US2204718A - Replaceable point excavating tooth - Google Patents

Replaceable point excavating tooth Download PDF

Info

Publication number
US2204718A
US2204718A US153032A US15303237A US2204718A US 2204718 A US2204718 A US 2204718A US 153032 A US153032 A US 153032A US 15303237 A US15303237 A US 15303237A US 2204718 A US2204718 A US 2204718A
Authority
US
United States
Prior art keywords
bit
tooth
fingers
base portion
cutting
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
US153032A
Inventor
Lewis E Younie
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.)
Electric Steel Foundry Co
Original Assignee
Electric Steel Foundry 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 Electric Steel Foundry Co filed Critical Electric Steel Foundry Co
Priority to US153032A priority Critical patent/US2204718A/en
Application granted granted Critical
Publication of US2204718A publication Critical patent/US2204718A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808Teeth
    • E02F9/2816Mountings therefor
    • E02F9/2833Retaining means, e.g. pins

Definitions

  • This invention relates to replaceable point excavating teeth as used on the forward cutting edges of power shovels and drag line buckets.
  • a tooth as made according to the present invention is particularly well adapted for use under the latter conditions, since itis provided with a cutting bit that may be readily drop forged in relatively simpledies and which lends itself well to heat treatment. Also, because of its small size, there is very little wastage in this cutting bit and not much metal is required for its fabrication.
  • a further object is to provide a means for securing the excavating tooth body and point together so that the assembly is strong and rigid.
  • a further object is to provide an excavating tooth assembly in which the replaceable cutting point is relatively small and may be discarded when worn without much waste of metal.
  • a further object is to provide an excavating tooth assembly in which the replaceable cutting point is formed in a section that lends itself well to heat treatment.
  • Fig. 1 is a perspective view of a dipper front embodying this invention
  • Fig. 2 is an exploded perspective view ofone of the dipper teeth
  • Fig. 3 is a rear elevation of the dipper tooth body casting
  • Fig. 4 is a bottom elevation of an assembled dipper tooth
  • Figs. 5 and 6 are longitudinal sectional views through the tooth taken in the direction of the arrows along the lines 55 and 6-6 of Fig. 1
  • Figs. 7 and 8 are transverse sectional views taken in the direction of the arrows along the lines 'l-.'I of Fig. 6 and 8-8 of Fig. 5, respectively;
  • Fig. 9 is a plan view of a modified cutting bit; and 1 I Fig. 10 is a side elevation of the modified cutting bit shown in Fig. 9;
  • Figs. 11 and 12 are longitudinal sectional views similar to Figs. 5 and 6, excepting/ that Figs. 11 and 12 illustrate a further modified tooth;
  • Fig. 13. is a plan view of the modified cutting bit shown in Figs. 11 and 12;
  • Fig. 14 is a side elevation of the cutting bit shown in Fig. 13;
  • Figs. 15 and 16 are transverse sectional views 10 taken in the direction of the arrows along the lines I5 and I6 of Figs. 11 and 12 respectively.
  • a dipper front I0 is provided with a plurality of sockets I2, in this instance four, in which are secured tangs I4 extending from the rearward side of dipper teeth I6. These tangs I4 are secured in position within the sockets I2 by means 0 of tapered keys I8 which are driven intoregistering tapered slots 20 and 22 positioned transversely of the sockets I2 and tangs I4, respectively.
  • the teeth I6 are alike and interchangeable and, therefore, a description of only one will suflice.
  • the tooth I6 consists of a base casting 24 which is roughly triangular in longitudinal vertical section and has its top forward face formed to provide two backwardly extending grooves 26 and 28 with a tongue 30 between them.
  • the lower surfaces of the two grooves 26 and 28 form a platform 29 that supports a removable cutting bit -32, while the upper portions of the grooves .26 and 28 have inwardly extending flanges 34, 36, 38 and 40, which narrow the grooves at this point and secure the bit 32 against upward movement relative thereto.
