US3805422A - Adjustable sidecutter for excavator buckets and the like - Google Patents

Adjustable sidecutter for excavator buckets and the like Download PDF

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Publication number
US3805422A
US3805422A US00317186A US31718672A US3805422A US 3805422 A US3805422 A US 3805422A US 00317186 A US00317186 A US 00317186A US 31718672 A US31718672 A US 31718672A US 3805422 A US3805422 A US 3805422A
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US
United States
Prior art keywords
bracket
bucket
cutting blade
journal
eccentric
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
US00317186A
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English (en)
Inventor
V Stepe
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Priority to US00317186A priority Critical patent/US3805422A/en
Priority to CA185,898A priority patent/CA990760A/en
Priority to GB5757973A priority patent/GB1419584A/en
Priority to JP48141954A priority patent/JPS4997405A/ja
Application granted granted Critical
Publication of US3805422A publication Critical patent/US3805422A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets

Definitions

  • the sidecutters comprise cutting blades adjustably mounted in brack- [56] References Cited ets secured directly to the side of the bucket.
  • the cutting blades are each pivotally supported in the brack- UNITED STATES PATENTS ets and are engaged by suitable eccentrics which are Long u. operative to adjust the angular positio of the c tti g 3 1 :2 blades with respect to the side walls of the bucket.
  • the present invention is directed to excavator buckets and pertains more particularly to an excavator bucket having adjustable sidecutters to provide adjustable width of a cut that may be taken with the bucket.
  • Back hoes and hydraulic excavators are quite versatile machines and are commonly used for ditching or trenching for utility lines, building foundations and the like. Any one particular job may require that a contractor provide a number'of trenches of different widths. It has been the common practice in the past to use buckets of different widths for the different width trenches.
  • Another object of the present invention is to provide a self-contained adjustable cutting blade attachment for an excavator bucket.
  • a further object of the present invention is to provide an improved mounting and adjustment means for a cutting blade attachment for anexcavator bucket.
  • a cutting blade having a bracket for attachment to the side of an excavator bucket.
  • the cutting blade is adjustably carried by a bracket and hinge and is adjustably, positioned with respect to the side wall of the bucket by means of eccentric adjusting means.
  • FIG. 1 is a side elevational view of a hydraulic excavator embodying the present invention
  • FIG. 2 is an enlarged elevational view of the, cutting blade attachment of FIG. 1 shown secured to a portion of the bucket;
  • FIG. 3 is a front view of the bucket and cutting blade attachments
  • FIG. 4 is a sectional view taken generally along lines 4-4 of FIG. 3; I
  • FIG. 5 is a sectional view taken generally along lines 55 of FIG. 3;
  • FIG. 6 is an exploded view of the cutting blade attachment of FIG. 1;
  • FIG. 7 is a plan view of an alternate embodiment of the present invention.
  • FIG. 8 is a view like FIG. 7 with the cutter blade shown in an outwardly adjusted position
  • FIG. 9 is a perspective view of the mounting bracket of the FIG. 7 embodiment.
  • FIG. 10 is a side view of the bracket of FIG. 9.
  • FIG. 11 is a sectional view taken generally along lines ll--llofFlG. 7. 1
  • FIG. 1 there is illustrated an excavator of conventional design designated generally by the numeral 10 having a bucket 12 appropriately carried on the usual linkage arrangement.
  • an adjustable sidecutter constructed in accordance with the present invention generally designated by the numeral 14. Since both of the sidecutters'l4 are identical in construction and symmetrical so that each may be secured to either side of the bucket, only a single sidecutter will be specifically described with identical reference numerals applied to identical parts of both sidecutters.
  • the excavator bucket is comprised of a back wall 16, side walls 18 and 20, and a bottom 22.
  • the bottom 22 terminates in a forward edge formed as a lower cutting edge 24 of the bucket.
  • the sidecutter 14 comprises a bracket member 26 secured in a suitable manner such'as by means of a plurality of bolts 28 to the sidewalls l8 and 20 of the bucket.
  • Adjustably and pivotally carried by the bracket 26 is a forwardly extending cutting blade having a forwardly directed cutting edge 30, a central body portion 32, and a rearwardly directed or extending shank 34.
