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Publication numberUS3845578 A
Publication typeGrant
Publication dateNov 5, 1974
Filing dateJun 15, 1973
Priority dateJun 15, 1973
Also published asCA996978A1
Publication numberUS 3845578 A, US 3845578A, US-A-3845578, US3845578 A, US3845578A
InventorsW Holmstrom
Original AssigneeCaterpillar Tractor Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Replaceable cutting edge with plural tangs
US 3845578 A
Abstract
A replaceable cutting edge for a material handling implement including a floor forming a leading edge with a plurality of adjacent openings, the cutting edge having an elongated slot for receiving the leading edge of the floor and a plurality of downwardly and rearwardly extending tangs for penetrating the respective openings, a tapered element urged into engagement between the floor and cutting edge to urge the leading edge of the floor into the slot and to simultaneously urge the tangs rearwardly into locking engagement with the respective holes.
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Description  (OCR text may contain errors)

nited States Patent [191 olmstrom 1 1 Nov. 5, 1974 REPLACEABLE CUTTING EDGE WITH PLURAL TANGS [52] U.S. Cl. 37/141 R, 37/142 R, 83/831, 287/103 R [51] Int. Cl E021 9/28 [58] Field of Search 37/141 R, 141 T, 142 R, 37/142 A [56] References Cited UNITED STATES PATENTS 1,772,624 8/1930 Brendlin 37/141 R 1,963,847 6/1934 Jersey 4 37/141 R 2,846,791 8/1958 Hosmer et al 37/142 R 3,497,973 3/1970 Campbell .4 37/141 R 3,685,177 8/1972 Hahn 37/141 R Black et al 37/141 R Davidukc 37/142 R X Primary ExaminerRobert E. Pulfrey Assistant Examiner-E. H. Eickholt Attorney, Agent, or Firm-Phillips, Moore, Weissenberger, Lempio & Strabala [57] ABSTRACT A replaceable cutting edge for a material handling implement including a floor forming a leading edge with a plurality of adjacent openings, the cutting edge having an elongated slot for receiving the leading edge of the floor and a plurality of downwardly and rearwardly extending tangs for penetrating the respective openings, a tapered element urged into engagement between the floor and cutting edge to urge the leading edge of the floor into the slot and to simultaneously urge the tangs rearwardly into locking engagement with the respective holes.

4 Claims, 5 Drawing Figures REPLACEABLE CUTTING EDGE WITH PLURAL- TANGS A BACKGROUND OF THE INVENTION One typical solution to this problem has been to weld a cutting edge of hardened metal onto a leading edge of the implement. However, when it is necessary to replace the cutting edge, substantial equipment is necessary to make the replacement. For example, a cutting torch is required to remove the worn cutting edge while welding equipment must be provided. to secure a replacement cutting edge in place.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a replaceable cutting edge for material handling implements which may be firmly secured in place during use while also facilitating replacement.

It is a further object of the invention to provide such a replaceable cutting member which is secured to the leading edge of a material handling implement by means of a slot for receiving the leading edge and a plurality of downwardly and rearwardly tangs penetrating openings adjacent the leading edge, tapered means urging both the slot and tangs on the cutting element into engagement upon the leading edge of the implement.

Additional objects and advantages of the present invention are made apparent in the following description having reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS DESCRIPTION OF A PREFERRED EMBODIMENT A portion of a loader bucket is illustrated at 11in FIG. I as an exemplary implement with which the replaceable cutting edge of the present invention may be employed. The loader bucket includes a floor 12 formed from plate metal and having a leading edge 13. The loader bucket also has side walls as indicatedat l4 and 16.

I An elongated member 17 having a cutting edge 18 is constructed according to the present invention for replaceable mounting upon the leading edge 13 of the bucket floor 12.

In order to firmly secure the cutting member 17 in place upon the leading edge 13 of the bucket floor. the cutting member is formed with an elongated shoulder 19 providing a slot 21 facing rearwardly or away from the cutting edge 18 to receive the leading edge 13 of the floor 12. 1

The bucket floor 12 is also formed with a plurality of openings 22 adjacent and rearwardly of the leading edge 13. The cutting edge is formed with a like number of downwardly and rearwardly extending tangs 23 suitably spaced to be received by the respective openings 22. The tangs 23 and the slot 21 cooperate in a manner discussed immediately below to firmly secure the cutting member 17 in place upon the implement floor 12.

The cutting 'member 17 is urged into engagement with the bucket floor 12 by means of a plurality of tapered bolts 24. Referring particularly to FIG. 3, it may be seen that a forwardly facing portion of each tang 23 is tapered as indicated at 26. Similarly, an opposed surface 27 formed by each of the openings 22 has a similar taper. The bolts 24 penetrate the cutting member 17 for threaded engagement with nuts indicated at 28. Thus, as the bolts are drawn upwardly by tightening of the nuts 28, as viewed in FIG. 3, the cutting member 17 is urged rearwardly or in a leftward direction as viewed in FIG. 3. Accordingly, the slot 21 is urged into engagement with the leading edge 13 of the bucket floor 12. Simultaneously, the tangs 23 are locked within the openings 22 in a position which may be best seen in FIG. 3.

