US3861246A - Sharpening device - Google Patents

Sharpening device Download PDF

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Publication number
US3861246A
US3861246A US453422A US45342274A US3861246A US 3861246 A US3861246 A US 3861246A US 453422 A US453422 A US 453422A US 45342274 A US45342274 A US 45342274A US 3861246 A US3861246 A US 3861246A
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US
United States
Prior art keywords
sharpening
plates
recess
pivot means
elements
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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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US453422A
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English (en)
Inventor
Campbell E Waller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wiltshire Consolidated Ltd
McPhersons Ltd
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Individual
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Publication of US3861246A publication Critical patent/US3861246A/en
Assigned to MCPHERSON'S LIMITED reassignment MCPHERSON'S LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WILTSHIRE CONSOLIDATED LIMITED
Assigned to WILTSHIRE CONSOLIDATED LIMITED reassignment WILTSHIRE CONSOLIDATED LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WILTSHIRE CUTLERY CO. PTY. LTD.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • ABSTRACT A blade sharpening device comprising two overlappimg plate-like elements, each defining a' respectiveparticular, the pivotal axes are arranged so that the angular relationship between adjacent faces of the two plates varies in accordance with a change in the relative pivotal positions of those plates.
  • This invention relates-to sharpening devices such as -those used .for maintaining a cutting edge on a knife blade, and-althoughthe invention has other applications it will be convenient todescribe it in relation to knife sharpeners.
  • the invention is applicable to any sharpening device which includes two or more sharpening elements relativelyarranged to act on a knife blade so as to treat opposite sides thereof to create or sharpen the cutting edge of the blade.
  • typical sharpeningdevice of that type includes a pair of elements mounted in or on a support structure, whichmay be formed of a plastics material. Each element is at least partially made from a relatively hard material such as tungsten carbide, or
  • an abrasive material has at least one but preferably two edges arranged .to remove material from .a knife blade and thereby function to sharpen that blade.
  • the two elements are arranged in crossed relationship so that a suitable sharpening angle is formed between their respective sharpening edges. That is, a sharpening recess of /-shape isdefined between the two elements,
  • a knife blade is sharpened by locationof the blade' cutting edge within the apex region of that recess and then moving the blade longitudinally across the sharpening elements.
  • the overlapping sharpening elements which are usually in the form of plates, are each individually pivoted to the associated where these features are illustrated in preferred form.
  • FIG. 1 is alongitudinal cross-sectional view of a typical scabbard to which a sharpening device in accordance with the invention may be applied, and showing one particular embodiment of the sharpening device.
  • FIG. 2 is an enlarged cross-sectional view taken along lineII-II of FIG. 1.
  • FIG. 3 is a view similar to FIG. 2 but showing the sharpening elements pivoted away from a rest or neutral position.
  • FIG. 4 is a cross-sectional view taken along line -IV-IV of FIG. 3.
  • FIG. 5 is a plan view of one sharpening element of the deivce shown in FIG. 3, but modified to include biasing means.
  • FIG. 6 is a view similar to FIG. 5 but showing the biasing means flexed to impose a returning force on the sharpening element. 7
  • FIG. 7 is a view similar to FIG. 2 and showing an alternative form of sharpening device.
  • FIG. 1 is intended to show a typical applicationof the sharpening device, and'does not show the only form of scabbard with which 'thedevice can be used. Nevertheless, the particular scabbard shown has been found to have certain practicaladvantages as are fully explained in Australian Patent'application 36708/71.
  • the scabbard shown in FIG. 1 includes a housing 2 having a knife receiving passage 3 defined therein.
  • An access opening 4 is provided at one end of the housing 2, and thesharpening device 5 is supported by a carriermember 6 within the passage 3 so as to be located'adjacent to the opening 4.
  • the carrier member 6 is pivotally connected to the housing 2 at a position 7 remote from the access opening 4, and a spring 8 functions to -bias the carrier member 6 towardsan upper wall 9 of the housing 2. In thedrawingflthe carrier member 6 is I shown in the rest position, but it can be pushed down support structure.
  • each pivot is located on a respective oppposite side of the sharpening recess and is disposed so that the plates will swing generally in the direction of movement of a knife blade engaged in the sharpening recess and moved therethrough for sharpening.
  • the axis of each pivot extends substantially parallel to a plane containing the hsarpening recess e.g., the plane of the two overlapping surfaces of the plates when those surfaces are parallel and abutting.
  • Resilient means may be provided to urge the plates into a rest position, but that is not essential.
  • a reaction member 11 is pivotally mounted on the carrier member 6 ma position 12, and functions to form a guide for a knife blade and to also react with the upper wall 9 so as to assist in initial insertion of a knife blade into the passage 3. That is, a part 13 of the member 11 is engaged by the upper edge of the knife blade and is thereby forced against the wall 9 so that a downwardly directed reaction force is transfered to the carrier member 6 through the pivot connection 12.