  • the cutting edge 30 of the cutter blade extends outward to exceed the width of the excavator bucket as well as forward in front of the leading edge of the sidewalls. This presents a cutting edge forward of the sidewalls so that in effect, in the area of the bucket corners, the cutting blade takes the wear in place of the sidewalls.
  • bracket member 26 is provided or constructed of a bifurcated section defining a pair of spaced apart journal support members 38 and 40 having respective bores 42 and 44 in co-axial alignment formed therein.
  • the eccentric means basically comprises a pin or shaft 46 having a pair of eccentrics 48 and 50 to be received in and to provide intimate contact or engagement with the walls of a bore 52 formed in a central body portion 32 of the cutting blade.
  • the shaft 46 is suitably secured by a pair of studs or bolts 54 and 56 in journal bore support members or bores 42 and 44. These studs or bolts 54 and 56 also comprise the extensions of the shaft 46 as well as assist in securing the eccentric means against rotation.
  • the eccentric means and more particularly shaft 46 is provided with extensions 58 and 60 having suitable splines or serrations as indicated for engaging complementary or corresponding splines 62 and 64 formed on the journal support numbers 38 and 40. These serrations of members 58 and 60 in cooperation with serrations 62 and 64 together with bolts 54 and 56 provide means for securing the eccentric means against rotation.
  • Adjustment of the embodiment as shown in FIG. 6 is accomplished by removal of bolts 54 and 56 which permits the serrations of extensions 58 and 60 to come out of engagement with serrations 62 and 64 on the channel support members 38 and 40 so that the eccentric means may be rotated around its axis to the proper angle to provide the proper adjustment of the cutter blade.
  • the eccentric means is then pressed back into the proper alignment with bores 42 and 44 so as to bring the serrations of extensions 58 and 60 into engagement with serrations 62 and 64 and, at the same time, bolts 54 and 56 must be extended through bores 42 and 44 and received into suitably threaded bores within the ends of the shaft 46. The bolts 54 and 56 are then tightened to secure the blade in its adjustment.
  • FIGS. 7 through 11 there is illustrated an alternate embodiment of the present invention wherein the distinction lies principally in the construction of the bracket member and in the eccentric means.
  • the cutting blade of this embodiment is identical to that of the previous embodiment and is pivotally supported in a manner similar to that of the previous embodiment whereby eccentric means journaled in the bracket member is operative to adjust the outward position of the cutting edge 30 in relation to the side wall 18 of the excavator bucket thereby determining the width of the cut taken by the bucket.
  • the bracket member comprises a first or base member 66 having a recess or socket 68 for receiving the end of shank 34 to provide a fulcrum or pivot means as in the previous embodiment.
  • An interlocking generally C-shaped insert 70 is cooperatively received or interlocked with the base member 66 and together therewith forms or defines spaced apart journal support members 72 and 74.
  • the insert member 70 comprises a pair of outwardly extending legs 69 and 71 interconnected by a central base member. Each leg is formed with a semi-cylindrical portion as shown to define a portion of a cylindrical bore 76.
  • the journal support members then define a cylindrical bore 76 forming a journal bearing support for upper end or journal portion 78 of a shaft including camming means such as an eccentric body portion 80 and a lower cylindrical journal 82 which is rotatably supported in a lower cylindrical bore or journal bearing 84.
  • the journal bearings 76 and 84 are comprised of separate semi-cylindrical portions defining a bore, each of which is formed in separate ones of the base member 66 and the insert 70.
  • the cap member is formed in the base member 66 and the base portion of the bearing is formed in the insert member 70.
  • the interlocking construction of the base member 66 and the insert member 70 is such that the insert is retained in position by the base thereof engaging sidewall 18 of the bucket without the need for fasteners between these members.
  • the lateral position of the insert 70 is assured by the I-shaped configuration of the base thereof and its reception into a similarly formed slot in the base of the base bracket member 66.
  • the eccentric cam means 80 engages the bore 52 on the cutter member as in the previous embodiment to determine the adjustment of the cutting blade or edge 32.
