US149223A - Improvement in axles for vehicles - Google Patents

Description

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UNITED STATES PATENT QEEIGE CHRISTOPH HOTZ, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN AXLES FORVEHlCLES.

Specification forming part of Letters Patent No. 149.223, dated March 31, 1874 application filed January 7, 1874.

To all whom it may concern:

Be it known that I, CHRISTOPH Ho'rz, of Chicago, in the county of Cook and State of Illinois, have invented an Improvement in Wagon Axles, of which the following is a sp ecitication The nature of this invention relates to an improvement in wooden axles, its object being to enable the wagon-maker to use lighter or inferior grades of Wood, and yet have the required strength.

The invention consists in sawing a longitudinal groove in the bottom of the axle, and inserting therein a thin llat iron bar, extending through the skeins, with a screw forged onthe end, to receive the nut, which secures skein on the axle.

Figure 1 is a perspective view of the axle, a part of one arm being broken away and the skein removed. Fig. 2 is a horizontal longitudinal section in the plane of the cross-bolts at w, in Fig. 4. Fig. 3 is an elevation of the tension-bar. Fig. 4 is a cross-section ofthe axle at y y, in Fig. l.

In the drawing, A represents a Wooden axle, which may be of less sectional area, and of inferior Wood, than standard axles. In the bottom, a groove is longitudinally cut, by means of a circular sa`w,in which is inserted a strap,

Y. B, of thin iron, with a round piece, a, forged on each end, which' is screw-threaded toreceive the nut b, the strap B extending through the thimble-skeins C, which are held on the axle arms by the nuts b. c are transverse bolts passing through the body of the axle and the straps B, but these may be dispensed with, if clips or axle-bands are used, which will bind the whole together.

As the best qualities of timber suitable for wooden axles are scarce and expensive, the employment of this tension strap enables poorer qualities of timber to be used, and gives the required resistance to ilexure under a load, which is sustained by the strap through its depth. The lateral flexure ofthe strap is prevented by the sides of the groove in which it is inserted.

The threaded 4ends may be dispensed with, and some other fastening for holding the skein may be substituted.

Idisclaim entirely the invention of a trussrod under the axle, with its ends passing through the skeins. I also disclaim the invention, broadly, of combined wooden and metallic axles; but- NVhat I do claim as my invention, and desire to secure by Letters Patent, is

The thin iron strap B, provided with the threaded ends a af, and inserted in a groove or saw-eut in the bottom of the axle A, substantially as and for the purpose set forth.

CHRISTOPH HOTZ.

Vitnesses: I

PETER SHUTTLER, WM. H. LoTZ.

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