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Publication numberUS2064059 A
Publication typeGrant
Publication dateDec 15, 1936
Filing dateDec 21, 1934
Priority dateDec 21, 1934
Publication numberUS 2064059 A, US 2064059A, US-A-2064059, US2064059 A, US2064059A
InventorsFellmeth Jacob William
Original AssigneeFinkl & Sons Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Detachable dipper tooth
US 2064059 A
Abstract  available in
Images(2)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Dec. 15, 1936. J. w. 'FEL LMETH 2,064,059

DETACHABLE DIPPER TOOTH Filed Dec. 21, 1934 2 Sheets-Sheet l i 7 24 Z2 21W W W Dec. 15, 1936. J. w. FELLMETH 2,064,059

DETACHABLE DIPPER TOOTH Filed Dec. 21, 1934 2 Sheets-Sheet 2 Ofa'coz Z67. fiffingZ/L, WWWYPGK M5.

Patented Dec. 15, 1936 ATENT OFFICE DETACHABLE DIPPER TOOTH corporation of Illinois Application December 21, 1934, Serial No. 758,544

2 Claims.

This invention relates to improvements in dipper teeth of the detachable type, adapted for renewal or replacement from time to time due to wear or breakage thereof.

Among the objects of my invention is to provide a simple form of removable tooth, together with a simple locking device for rigidly securing the detachable portio-nto its base, but permitting quick and easily operable means for unlocking and removing said detachable portion when desired.

The invention may best be understood by reference to the accompanying drawings, in which Fig. 1 is a view in side elevation showing one embodiment of my invention as applied to a dipper tooth.

Fig. 2 is a plan view of the device shown in Fig. 1, with the end portion thereof shown in horizontal section.

Fig. 3 is a perspective view of the tip detached from the base.

Fig. 4 is a rear view of the detachable tip.

Fig. 5 is a perspective view of the base of the tooth on which the tip may be detachably mounted.

Fig. 6 is a detail section taken on line 5-45 of Fig. 1.

Fig. '7 is an enlarged perspective view of the rotatable locking piece.

Fig. 8 is an enlarged perspective view of the wedge end which cooperates with the rotatable locking member.

Figs. 9 and 10 are enlarged fragmentary detail views taken from the upper surface of the detachable tip and showing the rotatable locking piece in part section, and illustrating the method of introducing said locking piece into locking position.

Fig. 11 is a fragmentary perspective view showing the locking piece inserted in partially locked position in the tip.

Fig. 12 shows a modified form of detachable tooth as applied directly to the front lip of a dipper or similar material-gathering device.

Fig. 13 is an enlarged perspective view of the form of device shown in Fig. 12.

Fig. 14 is a perspective view showing a fragmentary portion of the lip of the dipper to which the detachable tooth may be secured.

In the embodiment of my invention illustrated in Figs. 1 to 11, the detachable tooth portion Ill or tip is adapted for attachment to a projecting tooth base ll of the type usually secured to dippers or buckets for digging rock or earth. In this form, the tip is of the reversible type, in which the two side plates of said tip are similar and are arranged at equal angles to the median plane indicated by the section line 66 on Fig. 1, so that said tip can be attached to the base in either of two reversible positions, as desired. The base portion 1 I is provided with a wedge-shaped front lip having a slightly rounded front edge with a semi-circular recess 13 formed centrally thereof. Rearwardly of the recess I3 is formed a hole or aperture id extending perpendicularly to the me- 1 than plane of the lip, said hole being elongated longitudinally of the tooth, as clearly shown in Fig. 5.

The tip if! has a wedge-shaped point l5, and two side plates I6, I6 forming continuations of l5 the wedge surface of said point l5, and shaped so as to fit closely over the point of the base H. A semi-circular web H is formed at the base of the point between the plates l6, it, which web is arranged to fit snugly into the recess l3 formed in the base i i, to hold the point and base against lateral displacement relative to each other when in assembled position shown in Figs. 2 and 6.