  • the adjustment of the cam or eccentric means is retained by suitable means such as a cap screw or bolt 86 which extends down into and is threadably received in a bore 88.
  • suitable means such as a cap screw or bolt 86 which extends down into and is threadably received in a bore 88.
  • the arrangement is such that tightening of cap screw 86 against washer 90 pulls the washer into tight engagement with the side ofjournal support member 72 and brings the shoulder 92 into tight frictional engagement with the inner wall of the journal support member 72 to thereby secure the eccentric means in the adjusted position.
  • the assembly of this embodiment is accomplished by removing the insert 70 from body member 66 and inserting the shank 34 of cutting member into the recess or socket 68 and adjusting the cutting blade so that the eccentric member 80 can be received in bore 52 with the journal portions 78 and 82 of the shaft means received in the cap portion of the bores 76 and 84.
  • the insert member 70 is then slid into place as shown in FIG. 9 so that the body portion of the bores defined by the end members of the bracket or insert 70 completes the bearing support.
  • Cylindrical bearing members or bores 76 and 84 receive and retain the eccentric shaft 80 in position against the respective journal support members with engagement of the shoulders 92 and 94 of shaft 80 retaining it into its axial position.
  • the insert 70 is then retained in its position by the bracket 66 and engagement against the sidewall of the bucket as shown in FIG. 8. Adjustment of the cutting blade is then accomplished by rotation of the eccentric shaft 80 so that the cutting blade 30 is in a desired outward position with respect to the sidewall 18. Rotation of the eccentric 80 is accomplished by the insertion of a pin or other suitable tool in any one of a number of bores 96 which register with an opening 98 formed in central body portion 32 of the cutting blade. Cap screw 86 is then tightened down to secure the eccentric means 80 against rotation. Further adjustments require only that the cap screw 86 be loosened and the eccentric means 80 be rotated.
  • a simple, rugged and effective adjustable sidecutter means for excavator buckets that comprises a base member having a cutting blade adjustably supported therein with eccentric means provided for operatively engaging the cuttingblade and determining its position of adjustment.
  • An excavator bucket said bucket comprising:
  • a receptacle defined by a pair of side walls interconnected by means of a backwall and a bottom;
  • an adjustable cutting blade having a cutting edge and a shank extending from a central body portion secured to and extending forward from each of said side walls;
  • a bracket for securing said cutting blade to said side wall and comprising camming means operative to adjust said cutting blade with respect to said side walls to thereby adjust the cutting width of said bucket;
  • said bracket having a recess for pivotally receiving the outer end of said shank
  • said camming means comprises eccentric means disposed in and engaging said bore.
  • bracket includes a pair of spaced-apart journal means
  • said eccentric means includes a shaft rotatably supported in said journal means;
  • journal means comprises a pair of spaced journal caps integral with said bracket;
  • bracket comprises a pair of spaced journal bearing caps integral with said bracket;
  • An adjustable excavator bucket said bucket comprising:
  • a receptacle defined by a pair of vertical side walls interconnected bymeans of a backwall and a bottom;
  • an adjustable cutting blade pivotally secured to and including a cutting edge extending forward from each of said side walls;
  • said cutting blade including a central body portion having a bore formed therein and a shank extending in the opposite direction from said cutting edge;
  • bracket includes a pair of spaced apart journal means
  • said eccentric means includes a shaft rotatably supported in said journal means;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Shovels (AREA)
US00317186A 1972-12-21 1972-12-21 Adjustable sidecutter for excavator buckets and the like Expired - Lifetime US3805422A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US00317186A US3805422A (en) 1972-12-21 1972-12-21 Adjustable sidecutter for excavator buckets and the like
CA185,898A CA990760A (en) 1972-12-21 1973-11-15 Adjustable sidecutter for excavator buckets and the like
GB5757973A GB1419584A (en) 1972-12-21 1973-12-12 Excavator bucket having adjustable side cutter attachments
JP48141954A JPS4997405A (cs) 1972-12-21 1973-12-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00317186A US3805422A (en) 1972-12-21 1972-12-21 Adjustable sidecutter for excavator buckets and the like

