USRE3079E - Improved carriage-wheel - Google Patents

Description

UNITED STATES PATENT (')rFIoE-o JAMEs D. sAnvEN, on COLUMBIA', TENNESSEE.

IMPROVED CARRIAGE-WHEEL.

Specification forming part of Letters Patent No. 17,520, dated June 9, 1857; reissue No. 3,079, dated August 1.1, 1868.

To all whom t may concern:

Beit known that I, JAMES D. SARVEN, otl

Columbia, iu the county of Maury and State of Tennessee, have invented a new Improvement in UarriageWheels; and I do hereby declare the following, when taken in 'connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and 'exact description of the same, and which said drawings constitute part ot' this specification, and represent, in

A Figure 1, a front view ot' a wheel with the front part of the hub removed to show a. section at the spokes; Fig. 2, a side view ot the hub to show a section of the llanges; Fig. 3, a sectional view of' the flanges detached and in Fig. 4, an inside view ci' one ofthe tlanges.

Thisinvention relates to animprovement in wheels for vehicles of various descriptions, which aretermed carriagewheels,7 theobject being to construct a wheel with abearing surface or support between the spokes near the hub, whereby the wheel is greatly strengthcned; also, to provide a wooden huband spokes with an additional support at the hub.

To this end my invention consists, first, in the arrangement of the spokes at the hub so that a bearing-surface between each spoke and the next is obtained, thereby forming a solid band around the hub; second, in combining with a wooden hub a metallic baud or flange surrounding the hub and bearing against the spokes, so as to support the hub and the spokes at and near to the hub.

In order to the clear understanding of my invention, I will fully describe the same as illustrated in the accompanying drawings.

It is needless to describe the ordinary method of inserting the spokes. I will only call attention to the fact that in the common arrangement, the spokes being mortised into the hub, they must necessarily be at a distance from each other at the hub to give a suiiicient amount of material between the mortises to sustain the spokes in the huh.

In the drawings I illustrate one arrangement of my invention, in which alternate spokes A, as in Fig. 1, are constructed with a tenon fitted into a mortise in the hub. At the hub, and a short distance therefrom, the surfaces of the spokes upon the sides are formed flat, and between the spokes A other spokes,

B, are fitted, so that the surface of all the spokes meet a short distance from the hub, as denoted in Fig. 1, and so as to form a bearingsurt'ace or solid belt of wood entirely around the hub. I torm a slight recess in the hub, between the mortises ot' the spokes A, sutlieient to retain the spokes B in their place. The spokes B are fitted and driven between the spokes A, and all the spokes united solidly t0- gether. By this means a bearing may be formed much greater than the usual diameter of the hub, and a. greater number oi' spokes inserted, whereby the wheel is greatly sus` tained against the ordinary strain, and the .telly also sustained by an increased number of spokes 5 or the same object may be accent plished by forming a small tenon upon each and every spoke and corresponding mortises made in the hub, and the spokes fitted so as to have a bearing against cach other, in like manner as I have described.

As a further support for the spokes, I construct bands or flanges J and H, which are tted to pass on over the hub-one upon the rear and the other upon the front-so as to bear up against the face of the Aspokes upon both sides, and the two bands or flanges connected together by bolts passing through or between the spokes, or by other suitable device; and these ilanges may be placed upon the hub before or after the spokes are inserted. I prefer, however, (as a matter ofeou`venience,) to rst t the spokes, and then place the flan ges over the hub against the spokes. These tlanges extend up onto the face of the spokes, so as to form a bearing for the spokes above the tenons, arid thereby greatly relieve the strain uponthe tenons of the. spokes and the mortises of'the hub.

Asingle plate upon the outside of the spokes will, to a certain extent, accomplish the object, but not so fully and perfectly as the plates upon opposite sides, as, where two plates or flanges are used and the two connected together, the strain is taken almost entirely from the tenon and the wooden portion ot' the hub; and to fully accomplish the object of the in vention it is essential that the two plates he connected in some manner between the spokes, so as to form, as it were, a single metallic band around the hub, through which the spokes pass.

I do not wish to be understood as confining the metallic band or flanges to any particular arrangement of spokes, as itis alike applicable to other arrangements of spokes, where the flange can have a bearing-surface upon the face of the spoke.

Having fully described my invention, what I claim as new and useful, and desire to secure by Letters Patent, is-

1. A carriage-Wheel constructed with a wooden hub, in which the spokes are arranged at the said hub, so as to have a bearing-surface or support between each other, so as to form a continuous body or band" aro-und the said hub, substantially in the manner and for the

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