US25246A

US25246A - Carriage-spring

Info

Publication number: US25246A
Authority: US
Publication date: 1859-08-30
Anticipated expiration: 1876-08-30

Description

H. S. CLARK.

Carriage-Spring.

No. 25,246. Patented Aug 30, 1859.

IHIMWr O MPEIERS. PHOTO-LIIMOGRAPNER. wAsmNngN. D C

STATES ATENT OFFICE.

H. S. CLARK, OF WYALUSING, PENNSYLVANIA.

CARRIAGE- SPRING.

Specification of Letters Patent No. 25,246, dated August 30, 1859.

To all 'whom it may concern:

Be it known that I, H. S. CLARK, of Tyalusing, in the county of Bradford and State of Pennsylvania, have invented a new and Improved Carriage-Spring; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, represents a side elevation of a spring constructed according to my improvement. Fig. 2, is a plan or top view of the same.

Similar letters of reference indicate cor-' responding parts in the two figures.

To enable others skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A, A, represent two elliptical springs constructed in the usual manner by placing two or more leaves of spring steel one on the top of the other and connecting the same by means of clamps, bolts, rivets, or any other sui'table means, and the leaves are taken of different length in order to give the spring the necessary resistance on the center and still leave the same sufficient elasticity by decreasing it-s resistance toward the ends. I use only two leaves, a., and b, for each of my springs, and attached to the inner leaves Z), Z), are two additional leaves B, B, bent into the shape of a W, and connected to the springs in the center. These leaves B, B, join with their ends at c, and a plate D, is placed over the oint in order to strengthen that part of the spring, and this plate is fastened to the spring by means of bolts or rivets. The

outer ends of the W-shaped leaves extend beyond the inner or bed leaves of the springs A, A, and a spring constructed out 0f two leaves a, b, on each side with the additional W-shaped leaves in the center is just as strong as a spring with three leaves and connected in the usual manner by ears at the ends, and it is not only very troublesome to make these ears and connect the springs in this way, but a spring constructed according to my invention has more life with the same strength, as the additional W-shaped leaves have some elasticity of their own, and they therefore increase the liveliness of the whole spring without impairing its strength.

These springs are particularly adapted for carriages and light vehicles, as they can be constructed lighter and cheaper than ordinary springs, and as by reason of their greater elasticity they render the vehicle much more easy for both traveler and horse. By adding more leaves, however, these springs are equally adapted for. heavy vehicles.

I do not claim, broadly, the invention of the W-shaped spring; but

Having thus described my invention, I claim, and desire to secure by Letters Patent- The arrangement and combination of the W-shaped leaves B, B, with the elliptical springs A, A, as herein shown and described, so that the extremities of the leaves B, B, will approach each other and will be secured at the centers o-f the springs A, A, as specified.

H. S. CLARK.

lVitnesses:

HENRY GAYLORD, I. R. WELLES.