GB2113137A - Knives - Google Patents
Knives Download PDFInfo
- Publication number
- GB2113137A GB2113137A GB08234441A GB8234441A GB2113137A GB 2113137 A GB2113137 A GB 2113137A GB 08234441 A GB08234441 A GB 08234441A GB 8234441 A GB8234441 A GB 8234441A GB 2113137 A GB2113137 A GB 2113137A
- Authority
- GB
- United Kingdom
- Prior art keywords
- major
- minor
- edge
- scallops
- knife
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B9/00—Blades for hand knives
- B26B9/02—Blades for hand knives characterised by the shape of the cutting edge, e.g. wavy
Abstract
A knife, in particular a bread knife, has a cutting edge formed by a series of major scallops (12), each major scallop containing a number, for example three, of minor scallops (13), each scallop having an arcuate cutting edge over its peripheral length. <IMAGE>
Description
SPECIFICATION
Improvement in knives
This invention relates to knives, and in particular to bread-slicing knives, hereinafter referred to occasionally as bread slicers.
Bread slicers are conventionally made with a straight serrated edge, the serrations being sharp and closely spaced so that the slicer performs a sawing action on the bread. This however tends to produce crumbs.
Bread slicers are also well known of the type having a cutting edge formed by a series of scallops, i.e. arcuate recesses, along the blade edge, each recess having a cutting edge over its peripheral length. This construction results in a vibrating action in the plane of the blade as the edge of the slicer is moved across a loaf of bread, and this vibratory action assists in cutting.
It has been proposed to combine the scalloped edge and the serrated edge, but such a construction does not remove the disadvantage of a serrated edge as described above.
According to the present invention there is provided a knife having a scalloped cutting edge, said edge comprising a series of major scallops, each said major scallop containing a plurality of minor scallops.
One form of knife according to the invention is illustrated in the accompanying drawing in which:
Figure 1 is a side elevation of the knife;
Figure 2 is a side elevation of a portion of the knife of Figure 1 to an enlarged scale;
Figure 3 is an elevation of the knife portion of
Figure 2 as seen from the opposite side, and
Figure 4 is a cross section through the knife.
The knife, or bread slicer, 10 shown in the drawing, has a handle 9 and a blade 11, the blade having a cutting edge formed by a contiguous series of major scallops 12, each major scallop being made up of a contiguous series of minor scallops 13. Although three minor scallops is the proposed number in each major scallop, the number may be less than or greater than three, but if the number increases much above three, the benefits of the invention are reduced.
As seen in side view, with the edge directed upwardly, the knife edge has a range of major peaks 14 equidistantly spaced apart, with two minor peaks 15, between and below the major peaks, the major and minor peaks defining the ends of the minor scallops. All the peaks are nearly equidistantly spaced apart, and all are smoothly rounded. Thus within each major scallop, an imaginary circular arc can be drawn from one major peak 14 to the next major peak, on which the two minor peaks 1 5 lie.
By way of example each pair of adjacent major peaks can be spaced apart by 0.311 inch (7.9 mm), whereas the spacing between the two minor peaks in each major scallop is 0.110 inch (2.8 mm), these minor peaks being equidistant from the major peaks. The radius of curvature of the cutting edge between adjacent minor peaks can be for example 0.047 inch (1.2 mm).
If one takes as a reference base line, a straight line A-A tangent to the cutting edge between adjacent minor peaks, the perpendicular distance from each major peak 14 to the line A-A is 0.058 inch (1.48 mm) and the perpendicular distance from each of the minor peaks 1 5 to the line A-A is 0.029 inch (0.74 mm). Moreover, the radius of a circular arc passing through the major peaks and to which line A-A is a tangent is 0.252 inch (6.4 mm).
As seen in the cross-section of Figure 4, the blade has a major chamfer 1 6 on each side extending over a distance of about 0.315 inch (8 mm) from the straight line which formed the knife edge before grinding. In addition, on one side of the blade as seen in Figure 3, the blade has a series of minor chamfers 17 produced by grinding the cutting edge of each minor scallop with a grinding wheel.
This knife construction has been shown to have an improved cutting action over the simple scalloped edge without the disadvantages of the serrated edge. It is believed that this advantage may result from a compound vibratory action produced by superimposing a vibratory action resulting from the minor scallops on a lower frequency vibratory action produced by the major scallops. These vibratory actions are cutting actions resulting from the multiplicity of cutting edges, as distinct from sawing actions produced by a multiplicity of saw teeth.
1. A knife having a scalloped cutting edge, said edge comprising a series of major scallops each said major scallop containing a plurality of minor scallops.
2. A knife according to claim 1 wherein each major scallop is defined by a contiguous series of three minor scallops.
3. A knife according to claim 1 wherein the minor scallops have cutting edges of substantially equal length.
4. A knife according to claim 2 wherein each minor scallop has a peak at each end and adjacent peaks are substantially equidistant from one another.
5. A knife according to claim 1 wherein the major scallops are arranged along said edge as d contiguous series.
6. A knife substantially as herein described w; reference to the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (6)
1. A knife having a scalloped cutting edge, said edge comprising a series of major scallops each said major scallop containing a plurality of minor scallops.
2. A knife according to claim 1 wherein each major scallop is defined by a contiguous series of three minor scallops.
3. A knife according to claim 1 wherein the minor scallops have cutting edges of substantially equal length.
4. A knife according to claim 2 wherein each minor scallop has a peak at each end and adjacent peaks are substantially equidistant from one another.
