442083A1 publication Critical patent/EP0442083A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives

Definitions

  • the invention relates to a grinding device for knives according to the preamble of the main claim.
  • Knives which are used professionally in slaughterhouses or the like have to be sharpened very frequently, and if this work is carried out by hand, there is the disadvantage that the cutting edge is ground "on sight", which usually does not result in a uniform cutting surface . Often, too much of the cut surface is removed in this grinding process, so that the knives have a significantly shorter service life, i. H. knife wear is very high.
  • a generic grinding machine in which a pot-like grinding wheel is used, the is arranged within a housing.
  • the front of this housing is closed by a cover which has a cutout for feeding the workpiece to be machined, this workpiece being attached to the end face of the cup-like grinding wheel.
  • the workpiece to be ground is not fixed in a certain position and the curvature of the cup-shaped grinding wheel has no influence on the grinding process.
  • the invention has for its object to provide a grinding device for knives, which can also be used in smaller companies and which ensures that the cutting edge can always be ground evenly and without too much material removal.
  • the knife is expressed in a guide is used and an annular grinding device, a slip ring, is used, and the grinding process takes place along the inside of the ring surface.
  • the knife is held by the handle and inserted into an opening in a housing containing the slip ring and moved along the ring surface of the slip ring via a guide.
  • the knife is supported with its knife back on the guide.
  • the actual grinding process takes place within a drum, so that it is not possible for the knife to be knocked out of the hand and metal dust to escape to the outside.
  • the housing is preferably made watertight at least in the lower region, so that the housing can be partially filled with water, so that the grinding process takes place on a wet ring surface of the slip ring.
  • the water also serves at the same time to bind the abrasion, so that dust generation is eliminated.
  • a housing 1 is drawn, the accommodates in its interior a drum 2 which is driven by a motor 4 which can be seen in FIG. 1.
  • a slip ring 3 is fixed via appropriate clamping means, so that when the drum 2 is driven, the slip ring 3 is driven in a rotating manner. With this type of attachment of the actual slip ring 3 to the drum 2, the slip ring 3 can be quickly attached and exchanged quickly.
  • the front of the housing 1 is closed by a cover 11, which is shown removed in FIG. 2.
  • This cover 11 has two openings on its front side, which are closed by two disks 12 and 14 in the interior of the cover.
  • These two disks 12 and 14 are supported in the lower area on a guide 15 and are in the upper part with an adjusting device 16 and 17, z. B. a screw drive, so that an adjustment of the disks 12, 14 in the guide 15 is possible.
  • the disks 12, 14 themselves have slots 6 and 7 and bear on their back, i. H. in the interior of the housing 1 directed knife guides 8 and 9, which are designed and arranged so that when the knife, not shown, the knife back is on the lower edge of the knife guides 8 and 9 and the knife edge on the inside, d. H. the ring surface, the slip ring 3 comes to rest.
  • the cover 11 carries a direction of rotation switch 5, with which the direction of rotation of the slip ring 3 can be changed, ie rotates once the slip ring 3 to the right and once the slip ring 3 turns to the left.
  • a safety disk 10 is adjusted so that one or the other slot 6 or 7 is closed depending on the direction of rotation of the slip ring 3.
  • the direction of rotation switch is to the right, i. H. the right slot 7 is open and the left slot 6 is closed and the slip ring 3 rotates counterclockwise within the housing 1.
  • the slots 6 and 7 are arranged in the disks 12 and 14 so that, when the knife is inserted, they make contact of the knife edges with the inside, ie. H. the ring side, the slip ring 3. This can be seen particularly clearly from FIG. 1, where part of the slip ring 3 can be seen in the slot 7.
  • the adjusting devices 16 and 17 enable the slits 6 and 7 to be adjusted in relation to the inner surface of the slip ring 3, so that readjustment is possible as a result.
  • the inside of the cover 11 is provided with a circumferential seal 18 which comes to rest on the end face 22 of the housing 1 when the cover 11 is closed. Furthermore, 1 water level viewing window 20 and 21 are arranged in the lower region of the housing, which control the height of the water level allow inside the housing. The water can be filled into the housing via a water filler connection 19 and a corresponding water outlet connection cannot be seen from the drawing and is provided in the lower region of the housing 1.
  • a knife is inserted into the slot 7 and thus into the knife guide 8 and the cutting edge of the knife is now pressed against the inside of the slip ring 3.
  • the slip ring 3 is made of flexible material, with the drum 2 made of relatively flexible material, e.g. B. plastic can exist.
  • the surface of the knife to be ground can now be conveniently pressed against the inside of the slip ring 3 and this easily adapts to the shape of the cut surface of the object to be ground.
  • the cut surface is "lapped", so to speak, which results in a very fine cutting edge.
  • the slot 6 is then used so that the other side of the cutting edge can also be ground.
  • the slot 6 remains closed until the actual slip ring 3 is driven in the opposite direction by actuating the direction of rotation switch 5, ie now rotates clockwise and thus also in the slot 6 and the knife guide 9 knives used creates a grinding cut.
  • the safety plate 10 is also changed over, ie the two components 5 and 10 are coupled to one another in such a way that only the appropriate slot opening is free.
  • the procedure here can be such that when the motor 4 is switched off and the direction of rotation switch 5 in the arrangement according to FIG. 1 is zero, the security plate 10 closes both slots 6 and 7.