FIGS. 4 and 5 illustrate a variation of the replaceable cutting member construction of FIGS. 1 3. The cutting member 17' of FIGS. 4 and 5 is similarly mounted adjacent the leading edge 13' of a bucket floor 12' but is further. adapted for the mounting of spaced apart digging teeth 31. For the purpose of receiving the digging teeth 31, the cutting member 17 has a somewhat differently figured cutting edge as indicated at 18. A plurality of adapters 32 are secured to the cutting member 17, for example, by welding, in spaced apart relation to provide mountings adapted to receive the respective digging teeth 31. The digging teeth 31 are secured in place upon the respective adapters by means of retaining pins 33 arranged in vertical bores 34 passing through each tooth 31, the respective adapter 32 and the cutting member 17 adjacent its cutting edge 18.

What is claimed is:

l. A replaceable cutting member for a material handling implement including plate means forming a forwardly facing leading edge for the implement, a plurality of openings being formed in the plate means rearwardly of the leading edge, the cutting member forming an elongated cutting edge and a slot facing away from the cutting edge to receive the leading edge of the plate means, the cutting member having downwardly and rearwardlyextending tangs for penetrating the respective openings in the plates means, tapered means engaging the plate means and cutting member to urge the leading edge of the plate means into the slot and to simultaneously urge the tangs rearwardly into locking engagement with the holes of the plate means.

threadedly secured in place upon the cutting member.

4. The replaceable cutting member of claim 1 comprising a plurality of digging teeth arranged along the cutting edge thereof in spaced apart relation and secured to the cutting member by suitable adapter means and retaining means.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1772624 *Jun 5, 1928Aug 12, 1930Hayward CompanyBucket
US1963847 *Aug 28, 1931Jun 19, 1934W A Riddell CompanyCutting edge for implements
US2846791 *Aug 18, 1955Aug 12, 1958Tooth H & L CoMounting for digger tooth blade
US3497973 *May 1, 1967Mar 3, 1970Caterpillar Tractor CoCompact high strength replaceable cutting edge
US3685177 *Aug 13, 1970Aug 22, 1972Esco CorpTwo piece cutting edge
US3736664 *Oct 12, 1971Jun 5, 1973Caterpillar Tractor CoReplaceable pinned-on cutting edge
US3765109 *Mar 17, 1972Oct 16, 1973Myers Excavating LtdScraping blade for converting a cutting edge on a loading bucket
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4027408 *Jan 21, 1976Jun 7, 1977Ferdinando RamellaDigger teeth with interlocking tooth elements
US4077142 *Mar 23, 1977Mar 7, 1978Caterpillar Tractor Co.Adjustable cutting edge assembly for a power earth mover
US4120105 *Aug 15, 1977Oct 17, 1978Caterpillar Tractor Co.Bucket adapter with load absorbing means
US4269275 *Jul 24, 1979May 26, 1981Lucien CousinReplaceable edge bit assembly
US4507831 *Nov 22, 1982Apr 2, 1985Marathon Manufacturing CompanySpring clip for tilter worm shaft
US4716667 *Sep 25, 1986Jan 5, 1988Gh Hensley Industries, Inc.Excavating tooth and wear cap assembly
US5077918 *Sep 10, 1990Jan 7, 1992Caterpillar Inc.Cutting edge assembly for an implement
US5224555 *Dec 18, 1991Jul 6, 1993Bucyrus Blades, Inc.Wear element for a scraping operation
US5666748 *Dec 11, 1995Sep 16, 1997Esco CorporationWear cap and components useable therewith
US5713145 *Mar 12, 1996Feb 3, 1998Gh Hensley Industries, Inc.Wear resistant excavating apparatus
US6041529 *Mar 18, 1998Mar 28, 2000G. H. Hensley Industries, Inc.Bolt-on wear runner assembly for material handling/displacement apparatus
US6101920 *Apr 8, 1998Aug 15, 2000Hygrama AgPneumatic or hydraulic cylinder with piston position detector mounted in longitudinal groove in cylinder tube surface
US6848203 *Aug 19, 2002Feb 1, 2005Caterpillar IncBase edge protection system and method
US7204180 *Sep 11, 2002Apr 17, 2007Technoplast Kunststofftechnik GmbhApparatus for cutting plastic profiles
US7266914 *Dec 28, 2004Sep 11, 2007Peninsula Alloy Inc.Wear plate assembly
EP2227603A1 *Nov 27, 2008Sep 15, 2010Atlas Copco Rock Drills ABWear part for a bucket to a loading or digging machine, fastening unit therefore and wear part system, bucket and loading or digging machine
Classifications
U.S. Classification37/446, 403/375, 37/453, 83/831, 403/380, 403/287
International ClassificationE02F9/28
Cooperative ClassificationE02F9/2833
European ClassificationE02F9/28A2C
Legal Events
DateCodeEventDescription
Jun 12, 1986ASAssignment
Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905
Effective date: 19860515
Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905