5. A knife according to claim 1 wherein the major scallops are arranged along said edge as d contiguous series.
6. A knife substantially as herein described w; reference to the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8137576 | 1981-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2113137A true GB2113137A (en) | 1983-08-03 |
Family
ID=10526578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08234441A Withdrawn GB2113137A (en) | 1981-12-12 | 1982-12-02 | Knives |
Country Status (14)
Country | Link |
---|---|
JP (1) | JPS58105781A (en) |
AU (1) | AU9133982A (en) |
BE (1) | BE895325A (en) |
DE (1) | DE3244550A1 (en) |
DK (1) | DK550982A (en) |
ES (1) | ES269102Y (en) |
FR (1) | FR2518004A1 (en) |
GB (1) | GB2113137A (en) |
GR (1) | GR77083B (en) |
IT (1) | IT1192545B (en) |
LU (1) | LU84528A1 (en) |
NL (1) | NL8204771A (en) |
NZ (1) | NZ202770A (en) |
ZA (1) | ZA829143B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2318318A (en) * | 1996-07-18 | 1998-04-22 | Long Shye Enterprise Co Ltd | Knife blade |
WO1999024228A1 (en) * | 1997-11-10 | 1999-05-20 | Axel Balke | Strip-shaped or reciprocating knife |
EP1479488A1 (en) * | 2002-02-15 | 2004-11-24 | Kai R & D Center Co., Ltd. | Cutter |
EP1510303A1 (en) * | 2003-09-01 | 2005-03-02 | Wmf Württembergische Metallwarenfabrik Ag | Knife |
WO2023239317A1 (en) * | 2022-06-06 | 2023-12-14 | Teknolojibicak Hassas Makine Bicaklari Ve Teknolojileri Sanayi Ticaret Limited Sirketi | A cutting element |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE286800T1 (en) | 2000-06-29 | 2005-01-15 | Kan Tech Gmbh | KNIFE |
JP2008154785A (en) * | 2006-12-23 | 2008-07-10 | Honda Electronic Co Ltd | Ultrasonic cutter apparatus |
DE202012003244U1 (en) | 2012-03-30 | 2012-05-07 | Ed. Wüsthof, Dreizackwerk KG | knife |
RU2635029C2 (en) * | 2015-12-14 | 2017-11-08 | Николай Николаевич Бурцев | "saha" knife |
WO2021229765A1 (en) * | 2020-05-14 | 2021-11-18 | 株式会社マサヒロ | Cutting tool |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1052860B (en) * | 1958-01-21 | 1959-03-12 | Omega Werk Hartmann & Co | Knives with coarse and fine grinds in the knife blade |
US3024533A (en) * | 1959-06-10 | 1962-03-13 | Nitsch Joseph Leonard | Cutting blade |
JPS4117646Y1 (en) * | 1964-12-14 | 1966-08-16 |
-
1982
- 1982-12-02 GB GB08234441A patent/GB2113137A/en not_active Withdrawn
- 1982-12-02 DE DE19823244550 patent/DE3244550A1/en not_active Withdrawn
- 1982-12-08 AU AU91339/82A patent/AU9133982A/en not_active Abandoned
- 1982-12-09 NL NL8204771A patent/NL8204771A/en not_active Application Discontinuation
- 1982-12-09 IT IT09568/82A patent/IT1192545B/en active
- 1982-12-10 LU LU84528A patent/LU84528A1/xx unknown
- 1982-12-10 GR GR70043A patent/GR77083B/el unknown
- 1982-12-10 DK DK550982A patent/DK550982A/en not_active Application Discontinuation
- 1982-12-10 ES ES1982269102U patent/ES269102Y/en not_active Expired
- 1982-12-10 NZ NZ202770A patent/NZ202770A/en unknown
- 1982-12-10 BE BE0/209714A patent/BE895325A/en not_active IP Right Cessation
- 1982-12-10 FR FR8220711A patent/FR2518004A1/en active Pending
- 1982-12-13 ZA ZA829143A patent/ZA829143B/en unknown
- 1982-12-13 JP JP57217137A patent/JPS58105781A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2318318A (en) * | 1996-07-18 | 1998-04-22 | Long Shye Enterprise Co Ltd | Knife blade |
GB2318318B (en) * | 1996-07-18 | 1998-11-04 | Long Shye Enterprise Co Ltd | Knife blade |
WO1999024228A1 (en) * | 1997-11-10 | 1999-05-20 | Axel Balke | Strip-shaped or reciprocating knife |
EP1479488A1 (en) * | 2002-02-15 | 2004-11-24 | Kai R & D Center Co., Ltd. | Cutter |
EP1479488A4 (en) * | 2002-02-15 | 2005-05-04 | Kai R&D Center Co Ltd | Cutter |
EP1510303A1 (en) * | 2003-09-01 | 2005-03-02 | Wmf Württembergische Metallwarenfabrik Ag | Knife |
WO2023239317A1 (en) * | 2022-06-06 | 2023-12-14 | Teknolojibicak Hassas Makine Bicaklari Ve Teknolojileri Sanayi Ticaret Limited Sirketi | A cutting element |
Also Published As
Publication number | Publication date |
---|---|
NZ202770A (en) | 1984-09-28 |
BE895325A (en) | 1983-06-10 |
FR2518004A1 (en) | 1983-06-17 |
ES269102Y (en) | 1984-01-01 |
NL8204771A (en) | 1983-07-01 |
GR77083B (en) | 1984-09-06 |
ES269102U (en) | 1983-06-16 |
IT1192545B (en) | 1988-04-20 |
AU9133982A (en) | 1983-06-16 |
ZA829143B (en) | 1984-07-25 |
LU84528A1 (en) | 1984-10-22 |
JPS58105781A (en) | 1983-06-23 |
DK550982A (en) | 1983-06-13 |
IT8209568A0 (en) | 1982-12-09 |
DE3244550A1 (en) | 1983-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |