US28619A - Richard vose - Google Patents

Description

R. vosnn' GAR SPRING.

No. 28,619 Patented June .5, 1860.

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RICHARD VOSE, OF NEW YORK, N. Y.

CAR-SPRING. I

Specification forming part of Letters Patent No. 28,619, dated June 5, 1860; Reissued August 6,

To all whom it may concern:

Be it known that I, RICHARD VosE, of the city, county, and State of New York, have invented a new and Improved Car-Spring; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

Figure l, is a side view of my improved car-spring; Fig. 2, a longitudinal section; and Fig. 8, an end view of the same.

My improved car-spring is composed of centrally perforated flat-sided disks (Z, (Z, (Z, of vulcanized india rubber, or gutta percha, combined with each other by means of the caps a, b, the rings 0, 0, and the central bear ings e, 6, represented in the drawings.

It will be perceived that the inelastic portions (2 Z), 0, e, of my improved car spring are of such a shape that, when no pressure is exerted upon the spring, only the angles at the outer and inner peripheries of the disks (Z, (Z, are in contact with the said inelastic portions of the car-spring; and that when pressure is exerted upon the spring, its elastic disks (Z, (Z, are permitted to yield freely at their outer and inner peripheries, while their flat sides are received into flaring air cavities; which arrangement causes the pressure to be exerted upon the said elastic disks, through the medium of the air which is confined within the flaring cavities above and below the same; thereby giving to 'my said car-spring the advantages of the elastic properties of air and india rubber acting jointly the one upon the other.

The peculiar shape of the inelastic portions a, b, c, e, of my improved car-spring, by which flaring cavities are formed above and below the elastic disks (Z, (Z, at the same time that air spaces are left within the inner peripheries of said disks, is clearly shown in Fig. 2, of the drawings :to wit: Each of the caps a, and b, has a flaring annular groove formed Within its inner face which outwardly terminates in a lip or flange that incloses the elastic disk (Z, at that end of the car spring. The cross-section of each ring 0, has the form of an outwardly thickening wedge whose sides outwardly terminate in vertically projecting lips or flanges which correspond in shape and diameter with the above mentioned flanges at the outer periphery of the grooves in the inner faces of the caps a, and Z). The form of each central bearing 6, is that of a short tube or thimble, which has a tapering flange radiating from the central portion of its outer periphery; the said flange corresponding in shape with that of the tapering and inwardly projecting portion of each ring 0, which is placed immediately opposite to the said flange. The bearing surfaces which are placed opposite to the flat faces of each of the elastic disks (Z, (Z, being of a concave shape, at the same time that the outer and inner peripheries of said disks are left unconfined, save at their angles, the compressing action exerted upon the said elastic disks (Z, (Z, while it will prevent any bursting expansion of the outer periphery of the flat faces of each of the elastic disks, will also distribute the compressing force more uniformly throughout the bodies of the said disks than has ever before been accomplished by any other arrangement of india rubber disks with inelastic bearings. The result of which new arrangement is a more uniformly elastic and a more durable car-spring than has ever before been produced.

What I claim as my invention and desire to secure by Letters Patent, is

The disks (Z, (Z, (Z, the caps a, b, the rings 0, c, and the central bearings c, a, when 0011- structed and arranged substantially in the manner herein set forth.

RICHARD VOSE.

Witnesses:

Z. O. ROBBINS, GRENVILLE LEWIS.

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