  • the device 5 includes two sharpening elements 14 pivotally connected to the carrier member 6, which forms the support structure for the device 5.
  • Each element 14 may be formed of a plate or block of tungsten carbide or other suitable material, or combination of materials, but they are preferably plate-like elements as shown in the drawings.
  • the two plates 14 are relatively disposed to define a cutting recesslS as previously described, and the edge surface 16 defining that recess are sharpening edges of the plates 14.
  • each plate 14 is secured by adhesive or other appropriate means to a mounting section 17 which is pivotally connected to the carrier member 6 through a pin or trunnions 18. As shown in FIG. 2, the axes of the two pivots extend substantially parallel to each other and the broad faces of the plates 14. Also, each pivot is located remote from the sharpening edge 16 of the associated plate 14. Ribs or walls 19 and 21 are disposed on opposite sides of the plates 14 to limit their swinging movement as shown in FIG. 4, but it will be appreciated that other forms of stop means may be employed.
  • any suitable biasing means may be provided to urge the plates l4'into a central position, orany other neutral position'as may be desired, and one particular arrangement is shown in FIGS. 5 and 6 (only one sharpening plate 14 is shown for convenience of illustration).
  • a leaf spring 22 is formed integral with or attached to each mounting section 17 and lo cates within an aperture 23 formed within the adjacent side wall 24 of the carrier member 6.
  • the spring 22 is caused to flex as shown in FIG. 6 and thereby imposes a returning force on the plate 14.
  • FIG. 7 A modified form of the invention is shown in FIG. 7, and for convenience of identification parts of that embodiment corresponding to parts of the FIGS. 1 to 4 embodiment, will be given like reference numerals, but of a higher series.
  • the principal distinction of the modified embodiment is that the pivotal axis of each pair of trunnions 1 18 extends substantially parallel to the sharpening edge 116 of the respective plate 114. With this arrangement, a constant sharpening angle is maintained within the recess 115 if the sharpening edges 1 16 are straight, as shown, regardless of the pivotal position of the plates 114. In the embodiment of FIGS. 1 to 4 however, the sharpening angle will vary with movement of the plates 114 on each side of the rest or neutral position, if the sharpening edges 116-are straight. Limit stops corresponding to stops 19- and '21 of the FIGS. 1 to 4 embodiment, are preferably provided in the FIG. 7 embodiment, but only the stop 119 is shown. In addition, the FIG. 7 embodiment may be varied to include biasing
  • the embodiments of the invention herein described are constructed so that the sharpening elements are operative to sharpen a knife blade during both forward and rearward movement of that blade relative to the sharpening device.
  • the invention can be applied to a knife scabbard of appropriate construction, such as those shown and described in Australian Patent No. 424,122 and Australian Patent application No. 36708/71.
  • a blade sharpening device including two sharpening elements each defining a respective sharpening edge, said elements being arranged in overlapping relationship so that said sharpening edges define a sharpening recess between them, and pivot means connecting each said element to a support structure to permit each said element to move relative to the other, the axis of each said pivot means extending in a direction such that the angular relationship between adjacent surfaces of said overlapping elements varies according to the relative pivotal positions of said elements.
  • a blade sharpening device including at least two sharpening plates each defining a respective sharpening edge, said plates being arranged in overlapping relationship with said sharpening edges extending angularly relative to each other so that a sharpening recess is defined between said edges, pivot means connecting each said plate independently of the other to a support structure to permit relative movement of said plates, the axis of each said pivot means extending substantially parallel of a plane containing said recess, and each said axis being located on a respective opposite side of said recess.
  • a device wherein the axes of said pivot means extend substantially parallel to each other.
  • each said pivot means extends substantially parallel to the general direction of the sharpening edge of its respective said sharpening element.
  • stop means is provided on each side of said sharpening elements to limit the degree of movement thereof about said pivot means.
  • biasing means acts on each said element to urge it into a rest position.
  • a knife scabbard including, a housing having a knife receiving passage defined therein; an access opening at one endof said passage; and a sharpening device mounted within said passage adjacent said opening; said sharpening device including, a blade sharpening device including two sharpening elements each defining a respective sharpening edge, said elements being arranged in overlapping relationship so that said sharpening edges define a sharpening recess between them, and pivot means connecting each said element to a support structure to permit each said element to move relative to the other, the axis of each said pivot means extending in a direction such that the angular relationship between adjacent surfaces of said overlapsaid sharpening edges extending angularly relative to each other so that a sharpening recess is defined between said edges, pivot means connecting each said plate independently of the other to a support structure to permit relative movement of said plates, the axis of each said pivot means extending substantially parallel of a plane containing said recess, and each said axis being located on a respective opposite side of said plates

