US1207992A - Vehicle-spring. - Google Patents

Description

F. S. OWEN.

VEHICLE SPRING.

APPLICATION FlLED APR. 4. 191a.

LQUKQQQO Patented Dec. 12, 1916.

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of Letters fiatentl The present invention relates to cftttiii new and useful improvements in the construction of elliptic springs, and has for its object to provide a device of this character in which the superposed leaves are mounted and assembled in such a manner as to obtain a maximum amount of strength and resiliency.

Further objects of the invention are to provide an elliptic spring which is comparatively simple and inexpensive in its construc tion, which makes provision for holding the superposed leaves securely against lateral displacement without the use of shackles, which utilizes the middle portions of the superposed leaves, as well as the extremities of the leaves, for the obtaining of resiliency, and which can be used in the same manner as an ordinary elliptic spring.

With these and other objects in view, the invention consists in certain novel combinations and arrangements of the parts as will more fully appear as the description proceeds, the novel features thereof being pointed out in the appended claims.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a side elevation of a simple form of elliptic spring constructed in accordance with the invention. Fig. 2 is a top plan view of the same. Fig. 3 is a transverse sectional view on the line 33 of Fig. 1. Fig. 4: is a top plan view of the flared end of one of the upper leaves before bending edge portions thereof downwardly to provide side flanges for engaging the next lower leaf. Fig. 5 is a side elevation of the flared end of the leaf, as shown by Fig. 4, bringing out the taper in thickness which preferably accompanics the flare in width.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawing by the same reference characters.

Forthepurpose of illustration theinventiofi is shown as embodied in a simple elliptiejs'pping, of whichea'clilialf is formed of tw'o sliiperposed leaves, altho1igh it willbe obvious" that an desired number of superester and graded" leaves" can beus'ed in ij lsiin 1 as ns. p nd isf p the ldatPwhich' the'spring is designed to carry. ...T a numer s eSig fPQ h9 m in leaves of the spring, said leavesbeing oppositely bowed in the usual manner,

and being connected at their extremities by.

the conventional pivot bolts 2. A shorter leaf 3 is fitted upon each of the master leaves 1, the ends of the shorter leaves being preferably pointed, as indicated at 3*. It will also beobserved that the end portions of the shorter leaves are gradually flared in width, said flare in width being preferably accompanied by a gradual taper in thickness, as is indicated quite clearly by Figs. 4: and 5. The edge portions of the flared ends of the shorter spring strips are bent at right angles to the plane of the strips, thereby providing side flanges 4 which embrace the leaves 1 and prevent lateral displacement of the ends of the shorter leaves. Under some circumstances the extreme edges of the flanges 4: may be returned around the leaves 1, as indicated at 4*. This would not interfere in any manner with the sliding movements of the superposed leaves upon each other as the spring flexes, but would make gaping of the springs impossible. With these side flanges 4 it is not necessary to employ any special shackles for holding the leaves of the spring together, and these flanges serve to wardly, thereby causing the resiliency of the metal at the middle of the spring leaves to be utilized in absorbing the shocks and jars, as well as the resiliency of the ends of the leaves. Ordinarily, the middle portions of the leaves are practically dead and add little or nothing to the yielding qualities of the sprin although with the present construction t e metal at the middle of the leaves is FatentedDec. f2, X

brought into action as Well as that at the ends of the leaves. In this manner increased strength and resiliency is obtained,

without increasing the cost of the spring.

Having thus described the invention, What I claim as new and desire to secure by Let Copies of this patent may be obtained for posed leaves of graded lengths, the ends of the shorter leaves being simultaneously tapered. in thickness and flared in Width, the 0 projecting flared edges being extended laterally to provide side flanges which embrace the longer leaves, and the side flanges terminating in inwardly extending lips, the

lips preventing gaping of the ends of the 25 leaves, While the side flanges prevent relative lateral displacement ofthe leaves.

:In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. e I FELIX S. OWEN.

i. VVitnesses-i GEO; M. HAYS, V A. C. WANCK.

five cents eacli, by addressing the Commissioner of Patents Washington, I). 0.

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