US78191A - Timer atkinson - Google Patents

Description

'0.115. DANIELS.

` l Car Spring.`

No. 78,191. Pamed May 26, 1868,

n hiess e s f D. G. DANIELS, OF CINCINNATI; OHIO, 4ASSIGI\I()R TO -HIMSELF AND F. MOR- l TIMER ATKINSON, OF CHICAGO, ILLINOIS.

Lean-s Parentlvo. 78,191, dans May 2c, isos.

@La tlgetrle referrer in im 1pts teitets tant mit uniting part nf ttt sante.

TO ALL WHOM IT MAY CONCERN: y

Be it known tliat' I, D. G. DANIELS, of Cincinnati, in the county of Hamilton, and State of Ohio, havcf invented a new'and improved Spring; and I do hereby/declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in which- Figure lis a diametrical section through one of the springs.

Figure 2 is atop View ofthe spring.

Figure 3 is a. diametrical section of the spring when partly compressed.

' Figure 4 is an end View of the spring 4 Figures 5 and 6 show the manner of piling a number of the improved springs.`

Similar letters of reference indicate corresponding parts in the several figures.

This'invention relates to a new and improved method of manufacturing springs for railroad-cars, and other i purposes, whereby a very simple yand elicient spring can be made, which will retain its elastic properties unimpaired for a considerable length of time, and which will occupy a very small space, and admit of being employed Y for draw-bars, box-springs, and for other like purposes.' Y

The nature of my invention consists in constructing a spring of two circular plates of steel, bent in the form of a segment of a cylinder, and put together, at right angles to each other, in such manner that the circumferential edges' of. such plates shall touch, and-thereby afford a continuous circular impingement, and a uniform distribution of resistance over the entire area of both plates, when they are subjected to pressure, as will be hereinafter described. I

To enable others skilled in the art to understand-my invention, I will describe its construction and operation.

In the accompanying drawings,"gs. 1, 2, 3, and 4, Ifhave represented the improved spring, separated from its gang or pile, and in figs. 5 and 6, I have shown the method of piling a number of the springs together.

Each spring is composed of two platesiof steel, A A, made exactly alike, and put together so that they bear or touch only at their circumferential edges. These two plates A are stamped out of a. sheet of steel or other suitable springy metal, and they are made of a circularl shape, and of equal diameter. They are then4 bent over the surface of a former, so as to give them the shape ofisegmernts of a cylinder.. i The plates thus produced are punched, so as to leave holes, a a, through their centres, iisuch holes are-required, after which they are tempered in the well-known manner of tempering springs. Bothplates being of an equal size, and having the same curvature, they can be iitted. together in the manner shown in the drawings, so that their outer! edges will impinge all around, and leave a space between the plates within these impinging edges.

Each plate A is bent in'a direction with-the length of the grain of the metal, so that when the plates are under compression, there will'be no tendency to split or impair the metal, and the lateral spreading and retraction of one ofthe plates will be at right vangles to such movement given to the other plate, when exposedto compression. Y z

I am aware that it is not uew'to make aspring of two circular dished plates, or plates which are the form of segments of asphere, put together so that their circumferential edges only touch. l Such plates cannot be "made nor used without injury to the bres of themetal, And I am also aware that an 'improvementhas been suggested upon the said dished springs, by corrugating the circular plates radially, or crimping their outer edges, which form,vit has been alleged, would prevent the splitting of the edges of the dislisby expansion. In the last-mentioned spring, it may be true that the edges of the disks will not split under compression, but itis obvious that the plates cannot be given the corrugated form without distorting and seriously injuring the bres of the metal. v l

By my invention, I am enabled to construct a spring of two circular plates, of uniform thickness of metal,

and of uniform elasticity, Without in the least impairing any of the fibres, or weakening any portion of the plates. I

i i i February, 1868.

These improved springs may be piled or put together, so as to form a, compound spring, composed of any required number of pairs of plates, as shown in gs. 5 and 6.

In fig. 5, e4 compound spring, es above mentioned, is shown, applied within s. bo'XLB, and kept in place by means of the central rod C. D is a.' follower,` which is holden in place within the'box, B, and prevented from being drawn out by means of e nut, g, upon the screw-threaded part ot' the rod C. Pressure upon the follower D will be received by all the springs, which will be Acompressed equally.

I do' not confine my invention to the special arrangement of the springs shown in iig. 5, as they may be arranged in different Ways, according to the purpose for which they are designed to serve; that is to say, while my invention is limited to the use ofV plates which are segments of a. cylinder, andvwhich are arranged upon one another so es to be at right vangles to each other, and bearv upon one another et every part of their margin equally, I do notlimt myself in the application of springs thus made, but shall apply them to car-bumpers or draw-heads, to cer-trucks, and, in fact, to all purposes where springs are useful'.

Having described my invention, what I claim as'neiv, and desire to secure ly Letters Patent, is

A spring, which is composed of plates A A, bent in the formof segments of e cylinder, and put together et right angles to cach other, substantially-os described.

Witness my hand in the metter of my application for u patent on an improved spring,'this third day of D. Gr'. DANIELS..

Witnesses:

J. A. CLINTON, H. TAYLOR.

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