The plates iii are provided with similar elongated apertures l8, l8 adapted to register with each end of the slotted aperture M in the base I l. Each of said apertures i8 is cut away or countersunk on an outwardly inclined plane along its side and rear edges so as to form an inverted partially conical surface l9 as clearly indicated 30 in Fig. 3. These cut away portions are designed to receive a portion of the locking device as shown in Figs. 3, 9 and 10.

The locking device includes an elongated memher 29 which resembles a half of a spool, split 3 substantially along its longitudinal axis. Said spool is shown in detail in Fig. '7 and comprises a semi-cylindrical intermediate portion 21 and upper and lower heads 22 and 23 formed with inner shoulders 22 and 23 respectively. These 0' shoulders are tapered or inclined outwardly at substantially the same angle as the counter-sunk surfaces l9, 19 formed on the exterior of the plates i6, it, for a purpose that will presently appear. v 45 In the preferred form shown, the inner face along which the locking piece 20 is split longitudinally, is arranged at a slight angle to the longitudinal axis of the locking piece 20 so as to form a tapered surface 24, as clearly shown in Figs. 1 and 7. This tapered surface is adapted to be engaged by a wedge pin 25, having a similar surface 24 but tapered in the opposite direction, as indicated in Fig. l.

The arrangement and method for detachably locking the tip ID on the base ll may now be described. The locking piece 20 with its enlarged heads 22 and 23 is of such shape and size that it may be passed through the apertures l8, l8 when the greatest dimensions of said heads extend in a direction longitudinally of the slotted apertures l8, as clearly shown in Fig. 9. Thus when the tip It is moved into engagement with the base H, and the slotted aperture in said base registers with both ends of the slotted apertures l8, 18 of said tip, the locking piece 20 may be inserted through either side of the tip, and through the apertured base H, to a position in which the heads 22 and 23 register laterally with the counter-sunk portions l9, 19 formed on the outer faces of the plates l6, It, as clearly shown in Fig. 11. In this position the locking piece may then be rotated through an angle of approximately with the conical surfaces 22 and 23 of the heads 22 and 23 fitting over the counter-sunk surfaces l9, 19 which are arranged at substantially the same angles, as previously described. After the locking piece has been swung through 90 as described, the wedge pin 25 may then be inserted in the forward end of the slotted aperture I8, it being understood, of course, that the smaller end of the wedge pin should be initially inserted in engagement with the smaller end of the locking piece 25, and with the tapered surface 24 of the wedge pin in engagement with the tapered surface 24 of the locking piece. The wedge pin 25 may then be driven home as shown in Figs. 1 and 2, so as to securely look all of the parts together. In this position, the tapered surfaces of the locking piece 20 and wedge pin 25 are in mutually reversed r-elation so that the rear face of the looking piece and the front face of the wedge pin are parallel with each other and to the adjacent sides of the aperture M, as shown in Fig. 1.

This arrangement permits the locking piece and wedge pin to be inserted from either side of the tip l0, and also renders the latter fully reversible with respect to the base II.

It will be also observed that when in locked position, as shown in Figs. 1 and 2, both heads 22 and 23 of the locking piece 29 are countersunk below the surface of the plates i6, E6 of the tip so as to be protected from excessive wear. The wedge pin 25 may project slightly above the top or bottom of the tip, but the length of said wedge pin may be varied within reasonable limits without affecting the proper co-operation of the parts. The tip may be readily unlocked merely by driving out the wedge pin 25 from its smaller end, which will release the locking piece 20 so that it may be rotated and withdrawn from apertures i4 and I8.