Abstract

The invention relates to a grinding device for knives which works with a ring wheel driven in a revolving manner, two knife guides (8, 9) being provided in a housing (1), which knife guides (8, 9) lead into the area of the grinding surface of the ring wheel (3), the knife being insertable into these knife guides (8, 9) in such a way that, when the knife is inserted, the cutting edge of the knife comes into drawing contact with the grinding surface of the ring wheel (3). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Schleifvorrichtung für Messer gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a grinding device for knives according to the preamble of the main claim.

Messer, die professionell in Schlachthöfen od. dgl. benutzt werden, müssen sehr häufig nachgeschärft werden, und falls diese Arbeiten von Hand durchgeführt werden, besteht der Nachteil, daß die Schneide "auf Sicht" geschliffen wird, wodurch meistens keine gleichmäßig verlaufende Schnittfläche erhalten wird. Oft wird in diesem Schleifverfahren zuviel von der Schnittfläche weggenommen, so daß die Messer eine wesentlich kürzere Lebensdauer haben, d. h. der Messerverschleiß sehr hoch ist.Knives which are used professionally in slaughterhouses or the like have to be sharpened very frequently, and if this work is carried out by hand, there is the disadvantage that the cutting edge is ground "on sight", which usually does not result in a uniform cutting surface . Often, too much of the cut surface is removed in this grinding process, so that the knives have a significantly shorter service life, i. H. knife wear is very high.

Aus der AT-B-236 831 ist eine gattungsbildende Schleifmaschine bekanntgeworden, bei welcher eine topfartige Schleifscheibe eingesetzt wird, die innerhalb eines Gehäuses angeordnet ist. Die Vorderseite dieses Gehäuses wird durch einen Deckel verschlossen, der einen Ausschnitt zur Zuführung des zu bearbeitenden Werkstückes aufweist, wobei dieses Werkstück an der Stirnseite der topfartigen Schleifscheibe angesetzt wird. Eine Festlegung des zu schleifenden Werkstückes in einer bestimmten Stellung erfolgt nicht und die Wölbung der topfförmigen Schleifscheibe hat keinen Einfluß auf den Schleifvorgang.From AT-B-236 831 a generic grinding machine has become known, in which a pot-like grinding wheel is used, the is arranged within a housing. The front of this housing is closed by a cover which has a cutout for feeding the workpiece to be machined, this workpiece being attached to the end face of the cup-like grinding wheel. The workpiece to be ground is not fixed in a certain position and the curvature of the cup-shaped grinding wheel has no influence on the grinding process.

Die Erfindung hat sich zur Aufgabe gestellt, eine Schleifvorrichtung für Messer zu schaffen, die auch in kleineren Betrieben eingesetzt werden kann und die bewirkt, daß die Schneide stets gleichmäßig und ohne zuviel Materialabhub geschliffen werden kann.The invention has for its object to provide a grinding device for knives, which can also be used in smaller companies and which ensures that the cutting edge can always be ground evenly and without too much material removal.

Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst.This object on which the invention is based is achieved by the teaching of the main claim.

Mit anderen Worten ausgedrückt wird das Messer in eine Führung eingesetzt und es wird mit einer ringförmigen Schleifvorrichtung, einem Schleifring, gearbeitet, und zwar erfolgt der Schleifvorgang entlang der Innenseite der Ringfläche. Das Messer wird dabei am Griff festgehalten und in eine Öffnung eines den Schleifring enthaltenden Gehäuses gesteckt und über eine Führung entlang der Ringfläche des Schleifringes bewegt. Das Messer stützt sich dabei mit seinem Messerrücken auf der Führung ab. Das eigentliche Schleifverfahren findet innerhalb einer Trommel statt, so daß es nicht möglich ist, daß das Messer aus der Hand geschlagen werden kann und Metallstaub nach außen gelangt. Vorzugsweise wird dabei das Gehäuse zumindest im unteren Bereich wasserdicht ausgebildet, so daß das Gehäuse teilweise voll Wasser gefüllt werden kann, so daß der Schleifvorgang an einer nassen Ringfläche des Schleifringes erfolgt. Das Wasser dient weiterhin gleichzeitig zur Bindung des Abriebs, so daß eine Staubentwicklung ausgeschaltet ist.In other words, the knife is expressed in a guide is used and an annular grinding device, a slip ring, is used, and the grinding process takes place along the inside of the ring surface. The knife is held by the handle and inserted into an opening in a housing containing the slip ring and moved along the ring surface of the slip ring via a guide. The knife is supported with its knife back on the guide. The actual grinding process takes place within a drum, so that it is not possible for the knife to be knocked out of the hand and metal dust to escape to the outside. The housing is preferably made watertight at least in the lower region, so that the housing can be partially filled with water, so that the grinding process takes place on a wet ring surface of the slip ring. The water also serves at the same time to bind the abrasion, so that dust generation is eliminated.

Vorteilhafte Ausgestaltungen sind in den Unteransprüchen erläutert.Advantageous configurations are explained in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen beschrieben. Die Zeichnungen zeigen dabei in

Fig. 1
schaubildlich eine Ansicht auf die Schleifvorrichtung und in
Fig. 2
eine Darstellung, in welcher der vordere Deckel der Schleifvorrichtung abgenommen ist.
An embodiment of the invention is described below with reference to the drawings. The drawings show in
Fig. 1
a view of the grinding device and in
Fig. 2
a representation in which the front cover of the grinding device is removed.

In den Zeichnungen ist ein Gehäuse 1 gezeichnet, das in seinem Inneren eine Trommel 2 aufnimmt, die von einem in Fig. 1 erkennbaren Motor 4 angetrieben wird.In the drawings, a housing 1 is drawn, the accommodates in its interior a drum 2 which is driven by a motor 4 which can be seen in FIG. 1.

An der vorderen Kante der Trommel 2 ist über entsprechende Klemmittel ein Schleifring 3 festgelegt, so daß bei Antrieb der Trommel 2 der Schleifring 3 umlaufend angetrieben wird. Durch diese Art der Befestigung des eigentlichen Schleifringes 3 an der Trommel 2 kann der Schleifring 3 schnell angebracht und schnell ausgetauscht werden.At the front edge of the drum 2, a slip ring 3 is fixed via appropriate clamping means, so that when the drum 2 is driven, the slip ring 3 is driven in a rotating manner. With this type of attachment of the actual slip ring 3 to the drum 2, the slip ring 3 can be quickly attached and exchanged quickly.

Die Vorderseite des Gehäuses 1 ist durch einen Deckel 11 verschlossen, der in Fig. 2 abgenommen dargestellt ist. Dieser Deckel 11 weist an seiner Frontseite zwei Öffnungen auf, die im Inneren des Deckels durch zwei Scheiben 12 und 14 verschlossen sind. Diese zwei Scheiben 12 und 14 stützen sich im unteren Bereich auf einer Führung 15 ab und sind im oberen Teil mit je einer Verstelleinrichtung 16 bzw. 17, z. B. einem Schraubantrieb, ausgerüstet, so daß ein Verstellen der Scheiben 12, 14 in der Führung 15 möglich ist. Die Scheiben 12, 14 selbst weisen Schlitze 6 und 7 auf und tragen an ihrer Rückseite, d. h. in das Innere des Gehäuses 1 gerichtete Messerführungen 8 und 9, die so ausgebildet und angeordnet sind, daß bei eingesetztem, nicht dargestelltem Messer der Messerrücken an der Unterkante der Messerführungen 8 und 9 liegt und die Messerschneide an die Innenseite, d. h. der Ringfläche, des Schleifringes 3 zur Anlage kommt.The front of the housing 1 is closed by a cover 11, which is shown removed in FIG. 2. This cover 11 has two openings on its front side, which are closed by two disks 12 and 14 in the interior of the cover. These two disks 12 and 14 are supported in the lower area on a guide 15 and are in the upper part with an adjusting device 16 and 17, z. B. a screw drive, so that an adjustment of the disks 12, 14 in the guide 15 is possible. The disks 12, 14 themselves have slots 6 and 7 and bear on their back, i. H. in the interior of the housing 1 directed knife guides 8 and 9, which are designed and arranged so that when the knife, not shown, the knife back is on the lower edge of the knife guides 8 and 9 and the knife edge on the inside, d. H. the ring surface, the slip ring 3 comes to rest.

Weiterhin trägt der Deckel 11 einen Drehrichtungsschalter 5, mit dem die Umlaufrichtung des Schleifringes 3 umgestellt werden kann, d. h. einmal dreht der Schleifring 3 nach rechts und einmal dreht der Schleifring 3 nach links.Furthermore, the cover 11 carries a direction of rotation switch 5, with which the direction of rotation of the slip ring 3 can be changed, ie rotates once the slip ring 3 to the right and once the slip ring 3 turns to the left.

Gleichzeitig bei Betätigen des Drehrichtungsschalters 5 wird eine Sicherheitsscheibe 10 verstellt, so daß in Abhängigkeit der Umlaufrichtung des Schleifringes 3 der eine oder andere Schlitz 6 bzw. 7 verschlossen ist.At the same time when the direction of rotation switch 5 is actuated, a safety disk 10 is adjusted so that one or the other slot 6 or 7 is closed depending on the direction of rotation of the slip ring 3.

Bei dem in Fig. 1 dargestellten Ausführungsbeispiel steht der Drehrichtungsschalter nach rechts, d. h. der rechte Schlitz 7 ist geöffnet und der linke Schlitz 6 ist geschlossen und der Schleifring 3 dreht sich innerhalb des Gehäuses 1 entgegen dem Uhrzeigersinn.In the embodiment shown in Fig. 1, the direction of rotation switch is to the right, i. H. the right slot 7 is open and the left slot 6 is closed and the slip ring 3 rotates counterclockwise within the housing 1.

Die Schlitze 6 und 7 sind in den Scheiben 12 und 14 so angeordnet, daß sie bei eingesetztem Messer einen Kontakt der Messerschneiden mit der Innenseite, d. h. der Ringseite, des Schleifringes 3 ermöglichen. Dies geht besonders deutlich aus Fig. 1 hervor, wo ein Teil des Schleifringes 3 im Schlitz 7 erkennbar ist.The slots 6 and 7 are arranged in the disks 12 and 14 so that, when the knife is inserted, they make contact of the knife edges with the inside, ie. H. the ring side, the slip ring 3. This can be seen particularly clearly from FIG. 1, where part of the slip ring 3 can be seen in the slot 7.

Die Verstelleinrichtungen 16 und 17 ermöglichen eine Einstellung des Schlitzes 6 bzw. 7 in der Relation zur Innenfläche des Schleifringes 3, so daß dadurch ein Nachstellen möglich ist.The adjusting devices 16 and 17 enable the slits 6 and 7 to be adjusted in relation to the inner surface of the slip ring 3, so that readjustment is possible as a result.

