EP1049568A1 - Device for sharpening knives, scissors or other cutting tools - Google Patents
Device for sharpening knives, scissors or other cutting toolsInfo
- Publication number
- EP1049568A1 EP1049568A1 EP99962148A EP99962148A EP1049568A1 EP 1049568 A1 EP1049568 A1 EP 1049568A1 EP 99962148 A EP99962148 A EP 99962148A EP 99962148 A EP99962148 A EP 99962148A EP 1049568 A1 EP1049568 A1 EP 1049568A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- grinding
- carrier
- shaped
- grinding element
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
- B24D15/08—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors
- B24D15/081—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors with sharpening elements in interengaging or in mutual contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
- B24D15/065—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges for sharpening both knives and scissors
Definitions
- the invention relates to a device for sharpening knives, scissors or similar cutting tools with at least one abrasive grinding element, which is arranged in a housing to avoid spring force.
- a knife sharpener which comprises two, in a plastic housing and offset against each other, rotatably mounted grinding wheels in the form of grinding wheels, which can deflect resiliently.
- the knife edge to be sharpened is introduced from above into the gap formed by the two circular grinding bodies, transversely to the longitudinal extent of the housing, and is moved relative to the grinding bodies with the application of a compressive force.
- the invention is based on the task of creating a grinding device of the type defined in the introduction, which avoids the foregoing Disadvantages described allows a simple grinding of knives, scissors or similar cutting tools, especially if these cutting tools have a cutting edge that deviates from a straight line.
- the solution to this problem by the invention is characterized in that the grinding element is in the form of a strip and is arranged on a sheet-shaped carrier which in turn is guided resiliently on the housing.
- the grinding element Due to the strip-shaped design of the grinding element and its arrangement on a leaf-shaped carrier which is guided resiliently on the housing, it is possible to guide the blade of the cutting tool relative to the grinding element at the desired grinding angle, the movement being both in the longitudinal direction of the grinding element and transversely this includes extending component. Due to the resilient guidance of the grinding element on the housing, the grinding element is able to yield to a limited extent, so that the grinding surface adapts to the existing cutting edge geometry of the cutting tool. In this way, cutting tools with a cutting edge that deviates from a straight line, in particular a concave or convexly curved cutting edge - also with a curvature that changes along the cutting edge - can be reliably ground.
- the leaf-shaped carrier is resiliently guided at least at its ends via a spring on the housing, which results in a particularly simple construction.
- the leaf-shaped carrier can be formed as a part which is molded onto one end of the strip-shaped grinding element and is resiliently guided in the housing via a spring. This configuration results in a particularly simple design.
- the leaf-shaped carrier is fixed to the housing and designed as a spring element.
- additional springs are omitted, so that the number of components is reduced.
- the invention also proposes to make the working surface of the strip-shaped grinding element convex transversely to its longitudinal extent. This results in an improved adaptation of the working surface of the grinding element to a cutting edge geometry that deviates from a straight line.
- a plurality of grinding elements are resiliently guided on the housing in parallel and at a distance from one another by means of a respective carrier.
- Such a plurality of grinding elements shortens the time required for grinding a cutting tool without impeding the possibility of adapting the individual grinding elements to the respective cutting edge geometry, since each grinding element is guided resiliently on the housing independently of the others.
- the working surfaces are designed in cross-section corresponding to the serrated edge of the respective cutting edge of the cutting tool.
- the resiliently mounted grinding elements enable this cutting edge geometry to be moved transversely to the longitudinal axis of the grinding elements.
- each strip-shaped grinding element with its ends on a tongue-shaped carrier and to combine several tongue-shaped carriers to form a carrier unit which can be used as a structural unit in the housing. This results in the possibility of creating an assembly comprising the grinding elements, which can be used in differently designed housings.
- the carrier unit is arranged non-rotatably on a base plate, which is in each case provided with guides for the free ends of the tongue-shaped carriers, in order to avoid bending or other damage to the grinding elements even when the grinding elements are subjected to greater loads.
- the grinding elements can be designed to be elastically resilient between their ends, each of which is fixed to a tongue-shaped carrier.
- the elasticity of the grinding elements is added to the spring properties of the tongue-shaped carrier.
- the elastic deformation of the grinding elements can be limited by one stop each.
- This stop is preferably formed centrally on the support unit.
- the invention results overall in a device for grinding knives, scissors or similar cutting tools which, despite its simple and inexpensive construction, enables reliable grinding of cutting tools, even if they have a cutting geometry that deviates from a straight line.