In a modified form of the device shown in Figs. 12, 13 and 14, I have shown a removable form of tooth m which may be applied directly to the lip 30 of a material-handling dipper or bucket 3! of any suitable form. In such case the lip 30 is itself provided with an aperture Id spaced from the front edge thereof, and a recess l3 for receiving a web similar to the web I! previously described in connection with the form of device shown in Figs. 1 and 2. In the modified form shown in Figs. 12 and 13, however, the tooth portion m is of the non-reversible type, in which the bottom plate H5 is parallel with the dipper lip 30, while the upper plate includes a forward portion H6 extending at an angle to the plane of the dipper plate 36 and a rearward portion H5 extending parallel to and spaced from the lower plate 16* as clearly shown in Fig. 13. In other respects, however, the construction and method of attachment of the tooth l is the same as has been described in connection with the reversible form of tip shown in Fig. 1.

Although I have illustrated and described certain embodiments of my invention, it will be understood that I do not wish to be limited to the exact construction shown and described, but that various changes and modifications may be made without departing from the spirit and scope of my invention as defined in the appended claims.

I claim:--

1. A dipper tooth including a base and a detachable tip, said tip consisting of a wedge point and diverging side plates adapted to span opposite sides of said base, said base having an aperture therethrough, each of said side plates having an aperture therein adapted to register with the aperture in said base when the parts are in assembled relation, and each of the apertures in said side plates being counter-sunk adjacent the rear outer end thereof with inclined conical surfaces, a locking piece adapted to pass through all of said apertures and having enlarged heads at opposite ends thereof provided with opposed conical surfaces adapted to fit the counter-sunk portions in said side plates, and a removable pin adapted to extend in lateral engagement with said locking piece to force the heads of the latter into locking engagement with the counter-sunk portions of said plates.

2. A dipper tooth including a base and a detachable tip, said tip consisting of a wedge point and diverging side plates adapted to span opposite sides of said base, said base having an elongated aperture therethrough, each of said side plates having an aperture therein adapted to register with the aperture in said base when the parts are in assembled relation, and each of the apertures in said side plates being counter-sunk adjacent the rear outer end thereof with inclined conical surfaces, a locking piece having integral enlarged heads at opposite ends thereof provided with opposed conical surfaces adapted to fit the counter-sunk portions of said side plates, said heads extending from one side of said locking piece so that the latter may pass through all of said apertures when held with said enlarged heads disposed crosswise of said apertures, said locking piece and heads thereafter being arranged to be rotated at substantially 90, with said heads fitting in the countersunk portions of said side plates, and a removable pin adapted to extend in lateral engagement with said locking piece to hold the heads of the latter rearwardly in looking engagement with the counter-sunk portions of said side plates.

