US1208720A - Leaf-spring. - Google Patents

Description

W. T. PERRY.

LEAF SPRING. r

APPLICATION FILED IULn 29 1916.

1,208,720. Patented De@.12,1916.

TTUR/VEY,

State of California,

Er faire.

WILLIAM T. PERRY, OF FRESNO, CALIFORNIA, ASSIGNOR OF ONE- HALF TO ARTHUR EVERETT JEANS, 0F FRESNO COUNTY, CALIFORNIA.

LEAF-SPRING.

Speccation of Letters Patent.

Patented Dec. 12, 1916.

To all whom t may concern p Be it known that I, WILLIAM a citizen of the United States, and

of the city of Fresno,

a resident county of Fresno, and have invented a new and useful Improvement in Leaf-Springs, of which the following is a specification.

My invention relates to an improvement in leaf .springs for vehicles whereby in compression and expansion the leaves will readily slide over each other without unnecessary rubbing or friction, making the springs more elastic, and preventing the breaking of the leaves.

springs now in use without taking the springs apart, and can be cheaply constructed.

I attain these and other objects hereinafter referred to by means of my invention described in the following specification and shown on the accompanying drawing in which- Figure l is an end sectional view of two leaves of a spring and a front view of the device. Fig. 2 is a perspective view of a combination ball and roller bearing. Fig. 3 is a perspective view' of the jaws of a clamp, used to hold the ball and roller in position in the spring. Fig. 4 shows different lengths of screw bolts to use in clamping the device to the springs of diiferent widths.

In said drawing A is a combination ball roller bearing. It consists of a plurality of balls 2, through the center of which the rod 3 passes. The rod and the balls can be formed integral, or of separate pieces. Rod 3 extends beyond the end balls to form the ends of an axis.

B are the jaws of the clamp, andare made in pairs. Each jaw consists of aplate 8 with a bent down portion 6 at one end thereof, and at the opposite end an extension 45 4 bent up at approximately right angles to plate 8, and in the opposite direction to bent down portion 6.

l0 is a slot in extension 4 slightly wider than the diameter of rod 3.

5 is a horizontal bead on the inside of extension 4.

12 is a rib to strengthen extension 4, and is preferably formed integral therewith. 7 are holes in the bent down portion. C., C1 and C2 .are different lengths of bolts PERRY,

My device can be readily installed on leaf either of which can pass through holes 7 for the purpose of clamping the jaws B together.

H and H1 are the two leaves of a spring.

In assembling this device the leaves H and H1 should be separated suliiciently to permit the ball roller to pass between the leaves. Then the jaws B are placed one on each side of the spring in such relation to the ball roller A that each end of the rod 3 is within a slot l0. One of bolts C, C1 or C2 is then passed through holes 7, and the jaws are clamped to the spring. The clamp is formed so the partof the jaw above the roller does not bind on the upper leaf but acts as guides for the spring, so the upper leaf can work freely within the clamp. FVhen the leaves of the spring are moved lengthwise on each other, the ball roller bears the weight of the leaf above and the leaf moves with a minimum of friction. The balls should be of slightly larger diameter than the rod. The combination of a plurality of balls rigidly attached to a rod when used in the manner I have described give the same results as an ordinary ball bearing carried between the leaves of the springs.

I claim as my invention, and ask for Letters Patent upon:

l. In combination with a leaf spring, a rod having a plurality of balls attached thereto inserted between the` leaves of the spring, and means for loosely holding said balls in said position, substantially as described and for the purposes set forth.

2. In a spring, the combination of spring leaves, a plurality of balls attached to a rod inserted between said leaves, and means for holding said rod between the leaves consisting of a pair of jaws having an opening therein to receive the end of said rod, and means for clamping the jaws to one leaf of the spring, substantially as described and for the purposes set forth.

3. In a spring, the combination of a plurality of leaves, a plurality of rods having balls of slightly larger diameter than the diameter of the rods rigidly attached thereto, the center of rod being on a line With a diameter of the balls, and means for holding said rods and balls between the leaves of said spring, substantially as described and for the purposes set forth.

4. In a spring, the combination of a plurality of leaves, a rod having balls of slightly larger diameter than the diameter of the rod Y Vrigidly attached to the rod with a diameter of the balls on common line with the center `ofthe rod, placed between each two con- Vceive an end of the rod, all substantially as described.

5. In a spring, the combination of a plurality of leaves, a plurality of balls having a rod passed through the center thereof, the rod to be the approximate length of the `width of one of the leaves, and the balls to Vbe of slightlyVV larger .diameter than the thickness ofthe rod, a retainer for such rod Copies of Vmeans for fastening said clamp to aleaf of consisting of a memberhavingtwo-upwardV projections with holes thereinslightl-ylarger 'n' 2a clainping said members to a Ylealof the spring,

than the diameter of the rod and means forV all substantially as described. 6. In a lea` spring, a plurality of balls attached to a common axis, a'clamp with the spring, said clamp having extensions be'- yond the 'leaf to which it is clamped, and openings in said extensions to receive the ends of the axis, substantially as described.

wiLLIAMrT. PERRY. Y f Witnesses: Y

J. Gr. NioHoLs, H. S. LEYDIG.

this patent may be obtained forl ve cents each, ny addressing the Coinmssionerpf Patents Washington, D. C. Y Y

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