US2315898A - Knife - Google Patents

Knife Download PDF

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Publication number
US2315898A
US2315898A US386594A US38659441A US2315898A US 2315898 A US2315898 A US 2315898A US 386594 A US386594 A US 386594A US 38659441 A US38659441 A US 38659441A US 2315898 A US2315898 A US 2315898A
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United States
Prior art keywords
blade
recesses
knife
cake
cutting
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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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US386594A
Inventor
James E Krilow
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Individual
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Individual
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Priority to US386594A priority Critical patent/US2315898A/en
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Publication of US2315898A publication Critical patent/US2315898A/en
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Expired - Lifetime legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B9/00Blades for hand knives
    • B26B9/02Blades for hand knives characterised by the shape of the cutting edge, e.g. wavy

Definitions

  • the present invention relates to knives and more particularly to a knife for cutting slice of cake, fruit and other edibles.
  • Some of the objects of the present invention are to provide an improved cutting knife; to provide a knife blade by means of which smooth uniform slices of cake or other edible can be cut from the cake body; to provide a knife blade which is self restoring for material displaced during a cutting operation; to provide a knife blade wherein provision is made for the expansion of material compressed during a cutting stroke, and the restoring of such material into a slice or body to present an unruptured surface; to provide a combined knife and handle so associated and constructed as to resist tendency to twist or turn while cutting; and to provide other improvements as will hereinafter appear.
  • FIG. 1 represents a side elevation of a knife embodying one form of the present invention
  • Fig. 2 represents a section on line 22 of Fig. 1
  • Fig. 3 represents a section on line 3-3 of Fig. 1
  • Fig. 4 represents a section on line 44 of Fig. 1
  • Fig. 5 represents a side elevation of a knife showing a modification
  • Fig. 6 represents a top plan of the knife of Fig. 5.
  • one form of the present invention consists of a knife blade H) and handle H, the two parts being here shown as integral and molded from a suitable plastic material.
  • the blade I taper from the back l2 to a sharp cutting edge l3, which is preferably of toothed construction throughout its length, while the handle H is substantially uniform in thickness to provide good grasping qualities.
  • the sides of the handle H are formed respectively with longitudinally disposed grooves 14 and I so located with respect to each other that the thumb of the user can conveniently seat in one groove while the fingers enter the other groove. In this way a safe grasp of the handle can be maintained when cutting and slipping or turning cannot take place.
  • the present invention contemplates means in the form of a plurality of recesses l6 extending longitudinally of the blade H] on each side and opening into the back 12.
  • the recesses l6 are spaced apart so that each pair is separated by the normal thickness of the blade [0, or in other words the blade thickness alternates with the recesses along an area parallel to the back [2.
  • Each recess is deepest where it meets the back and emerges near the longitudinal axis of the blade by an outwardly disposed taper H.
  • the sides of each of the recesses l 6 converge inwardly to meet in a smooth arc l8 and may be slightly beveled to facilitate knife stroke reciprocation.
  • the function of these recesses is to provide clearances along both sides of the blade into which the cake or other material can expand after being compressed by the blade during a cutting stroke.
  • the blade I0 is provided with two rows or recesses 23 and 24 in opposite sides respectively of the blade, and in form and shape like those shown and described in Fig. 1.
  • the row of recesses 23 is staggered with respect to the row 24 so that each recess on one side is opposite to an unrecessed area on the other side.
  • the front and rear walls of the recesses serve to push any particles out of the recesses, there is also an added function created by the recesses since these cutting edge, said blade having a plurality of substantially semi-circular recesses therein to receive material pressed out of the product bein cut, said recesses opening through said back and longitudinally spaced to form a plurality of plane surfaces respectively between pairs of said recesses, said surfaces increasing in width from said back whereby material leaving said recesses is smoothed into the face of said product.
  • a knife consisting of a blade formed by a relatively wide back and sides tapering to a sharp cutting edge, said blade having two rows of recesses, one row extending lengthwise on one side of said blade and the other row extending lengthwise on the other side of said blade and being staggered with respect to the first row, each recess having sides diverging towards and intercepting said back to form plane surfaces respectively between pairs of said recesses for smoothing displaced crumbs of material back into the face of the product while being cut.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food-Manufacturing Devices (AREA)

Description

J. E. KRILOW KNIFE Filed April 3, 1941 Patented Apr. 6, 1943 UNITED STATES ATENT OFFICE 2 Claims.
The present invention relates to knives and more particularly to a knife for cutting slice of cake, fruit and other edibles.
In knives as heretofore constructed, and especially those knives having a wedge-shaped transverse section, it has been found that the cutting stroke in passing downward through an edible product, such as cake, causes the surface particles to be momentarily compressed and then as the blade passes onward these particles expand outwardly and leave a ruptured surface. In many instances the separated slice i perforated due to particles forced out by the successive compression and expansion.
Some of the objects of the present invention are to provide an improved cutting knife; to provide a knife blade by means of which smooth uniform slices of cake or other edible can be cut from the cake body; to provide a knife blade which is self restoring for material displaced during a cutting operation; to provide a knife blade wherein provision is made for the expansion of material compressed during a cutting stroke, and the restoring of such material into a slice or body to present an unruptured surface; to provide a combined knife and handle so associated and constructed as to resist tendency to twist or turn while cutting; and to provide other improvements as will hereinafter appear.
In the accompanying drawing Fig. 1 represents a side elevation of a knife embodying one form of the present invention; Fig. 2 represents a section on line 22 of Fig. 1; Fig. 3 represents a section on line 3-3 of Fig. 1; Fig. 4 represents a section on line 44 of Fig. 1, Fig. 5 represents a side elevation of a knife showing a modification; and Fig. 6 represents a top plan of the knife of Fig. 5.
Referring to the drawing one form of the present invention consists of a knife blade H) and handle H, the two parts being here shown as integral and molded from a suitable plastic material. The blade I taper from the back l2 to a sharp cutting edge l3, which is preferably of toothed construction throughout its length, while the handle H is substantially uniform in thickness to provide good grasping qualities. Preferably the sides of the handle H are formed respectively with longitudinally disposed grooves 14 and I so located with respect to each other that the thumb of the user can conveniently seat in one groove while the fingers enter the other groove. In this way a safe grasp of the handle can be maintained when cutting and slipping or turning cannot take place.
In using any knife of wedge shaped section it has been found, as the blade makes a cut in an edible, such as cake, that the back portion or thick part of the wedge compacts or compresses the severed faces. Then as the blade continues the out, these compacted areas are relieved of the blade pressure and consequently expand outwardly so that the surface of the cake slice or the cake body has a ruptured and uneven appearance. For overcoming this disadvantage the present invention contemplates means in the form of a plurality of recesses l6 extending longitudinally of the blade H] on each side and opening into the back 12. The recesses l6 are spaced apart so that each pair is separated by the normal thickness of the blade [0, or in other words the blade thickness alternates with the recesses along an area parallel to the back [2. Each recess is deepest where it meets the back and emerges near the longitudinal axis of the blade by an outwardly disposed taper H. The sides of each of the recesses l 6 converge inwardly to meet in a smooth arc l8 and may be slightly beveled to facilitate knife stroke reciprocation. The function of these recesses is to provide clearances along both sides of the blade into which the cake or other material can expand after being compressed by the blade during a cutting stroke. The material which thus expands into these recesses can now be pressed back into the slice or cake body by the recess side 20 on the forward stroke and the recess side 2| on the rearward stroke. Following this restoring of displaced material or particles, the smooth intermediate blade areas 22 iron off the surface and the severed face appears smooth and of uniform texture in marked contrast to the ordinary rough ruptured face.
In the form of the invention shown in Fig. 4, the blade I0 is provided with two rows or recesses 23 and 24 in opposite sides respectively of the blade, and in form and shape like those shown and described in Fig. 1. In this form the row of recesses 23 is staggered with respect to the row 24 so that each recess on one side is opposite to an unrecessed area on the other side. Thus while the restoring and smoothing action of the recesses 23 and 24 is retained with full efficiency, the thickness of the blade at each recess is greater and hence more resistant to improper flexing.
While in both forms of the invention the front and rear walls of the recesses serve to push any particles out of the recesses, there is also an added function created by the recesses since these cutting edge, said blade having a plurality of substantially semi-circular recesses therein to receive material pressed out of the product bein cut, said recesses opening through said back and longitudinally spaced to form a plurality of plane surfaces respectively between pairs of said recesses, said surfaces increasing in width from said back whereby material leaving said recesses is smoothed into the face of said product.
2. A knife consisting of a blade formed by a relatively wide back and sides tapering to a sharp cutting edge, said blade having two rows of recesses, one row extending lengthwise on one side of said blade and the other row extending lengthwise on the other side of said blade and being staggered with respect to the first row, each recess having sides diverging towards and intercepting said back to form plane surfaces respectively between pairs of said recesses for smoothing displaced crumbs of material back into the face of the product while being cut.
JAMES E. KRILOW.
US386594A 1941-04-03 1941-04-03 Knife Expired - Lifetime US2315898A (en)

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US386594A US2315898A (en) 1941-04-03 1941-04-03 Knife

Applications Claiming Priority (1)

