US1543880A - Method of making knife blades, etc. - Google Patents

Method of making knife blades, etc. Download PDF

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Publication number
US1543880A
US1543880A US717792A US71779224A US1543880A US 1543880 A US1543880 A US 1543880A US 717792 A US717792 A US 717792A US 71779224 A US71779224 A US 71779224A US 1543880 A US1543880 A US 1543880A
Authority
US
United States
Prior art keywords
slug
thick
thin edges
rolling
edge
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
Application number
US717792A
Other languages
English (en)
Inventor
Thomas C Sheehan
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.)
Wade & Butcher Corp
Original Assignee
Wade & Butcher Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL15458D priority Critical patent/NL15458C/xx
Priority claimed from DEW66828D external-priority patent/DE441524C/de
Application filed by Wade & Butcher Corp filed Critical Wade & Butcher Corp
Priority to US717792A priority patent/US1543880A/en
Priority claimed from GB18172/24A external-priority patent/GB231378A/en
Priority to CH112836D priority patent/CH112836A/de
Application granted granted Critical
Publication of US1543880A publication Critical patent/US1543880A/en
Anticipated expiration legal-status Critical
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
    • 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

  • This invention relatesto a method of mak ing elongated articles having relatively thick and thin edges, such for example as the blades of table knives.
  • the thin edge oii'ers less resistance to elongation than the thickedge
  • the main object of the present invention is the production of a method of making table knife blades or other elongated articles having relatively thick and thin edges, in which method one or both of these discoveries are utilized in the interest of greater economy in production and improved uality of product.
  • the invention consists in certain acts or steps which will be hereinafter any described and then specifically set forth in the claims hereunto appended.
  • FIG. 1 is a perspective view of a blank of steel from whicha table knife blade is to be made
  • Fig. 2 isaperspective view of a slug forged from the blank shown in Fig. 1 in one operation
  • FIG. 3 is a cross-sectional view taken on the line 33 in Fig. 2' Fi 4 is a perspective View of a knife bla e ro led from the slug shown in Fig. 2;
  • Fig. 5 is a cross-sectional view taken on the line 5-5 in Fig. 4;
  • Fig. 6 is a perspective view diagrammatically showing the rolls of a rolling mill with segmental.
  • Fig. 7 is a perspective view, on an enlarged scale, of one of a pair of segmental rolling dies adapted to produce the slug shown in Fig.
  • Fig. '8 is a perspective view, on an enlarged scale, of one of a pair of rolling "dies for converting the slug of Fig. 2 into the knife blade of Fig. 4.
  • the slug 10 is to be rolled from the blank 9, the latter is passed between two segmental rolling dies 1 1 -r11 secured, in a well known manner not shown, to the rolls 12-12 of a rollin and operation of w ich is well known and needs no description herein.
  • Each die 11 is provided with an elongated depression 13, the purpose of which is to provide an excess of metal at 14 on either side of the slug 10 adjacent its thick edge, the'excess metal extending along said edge and varying in quantity at different points in accordance with the double taper of the blade to be produced and the consequent mill, the constructionprogressive change in the differential elongation of the blade as it is rolled from the slug.
  • Each die 11 is further provided with a series-of transverse depressions 15. These depressions serve to form transverse ridges 16 on the slugas it is being rolled in the mill.
  • the slug After the slug has been made, it is passed between a pair of segmental rolling dies 17 mounted on mill rolls like those carrying the dies 1111. During the second pass; that is, between the dies 17-17, the slug is but slightly increased in width but greatly increased in length, and of course reduced in thickness to the desired degree. If there were no excess metal at 14 on the slug passed between the dies 17-17, the difl'erential elongation of the thick and thin edges of the slug rolled thinner by the dies l717 would result in a product which is laterally curved, the thick edge being of the shorter radius. When, however, there is excess metal adjacent or along thethick edge of the slug, this excess metal is. crowded along with the thickedge of the slug and builds onto or lengthens the thick edge in compensation for the natural differential, elongation of the thick and thin edges.

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Forging (AREA)
US717792A 1924-06-04 1924-06-04 Method of making knife blades, etc. Expired - Lifetime US1543880A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL15458D NL15458C (xx) 1924-06-04
US717792A US1543880A (en) 1924-06-04 1924-06-04 Method of making knife blades, etc.
CH112836D CH112836A (de) 1924-06-04 1924-08-08 Verfahren zur Herstellung eines gestreckten Gegenstandes, dessen eine Längskante verhältnismässig dick und die andere verhältnismaässig dünn ist.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEW66828D DE441524C (de) Verfahren zur Herstellung eines gestreckten Gegenstandes mit verhaeltnismaessig dicken und duennen Kanten, z. B. Messerklingen
US717792A US1543880A (en) 1924-06-04 1924-06-04 Method of making knife blades, etc.
GB18172/24A GB231378A (en) 1924-07-30 1924-07-30 Method of making knife blades and the like

Publications (1)

Publication Number Publication Date
US1543880A true US1543880A (en) 1925-06-30

Family

ID=27213477

Family Applications (1)

Application Number Title Priority Date Filing Date
US717792A Expired - Lifetime US1543880A (en) 1924-06-04 1924-06-04 Method of making knife blades, etc.

Country Status (3)

Country Link
US (1) US1543880A (xx)
CH (1) CH112836A (xx)
NL (1) NL15458C (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505872A (en) * 1946-10-19 1950-05-02 Deere & Co Method of making planter runners
US2766645A (en) * 1952-08-20 1956-10-16 Gen Motors Corp Gap rolling method
US2925649A (en) * 1952-08-28 1960-02-23 Rolls Royce Method of forming a blade
US3218892A (en) * 1962-04-30 1965-11-23 Columbus Milpar And Mfg Compan Metal working process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505872A (en) * 1946-10-19 1950-05-02 Deere & Co Method of making planter runners
US2766645A (en) * 1952-08-20 1956-10-16 Gen Motors Corp Gap rolling method
US2925649A (en) * 1952-08-28 1960-02-23 Rolls Royce Method of forming a blade
US3218892A (en) * 1962-04-30 1965-11-23 Columbus Milpar And Mfg Compan Metal working process

Also Published As

Publication number Publication date
CH112836A (de) 1925-12-01
NL15458C (xx)

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