  • bit shown in Figs. 5, 6 and 10 comprises a flat lower surface 42 and an upper sur- 45 face 44 that extends upwardly from the lower surface at the forward cutting edge backwardly at a sharp angle to a plane surface 48 which is parallel with the lower surface 42.
  • This particular form of the bit 32 lends itself to fast operation 50 in earth that may be worked comparatively easily.
  • the bit will also wear at the heel of the face 44.
  • the other form of the bit, 32', illustrated in Figs. 11 to 16, is one that works to advantage under heavy or particularly rough working conditions.
  • This embodiment of the invention has the upper front surface 44' extending at a continuous angle from the lower surface 42 until very close to the heel of the bit 32' after which I it follows a convex curved contour 43 terminating as at 45, where the curved configuration is continued in the body structure of the base casting 24, as at 41.
  • I'his provides a particularly heavy and protective thickness of metal where it is worn away the most by heavy abrasive work and where it will assist the work of the bit 32' to the best advantage, so as to prolong the life of the bit against such wear and work conditions as would have weakened the bit to a breaking point long before its period of usefulness was over.
  • the bits are provided with two fingers 50 and 52 or. 50' and 52' respectively which are formed to slide into and be engaged by the walls of the grooves 26 and 28.
  • the rearward portions of the two fingers are provided with transverse notches 54 and 56 or 54' and 56' respectively in their upper surfaces.
  • the fingers 50 and 52 or 50 and 52' are slid into the grooves 26 and 28, the notches '54 and 56 or 54 and 56' are aligned with a slot 58 extending transversely through the casting 24.
  • the cutting edge of the bit extends below the bottom edge of the base portion of the tooth and protects the lower surface of the casting 24 against excessive abrasion.
  • bucket in the claims is used in its broad sense and is generic as to buckets, dippers and shovels used on various types of power excavating machines.
  • a composite excavating tooth having a base portion for detachable mounting in a bucket socket, upwardly inclined openings in said base portion, a cutting bit having a plane lower surface and a portion of its upper surface inclined thereto, rearwardly extending fingers on said bit to fit said upwardly inclined openings, 9. flat shelf on the base portion projecting ahead of said openings to support the lower surface of said bit, and means to detachably secure said fingers in said openings.
  • a composite tooth of the type described having a base portion for detachable mounting in a bucket cutting edge, upwardly and rearwardwardly extending slots open at the top in said base portion, a cutting bit having fingers to fit said slots, interlocking means to prevent upward movement of the bit relative to said base portion,
  • a composite tooth of the type described having a base portion for detachable mounting in a bucket cutting edge, upwardly inclined openings in said base portion, a cutting bit having a plane lower surface and the front portion of its upper surface inclined thereto, rearwardly extending fingers on said bit to fit said upwardly inclined openings, the lower surface of the fingers being in the same plane as the lower surface of the bit, and means to detachably secure said fingers in said openings with the forward edge of'the bit projecting below the bottom surface of the base portion.
  • a composite excavating tooth having a base portion for detachable mounting in a bucket socket, rearwardly extending openings in said base portion, a cutting bit having fingers to fit said openings, the lower portion of the base portion projecting forwardly of said openings to provide a flat shelf underlying said bit and means to detachably secure said fingers in said openings.
  • a composite excavating tooth having a wedge shaped base portion, an upwardly inclined slot open at the top in said base portion, said slot being larger at the bottom than at the top and tapering inwardly toward its inner end, a relatively thin cutting bit having a rearwardly extending tapered finger to fit said slot, the lower portion of said finger being wider than its upper portion, means to support said bit against downward fiexure, said means comprising a downwardly and forwardly inclined shelf on said base portion projecting ahead of said inclined slot, and means to secure the bit rigidly to said base portion.