- FIG. 1 is a front view of a first embodiment
- FIG. 2 is a side view, partially in longitudinal section, of the embodiment of FIG. 1,
- FIG. 3 shows an enlarged cross section according to section line III-III in FIG. 2,
- FIG. 4 shows an enlarged partial section according to the upper right corner in FIG. 2,
- FIG. 5 shows the functional principle of the device on the basis of the illustration according to FIG. 3 when sharpening a knife with a concave curved cutting edge
- FIG. 6 shows a representation corresponding to FIG. 5 when sharpening a knife with a convexly curved cutting edge
- 7 shows a further illustration of the functional principle corresponding to FIGS. 5 and 6 when grinding a knife with a serrated edge using a second embodiment of the device
- FIG. 8 shows a representation corresponding to FIG. 7 when grinding a knife with a modified serrated edge
- FIG. 9 is a side view, partly in longitudinal section, of a third exemplary embodiment of the device.
- FIG. 11 is an enlarged view of the upper left corner of FIG. 9,
- FIG. 12 shows a cross section corresponding to FIG. 10 when using a modified housing
- FIG. 13 shows a longitudinal section through the assembly containing the grinding elements according to FIGS. 9 to 12,
- FIG. 14 is a plan view of FIG. 13,
- FIG. 13 is an end view of FIG. 13,
- 16c is an end view of a grinding element used according to FIG. 13,
- 17b is a plan view
- 17c is a bottom view of the carrier unit used in FIG. 13, 18a shows a longitudinal section
- Fig. 18c is a bottom view of the base plate shown in Fig. 13.
- the first exemplary embodiment of the grinding device shown in FIGS. 1 to 6 comprises a housing 1 in which a plurality of strip-shaped grinding elements 2 are arranged in parallel and at a distance from one another in a resilient manner.
- Each grinding element 2 is arranged on a sheet-shaped carrier 3, which in the exemplary embodiment is molded onto one end of the strip-shaped grinding element 2.
- a spring 4 on the housing 1.
- this support takes place via an inner part 1 a arranged in the housing 1.
- the housing 1 or its inner part 1a is provided with four feet 1b which are provided with a non-slip contact surface.
- FIGS. 5 and 6 analogous to FIG. 3, when grinding a knife, the grinding elements 2, each with a convex working surface, are able, due to their individual cushioning, to adapt to different contours of the cutting edge geometry that deviate from a straight line.
- FIG. 5 shows the grinding of a knife blade with a concave cutting edge geometry
- FIG. 6 a knife blade with a convex cutting edge geometry is shown.
- the grinding of knife blades is shown with a wavy contour of the cutting edge, using devices which are described below.
- the grinding elements 2 have a contour adapted to the wave shape of the cutting edge.
- a second embodiment of the device which in turn comprises a housing 1 b provided with feet 1 b.
- a carrier unit 5 is inserted into this housing 1 by means of a base plate 6.
- the carrier unit 5 accommodating three grinding elements 2 in the exemplary embodiment forms together with the base plate 6, an assembly which can be used in accordance with FIGS. 10 and 12 in differently designed housing 1 in a simple manner.
- FIGS. 13 to 15; 16a to 18c show their individual parts.
- grinding elements 2 are used, the working surface of which is convex and which are bent at right angles at their ends. With these bent ends, the grinding elements 2 are inserted into corresponding recesses 5a of tongue-shaped carriers 5b, which start from a center piece 5c and thus form a carrier unit 5.
- Each tongue-shaped carrier 5b can move resiliently with respect to the center piece 5c due to its shape.
- the arrangement of the grinding elements 2 on the tongue-shaped carriers 5b of the carrier unit 5 results in an elastic spring possibility for each individual grinding element 2, as can be seen in particular from FIG. 13.
- the center piece 5c of the carrier unit 5 is provided with a stop bar 5d running transversely to the grinding elements 2.
- the entire carrier unit 5 is arranged on a base plate 6, which is shown as an individual part in FIGS. 18a to 18c.
- the base plate 6 comprises a hollow pin 6a protruding from its upper side, into which, according to FIG. 13, a pin 5e located in the center piece 5c of the carrier unit 5 engages.
- the base plate 6 is provided at its ends with guide strips 6b, on which the free ends of the supports 5b are guided in a vertical direction, which are formed with guide grooves 5f for this purpose.
- the base plate 6 has locking lugs 6c, with the aid of which the structural unit is inserted into a housing 1, as shown in FIGS. 9 and 11.
