US15126A - Carriage-spring - Google Patents

Description

' J. U. FIESTIER.

Carriage-Spring.

No; 15,126. Patented June 17, 1856.

STATES PATENT OFFICE.

JOHN U. FIESTER, OF WINCHESTER, OHIO.

CARRIAGE-SPRING.

Specification of Letters Patent No. 15,126, dated June 17, 1856.

To all whom it may concern:

Be it known that I, JOHN U. FIESTER, of Winchester, in the county of Guernsey and State of Ohio, have invented certain new and useful Improvements in Carriage- Springs; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of referenoe marked thereon.

The drawing is a side view of my invention attached to a carriage.

The nature of my invention consists in forming an elastic scroll twisted eleptical curved spring for carriages of steel or (of wood for common purposes) being much lighter and cheaper than the elastic springs now in use.

In the construction of my improvement I have presented the same attached to a light buggy in which A, the wheels; B, the connecting bar; C, the braces; E, the seat; F, the elastic scroll twisted eleptical curved spring; a, the parts of the springs which elongate; Z), the scroll twisted parts of the springs fitting together in somewhat of a screw form, and at which point they slide past each other in their operation.

In the construction of my coiled scroll twisted spring, I construct it of steel, of equal thickness and strength. I then give the spring a scroll twist by which means I am able to give strength to it without increase of weight in the material.

In the operation of my improvement having made the springs as before described, (or I may find it practicable to make the springs out of wood for common purposes), I then fasten the ends of the springs to a piece of wood, and this piece of wood or iron bar is firmly fastened to the braces G, C, by means of bolts or clamps, and the seat is attached to the springs by means of screws; the springs are also made right and left to each other, so that they will support each other by reason of the bevels or screw form which they possess, constantly bracing each other, as the weight is made to bear on them, and thereby preventing too great a lateral motion. I find that the elasticity is equal to that of any spring in use. It will be further seen that the ends of the springs are made stationary, not allowing them to slide; consequently when the weight is applied to the seat the springs are made to yield at the ends a causing the springs at the scroll or bevel parts 6, where they pass each other to yield; it will be seen that at this point they have a screw action in part, and as they are pressed together they slide past each other, and yet retaining their proper position, and allowing the elasticity of the springs to extend to the entire length of the same, thus giving to the springs a vertical and lateral action, which is continued until the springs are pressed together horizontally.

Having thus fully describedthe construction and. operation of my invention, what I claim as new and desire to secure by Letters Patent is:

Forming elastic twisted springs with an elliptical curve for the purpose of giving to the same greater strength and elasticity, and also a lateral and vertical motion as herein set forth.

JOHN U. FIESTER.

Witnesses:

T. G. CLAYTON, J. C. CLAYTON.

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