  • a composite excavating tooth comprising a base portion for detachable mounting in a bucket cutting edge, upwardly inclined openings in said base portion, a cutting bit, rearwardly extending fingers on said bit to. fit said upwardly inclined openings, and means for detachably securing said fingers in said openings said bit having a plane lower surface and its upper surface inclined thereto over its front portion and convex over its rear portion with a slot extending transversely across the top of the convex portion.
  • a relatively thin excavating tooth having a plane lower surface and the front portion of its upper surface inclined thereto, rearwardly extending fingers on said tooth, the lower portion of said fingers being wider than the upper por- 2,204,718 tion, and the rear portionof said fingers being I provided with transverse notches in their upper surfaces.
  • a composite excavating tooth having a baseportion with a groove therein, a shelf projecting ahead of said groove said groove being tapered from front to back, a removable cutting bit overlying said shelf and supported thereby and having a tapered tongue to'fit said groove, the lower surface of said tongue being in the same plane as the lower surface of the cutting portion of the bit, and means to removably secure the bit and base portion together.
  • An excavating tooth comprising, a tooth base having an opening in its upper surface, said opening being tapered from front to back, and a portion of said opening being wider than the top thereof, a removable cutting bit having a tongue to fit said opening and limit the inward and upward movement of said bit relative to said tooth base, a flat shelf on said base projecting ahead of said opening and underlying said bit, the contiguous surfaces of the bit and tooth base limiting the downward movement of said bit, and means to removably secure the bit to said tooth base.
  • a composite excavating tooth having a detachable base portion for mounting in a bucket socket, said base portion being provided with openings, a thin flat cutting bit having fingers substantially in the plane of the bit to fit said openings, a shelf on said base portion projecting V ahead of the openings therein to support said bit, and means detachably to secure said fingers in said openings.
  • A, composite tooth of the class described having a detachable base portion for mounting in a bucket cutting edge and provided with slots open at the top, a cutting bit having fingers to fit said slots, interlocking means to prevent up-j ward movement of the bit relative to the base portion, a shelf projecting ahead of said slots and underlying said bit to support the same against downward fiexure, and means detachably to se-i,
  • An excavating tooth bit comprising a metal member, having a body provided with a relatively sharp edge formed by the juncture of an upper downwardly beveled wearing surface and a lower bearing surface, the said body having a medial portion of substantially uniform thickness adapted to be used up as the beveled wearing surface is worn back, whereby the beveled wearing surface may be maintained of substantially the same characteristics as the tooth is worn back, said bit having a pair of rearwardly extending separated fingers the bases of which are located in substantially the same plane, which plane passes through the sharp edge of said bit, said fingers being provided with an enlarged transverse pin engaging surface.
  • An excavating tooth bit comprising a metal member having a body provided with a relatively sharp edge formed by the juncture of an upper downwardly beveled wearing surface and a lower bearing surface, the said body having a medial portion of substantially uniform thickness adapted to be used up as the beveled wearing surface is worn back, whereby the beveled wearing surface may be maintained of'substantially the same characteristics as the tooth is worn back, said bit having a pair of rearwardly extending separatedfingers, said fingers being provided with a transverse pin engaging surface, said lower bearing surface and the lower surface of said fingers being in substantially the same plane which passes through the sharp edge of said bit, and said fingers tapering towards their ends and de-* creasing in lateral dimension away from said latter plane.