Die Innenseite des Deckels 11 ist mit einer umlaufenden Dichtung 18 versehen, die bei geschlossenem Deckel 11 an der Stirnseite 22 des Gehäuses 1 zur Anlage kommt. Weiterhin sind im unteren Bereich des Gehäuses 1 Wasserstandssichtfenster 20 und 21 angeordnet, die die Kontrolle der Höhe des Wasserspiegels innerhalb des Gehäuses ermöglichen. Das Wasser kann in das Gehäuse über einen Wassereinfüllanschluß 19 eingefüllt werden und ein entsprechender Wasserabflußanschluß ist aus der Zeichnung nicht erkennbar und ist im unteren Bereich des Gehäuses 1 vorgesehen.The inside of the cover 11 is provided with a circumferential seal 18 which comes to rest on the end face 22 of the housing 1 when the cover 11 is closed. Furthermore, 1 water level viewing window 20 and 21 are arranged in the lower region of the housing, which control the height of the water level allow inside the housing. The water can be filled into the housing via a water filler connection 19 and a corresponding water outlet connection cannot be seen from the drawing and is provided in the lower region of the housing 1.

Die Wirkungsweise dieser Einrichtung ist wie folgt:This device works as follows:

Ein Messer wird bei dem in Fig. 1 dargestellten Ausführungsbeispiel in den Schlitz 7 und damit in die Messerführung 8 eingesetzt und die Schnittkante des Messers wird nun gegen die Innenseite des Schleifringes 3 gedrückt. Der Schleifring 3 besteht aus flexiblem Material, wobei auch die Trommel 2 aus relativ flexiblem Material, z. B. Kunststoff, bestehen kann. Die zu schleifende Fläche des Messers kann nunmehr bequem an die Innenseite des Schleifringes 3 angedrückt werden und diese paßt sich der Form der Schnittfläche des zu schleifenden Objektes leicht an.In the exemplary embodiment shown in FIG. 1, a knife is inserted into the slot 7 and thus into the knife guide 8 and the cutting edge of the knife is now pressed against the inside of the slip ring 3. The slip ring 3 is made of flexible material, with the drum 2 made of relatively flexible material, e.g. B. plastic can exist. The surface of the knife to be ground can now be conveniently pressed against the inside of the slip ring 3 and this easily adapts to the shape of the cut surface of the object to be ground.

Durch die richtige Feinheit der Körnung und durch das entsprechende Schleifmedium, mit dem das Schleifverfahren stattfindet, wird die Schnittfläche sozusagen "geläppt", wodurch eine sehr feine Schneide entsteht.With the correct fineness of the grit and the appropriate grinding medium with which the grinding process takes place, the cut surface is "lapped", so to speak, which results in a very fine cutting edge.

Damit die andere Seite der Schneide auch geschliffen werden kann, wird anschließend der Schlitz 6 benutzt. Der Schlitz 6 bleibt so lange geschlossen, bis durch Betätigen des Drehrichtungsschalters 5 der eigentliche Schleifring 3 entgegengesetzt angetrieben wird, d. h. nunmehr im Uhrzeigersinn umläuft und damit auch bei dem in den Schlitz 6 und die Messerführung 9 eingesetzten Messer einen schleifenden Schliff erzeugt. Durch Betätigen des Drehrichtungsschalters 5 wird gleichzeitig die Sicherheitsplatte 10 mit umgestellt, d. h. die beiden Bauteile 5 und 10 sind so miteinander gekoppelt, daß immer nur die zweckentsprechende Schlitzöffnung frei ist. Hierbei kann so vorgegangen werden, daß dann, wenn der Motor 4 ausgeschaltet ist und damit der Drehrichtungsschalter 5 bei der Anordnung gemäß Fig. 1 auf Null steht, die Sicherheitsplatte 10 beide Schlitze 6 und 7 verschließt.The slot 6 is then used so that the other side of the cutting edge can also be ground. The slot 6 remains closed until the actual slip ring 3 is driven in the opposite direction by actuating the direction of rotation switch 5, ie now rotates clockwise and thus also in the slot 6 and the knife guide 9 knives used creates a grinding cut. By actuating the direction of rotation switch 5, the safety plate 10 is also changed over, ie the two components 5 and 10 are coupled to one another in such a way that only the appropriate slot opening is free. The procedure here can be such that when the motor 4 is switched off and the direction of rotation switch 5 in the arrangement according to FIG. 1 is zero, the security plate 10 closes both slots 6 and 7.

