US3748763A - Bucket tooth construction for the buckets of construction equipment - Google Patents

Bucket tooth construction for the buckets of construction equipment Download PDF

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Publication number
US3748763A
US3748763A US00150572A US3748763DA US3748763A US 3748763 A US3748763 A US 3748763A US 00150572 A US00150572 A US 00150572A US 3748763D A US3748763D A US 3748763DA US 3748763 A US3748763 A US 3748763A
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United States
Prior art keywords
tooth
bucket
construction
holder
cap
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Expired - Lifetime
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US00150572A
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English (en)
Inventor
H Zepf
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Individual
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Individual
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Publication of US3748763A publication Critical patent/US3748763A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins

Definitions

  • the largl i l l li i est profile or section of the tooth holder approximately e a y 1,395,048 10/1921 McKee 37/142 R fggz gs to the largest profile or Scam of the 1,815,820 7/1931 Andersen 37/142 R 2,092,311 9/1937 Hosmer et a1 37/142 R X 8 Claims, 4 Drawing Figures 4 l 2 3 6 l0 7 l8 PAIENTED JUL3. 1
  • the present invention relates to improvements in construction equipment and more specifically deals with a new and improved bucket or scoop tooth construction for the buckets of construction equipment, especially for bucket-wheel excavators, wherein the bucket tooth is of the type embodying a portion which protrudes past the bucket blade or knife, a tooth cap being detachably secured to this protruding portion of the bucket tooth.
  • the prior art is already familiar with different constructions of bucket teeth for complementing or fitting onto the bucket blade or knife of the buckets or scoops of excavators and other construction equipment.
  • the bucket teeth constitute a component which is subject to wear, and therefore must be periodically replaced.
  • the portion of each bucket tooth which protrudes past the edge of the bucket blade is subjected to the greatest wear, and therefore construction have become known wherein this portion is detachably connected in the form of a cap member. Until such time as its is necessary to exchange the entire tooth it is possible to exchange a number of such tooth caps, so that the costs can be appropriately reduced.
  • a primary object of this invention is to provide just such new and improved bucket tooth construction for such buckets of construction equipment which is not associated with the aforementioned drawbacks of the prior art constructions and which effectively and reliably fulfills the existing need in the art.
  • Still another and more specific object of the present invention is to provide a novel construction of bucket tooth which can be effectively employed for all bucket models, which possesses a form which can be simply and easily secured to the bucket blade or knife and wherein the tooth cap possesses relatively small dimensions so that already by rcplacementthereof appreciablc savings can he realized, and wherein notwithstanding the above the bucket tooth possesses good strength characteristics, provides a good support for the tooth cap and exhibits slight body resistance.
  • Yet a further significant object of the instant invention is to provide a bucket tooth construction which can be easily and inexpensively manufactured, attached to a bucket blade in a very simple and rapid manner, and is equipped with a tooth cap which can be equally easily replaced when required, the tooth cap being supported in a positive manner at the tooth construction, yet in a way where it can be easily detached therefrom.
  • the invention contemplates the provision of a novel bucket tooth construction of the previously mentioned type wherein the portion of the tooth support or holder which does not protrude past the bucket blade is welded to the inside of the bucket blade and possesses at least the same length as the protruding portion of such tooth holder, and wherein the largest section or profile of the tooth holder approximately corresponds to the largest section or profile of the tooth cap.
  • FIG. I is a side view, partially in section, of a first embodiment of inventive bucket tooth construction
  • FIG. 2 is a plan view of the bucket tooth construction depicted in FIG. 1;
  • FIG. 3 is a side view, again partially in section, of a further embodiment of bucket tooth construction of this invention.
  • FIG. 4 is a plan view of the bucket tooth construction depicted in FIG. 3.
  • reference numeral 1 designates the bucket blade ro knife of, for instance, an excavator bucket or scoope.
  • Bucket blade I is provided at its forward edge with a bevelled portion 2.
  • a tooth support or holder 3 which advantageously can be welded at its edge 4 with the bucket blade 1.
  • the portion 3a of the tooth holder 3 which bears upon the bucket blade 1 can be accommodated to the configuration of such bucket blade 1, in other words can be provided, for instance, also with a bevelled portion 5 which coincides with the bevelled portion 2 of the bucket blade 1. It is important that the length of the tooth holder or support 3 is sufficiently large in order to render possible a faultless attachment of such tooth holder 3 to the bucket blade 1.
  • the tooth holder 3 is provided with a portion 6 which extends past the free edge or end of the bucket blade 1, this protruding portion 6 possessing a substantially wedge-shaped configuration and carrying a tooth cap or cap member 7.
  • Tooth cap 7 is provided with an internal recess, indicatcd at 7a, possessing an inner shape such that it can be tightly fitted onto the protruding wedge-shaped portion 6 of the tooth holder 3.
  • Bores 9, 10, II are provided at the tooth cap 7 and at the protruding portion 6 of the tooth support 3, and which after mounting of the cap 7 at protruding portion 6 align with one another.
  • a securing pin 12 for instance a heavy-duty tightening pin, or some equivalent fastening element, which prevents undesired detachment of the tooth cap 7.
  • a securing pin 12 for instance a heavy-duty tightening pin, or some equivalent fastening element, which prevents undesired detachment of the tooth cap 7.
  • the tooth holder 3 together with the tooth cap 7 does not extend past the plane which is formed by the lower face la of the bucket or scoop blade 1, whereby no limitations exist as to the utilization of such bucket construction, as otherwise would be the case if the bucket teeth extend at the lower face of the bucket blade.
  • Such limitations would possibly occur, for instance, in snow clearing work, in other words in those operations where the support surface, such as the covering of a road or pavement, should not be subjected to the possible damage of protruding teeth.
  • the profile or section of the bucket tooth possesses a low body resistance and this can be accomplished by providing same with a very small peripheral surface area.
  • the tooth holder 3 is provided at its largest cross-section with an approximately quadratic or square profile which rearwardly slowly reduces in size and flattens out.
  • the tooth cap 7 likewise advantageously is designed such that at its largest cross-section it also has a quadratic or square profile, so that when the tooth cap 7 is mounted at the tooth holder 3 it approximately aligns with such tooth holder.
  • the spine or back of the tooth holder 3 is provided with marginal ribs 14 between which there is provided a somewhat smaller central rib 15.
  • the recessed portions located between the ribs 14, 15 of the holder 3 can be advantageously constructed such that they possess rounded transition locations 16 in order that the material can slide better out of the bucket. Notwithstanding the fact that there is achieved a saving in material by virtue of the use of these ribs 14, 15 still the strength of the tooth holder is not impaired.
  • FIGS. 3 and 4 there is depicted a further embodiment of the inventive bucket tooth construction and wherein, for convenience in explanation and illustration, the same reference characters have been generally employed in this embodiment as used for similar or analogous components to those considered heretofore with regard to the first embodiment discussed above in connection with FIGS. 1 and 2.
  • FIGS. 3 and 4 it is to be understood that a noteworthy feature thereof is that special measures have been adopted for improving the support of the tooth cap 7 at the wedge-shaped portion 6 through the provision of additional support surfaces.
  • a support surface 21 At the tip 20 of the wedge-shaped portion 6 of the tooth holder 3 there is provided a support surface 21.
  • Two further support surfaces 22 and 23 are provided at both side walls of the wedge-shaped portion 6 at the neighborhood of its transition into the largest profile of the bucket tooth.
  • the support surfaces 22 and 23 bound or delimit two nose members 24 and 25, the side surfaces of which are approximately flush with the sides of the largest profile of the bucket tooth.
  • the support surfaces 21, 22 and 23 considered above cooperate with appropriate counter support surfaces 26, 27 and 28 formed at the base and at the side walls of the wedgeshaped recess 7a of the tooth cap 7.
  • Appropriate or correspondingly shaped recesses 32 and 33 are provided at the side walls 29, 30 of the tooth cap 7 for the nose members 24, of the tooth holder 3,
  • the support surfaces 21, 22, 23 of the tooth holder 3 and the counter support surfaces 26, 27, 28 of the tooth cap 7 are advantageously approximately parallel to the underside or underface la of the bucket blade 1. In so doing, it is advantageous if the support surface 21 at the tip 20 of the tooth holder 3 is directed away from the underface 1a of the bucket blade 1 and if both support surfaces 22, 23 are directed towards the underface of such bucket blade 1.
  • the additional support surfaces 21, 22, 23 and their counter support surfaces 26, 27, 28, owing to the particular manner that they have been arranged, are especially suited for taking-up forces which occur at the tooth cap 7 and transmitting such to the tooth holder 3.
  • both of the described bucket tooth constructions fulfill all of the prerequisites for economical utilization thereof. Owing to the fact that such tooth constructions are exclusively attached to the inside of the bucket blade 1 they can be used practically at all constructions of bucket blades which might be encountered. It is here also mentioned that the tooth holder and the tooth cap mounted thereon are positioned such that they are either disposed above or substantially flush with the plane taken through the underface of the bucket blade. Additionally, the tooth cap 7 only constitutes a very slight portion of the total bucket tooth weight. Furthermore, it is also possible to provide the tooth cap 7 with slight depressions or recesses l7, l8 sothat along with the wear of the tooth cap there occurs a self-grinding effect.
  • a bucket tooth construction for the buckets of construction equipment, especially bucket excavators comprising, in combination, a bucket blade, a tooth holder attached to only the inside surface of said bucket blade, said tooth holder being attached by weld bucket blade, a tooth cap having a socket completely surrounding and detachably secured to said protruding portion of the tooth holder, the portion of the tooth holder which does not protrude past the bucket blade having a length which is at least equal to the length of the protruding portion of said tooth holder, the shape and size of the largest profile of the tooth holder being substantially the same as the shape and size of the largest profile of the tooth cap, the bottom surface of said tooth holder and said tooth cap being flush with a plane defined by the undersurface of said bucket blade.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
US00150572A 1970-06-09 1971-06-07 Bucket tooth construction for the buckets of construction equipment Expired - Lifetime US3748763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH862470A CH527977A (de) 1970-06-09 1970-06-09 Schaufelzahn an einer Schaufel einer Baumaschine