Description

June 18, 1940. YOUNlE 2,204,718
|. ZldwEl amw it i June 18, 1940.,
E. YOUNIE 'RzrLAcEABLEf POINT EXCAVATING room Filed July 10, 19:57 3 Sheets-Sheet 2 June 18, 194-0. L. E. YOUNIE REPLACEABLE POINTEXQAVATING room Filed July 10, 1937 5 Sheets-Sheet 3 enema June 18, 1940 PATENT OFFICE RFQPLACEABLE POINT Lewis E. Younie,
Electric Steel reg., a corporation 0 EXCAVATING 'roo'rn Portland, 0reg., assignor to Foundry Company, Portland,
1' Oregon Application July 10, 1937, Serial No. 153,032
13 Claims.
This invention relates to replaceable point excavating teeth as used on the forward cutting edges of power shovels and drag line buckets.
Ordinarily these teeth are made of manganese steel castings, since this metal has great shock and fatigue resisting characteristics. However;
heat treated alloy forgings of chrome nickel steel have better wear resisting properties and are to be preferred when operating in very abrasive soil, such as gravel. A tooth as made according to the present invention is particularly well adapted for use under the latter conditions, since itis provided with a cutting bit that may be readily drop forged in relatively simpledies and which lends itself well to heat treatment. Also, because of its small size, there is very little wastage in this cutting bit and not much metal is required for its fabrication.
It is an object of this invention to provide a detachable excavating tooth having a cutting point or bit which may be drop forged in relatively simple dies. I
A further object is to provide a means for securing the excavating tooth body and point together so that the assembly is strong and rigid.
A further object is to provide an excavating tooth assembly in which the replaceable cutting point is relatively small and may be discarded when worn without much waste of metal.
A further object is to provide an excavating tooth assembly in which the replaceable cutting point is formed in a section that lends itself well to heat treatment.
Other objects and advantages will become apparent from the following description and from. the accompanying drawings in which:
Fig. 1 is a perspective view of a dipper front embodying this invention;
Fig. 2 is an exploded perspective view ofone of the dipper teeth;
Fig. 3 is a rear elevation of the dipper tooth body casting;
Fig. 4 is a bottom elevation of an assembled dipper tooth;
Figs. 5 and 6 are longitudinal sectional views through the tooth taken in the direction of the arrows along the lines 55 and 6-6 of Fig. 1
. respectively;
Figs. 7 and 8 are transverse sectional views taken in the direction of the arrows along the lines 'l-.'I of Fig. 6 and 8-8 of Fig. 5, respectively;
Fig. 9 is a plan view of a modified cutting bit; and 1 I Fig. 10 is a side elevation of the modified cutting bit shown in Fig. 9;
Figs. 11 and 12 are longitudinal sectional views similar to Figs. 5 and 6, excepting/ that Figs. 11 and 12 illustrate a further modified tooth;
Fig. 13.is a plan view of the modified cutting bit shown in Figs. 11 and 12;
Fig. 14 is a side elevation of the cutting bit shown in Fig. 13;
Figs. 15 and 16 are transverse sectional views 10 taken in the direction of the arrows along the lines I5 and I6 of Figs. 11 and 12 respectively.
Referring to the drawings in which like parts are designated" by like numerals throughout the same: 15
A dipper front I0 is provided with a plurality of sockets I2, in this instance four, in which are secured tangs I4 extending from the rearward side of dipper teeth I6. These tangs I4 are secured in position within the sockets I2 by means 0 of tapered keys I8 which are driven intoregistering tapered slots 20 and 22 positioned transversely of the sockets I2 and tangs I4, respectively.
The above connection between the dipper front 5 I0 and the tooth I6 which now is old in the art and forms no part of this invention is given for clearness of understanding only.
The teeth I6 are alike and interchangeable and, therefore, a description of only one will suflice.
The tooth I6 consists of a base casting 24 which is roughly triangular in longitudinal vertical section and has its top forward face formed to provide two backwardly extending grooves 26 and 28 with a tongue 30 between them. The lower surfaces of the two grooves 26 and 28 form a platform 29 that supports a removable cutting bit -32, while the upper portions of the grooves .26 and 28 have inwardly extending flanges 34, 36, 38 and 40, which narrow the grooves at this point and secure the bit 32 against upward movement relative thereto.
The form of bit shown in Figs. 5, 6 and 10 comprises a flat lower surface 42 and an upper sur- 45 face 44 that extends upwardly from the lower surface at the forward cutting edge backwardly at a sharp angle to a plane surface 48 which is parallel with the lower surface 42. This particular form of the bit 32 lends itself to fast operation 50 in earth that may be worked comparatively easily. In addition to this, as the cutting edge 46 recedes under wear, the bit will also wear at the heel of the face 44. This operates to maintain a reasonably sharp bit throughout its life with littie, if any, attention, since the face 44, which recedes under wear, moves into a portion of the bit under face 48, which has a uniform thickness, whereby the cutting angularity between the faces 44 and 42 is maintained substantially constant throughout the life of the bit.