- the configuration of the structural unit described above makes it possible to use different housings 1, as is illustrated by FIGS. 10 and 12. LIST OF REFERENCE SIGNS
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Scissors And Nippers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19854496 | 1998-11-25 | ||
DE19854496A DE19854496C1 (en) | 1998-11-25 | 1998-11-25 | Sharpener for knife blades |
PCT/EP1999/008974 WO2000030811A1 (en) | 1998-11-25 | 1999-11-20 | Device for sharpening knives, scissors or other cutting tools |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1049568A1 true EP1049568A1 (en) | 2000-11-08 |
EP1049568B1 EP1049568B1 (en) | 2003-02-12 |
Family
ID=7889051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99962148A Expired - Lifetime EP1049568B1 (en) | 1998-11-25 | 1999-11-20 | Device for sharpening knives, scissors or other cutting tools |
Country Status (8)
Country | Link |
---|---|
US (1) | US6454642B1 (en) |
EP (1) | EP1049568B1 (en) |
JP (1) | JP2002530214A (en) |
AT (1) | ATE232438T1 (en) |
DE (2) | DE19854496C1 (en) |
ES (1) | ES2191482T3 (en) |
PT (1) | PT1049568E (en) |
WO (1) | WO2000030811A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050096731A1 (en) * | 2002-07-11 | 2005-05-05 | Kareen Looi | Cell seeded expandable body |
EP1568443B1 (en) * | 2004-02-21 | 2007-05-16 | Flügel CSS GmbH & Co. KG | Knife sharpener |
US7264542B1 (en) * | 2006-02-28 | 2007-09-04 | Ronald P. Leyva | Knife sharpening method and system |
US20100304646A1 (en) * | 2009-05-15 | 2010-12-02 | Michael Lytinas | Blade sharpening device |
EP2616021B1 (en) * | 2010-09-17 | 2014-04-16 | Thomas Menzel E | Internal gastric bander for obesity |
US8678882B1 (en) * | 2013-06-26 | 2014-03-25 | Edgecraft Corporation | Combination sharpener assembly |
DE102014019732A1 (en) | 2014-06-11 | 2015-12-17 | Flügel CSS GmbH & Co. KG | sharpener |
DE102014108203A1 (en) | 2014-06-11 | 2015-12-17 | Flügel CSS GmbH & Co. KG | sharpener |
US9216487B1 (en) | 2014-11-14 | 2015-12-22 | Darex, Llc | Manual tool sharpener with moveable abrasive surface |
JP6687554B2 (en) * | 2017-01-31 | 2020-04-22 | 京セラ株式会社 | Blade polishing tool |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH186616A (en) * | 1936-02-13 | 1936-09-30 | Hummel Karl Jr | Strop. |
US2241412A (en) * | 1939-08-09 | 1941-05-13 | Alexis E Meade | Knife sharpener |
US4759153A (en) * | 1986-07-14 | 1988-07-26 | Morton Cohen | Method and apparatus for sharpening a serrated cutting edge |
DE3833065A1 (en) * | 1988-09-29 | 1990-04-12 | Oscar Fluegel & Sohn | KNIFE SHARPENER |
US5976002A (en) * | 1998-01-15 | 1999-11-02 | Keough; Gilbert | Knife sharpener |
-
1998
- 1998-11-25 DE DE19854496A patent/DE19854496C1/en not_active Expired - Fee Related
-
1999
- 1999-11-20 JP JP2000583677A patent/JP2002530214A/en active Pending
- 1999-11-20 AT AT99962148T patent/ATE232438T1/en not_active IP Right Cessation
- 1999-11-20 DE DE59904272T patent/DE59904272D1/en not_active Expired - Lifetime
- 1999-11-20 US US09/601,055 patent/US6454642B1/en not_active Expired - Fee Related
- 1999-11-20 PT PT99962148T patent/PT1049568E/en unknown
- 1999-11-20 WO PCT/EP1999/008974 patent/WO2000030811A1/en active IP Right Grant
- 1999-11-20 EP EP99962148A patent/EP1049568B1/en not_active Expired - Lifetime
- 1999-11-20 ES ES99962148T patent/ES2191482T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0030811A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2000030811A1 (en) | 2000-06-02 |
PT1049568E (en) | 2003-06-30 |
ATE232438T1 (en) | 2003-02-15 |
US6454642B1 (en) | 2002-09-24 |
DE59904272D1 (en) | 2003-03-20 |
DE19854496C1 (en) | 1999-12-09 |
JP2002530214A (en) | 2002-09-17 |
ES2191482T3 (en) | 2003-09-01 |
EP1049568B1 (en) | 2003-02-12 |
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