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US386594A US2315898A (en) 1941-04-03 1941-04-03 Knife

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Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990615A (en) * 1959-05-08 1961-07-04 Walter J Ohler Fruit and vegetable coring tool
US5572794A (en) * 1995-09-20 1996-11-12 Kalbern; Cindy Double-edged knife
US20050150340A1 (en) * 2004-01-08 2005-07-14 Graham Packaging Company, L.P. Blade having a depression for trimming/cutting articles
US20080276467A1 (en) * 2007-05-10 2008-11-13 Jordan Schmidt Cutting apparatus
US20090193983A1 (en) * 2008-02-06 2009-08-06 Kwok Kuen So Food cutting device
US20100125289A1 (en) * 2008-11-18 2010-05-20 Aditya Dispomed Products Private Ltd. Scalpel blade having dual indentations on back edge
US20100212166A1 (en) * 2009-02-23 2010-08-26 Visnack David A Hydro-tension releasing knife blade
US20120079723A1 (en) * 2010-10-01 2012-04-05 Owens Dwaine E Scraper chef knife
US8695138B2 (en) 2011-12-06 2014-04-15 DPX Ventures Limited Folding survival knife with integrated tools
US8707490B1 (en) 2011-12-06 2014-04-29 DPX Ventures Limited Survival knife with integrated tools
US8713735B1 (en) 2011-12-06 2014-05-06 DPX Ventures Limited Compact survival tool
US9003665B2 (en) 2011-06-14 2015-04-14 DPX Ventures Limited Identification tag with breakaway tool
WO2015109366A1 (en) * 2014-01-22 2015-07-30 Mcpherson's Housewares Ip Pty Ltd Cutting blade
USD750948S1 (en) 2011-12-06 2016-03-08 DPX Ventures Limited Knife
USD766673S1 (en) * 2015-11-25 2016-09-20 E. Mishan & Sons, Inc. Long narrow knife
USD766672S1 (en) * 2015-11-25 2016-09-20 E. Mishan & Sons, Inc. Large knife
USD770216S1 (en) * 2015-05-22 2016-11-01 Telebrands Corp. Knife
USD770217S1 (en) * 2015-05-22 2016-11-01 Telebrands Corp. Knife
USD770219S1 (en) * 2015-05-22 2016-11-01 Telebrands Corp. Knife
USD770218S1 (en) * 2015-05-22 2016-11-01 Telebrands Corp. Knife
USD770835S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770836S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770838S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770837S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770834S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD781666S1 (en) * 2015-11-25 2017-03-21 E. Mishan & Sons, Inc. Small knife
USD790288S1 (en) * 2015-12-16 2017-06-27 Norman Singer Knife
USD790289S1 (en) * 2015-12-16 2017-06-27 Norman Singer Knife
USD790290S1 (en) * 2016-01-04 2017-06-27 Norman Singer Knife
USD790287S1 (en) * 2015-12-16 2017-06-27 Norman Singer Knife
USD793174S1 (en) * 2016-01-08 2017-08-01 Dkb Household Uk Limited Knife blade and/or replica thereof
USD795639S1 (en) * 2015-12-16 2017-08-29 Norman Singer Knife
USD803012S1 (en) 2015-12-16 2017-11-21 Norman Singer Knife
US9889573B2 (en) 2015-06-26 2018-02-13 Norman Singer Knife with grip
US9894906B2 (en) * 2015-03-12 2018-02-20 Danny Kennedy Tenderizing knife
USD812435S1 (en) 2015-12-16 2018-03-13 Norman Singer Knife finger platform
US20190160697A1 (en) * 2017-11-27 2019-05-30 Henry Johnson Pty Ltd As Trustee For The Henry Johnson Family Trust Low Sticking Friction Knife Blade and Methods of Manufacturing Same
US10442094B1 (en) * 2014-03-21 2019-10-15 Robert F. Weir Multipurpose machete with spur knife and removable storage handle assembly
US20200009755A1 (en) * 2018-07-03 2020-01-09 Norman Singer Knife with extended handle grip portion
US10576563B2 (en) 2018-02-03 2020-03-03 Innovations 4 Surgery, LLC Load-sharing insert for cutting blade
USD904833S1 (en) 2018-07-03 2020-12-15 Norman Singer Knife finger platform
US12049018B2 (en) * 2021-03-11 2024-07-30 World Centric Molded fiber cutlery

