US3685178A - Dipper teeth - Google Patents
Dipper teeth Download PDFInfo
- Publication number
- US3685178A US3685178A US53854A US3685178DA US3685178A US 3685178 A US3685178 A US 3685178A US 53854 A US53854 A US 53854A US 3685178D A US3685178D A US 3685178DA US 3685178 A US3685178 A US 3685178A
- Authority
- US
- United States
- Prior art keywords
- key
- way
- protuberances
- openings
- adapter
- 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
Links
Images
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
- E02F9/2841—Retaining means, e.g. pins resilient
Definitions
- a dipper tooth comprising a replaceable point part 51 1111.01. ..E02r 9/28 with pp walls is mounted on the complementary [58] Field of Search ..37/142 R, 142 A; 85/83; nose Portion f an adapter part, the two p having 2 7 53 R, 53 H, 53 LK, 3 R openings in registry defining a key-way to receive a retainer key holding the two parts together.
- the 5 References Cited retainer key is of a length to span the key-way, and is characterized by two parallel rigid sections separated UNITED STATES PATENTS by a layer of resilientmaterial. One of the rigid sections is the back and the other the front of the key. fizz :1 ⁇ ?
- This invention relates to a so-called dipper tooth used on diggers, buckets, trenchers and the like as an earth-working member, and characterized by a replaceable point detachably mounted on an adapter.
- dipper teeth It is customary in the construction of dipper teeth to utilize two principal parts, namely, a point or cap and an adapter on which the point is detachably fitted.
- the adapter is mounted on the lip of the bucket, shovel or other principal supporting member of the earth-moving equipment.
- the most common way of holding the point on the adapter is by way of a pin or key inserted in a keyway extending through the assembled parts.
- the parts are quite heavy and large, and a significant amount of force isrequired to drive the key home or displace it, especially since one function of the key, in many dipper tooth constructions, is to draw the point tightly up on the adapter which is the present case.
- FIG. 1 is a fragmentary sectional view of a dipper tooth constructed in accordance with the present invention
- FIG. 2 is a side elevation of the retainer key
- FIG. 3 is a sectional view on the line 3-3 of FIG. 2.
- the dipper tooth 10, FIG. 1 in many respects is of standard construction in that it is characterized by a digging point 12 supported on an adapter 14, the latter in turn normally being supported at the front edge of a bucket, scraper or the like.
- the point 12 is defined by opposed upper and lower walls 15 and 16 which are convergent in a forward direction, defining a forward digging point or edge 17 which bears the brunt of the work.
- the walls 15 and 16 are spaced from one another to define a mounting socket 18 of truncated pyramidal shape, and the adapter 14 has a forwardly projecting nose portion 20 which fits complementally the socket 18 while allowing for a slight separation S1 between the forward wall of the nose and the opposed interior surface of the point, permitting the parts to wear in as will be further explained below.
- the opposed upper and lower surfaces of the adapter nose have the same degree of slope as the interior surfaces 21 and 22 of the walls 15 and 16 of the point 12.
- the portion of the adapter nose rearward of the upper and lower inclined surfaces 21 and 22 is flattened at 23 and 24, and the ends of an opening 25, extending through the adapter nose, open at such flat walls 23 and 24.
- the walls of the point 15 and 16 extend rearward to overlie the flat surfaces 23 and 24, but are spaced therefrom for a purpose to be explained, and openings 26 and 27 are formed therein, the arrangement being such that when the point 12 is fitted complementally to the adapter nose, the openings 25, 26 and 27 are in registry to define a key-way which receives a retainer key 30 serving to hold the parts 12 and 14 together.
- the key is characterized by a pair of parallel rigid metal plates or elements 31 and 32, FIG. 2, part 31 being the more massive and representing the back of the key.
- Part 32 of the key is of spring steel and represents the front of the key, the back 31 and front 32 being separated by a layer of resilient'material 34, preferably rubber, vulcanized to the opposed surfaces of the front and back of the key to afford a unitary key.
- the sheet of spring steel constituting the front of the key is formed with a pair of forwardly projecting protuberances 36 and 37, and the layer of rubber immediately there behind is recessed or apertured, 36A and 37A, to reduce the spring rate of the layer of rubber at these two areas.
- the key 30 is of a length to generously span the key-way.
- the ends of the key repose in the openings 26 and 27 of the dipper tooth point-and the intermediate portion thereof reposes in the opening 25 of the adapter.
