US1176275A - Dipper-tooth. - Google Patents

Description

I. O'F. CLARK, In. DIFFER TOOTH. APPLICATION m2o Aus.25. 1913.

Patented Mar. 21, 1916.

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UMD PATENT carica.

JOHN 0FA-LLON CLARK, JR., OF ST, LOUIS, MISSOURI, ASSIGNOR TO AMERICAN MAN- GANESE STEEL COMPANY, OF AUGUSTA, MAINE, A CORPORATION 0F MAINE.

DIPPER-TOOTH.

Specification of Letters Yatent.

Patented Mar. 21, 1916.

Application tiled August 25, 1913. Serial No. 786,358.

Missouri, have made and invented certain new and useful Improvements in Dipper- Teeth, of which the following is a specification.

My invention relates to teeth designed for use with'the dippers or buckets of excavating, dredging, digging, and similar mal chines,and particularly to that kind or class of teeth in Which'a permanent supporting member or base s provided to the end of which a detachable tooth point may be secured, so that when the point becomes worn out in service it may be replaced by a new 'point and.without discarding the base porferred to, and an improved construction of base adapted to -support the detachable.

tion of the tooth. y

The object of my invention is to provide an improved construction of detachable and renewable tooth point ofthe type above repoint, all as hereinafter described at length and claimed in the concluding claims.

The vdrawing accompanying and forming a part of this application illustrates the preferred embodiment of my invention, although it will be understood that my invention includes such variations and modiications of the particular tooth point and base illustrated as will be obvious to those skilled in the art to which my invention relates.

portion of my improved dipper tooth, thev same being commonly secured to the inner face of a dipper body and having a recess 5 designed to tit over the edge or lip of the dipper and a jaw 6 which extends a short distance along the outer surface and toward the bottom of the dipper body, although these features are not involved in my invention.

The outer or free end of-the base of my improved tooth 'is so sha ed as to provide:

two inclined seats 7, whic merge with one another and form a triangular point support to which the detachable and renewable point 8 of the tooth is secured and from which support it may be readily removed when worn out, and an unworn point sub stituted therefor, thus renderinfg'it unnecessary to renew the base when the point has been worn to such an extent as to be unserviceable. While the point support is referred to herein as triangular in form it will be seen that it departs from a true triangle in that its apex is rounded, and I use the term in a general sense to indicate a point support of tapering forni, and intend to include a point support in which the seats themselves may be slightly curved, as is sometimes the case in practice.

The inclined seats 7 are provided each with a centrally located longitudinally extendingJ recess 9 which recessesincrease in depth as they recede from the apex of the triangular point support, as-shown in Figs.' 1 and 2 of the drawing and which recesses are` separated from one another by a longitudinzv extending web 16; and two transversely extending holes 1() are provided, which holes intersect the recess 9 and are adapted to receive bolts, pins, or similar elements for holding the detachable point in place as will hereinafter appear.

The detachable point portion of my improved dipper tooth is bifurcated asshown, to thereby provide two sides or arms 11, the inner surfaces of which arms are inclined to correspond with the inclination of the seats upon the base and which inner surfaces merge with one another' to thereby provide a triangular opening which lits over the tri-` f angular point support of the base hereinbei fore referred to and as will be understood from Fig. 1. Each of the arms 11 is provided with a centrally located securing lug 12 upon its inner surface and which lugs are provided each with a hole 13, which holes come opposite the holes 1,0 when the point is in place upon the base so that'a pin or bolt may be inserted in the holes to hold the point in place. rlibe lugs 12 thusproject toward one another; and they are preferably located adjacent the rear ends of the arms so that they Willlie adjacent the rear portions of the recesses 9 into which they enter as the point is put in place by moving it longitudinally along the center line of the base,l as,

will be understood, i a

Means are preferably provided for preventing lateral movement of the ppint relative to the base; such means being shpwn as con'iprisingeJ central recess 14 formediin the point at the apex of the triangular opening therein, and a projection 15 formed at the` apex of the triangular point support of the holes, are such that the point may be re' versed upon the base tothereby secure more uniform wearing away of the extremity of the point and of the two arms thereof; al though my invention is in no way limited to dipper teeth in which the detachable point is also reversible. Y

Having thus described and explained my invention, I claim and desire to secure by Letters Patent; Y

1 -A base for a dipper tooth comprising a body with a forwardly projecting point supporting nose, said nose provided with upper and lower rearwardly extending noncommunicating recesses, the transverse web intermediate said recesses providing for the lateral bracing of the nose side walls.

2. A base for a dipper tooth. comprising a body with a. forwardly projecting point supporting nose, said nose provided with rearwardly extending and deepening upper and lower non-communicating recesses with the bottom walls thereof extending substantially parallel, said recesses defining a transverse web extending between the nose side `walls and providing for their lateral bra-cing or reinforcement, said web projecting beyond the front of said nose.

3. A dipper tooth removable point including rearwardly diverging upper and lower arms, confronting isolated or'separated bolt engageable lugs projecting from the inner surfaces of said arms, the meeting portions of said arms provided lwith a forwardly exending recess lying directly in front of said ugs.

4. A dipper tooth removable point including rearwardly diverging upper and lower arms, confronting isolated bolt engageable lugs projecting from the inner slrfaces' of said arms, the meeting portions of said arms provided with a forwardly extending recess lying directly in front of said lugs, said lugs "and recess lying in the median/p ne ofgsaid point. 5 i

5. A dipper tooth compris" g aibase with a forwardly projecting nose,/' said nose provided with rearwardly ex lding and deepi truding portion of said web, means extend.

ing through and engaging the side walls of said nose, detaehably engaging said lugs and coacting with the securing means ef.- fected by the protrusion of said web and the receiving recess Within the sa id point for the detachable and rigid securement of said point and base.

G. A base for a dipper tooth comprising a body with a forwardly projecting bifurcated nose, a web connected to and extending between the side walls of the nose, said web extending to the bottoni of said bifurcation and beyond the front extremity of said nose. l

Signed at Chicago in the county of Cook and State of illinois this 16 day of August A. D. 19l3.

JOHN OFALLON CLARK, JR.

itnessesz JOSEPH H. HUGHES, GEORGE RUSSELL.

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