US637200A - Cushion-tire. - Google Patents

Description

N0. 637,200. Patented Nov. l4, I899;

J. F. FININ.

CUSHION TIRE.

(Application filed Aug. 28, 1899.)

(No Model.)

INVENTOR.

IVITNESSES ATTORNEY.

ms nomus P515115 00.. mo'roum UNITED STATES I PATENT OFFICE.

JOHN F. FININ, OF P ITTSBURG, PENNSYLVANIA, ASSIGNOR TO ROBERT P.

' MCGHESNEY, OF SAME PLACE.

CUSHION-TIRE.

SPECIFIGATION forming part of Letters Patent No. 637,200, dated November 14, 1899.

I Application filed August 28, 1899. Serial No. 728,696. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN F.FININ, a citizen of the United States,residin g at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Cushion-Tires, of which the following is a specification.

This invention relates tocushion-tires, and

has for its object to provide a sensitive tire of simple and inexpensive construction and one possessing great durability.

The invention consists'in the novel structural features and combinations of parts hereinafter fully described and claimed, and illus- I 5 trated by the accompanying drawings, in

which Figure 1 is a side elevation of a portion of a tire embodying my improvement. Fig. 2 is a plan view of one of the interior springs,

the outer band being removed. Fig. 3 is a cross-sectional view. Fig. 4 is a modification.

A designates the inner band of the tire, adapted for securing to a wheel-rim in any suitable manner, and Bis the outer band, con

centric with and-spaced from band A and carrying rubber tread O. Arranged between the bands is a series ofsubstantially S-shaped springs formed of wire. My preferred form and arrangement of each of these springs are 0 as follows: The extremities D of the wire lie parallel on inner band A and are formed with eyes D to receive securing-rivets E. Said wire extremities merge into the parallel coils F, preferably of three convolutions each, with the adjacent coil ends apart, as shown. From these coils the wire extends in parallel lines in the same general direction as extremities D, but above the same, as indicated at G, to form the outer or upper coils H, which are in 40 line transverse the tire and lie quite close together, with the elongated narrow loop K emerging from the upper sides of adjacent ends of these coils and extending backwardly over and above portions G and secured to outer band B by rivet L. I do not restrict myself to this exact form and arrangement of spring, as obviously it may be varied in many particulars without departing from the spirit or scope of the invention. If desired, inner 5o band A may be omitted and the bases of the springs secured directly to rim M, as in. Fig. i. The extremities of the interposed springs are preferably deflected from the bands,such deflection beginning as near as is practicable to the securing-points, so that the full flexure of the springs may be had. The springs are sensitive to radial pressure and cooperate with resilient outer band B to form an effective cushion. Transversely the interposed springs are double from end to end and effectively resist lateral strains.

Having thus fully described my invention, what I claim as new, and desire to secure by'. Letters Patent, is

1. The combination of the inner band oi rim, the outer resilient band, and a series of springs between and secured directly to the bands, each spring having a transversely broad bearing on the inner band and a narrow central bearing on the outer resilient band, whereby the outer band, while firmly sustained, is sensitive to lateral strains, suby stantially as shown and described.

2. The combination of the inner band or rim, the outer resilient band, and a series of springs between said bands, each spring,

formed of spring-wire, being of double formation and consisting of the separated extremities secured to the inner band, alining coils F standing wide apart, alining coils H standing close together, and central loop K secured to the outer band, substantially as shown and described.

3. An improved tire comprising an outer resilient band, an inner band spaced from the outer band, and the substantially S-shaped springs interposed between the bands, each -spring being formed of a single piece of wire,

with the separated extremities thereof secured to the inner band and emerging into the separated inner coils, the wire extending from said inner coils to form the outer coils lying closely. together, and the wire emerging from said outer coils to form the loop for securing tothe outer resilient band, substan tially as shown and described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnessg s.

JOHN F. FININ.

Witnesses:

J. M. Nnssrr, (J. A. WILLIAMS.

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