Claims (12)

  1. A grinding device for knives with a revolvingly driven grinding ring (3) arranged in a housing (1), the housing (1) being closed at its front side by a cover (11) and comprising an opening as means of access for the article to be ground, characterized in that the grinding ring (3) is carried by a drum (2) arranged inside the housing (1) and in that two knife guides (8, 9) are provided inside the housing (1) in the area of the grinding surface of the grinding ring (3) in such a way that, when a knife is inserted, the back of the knife is supported on the knife guides (8, 9) and the knife blade comes to rest against the inner annular surface of the grinding ring (3) in such a way that, when a knife is inserted, the blade comes into oblique contact with the grinding surface of the grinding ring (3).
  2. A grinding device according to claim 1, characterized in that the grinding ring (3) is of flexible construction.
  3. A grinding device according to claim 1 or claim 2, characterized in that the grinding ring (3) is carried easily replaceably by a driven drum (2).
  4. A grinding device according to any one of the preceding claims, characterized in that the knife guides (8, 9) are adjustable with respect to the grinding surface of the grinding ring (3).
  5. A grinding device according to any one of the preceding claims, characterized in that the knife guides (8, 9) are arranged on the inside of the grinding ring (3) and the running direction of the grinding ring (3) is reversible.
  6. A grinding device according to claim 5, characterized in that reversal of the running direction of the grinding ring (3) is effected via an externally operable change-over switch (5) of a drive motor (4).
  7. A grinding device according to claim 6, characterized in that a safety plate (10) is coupled for rotation to the change-over switch (5) in such a way that one or other of the knife guides (8, 9) is closed by the safety plate (10) depending on the selected direction of rotation of the grinding ring (3).
  8. A grinding device according to any one of the preceding claims, characterized in that the knife guides (8, 9) are of V-shaped construction.
  9. A grinding device according to any one of the preceding claims, characterized in that the drum (2) carrying the grinding ring (3) is of substantially closed construction except for the front opening.
  10. A grinding device according to any one of the preceding claims, characterized in that the knife guides (8, 9) have a length greater than the width of the grinding surface of the grinding ring (3).
  11. A grinding device according to any one of the preceding claims, characterized in that the housing (1) is provided with a water feed connection (19).
  12. A grinding device according to claim 11, characterized in that water level windows (20, 21) are provided in the housing.
EP90124014A 1990-02-12 1990-12-13 Grinding device for knifes Expired - Lifetime EP0442083B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90124014T ATE103521T1 (en) 1990-02-12 1990-12-13 KNIFE GRINDING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9000335 1990-02-12
NL9000335A NL9000335A (en) 1990-02-12 1990-02-12 GRINDING DEVICE FOR GRINDING KNIVES.

Publications (2)

Publication Number Publication Date
EP0442083A1 EP0442083A1 (en) 1991-08-21
EP0442083B1 true EP0442083B1 (en) 1994-03-30

Family

ID=19856580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124014A Expired - Lifetime EP0442083B1 (en) 1990-02-12 1990-12-13 Grinding device for knifes

Country Status (5)

Country Link
US (1) US5133157A (en)
EP (1) EP0442083B1 (en)
AT (1) ATE103521T1 (en)
DE (2) DE9005051U1 (en)
NL (1) NL9000335A (en)

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CN109894933A (en) * 2019-04-14 2019-06-18 肖玉忠 A kind of portable sharpening machine

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US4974370A (en) * 1988-12-07 1990-12-04 General Signal Corp. Lapping and polishing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110281099A (en) * 2019-06-21 2019-09-27 宁波爵盛科技有限公司 A kind of grinding device of iron hoop
CN110281099B (en) * 2019-06-21 2021-03-30 宁波爵盛科技有限公司 Grinding device for iron ring

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EP0442083A1 (en) 1991-08-21
DE59005204D1 (en) 1994-05-05
DE9005051U1 (en) 1990-08-16
NL9000335A (en) 1991-09-02
US5133157A (en) 1992-07-28
ATE103521T1 (en) 1994-04-15

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