US115497A - Improvefvlent in carriage-wheels - Google Patents

Description

lzsh "--Sh .1L JOHN MCCREERY. ee e Improvement in Carriage Wheels. N0. 11.514917. `Pal-tented May 30,1871.

` Improvement in Carriage'Wheels.

` Patented May/30,1871. l

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JOHN MccnEEnY, onsrisinenniin, immers.

, iMPRovEMNT IN cfAizRlAleEl-WHEELS.

. Speciiicationforming partof Letters Patent No. 115,497, dated May 30, 187i.

` To all tbhom 'it may concern:

l Be it known that I, JOHN MCCREERY, of Springfield, in the county of Sangamon and State of Illinois, have invented an Improved Garriage-Wheel; and I do hereby declare the followinglto'be a'full, clear, and exact description of the same, referencebeinghad to the accompanying drawing forming part of this specification, in which- A Figure 1 is a cross-section of the hub; Figs.

` 2 and 4, sectionsof the metal bands, showing modifications in construction; Fig. 3, an elevation, showing the inner face of said band, when constructed as `represented in FigA;

` and Fig. 5, a plan of the'whole hub, some of the spokes having been removed.

Similar letters of reference in the accompanyin g drawing indicate corresponding parts.

This invention is an improvement upon the carriage-wheel `for which Letters Patent of theUnited States were gated'tbwltobert W. McClelland, February 8, 1870, No. 99,691, and

l reissued April 4, 1871, No. 4,322, for` the benefit of said Robert WrMcGlelland and John McGreery, sole owners thereof.l The wheel, as patented` byjsaid McClelland, consistedin the combination of raised center dod ged spokes s through or between thespokes, as hereinafter set forth.

In the drawing, A represents the hub; B B, the dodged spokes; and G (l, the metal bands `applied to thehub soas to bear against the raised centena on bothlsides, and to support each spoke on one side, as shown, and as described in theformer patent above referred to. `The hub, measured diametrically through the raised center,is about as large Va-s ordinary hubs;` but the `ends are cut away, as

" clearly represented in Fig. 5, and the rings are appliedl to strengthen it and to support the spokes laterally, so that the wheel is re-` duced in size, rendered neat and handsome in appearance, and made exceedingly strong and durable. The rings or bands C C are con- "nected together by metal bolts or rivets c e,

` which pass through or between the spokes or `spoke-tenons, and also through thesolid wood a of the hub. For the purpose ot' enabling the rings to prevent the possibility of the chipping or splitting out of any part 'of the raised center77 as the wood grows dry with age, I make the inner faces of the bands slightly conical, as shown in Fig. 2, or I provide them with projecting lips or iianges m m, as seen iu Figs. 3 and 4, which bear upon the surface of the raised center between alternate spokes, but do not reach in fark enough to come in contact with the side of the spoke. Either method of construction willhold the wood perfectly secure in position, -even though it should crackwith a-ge or exposure to the weather.

The advantages of the combination of the four elements herein described, viz., the raised center, dodged spokes, metal bands, and bolts connecting them, are of the most important character. In the rst place, the raised een ter gives a larger bearing to the tenons, and, being a solid part of the hub itself through which the bolts pass, holds the bolts, and by means of them, the rings or bands firmly in place, preventing any tendency in those parts to slip around the hub. Secondly, the dodging of the spokes obviates the dishing ot the wheels, prevents the mortises' from coming in line and nearly cutting the hub in two, and interposes on each side of every spoke a solid block of wood forming part of the hub, which supports the tenons and prevents them from breaking away the narrow tongue of wood where the mortises are in line. Thirdly, the iron bands support the spokes and the wood center laterally and bind the wood `center down so that it cannot chip up or split off; at the same time they strengthen the hub, prevent it from cracking or splitting, and enable its ends to be greatly reduced in size and improved in appearance. Fourthly, the bolts connect the bands and keep them -in place. It is impossible'for the bands to turn on the hub while the bolts are in, becausethe latter pass through the wood of the hub and cannot be moved. Besides, when the bolts pass through the enlarged part of the spokes, as shown, they hold the spokes from longitudinal displacement. y

The wood center, bands, and bolts form a clamp, which fastens the spokes as in a vise,

ter, dodged spokes, metal bands, and bolts or rivets that connect the metal hands and pass through or between the spokes and through the solid wood of the hub, substantially es herein described. A

JOHN MCCREERY.

Witnesses N. K. vELLsWomH, E. A. ELLSWORTH.

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