The other form of the bit, 32', illustrated in Figs. 11 to 16, is one that works to advantage under heavy or particularly rough working conditions. This embodiment of the invention has the upper front surface 44' extending at a continuous angle from the lower surface 42 until very close to the heel of the bit 32' after which I it follows a convex curved contour 43 terminating as at 45, where the curved configuration is continued in the body structure of the base casting 24, as at 41. I'his provides a particularly heavy and protective thickness of metal where it is worn away the most by heavy abrasive work and where it will assist the work of the bit 32' to the best advantage, so as to prolong the life of the bit against such wear and work conditions as would have weakened the bit to a breaking point long before its period of usefulness was over.
Extending-rearwardly from the surface 48 in the bit 32, and beginning at the curved contour 43 in the bit 32', the bits are provided with two fingers 50 and 52 or. 50' and 52' respectively which are formed to slide into and be engaged by the walls of the grooves 26 and 28.
The rearward portions of the two fingers are provided with transverse notches 54 and 56 or 54' and 56' respectively in their upper surfaces. When the fingers 50 and 52 or 50 and 52' are slid into the grooves 26 and 28, the notches '54 and 56 or 54 and 56' are aligned with a slot 58 extending transversely through the casting 24.
In this position the bit is rigidly secured to the base 24 by means of a tapered key 60 that is driven into the slot 58 and through the above described notches.
In the assembled position the cutting edge of the bit extends below the bottom edge of the base portion of the tooth and protects the lower surface of the casting 24 against excessive abrasion.
Under some circumstances it may be found that the notches 54 and 5B or 54 and 56' will weaken the fingers to an unsafe point. Under these conditions I prefer to weld metal strips 62 and 64 across the top of the notches as shown in Figs.
9, 10, 13 and 14 thus strengthening the cutting bit at this point and providing a slot 66 66 instead of the open notches for the passage of the key 60,
From the above description it will be seen that I provide a replaceable point dipper tooth that is very strong and rigid and in which the replaceable point or bit is comparatively small and may be forged from very simple dies. This is especially true, since the lower surface of the bit is flat, thereby necessitating the engraving of only the drop forging die from which the upper surface of the bit is formed.
The word bucket" in the claims is used in its broad sense and is generic as to buckets, dippers and shovels used on various types of power excavating machines.
While I haveshown a specific embodiment, it is to be understood that this invention may assume various forms, for instance more or less than two fingers 50 and 52 and grooves 26 and 28 may be used depending upon the size of the tooth, and that the scope of my invention is to be limited only by the following claims.
I claim:
1. A composite excavating tooth, having a base portion for detachable mounting in a bucket socket, upwardly inclined openings in said base portion, a cutting bit having a plane lower surface and a portion of its upper surface inclined thereto, rearwardly extending fingers on said bit to fit said upwardly inclined openings, 9. flat shelf on the base portion projecting ahead of said openings to support the lower surface of said bit, and means to detachably secure said fingers in said openings.
2. A composite tooth of the type described, having a base portion for detachable mounting in a bucket cutting edge, upwardly and rearwardwardly extending slots open at the top in said base portion, a cutting bit having fingers to fit said slots, interlocking means to prevent upward movement of the bit relative to said base portion,
a downwardly and forwardly inclined shelf projecting ahead of said slots and underlying said bit to support said bit against downward flexure, and means to detachably secure the bit against outward movement relative to said base portion.
3. A composite tooth of the type described, having a base portion for detachable mounting in a bucket cutting edge, upwardly inclined openings in said base portion, a cutting bit having a plane lower surface and the front portion of its upper surface inclined thereto, rearwardly extending fingers on said bit to fit said upwardly inclined openings, the lower surface of the fingers being in the same plane as the lower surface of the bit, and means to detachably secure said fingers in said openings with the forward edge of'the bit projecting below the bottom surface of the base portion.
4. A composite excavating tooth, having a base portion for detachable mounting in a bucket socket, rearwardly extending openings in said base portion, a cutting bit having fingers to fit said openings, the lower portion of the base portion projecting forwardly of said openings to provide a flat shelf underlying said bit and means to detachably secure said fingers in said openings.
