US2497482A - Edge tool - Google Patents

Edge tool Download PDF

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Publication number
US2497482A
US2497482A US639958A US63995846A US2497482A US 2497482 A US2497482 A US 2497482A US 639958 A US639958 A US 639958A US 63995846 A US63995846 A US 63995846A US 2497482 A US2497482 A US 2497482A
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Prior art keywords
member
blade
cutting edge
sides
recess
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Expired - Lifetime
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US639958A
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Johnson Margaret Wilson
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Johnson Margaret Wilson
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Priority to US639958A priority Critical patent/US2497482A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38Cutting-out; Stamping-out
    • B26F1/44Cutters therefor; Dies therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38Cutting-out; Stamping-out
    • B26F1/44Cutters therefor; Dies therefor
    • B26F2001/4463Methods and devices for rule setting, fixation, preparing cutting dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38Cutting-out; Stamping-out
    • B26F1/44Cutters therefor; Dies therefor
    • B26F2001/4472Cutting edge section features

Description

F 1950 R. A. J. WILSON 2,497,482

EDGE TOOL Filed Jan. 9, 1946 23 4 0 v rlvelltor Rubye Anne Jaryeaux Wilson Patented Feb. 14, 1950 urns-o v so 2,497,482

Bubye AnnqJgrveaux Wilson, New Qfleans; La. 'Margaret -Wilson J olgnson fladministrat'rix -of said ltubye Anne J arveaux ..Wilson,deceased .A1m ati9 .-Ianear 46 ,;..S.r1a .Nwfiiifid My invention relates to improvements inedge tools. esp cially knives and thelike.

,Thepri rrary object of the invention i toinexpensively equip a cutting blade with a removable and replaceable, rigid, bevel-edge cutting member interlocking with the blade to provide rigidity, and which may be formed of a different material than the blade better adapted to retain its edge, and is adapted for resharpening so as to constitute a replacement part.

Other and subordinate objects also comprehended by my invention, together with the precise nature of my improvements, and the manifold advantages thereof, will be readily understood when the succeeding description and claims are read with reference to the drawing accompanying and forming part of this specification.

In said drawing Figure l is a view in perspective illustrating my invention in a preferred embodiment thereof,

Figure 2 is a view in end elevation drawn to an enlarged scale,

Figure 3 is a fragmentary view in perspective of a modified embodiment of the cutting member,

Figure 4 is a view in end elevation of another modified embodiment of the cutting member, and

Figure 5 is a view in side elevation of still another modified embodiment of the invention.

Referring to the drawing by numerals, and first to Figures 1 and 2, my invention has been shown therein by way of exemplification, as comprising a knife, or other tool, blade I forming a holder for a bevel cutting edge member '2. The knife blade I is of bevel form with sides 3 converging to a blunt leading edge 4.

The cutting edge member 2 is likewise of bevel form, coextensive in length, substantially, with said blade I and narrower than said blade, and is provided with an outer cutting edge portion 5 bevelled in conformity with the angle of con- 'vergence of the sides 3 of said blade I and which has a root thickness corresponding to the thickness of said blunt edge 4 for a purpose presently seen. At its opposite edge 6 the cutting edge member 2 is fiat, and between said edges 5, 6 is provided with'sides l which converge to the root of the cutting edge portion 5 at a lesser angle than the sides 3 of said blade I. The sides 1 are provided with longitudinally extending fiutes, or ribs, 8, preferably of square form in cross-section.

A longitudinal recess 9 is provided in the knife blade I in the median plane thereof and extending from end to end of the blade, said recess extending into said blade from the leading edge 4 Claims. (01.: 30- 349 a dep h sq e penclina the width. 9 the side of said. membe betweent e vrcz tp cuttin ed er tio 5 en i fi e ed 1 19 ai memb r The sides'of, the recess}; are provided,-With,longi tudinal flutes, or ribs, I ll adapted to interfit, with the flutes, or ribs, 8 of said member 2, and the member 2 is slidably fitted in said recess 9 for removal endwise but is interlocked therein against removal laterally by the interfitting flutes, or ribs, 8, l0.

Fasteners may be provided at each end of the cutting blade I for preventing endwise creeping of the cutting edge member 2 in the recess 9. As shown in Figure 2, said fasteners may take the form of fiat, metal fingers, as at H, countersunk in the end of the blade I and secured to said end by screws [2 with one end portion overlapping the corresponding end of said member 2 and provided with a nub I-3 bearing against said end of said member.

