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Publication numberUS3841007 A
Publication typeGrant
Publication dateOct 15, 1974
Filing dateNov 24, 1972
Priority dateNov 24, 1972
Also published asCA981724A1
Publication numberUS 3841007 A, US 3841007A, US-A-3841007, US3841007 A, US3841007A
InventorsR Howarth, E Wilson
Original AssigneeCaterpillar Tractor Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Detachable cutting edge and tip adapter for loader buckets
US 3841007 A
Abstract
A loader bucket has a cutting edge mounted on the bottom surface of a forwardly extending plate thereof. A support member, welded to a top surface of the support plate, has an adapter mounted thereon which carries an earthworking tip extending forwardly of the cutting edge. A releasable bolt extends through the cutting edge, support plate, support member and adapter to detachably mount the cutting edge and adapter on the bucket.
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Description  (OCR text may contain errors)

United States Patent Howarth et a1.

DETACHABLE CUTTlNG EDGE AND TIP ADAPTER FOR LOADER BUCKETS Inventors:

Assignee:

Filed:

Appl. No.:

Richard C. Howarth; Eugene M.

Wilson, both of Joliet, 111.

Caterpillar Tractor Co., Peoria, 111,

Nov. 24, 1972 U.S. Cl. 37/141 R, 172/702 Int. Cl...., E02f 9/28 Field of Search 37/141; 172/702 References Cited UNITED STATES PATENTS Black 37/142 A Rehally 37/141 T Voit 37/141 T X Brune 37/141 T MacFadyen 1 37/141 T Van Buskirk i 37/141 T Oct. 15, 1974 1,992,591 2/1935 Whisler 37/141 T 2,164,988 7/1939 DeBiasi 37/141 T 2,824,392 2/1958 Reinhard 37/141 T 3,093,917 6/1963 Schroeder 37/141 T 3,550,293 12/1970 Helton 37/141 T Primary Examiner -Robert E. Pulfrey Assistant Examiner-E. H. Eickholt Attorney, Agent, or Firm-Phillips, Moore, Weissenberger 5 7 ABSTRACT A loader bucket has a cutting edge mounted on the bottom surface of a forwardly extending plate thereof. A support member, welded to a top surface of the support plate, has an adapter mounted thereon which carries an earthworking tip extending forwardly of the cutting edge. A releasable bolt extends through the cutting edge, support plate, support member and adapter to detachably mount the cutting edge and adapter on the bucket.

4 Claims, 4 Drawing Figures mmm n slam 3.841 goo?- J DETACHABLE CUTTING EDGE AND TIP ADAPTER FOR LOADER BUCKETS BACKGROUND OF THE INVENTION Loader buckets and similar types of earthworking implements have a cutting blade mounted on a forward end thereof and a plurality of transversely spaced earthworking tips mounted on the cutting edge. Many attempts have been made to detachably mount the cutting edge and/or tips on the bucket to facilitate their periodic replacement. For example, US. Pat. No. 3,550,293, assigned to the assignee of this application, discloses such a replaceable arrangement.

SUMMARY OF THIS INVENTION An object of this invention is to provide an economical and non-complex detachable cutting edge and tip adapter for an earthworking implement which exhibits a high degree of structural integrity. The implement, such as a loader bucket, has a forwardly extending support plate which mounts a cutting edge on a bottom side thereof. A support member is fixedly secured to a top side of the support plate and an adapter is mounted on the support member to have an earthworking tip thereof extend forwardly of a forward edge of the cutting edge. Common attaching means extend through each of the cutting edge, support plate, support member, and adapter to detachably mount the cutting edge and adapter onthe implement.

BRIEF DESCRIPTION OF THE DRAWINGS Other objects of this invention will become apparent from the following description and accompanying drawings wherein:

DETAILED DESCRIPTION FIGS. 1-3 illustrate an earthworking implement 10, such as a loader bucket, comprising a forwardly extending bottom support plate 11 having a support member 12 secured to a top surface thereof by welds 13. Although the hereinafter described detachable cutting edge and tip adapter are particularly adapted for loader bucket applications, it should be understood that such constructions may be employed on the work implements of scrapers, motor graders and other types of earthworking machines. A reversible cutting edge 14, preferably in the form of a flat plate extending transversely the full width of the loader bucket, is mounted on a bottom side of the support plate to extend past a forward edge thereof.

As shown in FIG. 3, support member 12 has an inverted U-shape to define alongitudinally extending groove 15 therein. An adapter 16 has a rectangularly shaped tongue 17 formed thereon which fits snuggly in like-shaped groove 15 to form a closely mating tongue and groove arrangement thereat, preventing the adapter from moving laterally. A pin 18 (FIG. 2) ex- LII tends transversely through the support member and the adapter in press-fit relationship therewith to prevent the rearward end of the adapter from moving vertically.

Common attaching means, preferably comprising a nut 19 threadably mounted on the end of a bolt 20, extends through the cutting edge, support plate, support member and adapter. The attaching means thus detachably mounts the cutting edge and the adapter on the support plate and the support member, respectively. The bolt has a comically-shaped head 21 which is nested in a like-shaped recess formed in the cutting edge.

The forward end of support member 12 abuts laterally spaced bearing surfaces 22 (FIG. 1 formed on the adapter to transmit digging forces from the adapter directly to the support member and the support plate. A digging tip 23 is detachably mounted on a forward end of the adapter by a press-fitted pin 24. The tips (one shown) extend forwardly of a forward edge of cutting edge 14 to cooperate therewith during the earth digging and loading functions. Although only a single bolt 20 is required to attach the adapter. in place, additional bolts may be required to attach the cutting edge directly to support plate 11, between each pair of laterally spaced adapters.