5. A composite excavating tooth, having a wedge shaped base portion, an upwardly inclined slot open at the top in said base portion, said slot being larger at the bottom than at the top and tapering inwardly toward its inner end, a relatively thin cutting bit having a rearwardly extending tapered finger to fit said slot, the lower portion of said finger being wider than its upper portion, means to support said bit against downward fiexure, said means comprising a downwardly and forwardly inclined shelf on said base portion projecting ahead of said inclined slot, and means to secure the bit rigidly to said base portion.
6. A composite excavating tooth comprising a base portion for detachable mounting in a bucket cutting edge, upwardly inclined openings in said base portion, a cutting bit, rearwardly extending fingers on said bit to. fit said upwardly inclined openings, and means for detachably securing said fingers in said openings said bit having a plane lower surface and its upper surface inclined thereto over its front portion and convex over its rear portion with a slot extending transversely across the top of the convex portion.
'7. A relatively thin excavating tooth having a plane lower surface and the front portion of its upper surface inclined thereto, rearwardly extending fingers on said tooth, the lower portion of said fingers being wider than the upper por- 2,204,718 tion, and the rear portionof said fingers being I provided with transverse notches in their upper surfaces.
8. A composite excavating tooth, having a baseportion with a groove therein, a shelf projecting ahead of said groove said groove being tapered from front to back, a removable cutting bit overlying said shelf and supported thereby and having a tapered tongue to'fit said groove, the lower surface of said tongue being in the same plane as the lower surface of the cutting portion of the bit, and means to removably secure the bit and base portion together.
9. An excavating tooth comprising, a tooth base having an opening in its upper surface, said opening being tapered from front to back, and a portion of said opening being wider than the top thereof, a removable cutting bit having a tongue to fit said opening and limit the inward and upward movement of said bit relative to said tooth base, a flat shelf on said base projecting ahead of said opening and underlying said bit, the contiguous surfaces of the bit and tooth base limiting the downward movement of said bit, and means to removably secure the bit to said tooth base.
10. A composite excavating tooth having a detachable base portion for mounting in a bucket socket, said base portion being provided with openings, a thin flat cutting bit having fingers substantially in the plane of the bit to fit said openings, a shelf on said base portion projecting V ahead of the openings therein to support said bit, and means detachably to secure said fingers in said openings.
11. A, composite tooth of the class described having a detachable base portion for mounting in a bucket cutting edge and provided with slots open at the top, a cutting bit having fingers to fit said slots, interlocking means to prevent up-j ward movement of the bit relative to the base portion, a shelf projecting ahead of said slots and underlying said bit to support the same against downward fiexure, and means detachably to se-i,
cure said bit against movement relative. to said base portion.
12. An excavating tooth bit, comprising a metal member, having a body provided with a relatively sharp edge formed by the juncture of an upper downwardly beveled wearing surface and a lower bearing surface, the said body having a medial portion of substantially uniform thickness adapted to be used up as the beveled wearing surface is worn back, whereby the beveled wearing surface may be maintained of substantially the same characteristics as the tooth is worn back, said bit having a pair of rearwardly extending separated fingers the bases of which are located in substantially the same plane, which plane passes through the sharp edge of said bit, said fingers being provided with an enlarged transverse pin engaging surface.
13. An excavating tooth bit, comprising a metal member having a body provided with a relatively sharp edge formed by the juncture of an upper downwardly beveled wearing surface and a lower bearing surface, the said body having a medial portion of substantially uniform thickness adapted to be used up as the beveled wearing surface is worn back, whereby the beveled wearing surface may be maintained of'substantially the same characteristics as the tooth is worn back, said bit having a pair of rearwardly extending separatedfingers, said fingers being provided with a transverse pin engaging surface, said lower bearing surface and the lower surface of said fingers being in substantially the same plane which passes through the sharp edge of said bit, and said fingers tapering towards their ends and de-* creasing in lateral dimension away from said latter plane.
L W S E. YOUNIE.
US153032A 1937-07-10 1937-07-10 Replaceable point excavating tooth Expired - Lifetime US2204718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US153032A US2204718A (en) 1937-07-10 1937-07-10 Replaceable point excavating tooth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US153032A US2204718A (en) 1937-07-10 1937-07-10 Replaceable point excavating tooth

Publications (1)

Publication Number Publication Date
US2204718A true US2204718A (en) 1940-06-18

Family

ID=22545496

Family Applications (1)

Application Number Title Priority Date Filing Date
US153032A Expired - Lifetime US2204718A (en) 1937-07-10 1937-07-10 Replaceable point excavating tooth

Country Status (1)

Country Link
US (1) US2204718A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968880A (en) * 1959-02-20 1961-01-24 Gerald A M Petersen Reversible tooth having resilient retaining means
US3440745A (en) * 1965-05-25 1969-04-29 Tornborg & Lundbert Ab Fastening device for teeth for digging and cultivating implements
US3506073A (en) * 1967-04-27 1970-04-14 Allis Chalmers Mfg Co Folding gang lock
US3614164A (en) * 1969-08-01 1971-10-19 Carmet Co The Mine tool adapter
US3995384A (en) * 1974-11-25 1976-12-07 John F. Duncan Edge bit structure for implement blade
US4360981A (en) * 1977-12-12 1982-11-30 Suncor Inc. Lip and tooth combination for bucket wheel excavator
US5666748A (en) * 1995-12-11 1997-09-16 Esco Corporation Wear cap and components useable therewith
US6848203B2 (en) * 2002-08-19 2005-02-01 Caterpillar Inc Base edge protection system and method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2968880A (en) * 1959-02-20 1961-01-24 Gerald A M Petersen Reversible tooth having resilient retaining means
US3440745A (en) * 1965-05-25 1969-04-29 Tornborg & Lundbert Ab Fastening device for teeth for digging and cultivating implements
US3506073A (en) * 1967-04-27 1970-04-14 Allis Chalmers Mfg Co Folding gang lock
US3614164A (en) * 1969-08-01 1971-10-19 Carmet Co The Mine tool adapter
US3995384A (en) * 1974-11-25 1976-12-07 John F. Duncan Edge bit structure for implement blade
US4360981A (en) * 1977-12-12 1982-11-30 Suncor Inc. Lip and tooth combination for bucket wheel excavator
US5666748A (en) * 1995-12-11 1997-09-16 Esco Corporation Wear cap and components useable therewith
US6848203B2 (en) * 2002-08-19 2005-02-01 Caterpillar Inc Base edge protection system and method

Similar Documents

Publication Publication Date Title
US3624827A (en) Earthworking tooth and supporting adapter
US2689419A (en) Excavating bucket adapter for replaceable tooth points
US2427651A (en) Excavating tooth
US2965989A (en) End bits for blades
US2259456A (en) Bucket tooth unit
US3805423A (en) Bi-metal ripper tip for digging teeth
US3029534A (en) Bulldozer moldboard corner bit
US5782019A (en) High strength earth working tooth
US3325926A (en) Digger tooth and assembly for an excavating apparatus
US1927818A (en) Ripper tooth
US2204718A (en) Replaceable point excavating tooth
US2896345A (en) Tooth assembly
CN106661873A (en) Wear component for ground engaging tool
US2339128A (en) Digger tooth construction
US2987838A (en) Excavating tooth
US2330081A (en) Mining machine bit
US2549088A (en) Replaceable tooth for rotary earth cutting means
US3839806A (en) Two-piece router bit assembly
US2227674A (en) Dipper tooth assembly
US3997988A (en) One-piece replaceable cutting edge and tooth adapter with tooth
US1834391A (en) Replaceable excavator tooth
US4269275A (en) Replaceable edge bit assembly
US4098013A (en) Digging tooth with replaceable cutting edge
US3152411A (en) Edge bit structure for blade of earth working implement
US2990633A (en) Dipper teeth