Publications (1)

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US3748763A true US3748763A (en) 1973-07-31

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ID=4342783

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Application Number Title Priority Date Filing Date
US00150572A Expired - Lifetime US3748763A (en) 1970-06-09 1971-06-07 Bucket tooth construction for the buckets of construction equipment

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US (1) US3748763A (de)
CH (1) CH527977A (de)
DE (1) DE7027299U (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103442A (en) * 1976-04-12 1978-08-01 Zepf Hans Rudolf Adjustable shovel tooth cap holder
US4136469A (en) * 1975-02-21 1979-01-30 Zepf Hans Rudolf Shovel tooth
EP0015890A1 (de) * 1979-02-02 1980-09-17 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Schneidkopf für Saugbagger
US5778570A (en) * 1993-08-30 1998-07-14 Baz Service Ag Excavator tooth
US6070345A (en) * 1997-03-18 2000-06-06 Mitsubishi Steel Mfg. Co., Ltd. Bucket tool for a power shovel
US20080000113A1 (en) * 2006-06-21 2008-01-03 Hensley Industries, Inc. Connection of flush mounted adapter to ground engaging bucket lip
US20250250781A1 (en) * 2024-02-02 2025-08-07 Caterpillar Inc. Wear member having double scoop-rib
US20250250782A1 (en) * 2024-02-02 2025-08-07 Caterpillar Inc. Wear member having curved wall scratching tip portion

