US1069919A - Die for forming wheel-rim sections. - Google Patents

Description

L. M. & S. D. GHANCELLOR.

DIE FOR FORMING WHEEL RIM SECTIONS;

APPLICATION FILED JUNEIL 1909.

1,069,919.. Patented Aug.12,1913.

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LEONIDAS M. CHANCELLOR AND SULLIVAN D. CHANCELLOR, OF "WILMINGTON, OHIO.

DIE FOR FORMING WHEEL-RIM SECTIONS.-

Application filed June 11, 1909.

To all whom it may concern:

Be it known that we, LEONIDAS M. CHAN- GELLOR and SULLIVAN D. CHANCELLOR, citizens of the United States, residing at Wilmington, in the county of Clinton and State of Ohio, have invented certain new and useful Improvements in Dies for Forming VVheel-Rim Sections, of which the following is a specification.

Our invention relates to the improvement of dies for forming wheel rim sections and has particular relation to dies for the production of flaring wheel rims or sections thereof of the character usually employed in the construction of wheels for corn planters and similar agricultural machines.

The objects of our invention are to provide an improved die construction by means of which an ordinary straight metal band may be quickly and accurately stamped or pressed into the flaring or curved form which is desirable in the production of concave wheel rims of the class above referred to. These objects we accomplish in the manner illustrated in the accompanying drawing, in which:

Figure l is a central vertical section through the upper and lower die members showing the upper die member out of en gagement with the lower die member and showing the rim section supported by the main die member previous to the operation of shaping the same. Fig. 2 is a similar sectional view showing the upper die member in engagement with the lower die member and with the rim section curved or flared as a result of the downward pressure of the upper die section, and, Fig. 3 is a plan view of the lower die member and rim section shown in Fig. 2.

Similar numerals refer to similar parts throughout the several views.

In carrying out our invention, we employ a receiving die member 1, which is adapted to be rigidly supported in a suitable manner, said die being in the nature of a circular block of hardened steel or other suitable properly hardened material, through which may be formed a central vertical opening 2, the upper end portion or mouth of which is enlarged, forming at the base of said enlargement a circular shoulder or horizontal seat such as is indicated at 3. The inner circular wall surface of the die member 1 above the shoulder 3, is flared outwardly from said shoulder on a prop- Specifieation of LettersPatent.

Patented A11 12,1913.

Serial No. 501,489.

erly curved line as indicated at 4-, thus imparting to the enlargement or mouth of the opening 2 a curved taper.

5 represents the upper movable die section or member which is adapted to be driven downward and moved upward by any suitable well known means. This upper die member is also in the nature of a ring body and in its lower half has its periphery cut away or recessed to form an underside horizontal shoulder 6. From the inner circular line of the underside shoulder 6, the periphery of the lower and recessed portion of the body 5 is shaped to present an inwardly curved tapering surface such as is indicated at 7, thus converting the lower portion of the body 5 into a reduced tongue or extension portion 5 the outer surface or periphery of which is curved and tapered to conform to the curvature and taper of the surface a of the die member 1. It will be observed, however, that the circumference of the tongue or extension 5 of the member 5, is sufficiently less than the internal measurement of the surface 4, to.permit of a wheel rim section of the usual thickness being embraced between said surfaces. The tongue or extension 5 of the member 5, is of such length and the shoulder 6 is of such height, that when said tongue is in contact with the shoulder 3 of the member 1, said underside shoulder 6 is in contact with the upper side of the member 1.

In utilizing our improved die members, a wheel rim section 8 is first produced in the form of a flat ring or band as indicated in Fig. 1 of the drawing. This band is seated as shown within the enlargement of the central opening of the die member 1, said enlargement being of such size as to permit of the lower portion of the band or rim section fitting snugly therein, as shown. This being accomplished, the upper die section is driven downward, the tongue portion 5 thereof, entering the band 8 and in its descent within said band, resulting through contact of the curved and tapering surface 7 with the inner side of said band, in compressing the latter until its outer surface is in complete contact with the curved surface 4: of the die member 1. In this manner the rim section has imparted thereto the desired curved flaring form in cross section, such as is indicated in Fig. 2 of the drawing. By this operation it will readily be understood that a previously formed metallic band may by one operation, be converted into a flaring Wheel rim section of accurate and uniform curvature and it will readily be seen that wheel rim sections formed in this manner, will be of strong and durable construction.

A particular advantage in the employment of the dies described, lies in the fact that each rim produced is an exact duplicate of the previously produced sections, thus facilitating the formation of concaved wheel rims of accurate construction.

What we claim, is:

Forming-dies for metal Wheel rims comprising a female member having an internal annular shoulder which is initially adapted to support the metal blank, and a surrounding wall gradually flaring from the said shoulder outwardly, and a male member having a reduced extension of a convergent contour and having a plane lower end constructed and adapted for movement into contact with said shoulder, said flared and convergent surfaces being of a relatively parallel curvature throughout.

In testimony whereof we affix our signatures in presence of two Witnesses.

LEONIDAS M. GHANCELLOR. SULLIVAN D. CHANCELLOR. Witnesses:

M. R. DENVER, E. J. HIATT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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