As shown in Figure 3, the cutting edge portion l4 of the cutting edge member [5 may be sawtoothed. Otherwise, said member I5 is identical with the described member 2.

As will now be seen, my invention provides a cutting edge member in a bevel-sided holder, which may be a knife or other tool blade, said member having a cutting edge portion the sides of which are coplanar with the bevel sides of the holder, and which portion extends out of the holder. The cutting edge member is removable easily for replacement, when dull, by a new one, or for sharpening and subsequent replacement, and may be formed of a harder material than that of the holder adapting the same to hold a cutting edge.

In the modified embodiment of my invention shown in Figure 4, the cutting edge member l6 has the form of a half section of the member 2 longitudinally split therefrom so that the member I6 is formed with a cutting edge portion bevelled on one side only and designated l1, and with flutes, or ribs, It! on the corresponding side of the member only. As will be understood, this modified cutting edge member is designed to be fitted in a blade, not shown, having a correspondingly shaped and constructed recess therein.

In the modified embodiment of the invention shown in Figure 5, a cutting edge member l9, similar to the member 2, is provided in one blade 20 of a pair of shears 2|, in the same manner as in the first described embodiment of the invention, with the following exceptions. A side fastener lug 22 on the member I9 is secured by a screw 23 to said member to fit in an aperture 24 3 in the blade '20 for preventing endwise creeping of said member IS.

The foregoing will, it is believed, suffice to impart a clear understanding of my invention without further explanation.

Manifestly, the invention, as described, is susceptible of modification without departing from the inventive concept, and right is herein reserved to such modifications as fall within the scope of the appended claims. What I claim is:

1. A blade-like holder of elongated form and triangular shape in cross-section with sides converging to a blunt edge and having a longitudinal recess extending therein from said blunt edge, and a cutting edge member set into said recess and having a bevelled cutting edge portion extending out of said recess provided with sides coplanar with the sides of said holder, said recess and said member having interfitting fluted sides for preventing the member from displacement out of said recess in the direction of said edge, said interfitting sides converging from the bottom of said recess to said blunt edge at a lesser angle than the sides of said holder and the sides of said bevelled cutting edge portion.

2. A blade-like holder of elongated form and triangular shape in cross-section with sides con verging to a blunt edge and having a longitudinal recess extending therein from said blunt edge, and a cutting edge member set into said recess and having a bevelled cutting edge portion ex tending out of said recess provided with sides coplanar with the sides of said holder, and means on the holder confining said member in said recess against movement along the same compris ing flat fingers countersunk in the ends of said holder and cutting edge member and detachably secured to said ends of said holder.

RUBYE ANNE JARV'EAUX WILSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 107,334 Carew Sept. 13, 1870 1,124,690 Barnett Jan. 12, 1915

US639958A 1946-01-09 1946-01-09 Edge tool Expired - Lifetime US2497482A (en)

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US639958A US2497482A (en) 1946-01-09 1946-01-09 Edge tool

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US639958A US2497482A (en) 1946-01-09 1946-01-09 Edge tool

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653382A (en) * 1950-08-26 1953-09-29 Donald T Twiss Combination knife
US4896424A (en) * 1989-01-13 1990-01-30 Walker Michael L Composite cutting blade and method of making the blade
US20130008035A1 (en) * 2011-07-05 2013-01-10 Hsiung Hsieh Wen Composite material knife tool
US20140096400A1 (en) * 2012-03-09 2014-04-10 Azer Babaev Composite smoothing tool and its manufacturing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US107334A (en) * 1870-09-13 Improved wire-cutter
US1124690A (en) * 1913-07-21 1915-01-12 Barnett S Inc Knife.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US107334A (en) * 1870-09-13 Improved wire-cutter
US1124690A (en) * 1913-07-21 1915-01-12 Barnett S Inc Knife.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653382A (en) * 1950-08-26 1953-09-29 Donald T Twiss Combination knife
US4896424A (en) * 1989-01-13 1990-01-30 Walker Michael L Composite cutting blade and method of making the blade
US20130008035A1 (en) * 2011-07-05 2013-01-10 Hsiung Hsieh Wen Composite material knife tool
US20140096400A1 (en) * 2012-03-09 2014-04-10 Azer Babaev Composite smoothing tool and its manufacturing
US9393708B2 (en) * 2012-03-09 2016-07-19 Azer Babaev Composite smoothing tool

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