US1274533A

US1274533A - Steam-shovel dipper.

Info

Publication number: US1274533A
Application number: US20643017A
Authority: US
Inventors: Alexander M Gow
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-12-10
Filing date: 1917-12-10
Publication date: 1918-08-06
Anticipated expiration: 1935-08-06

Description

A. IVI. 60W.

STEAM SHOVEL DIFFER.

APPLICATION man nic. 1o. 1911.

Patented Allg.

U m5 NN A To allvwkom it may concern:

. Beit known that I, ALEXANDER M. Gow, a citizen of the United States, and resident of Duluthf'in the county of St. Louis and State fof Minnesota, have invented certain new anduseful Im rovements in Steam- Shovel Dippers, of w ich the following is a specification.

This' invention relates to steam shovel dippers and more articularly to dipper fronts.

- One of the o jects of my invention is to improve and simplify dipper fronts to facilltate the. ecient use thereof.

Another object is to improve the connection of teeth to dipper fronts to facilitate their removal and replacement, and also to revent lateral movement of the teeth when xed in place. Generally speaking, these and other objects are accomplished by providing a dipper front comprising a wall having recesses on the -inside and outside for the receptlon of'a bifurcated tooth, thewalls of the recess preventing lateral movement of the tooth.

The invention is illustrated on the accompanying sheet of drawings in which,

Figure 1 is a top plan view ofthe dipper front; l. Fig, 2 is a front elevation of the sa e;

Fig. 3 `is a side elevation of the ipper front parts being in section to show the connection between the front wall of the dipper and one of the teeth; and l5 Fig. 4:' is a detail sectional view on an enlarged scale showing the connection between the dipper front and tooth. i

At present it is customary to forge teeth with lar e shanks which extend into the dipl per on t e inside. Another construction 4is to cast the shank integral with the dipper front. In either case spaces areleft between the shanks of the teeth on the inside of the dipper, and these spaces fill upwith dlrt and Il ice reducing the capacity of the dipper and preventing the free ingress and egress of the material. In. my improved dlpper front the inside of the dzpper is practically smooth, while-I make plovision on the outside for Il any reinforcing or lstrengthening that may be necessary.

By referring to the `figures .of the draw ings, it will -be noted that I have shown a di per vfront .havinga front wall 11 and Il sid;

walls

12 and 13, the'`- -front wall being the front. The frontportionof each 'ofthe i distance from the center lineof the front inside surface.

Bpecmeationot Letters Estant. Patented Aug. 6, 1918. appnmnmee neeembr 1c, 1e rr. serial N9. acceso.

somewhat curved." k,Formed integrall 'with f A this front are afpluralit.v ofstrengt enin ribs 14 which are. locat on the outside'o ribs is provided witha recess 15 which wi ens "60" 4tovvard the upper end of thev front. he i inslde of the ront also is provided with an I oppositely arranged duplicate recess 16, the two recesses in each case formin atongue 17 which tapers outwardly and ts into the 65 bifurcated portion of the tooth 18.` The upper ends ofthe duplicate recesses. 15 and 16 terminate in a notch 19, or it might be said that a U-shaped recess is provided for the reception of each tooth 18.` The side -walls and 21 of each recess coperate tol prevent lateral movement of the teeth when the same are set in place. To securely fasten the teeth to the dipper front,.rivets 22 or their equivalent are passed through registering` openings in the bifurcated end of the teeth and the associated ton es 17 lformed by the recesses 15 and 16. l herecesses 15 and 16 at their lower extremities, terminate in shoulders 2 3 against which the ends of the bifurcated portion of the teeth 18 abut, and in view of the fact that the exterior of the bifurcated portions of the teeth are flush with the coperating rib portions a smooth surface is provided to facilitate the operation of the dipper. v

In view of the fact that the dipper front is curved or concave on the inside, the outer recess 15 in each case is located at a greater than the inside recess 16 in each case. It

. will be noted also that the outside recess 15 prrojects farther' from the 'surface of the ont than the inside recess does and that the rib on the outside is in alinement with the 95 recess to act as a runner to protect the front.

l By means of this arrangement, teeth may be reversed thereby prolonging the life of the teeth withoutreforging'the same. These teeth are easily removed and replaced. The same are held a ainst lateral movement when set in place an at the same time the dipper front 1s provided with the desirablesmooth It is my intention to cover all modifications which come within the spirit and scope ofthe. following claim.

" What I claim is:

A dipper having a rib on the exterior'of the front thereof, said rib having` a longisoV i tudinal recess extending to the top of the confined between the shoulders, and means front and around the upper edge thereof and forsecuring the tooth in place: 12 into the inner side of the front of the dipper, Signed at Duluth, Minn., this 5th day of the recess being continuous from the eXte- December, A. D. 1917.

5 rior to the interior of the front, uniform, ALEXANDER M. GOW.

and of U shape to form a, solid tongue having Witnesses: lateral shoulders, a, reversible tooth having JOHN E. CARLSON,

jaws to receive said tongue, said aWs being E. J. DILLoN.