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US453422A 1973-03-26 1974-03-21 Sharpening device Expired - Lifetime US3861246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPB273973 1973-03-26

Publications (1)

Publication Number Publication Date
US3861246A true US3861246A (en) 1975-01-21

Family

ID=3765658

Family Applications (1)

Application Number Title Priority Date Filing Date
US453422A Expired - Lifetime US3861246A (en) 1973-03-26 1974-03-21 Sharpening device

Country Status (8)

Country Link
US (1) US3861246A (ja)
JP (1) JPS5915784B2 (ja)
AU (1) AU462886B2 (ja)
CA (1) CA992322A (ja)
DE (1) DE2414580A1 (ja)
FR (1) FR2223140B1 (ja)
GB (1) GB1460051A (ja)
HK (1) HK31879A (ja)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041651A (en) * 1975-08-22 1977-08-16 Wiltshire Cutlery Company Proprietary Ltd. Knife sharpener
US4091691A (en) * 1976-11-30 1978-05-30 Wiltshire Cutlery Company Proprietary Ltd. Knife sharpener
US4502218A (en) * 1982-12-29 1985-03-05 Oy Fiskars Ab Blade sharpener insert for knife scabbard
EP0206700A1 (en) * 1985-06-14 1986-12-30 McPherson's Limited Knife sharpener
US4669337A (en) * 1985-06-14 1987-06-02 Mcpherson's Limited Knife sharpener
US4866845A (en) * 1988-03-22 1989-09-19 Mcevily John B Knife holding and sharpening block
US4869027A (en) * 1988-01-11 1989-09-26 Mcevily John B Knife holding and sharpening cassette and knives therefor
US5494176A (en) * 1994-06-22 1996-02-27 Zallo; Silvio Child safe cutlery set holder
WO2000050193A1 (en) * 1999-02-26 2000-08-31 The Pampered Chef, Ltd. Sharpener sheath
US6117002A (en) * 1998-12-04 2000-09-12 Mcpherson's Limited Blade sharpener
US6626066B2 (en) * 2002-01-02 2003-09-30 Rudolf Koppe Folding sharpener tool
US20150031274A1 (en) * 2013-07-24 2015-01-29 Bar 3 Products Group, Llc Adjustable knife holder adapted to maintain sharpness of a knife blade and method of manufacturing the adjustable knife holder
US9545703B1 (en) * 2015-08-10 2017-01-17 Razor Edge Systems, Inc. Miniature knife sharpening apparatus

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU177925B (en) * 1975-12-04 1982-01-28 Wiltshire Cutlery Co Pty Knife grinding machine
NZ184477A (en) * 1976-07-28 1980-11-14 Wiltshire Cutlery Co Pty Knife-sharpening device spaced sharpening plates
FR2556638B1 (fr) * 1983-12-20 1987-06-19 Alsacienne Constr Mat Tex Appareil a affuter, pour l'affutage de la lame de coupe sur une machine a tisser le velours double nappe
JPS60199721A (ja) * 1984-03-26 1985-10-09 Rhythm Watch Co Ltd 車両用窓の自動開閉装置
JPS61141118U (ja) * 1985-02-25 1986-09-01
FR3109110B1 (fr) * 2020-04-14 2022-04-29 Seb Sa Fourreau aiguiseur adapte pour recevoir un couteau et combinaison d’un tel fourreau et d’un couteau
FR3109111B1 (fr) * 2020-04-14 2023-03-03 Seb Sa Fourreau aiguiseur adapte a recevoir un couteau et combinaison d’un tel fourreau et d’un couteau
FR3109112B1 (fr) * 2020-04-14 2022-05-06 Seb Sa Combinaison d’un fourreau et d’un couteau