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US309553A (en) * 1884-12-23 manning-
US673423A (en) * 1900-10-25 1901-05-07 Andrew M Cupples Tooth for excavator-buckets.
US1107253A (en) * 1913-11-12 1914-08-18 Edgar Allen American Manganese Steel Company Dipper-tooth.
US1188480A (en) * 1914-06-26 1916-06-27 American Manganese Steel Co Tooth for dippers of excavating-machines.
US1217500A (en) * 1915-05-26 1917-02-27 John J Rehally Digging-bucket.
US1395048A (en) * 1920-02-18 1921-10-25 American Manganese Steel Co Dipper-tooth
US1815820A (en) * 1928-11-30 1931-07-21 Pettibone Mulliken Company Dipper tooth
US2092311A (en) * 1934-10-17 1937-09-07 H And L Corp Detachable tooth and attachment for earth digging implements
US2145663A (en) * 1936-09-28 1939-01-31 Nazro H Reynolds Attachment means for digging teeth and excavating buckets and the like
US2483032A (en) * 1945-06-06 1949-09-27 Electric Steel Foundry Excavating tooth
US2846790A (en) * 1955-01-13 1958-08-12 Electric Steel Foundry Co Tooth assembly
US3079710A (en) * 1961-06-22 1963-03-05 Esco Corp Ground-working tooth and method
US3426459A (en) * 1965-10-22 1969-02-11 Gerald A Petersen Tooth and holder for bucket
US3453755A (en) * 1967-06-05 1969-07-08 Portec Inc Dipper tooth for excavating shovel with key means free of shearing and bending stress
US3650053A (en) * 1969-05-07 1972-03-21 Bucyrus Erie Co Roller lock for digging tooth assembly

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US309553A (en) * 1884-12-23 manning-
US673423A (en) * 1900-10-25 1901-05-07 Andrew M Cupples Tooth for excavator-buckets.
US1107253A (en) * 1913-11-12 1914-08-18 Edgar Allen American Manganese Steel Company Dipper-tooth.
US1188480A (en) * 1914-06-26 1916-06-27 American Manganese Steel Co Tooth for dippers of excavating-machines.
US1217500A (en) * 1915-05-26 1917-02-27 John J Rehally Digging-bucket.
US1395048A (en) * 1920-02-18 1921-10-25 American Manganese Steel Co Dipper-tooth
US1815820A (en) * 1928-11-30 1931-07-21 Pettibone Mulliken Company Dipper tooth
US2092311A (en) * 1934-10-17 1937-09-07 H And L Corp Detachable tooth and attachment for earth digging implements
US2145663A (en) * 1936-09-28 1939-01-31 Nazro H Reynolds Attachment means for digging teeth and excavating buckets and the like
US2483032A (en) * 1945-06-06 1949-09-27 Electric Steel Foundry Excavating tooth
US2846790A (en) * 1955-01-13 1958-08-12 Electric Steel Foundry Co Tooth assembly
US3079710A (en) * 1961-06-22 1963-03-05 Esco Corp Ground-working tooth and method
US3426459A (en) * 1965-10-22 1969-02-11 Gerald A Petersen Tooth and holder for bucket
US3453755A (en) * 1967-06-05 1969-07-08 Portec Inc Dipper tooth for excavating shovel with key means free of shearing and bending stress
US3650053A (en) * 1969-05-07 1972-03-21 Bucyrus Erie Co Roller lock for digging tooth assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136469A (en) * 1975-02-21 1979-01-30 Zepf Hans Rudolf Shovel tooth
US4103442A (en) * 1976-04-12 1978-08-01 Zepf Hans Rudolf Adjustable shovel tooth cap holder
EP0015890A1 (de) * 1979-02-02 1980-09-17 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Schneidkopf für Saugbagger
US5778570A (en) * 1993-08-30 1998-07-14 Baz Service Ag Excavator tooth
US6070345A (en) * 1997-03-18 2000-06-06 Mitsubishi Steel Mfg. Co., Ltd. Bucket tool for a power shovel
US20080000113A1 (en) * 2006-06-21 2008-01-03 Hensley Industries, Inc. Connection of flush mounted adapter to ground engaging bucket lip
WO2007149700A3 (en) * 2006-06-21 2008-08-07 Hensley Ind Inc Connection of flush mounted adapter to ground engaging bucket lip
US20250250781A1 (en) * 2024-02-02 2025-08-07 Caterpillar Inc. Wear member having double scoop-rib
US20250250782A1 (en) * 2024-02-02 2025-08-07 Caterpillar Inc. Wear member having curved wall scratching tip portion

Also Published As

Publication number Publication date
DE7027299U (de) 1970-10-08
CH527977A (de) 1972-09-15

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