FIG. 4 illustrates a modification of the FIG. 3 tongue and groove arrangement wherein like numerals are employed to depict corresponding constructions. Numerals depicting modified constructions are accompanied by an a. In particular, a support member 12a has a longitudinally extending groove 15a formed therein which has an inverted T-shaped cross section. An adapter 16a has a like-shaped tongue 17a, disposed in the groove, to prevent the adapter from moving both vertically and laterally relative to the support member. Therefore, the FIG. 4 tongue and groove arrangement does not necessitate the further employment of a crosspin, corresponding to pin 18 in FIG. 2.

What is claimed is:

1. An earthworking implement having a forwardly extended support plate,

a cutting edge mounted on a bottom side of said support plate and extending past a forward edge thereof,

a support member fixedly secured to a top side of said support plate, 1

an adapter mounted on said support member and having a removably secured earthworking tip thereon extendingforwardly of a forward edge of said cutting edge, and said adapter being mounted on said support member by a closely mating tongue formed integrally therwith and a mating groove arrangement formed in said support member extending longitudinally therealong, respectively said adapter having substantial surface portions formed thereon to abut a forward end of said support member for transmitting forces from said tip to said support member and support plate directly,

common attaching means constituting a single bolt extending through each of said cutting edge, support plate, support member and adapter detachably mounting said cutting edge and adapter on said support plate and support member, respectively, j

pin means disposed rearwardly on said tongue and groove arrangement and extending transversely 3. The invention of claim 1 wherein said tongue and groove each has a rectangular cross section.

4. The invention of claim 1 wherein said tongue and groove each has an inverted T-shaped cross section.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1107253 *Nov 12, 1913Aug 18, 1914Edgar Allen American Manganese Steel CompanyDipper-tooth.
US1217500 *May 26, 1915Feb 27, 1917John J RehallyDigging-bucket.
US1719576 *Sep 18, 1928Jul 2, 1929Voit Grover CMining bucket
US1885326 *Feb 6, 1930Nov 1, 1932William H BruneDigging teeth and means for mounting them upon excavating implements
US1920873 *Feb 11, 1932Aug 1, 1933Taylor Wharton Iron & Steel CoExcavating apparatus
US1959847 *Jul 31, 1931May 22, 1934Lesher W Van BuskirkDipper construction and the like
US1992591 *Feb 12, 1934Feb 26, 1935American Manganese Steel CoDipper tooth and front for excavating dippers
US2164988 *Oct 22, 1938Jul 4, 1939De Biasi Charles PClamshell bucket
US2824392 *Jan 7, 1955Feb 25, 1958Richard B ReinhardLoading bucket cutting edge construction
US3093917 *Dec 6, 1961Jun 18, 1963Allis Chalmers Mfg CoBucket structure
US3550293 *Jul 23, 1968Dec 29, 1970Caterpillar Tractor CoLoader bucket cutting edge
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3974579 *Feb 4, 1975Aug 17, 1976Caterpillar Tractor Co.Bucket tooth adapter support and load transfer means
US3982339 *Feb 24, 1975Sep 28, 1976Lennart NilssonReversible slide-on digger tooth with easy removal arrangement
US3984929 *Oct 8, 1975Oct 12, 1976Caterpillar Tractor Co.Detachable cutting edge and tip-adapter arrangement for loader buckets
US4052803 *Oct 18, 1976Oct 11, 1977Caterpillar Tractor Co.Loader bucket cutting edge with recessed bolt studs and method
US4120105 *Aug 15, 1977Oct 17, 1978Caterpillar Tractor Co.Bucket adapter with load absorbing means
US4136469 *Jun 10, 1977Jan 30, 1979Zepf Hans RudolfShovel tooth
US4208815 *Jun 9, 1978Jun 24, 1980Julius Ralph YunkerStraight edge blade for installation on an earth moving bucket
US5077918 *Sep 10, 1990Jan 7, 1992Caterpillar Inc.Cutting edge assembly for an implement
US5325615 *Mar 29, 1993Jul 5, 1994Esco CorporationAttachments for excavating buckets
US5653048 *Nov 6, 1995Aug 5, 1997Esco CorporationWear assembly for a digging edge of an excavator
US6848203 *Aug 19, 2002Feb 1, 2005Caterpillar IncBase edge protection system and method
US6986216Apr 30, 2003Jan 17, 2006Esco CorporationWear assembly for the digging edge of an excavator
US7080470Apr 30, 2003Jul 25, 2006Esco CorporationWear assembly for excavator digging edge
US7299570Sep 14, 2005Nov 27, 2007Esco CorporationWear assembly for an excavator
US7451558Aug 31, 2005Nov 18, 2008Esco CorporationWear assembly for excavating digging edge
US7596895Apr 30, 2007Oct 6, 2009Esco CorporationWear assembly
US7658024 *Jul 6, 2006Feb 9, 2010H&L Tooth CompanyUniversal digging tooth attachment apparatus
US7793444Sep 28, 2006Sep 14, 2010Esco CorporationWear edge assembly
USRE42629Aug 5, 1999Aug 23, 2011Esco CorporationWear assembly for a digging edge of an excavator
EP0015890A1 *Jan 31, 1980Sep 17, 1980Vereinigte Edelstahlwerke Aktiengesellschaft (Vew)Cutter head for suction dredges
WO1993013272A1 *Dec 21, 1992Jul 8, 1993Esco CorpAttachments for excavating bucket
Classifications
U.S. Classification37/455, 37/449, 172/702
International ClassificationE02F9/28
Cooperative ClassificationE02F9/2816
European ClassificationE02F9/28A2
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
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905
Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS