US1095605A - Point for dipper-teeth. - Google Patents

Description

P. M.& P. R. TIPPING.

POINT r03 DIPPBB TEETH.

APPLICATION FILED NOV. 6, 1911.

Patented May 5, 1914.

M M w? W? 5 W/T/VEJJEJ v UNITED STATES PATENT OFFICE.

rum: in. TIPPING AND FRANK a. TIPPING, ors'r; PAUL. MINNESOTA.

roman ron Duran-TEETH.

Specification of Letters Patent.

Patented lilay 5, 1914.

Application filed November 6, 1911. Serial No. 658,836.

To all whom it may concern:

Be it known that we, FRANK M. TIPPING and FRANK R. TIPPING, of St. Paul, Ramsey The object of our invention is to provide a dipper tooth-point which can be easily and quickly put on the shank of the tooth-and as readily, removed. Generally in devices of this kind the point is mounted in such a manner that it becomes wedged on the shank and corroded so that it is practically impossible to remove the point without breaking the tooth.

A further object is to provide a point mounted in such a Way that the strain will be distributed on the strongest part of the tooth shank.

A further object is to provide a oint having a suiiicient amountof meta to allow for welding.

The invention consists generally invarious constructions and combinations, all as hereinafter described and particularly pointed'out in the claim.

In the accompanying drawings forming part of this specification, Figure l is a sidenew of a dipper tooth embodying our invention, Fig. 2 is a top view of the same,

Fig. 3 is a side view of the point removed from the tooth, Fig. 4 is a side view of the'forward portion of the tooth, Fi 5 is a transverse sectional view throug tooth and point, on the line wm of Fig. 1, Fig. 6 is. a top view, showin the construction' of the tongue on the toot In the drawing, 2 represents the shank of the tooth, havin the usual socket 3 to receive the edge 0 the dipper; or shovel.

4 is a tongue, projecting forwardly from the tooth shank and having u per and lower parallel surfaces 5 and 6, the end of the shank being recessed at the rear of the surfaces 5 and 6 toform projecting shoulders or webs 7. The surface 5 is shorter than thesurface 6 and merges intoa' downwardly inclined surface 8 which intersects a shorter, upwardly inclined surface 9 forming a' continuation of the surface 6. The orward portion of the tongue has the appearance, therefore, of. an irregular wed e, one face being longer than the other. T e tongue is also provided with a longitudinal, centrally arranged depression or recess 10, extending the i from the rear end of the surface 5 forwardly around the nose of the tongue to'the rear end'of the surface 6. (See Figs; eand 6.) This recess is preferably arranged along the middle line of the tongue and equally spaced from the side faces thereof. r

11 is the point ofthe tooth, having a fiat under surface and a curved upper surface, as usual in points of this kind, and provided with a socket 12 corresponding in form to j the point and tongue are assembled and form substantial bearing surfaces for the rear endof the point. The wall of the socket 12 is provided with a rib 14: extending entirely around the socket and adapted to fit snugly into the recess 10 in the tongue when the parts are put togetheri This rib and recess positively prevent lateral movement of the point with respect to the tongue, holding them firmly in alinement with one another. Endwise movement of the point to separate it from the tongue is prevented by a bolt 15 that passes through the point 11 and the tongue 4, the point being countersunk to receive the head and the locknut of the bolt, as shown in Fig. 5. Pressure on the curved surface of the oint will be transmitted to the surface 8 an from thence through the lower jaw or prong of the point to the rear portion of the tongue at the point where it is joined on the shank. The strain,

therefore, will be exerted inwardly and tendency to split the point and the shank will be avoided. The projecting shoulders 7 cofiperate with the tongue 4 to form recesses in which the beveled fac'es'13 are seated, and pressure on the tooth point will only serve to wedge it more firmly into the shank of the tooth;

We claim as our invention The combination, with a dipper tooth shank having a tongue formed thereon and shoulders at the base of said tongue, said shoulders having inclined surfaces overhanging said tongue and cooperating therewith to form wedge-shaped recesses, the upper and under surfaces of said tongue being" parallel substantially with one an-' other and merging into converging surfaces of unequal length at the tip of said tongue, the upper and under surfaces of said tongue noemeoe having longitudinal recesses therein extend said arms and said tongue in the rear of the 10 ing from the base to the tip thereof, a point beveled-end surfaces of said tongue.

having a longitudinal socket corresponding In testimony whereof, We'have hereunto substantially in form to said tongue and set our hands this 4 day of November, 1911.

5 provided with a longitudinal rib to enter the FRANK M. 'TIPPING. recess in said upper and under surfaces, the FRANKIE. TIPPING. arms of said point above and below said 'lvitnesses:

socket having beveled ends to fit the surfaces GENEVIEVE E. SORENSEN,

of said shoulders, and a bolt passing through EDWARD A. PAUL.

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