Publications (1)

Publication Number Publication Date
US3805422A true US3805422A (en) 1974-04-23

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Application Number Title Priority Date Filing Date
US00317186A Expired - Lifetime US3805422A (en) 1972-12-21 1972-12-21 Adjustable sidecutter for excavator buckets and the like

Country Status (4)

Country Link
US (1) US3805422A (cs)
JP (1) JPS4997405A (cs)
CA (1) CA990760A (cs)
GB (1) GB1419584A (cs)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941262A (en) * 1974-02-01 1976-03-02 Caterpillar Tractor Co. Pivotally disposable bucket
FR2318278A1 (fr) * 1975-07-17 1977-02-11 Unit Rig & Equip Excavatrice-chargeuse munie d'une roue excavatrice equipee de dents laterales
US4601119A (en) * 1984-10-01 1986-07-22 Caterpillar Tractor Co. Corner tooth for a bucket
US5918390A (en) * 1995-03-30 1999-07-06 Ruff; Thomas Bucket for a mechanical excavator
USD522535S1 (en) 2005-02-23 2006-06-06 Caterpillar Inc. Sidecutter
US20070101622A1 (en) * 2004-08-24 2007-05-10 Lahood James R Edge protector assembly for bucket assembly
US20070175071A1 (en) * 2006-02-01 2007-08-02 Priest Joe W End loader bucket attachment
USD554157S1 (en) * 2006-07-26 2007-10-30 Caterpillar Inc. Sidecutter
USD562356S1 (en) * 2006-02-24 2008-02-19 Echigo Shoji Co., Ltd. Side cutter for bucket
US7530779B2 (en) 2007-09-28 2009-05-12 Cnh America Llc Cam-lock mechanism for attachment of implements to prime movers
US9015970B1 (en) 2014-01-24 2015-04-28 Northland Leasing Inc. Convertible bucket having folding wings and winglets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811681C2 (de) * 1978-03-17 1986-10-09 Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen Ladeschaufel, insbesondere für Seitenkipplader

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462790A (en) * 1946-06-05 1949-02-22 Jaeger Machine Co Bucket structure for excavators and loaders
US2556592A (en) * 1949-05-23 1951-06-12 William A Markkula Tractor barn cleaner for gutterless barns
US3089261A (en) * 1961-06-21 1963-05-14 Roy A Flath Cutter blade attachment for excavator bucket
US3235982A (en) * 1963-04-16 1966-02-22 Verne A Krohn Blinding tool for drain tiles and the like
US3286377A (en) * 1963-11-20 1966-11-22 Glenn H Long Trenching hoe having spread footing cutting means
GB1134090A (en) * 1966-10-13 1968-11-20 Alexander Ritchie Improvements in and relating to side cutters for diggers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462790A (en) * 1946-06-05 1949-02-22 Jaeger Machine Co Bucket structure for excavators and loaders
US2556592A (en) * 1949-05-23 1951-06-12 William A Markkula Tractor barn cleaner for gutterless barns
US3089261A (en) * 1961-06-21 1963-05-14 Roy A Flath Cutter blade attachment for excavator bucket
US3235982A (en) * 1963-04-16 1966-02-22 Verne A Krohn Blinding tool for drain tiles and the like
US3286377A (en) * 1963-11-20 1966-11-22 Glenn H Long Trenching hoe having spread footing cutting means
GB1134090A (en) * 1966-10-13 1968-11-20 Alexander Ritchie Improvements in and relating to side cutters for diggers

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941262A (en) * 1974-02-01 1976-03-02 Caterpillar Tractor Co. Pivotally disposable bucket
FR2318278A1 (fr) * 1975-07-17 1977-02-11 Unit Rig & Equip Excavatrice-chargeuse munie d'une roue excavatrice equipee de dents laterales
US4601119A (en) * 1984-10-01 1986-07-22 Caterpillar Tractor Co. Corner tooth for a bucket
US5918390A (en) * 1995-03-30 1999-07-06 Ruff; Thomas Bucket for a mechanical excavator
US20070101622A1 (en) * 2004-08-24 2007-05-10 Lahood James R Edge protector assembly for bucket assembly
USD522535S1 (en) 2005-02-23 2006-06-06 Caterpillar Inc. Sidecutter
US20070175071A1 (en) * 2006-02-01 2007-08-02 Priest Joe W End loader bucket attachment
US7429159B2 (en) 2006-02-01 2008-09-30 Priest Joe W End loader bucket attachment
USD562356S1 (en) * 2006-02-24 2008-02-19 Echigo Shoji Co., Ltd. Side cutter for bucket
USD554157S1 (en) * 2006-07-26 2007-10-30 Caterpillar Inc. Sidecutter
US7530779B2 (en) 2007-09-28 2009-05-12 Cnh America Llc Cam-lock mechanism for attachment of implements to prime movers
US9015970B1 (en) 2014-01-24 2015-04-28 Northland Leasing Inc. Convertible bucket having folding wings and winglets

Also Published As

Publication number Publication date
CA990760A (en) 1976-06-08
JPS4997405A (cs) 1974-09-14
GB1419584A (en) 1975-12-31

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Legal Events

Date Code Title Description
AS Assignment

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

Effective date: 19860515