- the layer of rubber is under compression, and the rear surfaces of the key at the ends thereof bear with great force against the opposed surfaces 38 and 39 of the point which bound or mark the rear limit of the openings 26 and 27.
- the key when the key is driven home, it also serves to draw the point up tightly on the adapter while allowing sufficient separation at S1 to allow for normal wear between the inside surfaces of the point and the opposing surfaces 21 and 22 of the adapter.
- the protuberances 36 and 37 are related to recesses presented by the key-way.
- the recesses are at the ends of the key-way opening 25 in the adapter, such being achieved by appropriately spacing the opposing surfaces of the point, which is to say that the forward walls 26A and 27A of the key-way openings 26 and 27 are offset longitudinally as by being spaced forwardly of the ends of the opening 25, and the interior surfaces 21 and 22 of the upper and lower walls of the point are amply spaced vertically from the opposing surfaces 23 and 24 of the adapter thereby affording sockets or pockets into which the protuberances 36 and 37 may expand.
- a dipper tooth comprising a replaceable point part with opposed walls mounted on a nose portion of an adapter part, the two parts having openings in registry defining a key-way to receive a retainer key holding the two parts together: a retainer key of a length to span the key-way, said key being characterized by a rigid member of given thickness and a thinner strip member of spring steel, said members being separated by a layer of resilient material, one of the members being the back and the other the front of the key, said strip member of the key having protuberances thereon normally fitting in corresponding sockets presented by the key-way, and in which the layer of resilient material behind the protuberances is of less spring rate than the remainder.
- a dipper tooth assembly comprising a replaceable point part with opposed walls mounted on a nose portion of an adapter part to extend longitudinally thereof, the two parts having transverse openings in registry defining a key-way to receive a retainer key holding the two parts together, a retainer key of a length to span the key-way, said key being characterized by a rigid member of given thickness and a thinner strip member of spring steel, said members being separated by a layer of resilient material, one of said members being the back and the other the front of the key, said strip member of the key having protuberances thereon normally fitting in corresponding sockets presented by the key-way, said openings defining the key-way including an opening in the adapter nose extending therethrough and a pair of aligned openings in the opposed walls of the point extending therethrough, said sockets being presented by virtue of the walls of the point having he openings being spaced longitudinally of the ends of the opening in the adapter and further by the interior surfaces of the point adjacent the openings therein being spaced vertical
- a key according to claim 1 wherein the key is flat on the side opposite the protuberances.
Landscapes
- 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)
Abstract
Description
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5385470A | 1970-07-10 | 1970-07-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3685178A true US3685178A (en) | 1972-08-22 |
Family
ID=21986997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US53854A Expired - Lifetime US3685178A (en) | 1970-07-10 | 1970-07-10 | Dipper teeth |
Country Status (5)
Country | Link |
---|---|
US (1) | US3685178A (en) |
JP (1) | JPS5123801B1 (en) |
CA (1) | CA943996A (en) |
FR (1) | FR2097810A5 (en) |
ZA (1) | ZA712984B (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3894349A (en) * | 1972-10-31 | 1975-07-15 | Poclain Sa | Detachable tooth for public works machine having a particular cotter |
US4192089A (en) * | 1977-03-25 | 1980-03-11 | O & K Orenstein & Koppel Aktiengesellschaft | Retainer for releasably securing a tooth tip of a digger tooth |
US4446638A (en) * | 1982-12-27 | 1984-05-08 | Abex Corporation | Dipper tip retaining pin |
