US3714850A - Method of manufacturing of knives - Google Patents

Method of manufacturing of knives Download PDF

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Publication number
US3714850A
US3714850A US00153206A US3714850DA US3714850A US 3714850 A US3714850 A US 3714850A US 00153206 A US00153206 A US 00153206A US 3714850D A US3714850D A US 3714850DA US 3714850 A US3714850 A US 3714850A
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US
United States
Prior art keywords
blade
knives
cold
compacted
haft
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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US00153206A
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English (en)
Inventor
H Peters
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.)
HENCKELS J ZWILLANGSWERK
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HENCKELS J ZWILLANGSWERK
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Publication date
Application filed by HENCKELS J ZWILLANGSWERK filed Critical HENCKELS J ZWILLANGSWERK
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K11/00—Making cutlery wares; Making garden tools or the like
    • B21K11/02—Making cutlery wares; Making garden tools or the like knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/10—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons knives; sickles; scythes

Definitions

  • the present invention relates to a method of production of knives, in general and to such method with a blade compacted by cold working, in particular.
  • the conventional knives blades of non-rusting steel are produced of such steel with relatively high carbon content and are hardened by chilling.
  • Corresponding knives have been found with disadvantage, in particular so far as an appreciable corrosion danger exists, in particular, if the knife is subjected to a certain food and certain cleaning means.
  • the surface of the blade is attacked after a short time. It loses in particular its smooth blank appearance.
  • knives In order to be able to use steel with relatively low carbon content, about in the range of 0.05 to 0.1, knives have also been known the blades of which are compacted by cold working. The cold working is performed thereby by means of cold forging into its final form. Numerous experiments have shown, that in this manner no sufficient hardening degree can be obtained. Substantially only a surface hardening takes place.
  • FIG. 1 is a front elevation of a knife
  • FIG. 2 is a side elevation thereof
  • FIG. 3 is a diagrammatic section, showing a cold rolling process in the formation of the blade.
  • the mono-block knife 1 has a blade 1. Following the blade is provided a sling 2 which forms the connection towards the haft 3. If one does not deal with a mono-block knife, the sling 2 leads into the connecting member, which is secured to the haft afterwards.
  • the production of the knife takes place substantially as follows:
  • An intermediate work piece member is first produced from a corresponding work piece, which comprises preferably chromium-nickel-steel or chromium-manganese-steel, preferably with a carbon content of 0.05 to 0.1 and in particular by form-forging of the sling and of the connecting member and the haft, respectively.
  • a corresponding work piece which comprises preferably chromium-nickel-steel or chromium-manganese-steel, preferably with a carbon content of 0.05 to 0.1 and in particular by form-forging of the sling and of the connecting member and the haft, respectively.
  • the preforming of the blade sheet thereafter takes place the cold-compacting of the blade 1. This is made by cold rolling cross-wise to the longitudinal axis x-x of the blade and in particular between rollers 4 and 5 the jacket face of whichis formed corresponding with the longitudinal profile of the blade 1, thus, for rolling of the blade in accordance with FIG. 1, and particularly the diverging zones 4'
  • the blade 1 is fed preferably twice through the rollers 4 and 5 and in particular in a position oppositely relative to each other, so that thus once a feeding from the cutting edge 6 takes place and the second time a feeding from the back 7 of the blade.
  • a method of production of knives with a blade compacted by cold working comprising the steps of 2.
  • the method, as set forth in claim 1 which includes the step of feeding twice said blade through rolls in positions turned over relative to each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Forging (AREA)
  • Knives (AREA)
US00153206A 1970-06-16 1971-06-15 Method of manufacturing of knives Expired - Lifetime US3714850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702029621 DE2029621A1 (de) 1970-06-16 1970-06-16 Verfahren zur Herstellung von Messern

Publications (1)

Publication Number Publication Date
US3714850A true US3714850A (en) 1973-02-06

Family

ID=5774091

Family Applications (1)

Application Number Title Priority Date Filing Date
US00153206A Expired - Lifetime US3714850A (en) 1970-06-16 1971-06-15 Method of manufacturing of knives

Country Status (4)

Country Link
US (1) US3714850A (cg-RX-API-DMAC10.html)
DE (1) DE2029621A1 (cg-RX-API-DMAC10.html)
FR (1) FR2095294B1 (cg-RX-API-DMAC10.html)
GB (1) GB1315101A (cg-RX-API-DMAC10.html)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5992204A (en) * 1995-03-15 1999-11-30 Sunds Defibrator Woodhandling Oy Method of increasing the strength of a blade, and a blade
CN102284491A (zh) * 2011-07-06 2011-12-21 徐紫宸 一种厨具用刀的成型轧辊及使用方法
US9975260B2 (en) 2015-04-14 2018-05-22 Darex, Llc Cutting edge with microscopically sized channels to enhance cutting performance
US10071448B1 (en) * 2010-10-11 2018-09-11 Blendtec, Inc. Method for making a mixing blade for blending apparatus
WO2025015140A1 (en) * 2023-07-12 2025-01-16 Andritz Inc. Fatigue resistance for shear knives

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2195382C2 (ru) * 2000-02-15 2002-12-27 БОГУСЛАВСКИЙ Борис Зельманович Способ изготовления изделия и устройство для его осуществления

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US361620A (en) * 1887-04-19 Manufacture of table cutleey
US3616712A (en) * 1969-05-21 1971-11-02 Rolf Jurgen Eickhorn Stainless steel knife blade and process for the manufacture thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US361620A (en) * 1887-04-19 Manufacture of table cutleey
US3616712A (en) * 1969-05-21 1971-11-02 Rolf Jurgen Eickhorn Stainless steel knife blade and process for the manufacture thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5992204A (en) * 1995-03-15 1999-11-30 Sunds Defibrator Woodhandling Oy Method of increasing the strength of a blade, and a blade
US10071448B1 (en) * 2010-10-11 2018-09-11 Blendtec, Inc. Method for making a mixing blade for blending apparatus
US10537968B1 (en) 2010-10-11 2020-01-21 Blendtec, Inc. Method for making a mixing blade for blending apparatus
CN102284491A (zh) * 2011-07-06 2011-12-21 徐紫宸 一种厨具用刀的成型轧辊及使用方法
US9975260B2 (en) 2015-04-14 2018-05-22 Darex, Llc Cutting edge with microscopically sized channels to enhance cutting performance
WO2025015140A1 (en) * 2023-07-12 2025-01-16 Andritz Inc. Fatigue resistance for shear knives

Also Published As

Publication number Publication date
GB1315101A (en) 1973-04-26
FR2095294A1 (cg-RX-API-DMAC10.html) 1972-02-11
DE2029621A1 (de) 1971-12-30
DE2029621B2 (cg-RX-API-DMAC10.html) 1974-04-11
FR2095294B1 (cg-RX-API-DMAC10.html) 1974-05-31

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