JACOB WILLIAM FELLMETH.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2709941 *Jun 23, 1951Jun 7, 1955Electric Steel FoundryTwo-part holding keys
US2891333 *Sep 10, 1954Jun 23, 1959Lesher W Van BuskirkDigging teeth for excavating, dippers, etc.
US3063175 *Apr 19, 1960Nov 13, 1962Petersen Gerald A MReversible tooth for earth digging equipment
US5579594 *Mar 29, 1994Dec 3, 1996Afe Metal SaDevice and process for bonding wearing parts on an excavator
US6467203 *Aug 30, 2001Oct 22, 2002Trn Business TrustRemovable tooth assembly retention system and method
US6467204Aug 9, 2001Oct 22, 2002Trn Business TrustAdapter assembly having multiple retainer pins
US6502336Aug 2, 2001Jan 7, 2003Trn Business TrustApparatus and method for coupling an excavation tooth assembly
US6574892Sep 5, 2001Jun 10, 2003Trn Business TrustRetainer pin having an internal secondary retainer pin
US6757995Jul 12, 2002Jul 6, 2004Trn Business TrustSystem and method for coupling excavation equipment components
US6799387Jan 29, 2002Oct 5, 2004Trn Business TrustRemovable adapter assembly having a retractable insert
US7032334May 28, 2004Apr 25, 2006Trn Business TrustSystem and method for coupling excavation equipment components
US7036249May 22, 2003May 2, 2006Trn Business TrustTooth adapter having an elastomeric clamp assembly and method for using same
US7640685 *Sep 8, 2006Jan 5, 2010Esco CorporationCoupling arrangement
US7730652 *Dec 4, 2006Jun 8, 2010Esco CorporationWear assembly
US7862277Sep 23, 2003Jan 4, 2011David DingwallComponent interlocking
US7997017Jun 3, 2010Aug 16, 2011Esco CorporationWear assembly
US8312650Jun 30, 2011Nov 20, 2012Esco CorporationWear assembly
US8327563 *Nov 8, 2010Dec 11, 2012Cutting Edge Replacement Parts Pty LtdPin for interlocking components
US8336233 *Apr 6, 2012Dec 25, 2012Gaetano LombardoWear plate assembly
US8555532Mar 28, 2007Oct 15, 2013Metalogenia, S.A.Detachable fastening system between a male piece and a female piece, pin and female piece
US8943716Oct 4, 2012Feb 3, 2015Caterpillar Inc.Implement tooth assembly with tip and adapter
US8943717Oct 4, 2012Feb 3, 2015Caterpillar Inc.Implement tooth assembly with tip and adapter
US9057176 *Jun 27, 2012Jun 16, 2015Caterpillar Inc.Retention system for a ground-engaging tool
US9057177Oct 4, 2012Jun 16, 2015Caterpillar Inc.Implement tooth assembly with tip and adapter
US9062436Oct 4, 2012Jun 23, 2015Caterpillar Inc.Implement tooth assembly with tip and adapter
US9322150 *Apr 10, 2014Apr 26, 2016Esco CorporationWear assembly
US9428886Sep 22, 2014Aug 30, 2016Caterpillar Inc.Implement tooth assembly with tip and adapter
US9528248Dec 19, 2014Dec 27, 2016Caterpillar Inc.Implement tooth assembly with tip and adapter
US9546471Dec 19, 2014Jan 17, 2017Caterpillar Inc.Implement tooth assembly with tip and adapter
US9624651Apr 27, 2015Apr 18, 2017Caterpillar Inc.Implement tooth assembly with tip and adapter
US20050274047 *May 28, 2004Dec 15, 2005Trn Business TrustSystem and method for coupling excavation equipment components
US20060078373 *Sep 23, 2003Apr 13, 2006David DingwallComponent interlocking
US20070000157 *Sep 8, 2006Jan 4, 2007Esco CorporationCoupling arrangement
US20070137071 *Dec 4, 2006Jun 21, 2007Esco CorporationWear assembly
US20100236109 *Jun 3, 2010Sep 23, 2010Esco CorporationWear Assembly
US20110194912 *Nov 8, 2010Aug 11, 2011Cutting Edges Equipment Parts Pty LtdComponent interlocking
US20130000162 *Jun 27, 2012Jan 3, 2013Renski William JRetention system for a ground-engaging tool
US20140215868 *Apr 10, 2014Aug 7, 2014Esco CorporationWear assembly
USRE43693 *Oct 11, 2011Oct 2, 2012Emrich Robert KCoupling arrangement
CN101326333BDec 4, 2006Jul 10, 2013爱斯科公司磨耗总成
CN103046611B *Dec 4, 2006Aug 3, 2016爱斯科公司磨耗总成
EP1595035A1 *Sep 29, 2003Nov 16, 2005Cutting Edges Pty LtdComponent interlocking
EP1595035A4 *Sep 29, 2003Mar 14, 2007Cutting Edges Replacement PartComponent interlocking
WO2008116942A1 *Mar 28, 2007Oct 2, 2008Metalogenia, S.A.Detachable fastening system between a male piece and a female piece, pin and female piece
Classifications
U.S. Classification37/456
International ClassificationE02F9/28
Cooperative ClassificationE02F9/2833, E02F9/2825
European ClassificationE02F9/28A2C, E02F9/28A2B