US1796737A - Dipper tooth - Google Patents

Description

March 1931- L. w. VAN BUSKIRK 37 DIPPER TOOTH Filed May 23, 1929 Cltkommq.

Patented Mar. 17, 1931 1,796,737

UNITED STATES PATENT OFFICE LESHER W, VAN BUSKIRK, OF EASTON, IPENNSYLVANIA DIPPER TOOTH Application filed May 23, 1929. Serial No. 365,462.

The present invention relates to excavat- In carrying out the invention, the teeth 7 ing dippers, and aims to provide simple and are provided at the opposite sides thereof effective means for protecting the front edge with the outstanding shields 10 of V or U of the dipper from which the teeth extend. shape, so as to be disposed astride or around 6 The dipper teeth are carried by the front the front edge 8 of the dipper, as seen in of the dipper, and project beyond the edge Fig. 2. thereof, leaving said edge exposed between These shields extend close together between the teeth. As a result such edge of the dipper the teeth, thereby protecting the edge 8 from is subjected to severe abrasion and wear,-rewear and abrasion. The wings of the shields 10 sulting in such edge being worn away beextending above and below the front edge tween the teeth. This notonly reduces the portion of the dipper will protect same. efiiciency of the dipper, but also has the tend- Said shields will take the wear and tear ency of forming notches or recesses in which which is normally received by the edge, so stones and other objects become wedged, prethat when a tooth is worn out, it may be 15 venting the efficient dipping action and replaced, thereby also renewing the protecdumping of the dipper. Moreover, the weartion for the front edge of the dipper. ing away of the front edge of the dipper As shown, the teeth 7 are of one piece, but between the teeth will weaken the front of when teeth are employed comprising bases the dipper, thereby placing greater strain on and removable tips, the shields may be in- 20 the remaining portions to which the teeth are tegral either with reversible or other bases secured, and as a result the front of the dipor the tips. per is apt to break under the. severe strains The shields 10 are arranged astride the to which the teeth are Subjected in the digcrotches of the teeth so as to be disposed ging action. astride the edge portion of the dipper when In carrying out the present invention the the te th are attached to th front 9, The 7 teeth are provided With shields for the front hields 10 collectively provide a, digging edge edge of the dipper, and which take the wear in front of th dg 8. and abrasion between the teeth, thereby pro- Having thus described the invention, what tecting the front edge of the dipper. i l im d a new is:

With the foregoing and her O j s in Adipper tooth havingacrotch to fit astride view, which will be apparent as the descripth dg portion of a dipper and having intion proceeds, the invention resides in the tegral outstanding shields at opposite sides, construction and arrangement of parts, as id shields being of U-shape and having hereinafter described and claimed, it being wings to extend above and below said edge 35 understood that changes can be made within ortion of th dipper. the scope of what is claimed, without depart- I te timony wher of I hereunto afiix my ing from the spirit of the invention. signature.

The invention is illustrated in the accom- LESHER W. VAN BUSKI'RK. panying drawing, wherein- Figure 1 is a perspective view of a dipper embodying the improvement.

Fig. 2 is an enlarged section of the front edge of the dipper, showing one of the shields of a dipper tooth in side elevation. As shown, the dipper teeth 7 are secured astride the digging edge 8 of the dipper front 9, and the improvements may be embodied in dipper teeth of various kinds, either of one piece as shown, or those comprising revers- 50 ible or other bases and removable tips.

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