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767530A (en) * 1954-09-01 1956-10-23 Leo A Paldanius Knife sheath
US2893178A (en) * 1958-04-18 1959-07-07 John E O'riordan Automatic knife sharpener and holder
US3064393A (en) * 1960-03-08 1962-11-20 Arthur M Chasan Automatic knife sharpener
US3676961A (en) * 1969-05-07 1972-07-18 Wiltshire Cutlery Co Pty Knife scabbard or holder
US3774350A (en) * 1970-12-24 1973-11-27 Wiltshire Cutlery Co Pty Knife scabbard or holder

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0741029Y2 (ja) * 1990-04-18 1995-09-20 株式会社サンミューロン 表示器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767530A (en) * 1954-09-01 1956-10-23 Leo A Paldanius Knife sheath
US2893178A (en) * 1958-04-18 1959-07-07 John E O'riordan Automatic knife sharpener and holder
US3064393A (en) * 1960-03-08 1962-11-20 Arthur M Chasan Automatic knife sharpener
US3676961A (en) * 1969-05-07 1972-07-18 Wiltshire Cutlery Co Pty Knife scabbard or holder
US3774350A (en) * 1970-12-24 1973-11-27 Wiltshire Cutlery Co Pty Knife scabbard or holder

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041651A (en) * 1975-08-22 1977-08-16 Wiltshire Cutlery Company Proprietary Ltd. Knife sharpener
US4091691A (en) * 1976-11-30 1978-05-30 Wiltshire Cutlery Company Proprietary Ltd. Knife sharpener
US4502218A (en) * 1982-12-29 1985-03-05 Oy Fiskars Ab Blade sharpener insert for knife scabbard
EP0206700A1 (en) * 1985-06-14 1986-12-30 McPherson's Limited Knife sharpener
US4669337A (en) * 1985-06-14 1987-06-02 Mcpherson's Limited Knife sharpener
US4869027A (en) * 1988-01-11 1989-09-26 Mcevily John B Knife holding and sharpening cassette and knives therefor
US4866845A (en) * 1988-03-22 1989-09-19 Mcevily John B Knife holding and sharpening block
US5494176A (en) * 1994-06-22 1996-02-27 Zallo; Silvio Child safe cutlery set holder
US6117002A (en) * 1998-12-04 2000-09-12 Mcpherson's Limited Blade sharpener
WO2000050193A1 (en) * 1999-02-26 2000-08-31 The Pampered Chef, Ltd. Sharpener sheath
US6224475B1 (en) * 1999-02-26 2001-05-01 The Pampered Chef, Ltd. Sharpener sheath
US6626066B2 (en) * 2002-01-02 2003-09-30 Rudolf Koppe Folding sharpener tool
US20150031274A1 (en) * 2013-07-24 2015-01-29 Bar 3 Products Group, Llc Adjustable knife holder adapted to maintain sharpness of a knife blade and method of manufacturing the adjustable knife holder
US9452508B2 (en) * 2013-07-24 2016-09-27 Bar 3 Products Group, Llc Adjustable knife holder adapted to maintain sharpness of a knife blade and method of manufacturing the adjustable knife holder
US9545703B1 (en) * 2015-08-10 2017-01-17 Razor Edge Systems, Inc. Miniature knife sharpening apparatus

Also Published As

Publication number Publication date
DE2414580A1 (de) 1974-10-17
HK31879A (en) 1979-05-18
CA992322A (en) 1976-07-06
AU6706074A (en) 1975-07-10
JPS5915784B2 (ja) 1984-04-11
JPS5026190A (ja) 1975-03-19
FR2223140A1 (ja) 1974-10-25
FR2223140B1 (ja) 1978-03-24
GB1460051A (en) 1976-12-31
AU462886B2 (en) 1975-07-10

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STCK Information on status: patent revival

Free format text: ABANDONED - RESTORED

AS Assignment

Owner name: MCPHERSON'S LIMITED, 500 COLLINS STREET, MELBOURNE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WILTSHIRE CONSOLIDATED LIMITED;REEL/FRAME:004747/0371

Effective date: 19850627

Owner name: MCPHERSON'S LIMITED, AUSTRALIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WILTSHIRE CONSOLIDATED LIMITED;REEL/FRAME:004747/0371

Effective date: 19850627

Owner name: WILTSHIRE CONSOLIDATED LIMITED

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WILTSHIRE CUTLERY CO. PTY. LTD.;REEL/FRAME:004735/0725

Effective date: 19870624