US4481728A (en) * | 1981-12-01 | 1984-11-13 | Abex Corporation | Dipper tooth tip and adapter |
US4770587A (en) * | 1984-02-08 | 1988-09-13 | Gunnar Liljedahl | Locking pin |
US4823487A (en) * | 1987-07-30 | 1989-04-25 | Gh Hensley Industries, Inc. | Resilient flex pin apparatus for excavating tooth point and adapter assemblies |
US20020006318A1 (en) * | 1998-12-02 | 2002-01-17 | Jorge Pallas Moreno | Lock and retention elements destined for public works and similar machines |
US6477796B1 (en) * | 2000-07-06 | 2002-11-12 | Caterpillar Inc | Tooth assembly for implements |
US20070084094A1 (en) * | 2005-10-14 | 2007-04-19 | Amsco Cast Products (Canada) Inc. | Tooth and adaptor assembly for a dipper bucket |
US20090044435A1 (en) * | 2007-08-14 | 2009-02-19 | Amsco Cast Products (Canada) Inc. | Retainer Pin and Tooth for Tooth and Adaptor Assembly |
US20210017740A1 (en) * | 2019-07-17 | 2021-01-21 | Sungbo Industrial Co., Ltd. | Damper structure |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5434412U (en) * | 1977-08-12 | 1979-03-06 |
-
1970
- 1970-07-10 US US53854A patent/US3685178A/en not_active Expired - Lifetime
-
1971
- 1971-04-30 CA CA111,855A patent/CA943996A/en not_active Expired
- 1971-05-07 ZA ZA712984A patent/ZA712984B/en unknown
- 1971-05-19 JP JP46033942A patent/JPS5123801B1/ja active Pending
- 1971-05-27 FR FR7119298A patent/FR2097810A5/fr not_active Expired
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3894349A (en) * | 1972-10-31 | 1975-07-15 | Poclain Sa | Detachable tooth for public works machine having a particular cotter |
US4192089A (en) * | 1977-03-25 | 1980-03-11 | O & K Orenstein & Koppel Aktiengesellschaft | Retainer for releasably securing a tooth tip of a digger tooth |
US4481728A (en) * | 1981-12-01 | 1984-11-13 | Abex Corporation | Dipper tooth tip and adapter |
US4446638A (en) * | 1982-12-27 | 1984-05-08 | Abex Corporation | Dipper tip retaining pin |
US4770587A (en) * | 1984-02-08 | 1988-09-13 | Gunnar Liljedahl | Locking pin |
US4823487A (en) * | 1987-07-30 | 1989-04-25 | Gh Hensley Industries, Inc. | Resilient flex pin apparatus for excavating tooth point and adapter assemblies |
US20020006318A1 (en) * | 1998-12-02 | 2002-01-17 | Jorge Pallas Moreno | Lock and retention elements destined for public works and similar machines |
US6735891B2 (en) * | 1998-12-02 | 2004-05-18 | Metalogenia, S.A. | Lock and retention elements destined for public works and similar machines |
US6477796B1 (en) * | 2000-07-06 | 2002-11-12 | Caterpillar Inc | Tooth assembly for implements |
US20070084094A1 (en) * | 2005-10-14 | 2007-04-19 | Amsco Cast Products (Canada) Inc. | Tooth and adaptor assembly for a dipper bucket |
US20090044435A1 (en) * | 2007-08-14 | 2009-02-19 | Amsco Cast Products (Canada) Inc. | Retainer Pin and Tooth for Tooth and Adaptor Assembly |
US7658025B2 (en) | 2007-08-14 | 2010-02-09 | Amsco Cast Products (Canada) Inc. | Retainer pin and tooth for tooth and adaptor assembly |
US20210017740A1 (en) * | 2019-07-17 | 2021-01-21 | Sungbo Industrial Co., Ltd. | Damper structure |
US11697924B2 (en) * | 2019-07-17 | 2023-07-11 | Sungbo Industrial Co., Ltd. | Damper structure |
Also Published As
Publication number | Publication date |
---|---|
FR2097810A5 (en) | 1972-03-03 |
ZA712984B (en) | 1972-10-25 |
CA943996A (en) | 1974-03-19 |
JPS5123801B1 (en) | 1976-07-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CHEMICAL BANK, NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:AMALLOY CORP., A N.J. CORP.;REEL/FRAME:004893/0288 Effective date: 19880311 Owner name: CHEMICAL BANK, A NEW YORK BANKING CORP.,NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:AMALLOY CORP., A N.J. CORP.;REEL/FRAME:004893/0288 Effective date: 19880311 Owner name: CHEMICAL BANK, 110 EAST 59TH STREET, NEW YORK, NEW Free format text: SECURITY INTEREST;ASSIGNOR:AMALLOY CORP., A N.J. CORP.;REEL/FRAME:004893/0288 Effective date: 19880311 Owner name: CHEMICAL BANK, A CORP. OF NY Free format text: SECURITY INTEREST;ASSIGNOR:AMALLOY CORPORATION;REEL/FRAME:004854/0891 Effective date: 19880311 |
|
AS | Assignment |
Owner name: AMALLOY CORP., A CORP. OF NJ Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ABEX CORPORATION;REEL/FRAME:004890/0859 Effective date: 19880310 |