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990615A (en) * 1959-05-08 1961-07-04 Walter J Ohler Fruit and vegetable coring tool
US5572794A (en) * 1995-09-20 1996-11-12 Kalbern; Cindy Double-edged knife
US20050150340A1 (en) * 2004-01-08 2005-07-14 Graham Packaging Company, L.P. Blade having a depression for trimming/cutting articles
US20080276467A1 (en) * 2007-05-10 2008-11-13 Jordan Schmidt Cutting apparatus
US20090193983A1 (en) * 2008-02-06 2009-08-06 Kwok Kuen So Food cutting device
CN101502968B (en) * 2008-02-06 2013-07-17 苏国权 Food cutting device
US20100125289A1 (en) * 2008-11-18 2010-05-20 Aditya Dispomed Products Private Ltd. Scalpel blade having dual indentations on back edge
US20100212166A1 (en) * 2009-02-23 2010-08-26 Visnack David A Hydro-tension releasing knife blade
US8839524B2 (en) * 2010-10-01 2014-09-23 Dwaine Owens Scraper chef knife
US20120079723A1 (en) * 2010-10-01 2012-04-05 Owens Dwaine E Scraper chef knife
US9003665B2 (en) 2011-06-14 2015-04-14 DPX Ventures Limited Identification tag with breakaway tool
US8707490B1 (en) 2011-12-06 2014-04-29 DPX Ventures Limited Survival knife with integrated tools
US8713735B1 (en) 2011-12-06 2014-05-06 DPX Ventures Limited Compact survival tool
US8695138B2 (en) 2011-12-06 2014-04-15 DPX Ventures Limited Folding survival knife with integrated tools
USD740641S1 (en) 2011-12-06 2015-10-13 DPX Ventures Limited Knife body
USD750948S1 (en) 2011-12-06 2016-03-08 DPX Ventures Limited Knife
WO2015109366A1 (en) * 2014-01-22 2015-07-30 Mcpherson's Housewares Ip Pty Ltd Cutting blade
CN106103017A (en) * 2014-01-22 2016-11-09 麦克芬森家用物品Ip股份有限公司 Cutting blade
US10442094B1 (en) * 2014-03-21 2019-10-15 Robert F. Weir Multipurpose machete with spur knife and removable storage handle assembly
US9894906B2 (en) * 2015-03-12 2018-02-20 Danny Kennedy Tenderizing knife
USD770836S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770218S1 (en) * 2015-05-22 2016-11-01 Telebrands Corp. Knife
USD770835S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770217S1 (en) * 2015-05-22 2016-11-01 Telebrands Corp. Knife
USD770838S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770837S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770834S1 (en) * 2015-05-22 2016-11-08 Telebrands Corp. Knife
USD770216S1 (en) * 2015-05-22 2016-11-01 Telebrands Corp. Knife
USD770219S1 (en) * 2015-05-22 2016-11-01 Telebrands Corp. Knife
US9889573B2 (en) 2015-06-26 2018-02-13 Norman Singer Knife with grip
USD766672S1 (en) * 2015-11-25 2016-09-20 E. Mishan & Sons, Inc. Large knife
USD781666S1 (en) * 2015-11-25 2017-03-21 E. Mishan & Sons, Inc. Small knife
USD766673S1 (en) * 2015-11-25 2016-09-20 E. Mishan & Sons, Inc. Long narrow knife
USD795639S1 (en) * 2015-12-16 2017-08-29 Norman Singer Knife
USD812435S1 (en) 2015-12-16 2018-03-13 Norman Singer Knife finger platform
USD790289S1 (en) * 2015-12-16 2017-06-27 Norman Singer Knife
USD803012S1 (en) 2015-12-16 2017-11-21 Norman Singer Knife
USD790288S1 (en) * 2015-12-16 2017-06-27 Norman Singer Knife
USD810517S1 (en) 2015-12-16 2018-02-20 Norman Singer Knife
USD790287S1 (en) * 2015-12-16 2017-06-27 Norman Singer Knife
USD790290S1 (en) * 2016-01-04 2017-06-27 Norman Singer Knife
USD793174S1 (en) * 2016-01-08 2017-08-01 Dkb Household Uk Limited Knife blade and/or replica thereof
US20190160697A1 (en) * 2017-11-27 2019-05-30 Henry Johnson Pty Ltd As Trustee For The Henry Johnson Family Trust Low Sticking Friction Knife Blade and Methods of Manufacturing Same
US10576563B2 (en) 2018-02-03 2020-03-03 Innovations 4 Surgery, LLC Load-sharing insert for cutting blade
US20200009755A1 (en) * 2018-07-03 2020-01-09 Norman Singer Knife with extended handle grip portion
USD904833S1 (en) 2018-07-03 2020-12-15 Norman Singer Knife finger platform
US11040459B2 (en) 2018-07-03 2021-06-22 Norman Singer Knife with extended handle grip portion
US12049018B2 (en) * 2021-03-11 2024-07-30 World Centric Molded fiber cutlery

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