US1325431A - Selp-ltjbbicating spring - Google Patents

Description

I. N. WISE.

S'LLF LUBRICATING SPRING.'

@Pme/111011 man FEB.11,1919. 1,825,413 1 Patented Dec. 16, 1919.

WMM/wonen wat m To all whom it may concern? zen of the United States, residing at Yazoo' UNITED sTATEs PATENT oEEIoE.

ISAAC N. WISE, 0F YAZOO CITY, MISSISSIPPI.

i SELF-LUBRICATING SPRING.

Be it known that I, IsAAo N. W'Isn, a citi- City, in the county of Yazoo and State of Mississippi, have invented new and usefulv Improvements in Self-Lubricatin Springs, of which the followingis a speci cation.

This invention relates to certain novel and useful improvements in self lubricating springs and has particular application to a self lubricating leaf spring structure for vehiclesf'- f l In "carrying out the resent invention it is my purpose to-provi e a self lubricating leaf spring structure wherein the individual leaves will be so formed that a supply of oil or other lubricant may traverse the spring structure between the individual leaves thereof thereby enabling the structure to be thoroughly and efficiently lubricated at all times. V

Another object of my invention is the provision of a self lubricating structure of the class described which will embrace the desired features of simplicity, eficiency and durability, which may be manufactured' at a small cost and which will be self lubricating under all conditions. v

With the above recited objects in view and others of a similar nature, the invention resides in the construction, combination and arrangement of parts, set forth in and falling within the scope of the appended claim.

In the accompanying drawing:-

Figure 1 is a view in side elevation of the upper section of a leaf spring structure constructed in accordance with my present invention. p

Fig. 2-is a bottom plan view of one of the leaves.

Fig. 3 is a longitudinal sectional vie through the spring structure.

In the present instance, I have shown my invention as applied to the upper section of a leaf spring structure and in this connection it will be understood that my invention is equally applicable to the lower section of the spring structure and is, in fact, capable of use in any type of leaf spring structure.l

Referring now to the drawing. in detail, the numeral 1 designates the individual leaves of* the upper section of a leaf spring structure, 'As usual, these leaves are placed Speeieation of Letters Patent. Patented Dec, 16, 1919, Application mea February 11, 1919. serial No. 276,288.

one upon' the other, in face to face contact and secured together by means of clips 2 that hold the leaves against accidental relative movement laterally. In accordance with my invention the lower side of each leaf l of the spring is formed witha longitudinal channel 3 which terminates short of the respective ends of the leaf. Each leaf is also formed with openings 4 suitably spaced apart and opening onto the lower side of the next adjacent leaf above the particular leaf. The openings 4 inthe top leaf of the spring carry oil cups awhich may be threaded or otherwise secured in the respective openings. The bottom leaf of the spring structure is not formed with openings 4; but

--dividual leaves of the spring will be thoroughly and efficiently lubricated so that when excessive strain is placed thereon the' leaves may have the necessary relative movementto one another to take up the shock or f rebound. At, the same time, 'my improved self lubricating spring structure will outlive the usual spring structure for the reason that the individual leaves are thoroughly lubricated under all conditions thereby preventing rusting of the leaves and consequent deterioriation thereof.

I claim A self lubricating spring'A structure comprising a plurality of superposed leaves, the

bottom leaf being continuous and each of the remaining leaves being-.provided in its underside with a single central longitudinal groove terminating short of the ends of theleaf, each leaf being further provided in the groove with a series of circular holes, the topmost leaf havin g only two holes,lthe holes in the successive leaves being in staggered relation, and oil cups threaded into the holes in the topmost leaf.

In testimony whereof I aiiix my signature.

ISAAC N, WISE.

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