US85518A - evans - Google Patents

Description

' l 2 Sheets-Sheet 1. J. W. EVANS.

. y Caf-SpringV Box. No. 85,518. Paten'fed Jan. 5, 1869.

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Car-Spring Box. No. 85,518, y Patented 1an. 5, 1859.

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JAMES WQEVAN-S, OF NEW YORK, N. Y

Lette/rs Patent No. 85,518, dated .Taima/ry 5, 1869.

'mPRovnD cm2-SPRING Box .'l'he Schedule referred to in these Letters Patent and -making part ofthe same.

Be a known that 1, JAMES W. EVANS, 0f the' city of New York, county and-State of New York, have' invented certain new and useful Improvements in Oar- Spring Boxes; and I do hereby declare that the following is a full, clear, and exact description ofthe construction and operationof the same, reference being had to the annexed drawings, and the letters of reference` -a. cluster or nest, an iron box has been used, comprising a number of cylindrical cells, one for each spring. But it is evident that in such a box, if made of a single piece, either the depth of the cells must be less than the length of the springs, or there must be a 'plunger provided, to press upon the top ofthe springs,

and follow them into the cells. But these modes of constructing the spring-box are both objectionable, the first, because it leaves the springs without lateral-support at the upper end, and second, because the plungers increase the height of the box by at least their own length My invention obviates these objections.

It consists- First, in making the spring-box in two sections, lan upper and a lower section, each containing parts of the several cells, so arranged that whenthe upper section is placed over and upon the lower one, the portion of each cell in the upper section fomis, with. .its corresponding one in-the lower, a complete cell; and

Second, informing, of one piece of metal, the upper section, and the entire partition constituting the inner walls of the cells, when two or more rows of cells are used, by which device a strong and solid bearing is provided, independent'of the walls of the box, limiting the downward motion of the upper section, andv consequently limiting also the compression of the springs. This partition also serves to keep the'upper section vertically adjusted to the lower.

- To enable others skilled in the art to make and use my invention, l will proceed to describe its construction and opera-tion.

Figure 1 is a perspective view of the upper section of the box, removed from the lower section, and turned upside down.

Figure 2 is'a similar view of the lower section of the box, the top section being removed Figure 3 is a similar view of the entire box, the two sections being put together, containing spiral springs, in place in the cells, a portion of one side of the upper section, opposite the centre cell,'being cutaway, exposing to view the spring in said cell.

Figure 4 is a central vertical sectional view of the box, the two. sections being put together.

The box here shown is designed for six springs placed in two rows, of three each. Any number may be used, at the option of the manufacturer. vlhe partition B, constituting the entire-.inner walls of the two rows of cells, is cast solid with and formsa part' of the upper section. l

The sides opposite each cell O are curved outward, forming the outer portion of the walls ofthe cells. The other portion of the saine is formed ofthe said partition B, which is hollowed out opposite each cell,

as represented. This 'partition isoil a greater depth than the section of the box of which it `'ormsfa part, so that when the two sections are put together, the

said partition extends-down into the lower section, thus` forming the entire inner walls of the cells.

The projections aa, c c, d d, on the inside of the lower section, (fig.` 2,) coincide with the ends a a,'and

tlie projections cf'c, d' d. of the partition B, th-us com-Y pleting the circle of eachell, C and 0', D and D'.

The nppersecton is a little larger than the lower, allowing it to shut down over it, like the cover of a box, thus permitting it to 'rise and fall without uncovering the springs. 'n

The vertical length oi? vthe partition B is so proportioned tothe length of the springs,'and to the depth of the 'two sections of the box, that when the upper section is pressed downward, compressing the springs, the-lower end of said partition will strike against the bottoni ofthe lowersection,lbefore. the coils of the springs are brought together,'and before the top ofthe upper Vsection comes in contact with the upper surface of the rim of the-lower section. Both the walls of the -box and the springs themselves; are thus protected .would be liable to be broken.

The bottom of the lower section and the top of the upper one being solid iron plates, castwhole, with the 4sides' and ends ofeach, respectively, vform suitable seats and bearings of the several springs.

The two sections are held together by bolts, with nuts'tted into the bolt-holes f f', which extend through both sections.' `In the upper one the holes are made large enough to permit the heads of the bolts to pass down to the shoulders 71. it', (iig. 4.) On the outer face of the bottom oi' the-lower'section the bolt-holes are countersunk, i i', to admit the nuts-of the bolts.

It is evident that by this arrangement, while the bolts limit the upward motion ofthe upper section, and prevent its removal from the lower, they do not interfere with its rising and fallin g with the play of the springs.

e e are small projections en the top of the box, de signed to aid in retaining the box in its place when in use.

I have thus described what I regard as the best method of constructing a spring-box embodying' my invention; but I do not intend to be limited to the exact forni and arrangement of the several parts described, as, for example, to the number, kind, shape, or position of the bolts and bolt-holes, to the presence or absence ofthe projections e e', to the comparative depth or size of the two sections, or to the arrangement by which the upper section is made to shut over the lower` section. In these, and other matters of detail, the parts may be varied at the optionv of the manufacturer.

What I claim as my invention, and desire to secure by Letters Patent, is

A car-spring box, made in two sections, when each of said sections forms or contains a portion of each cell designed to hold the spring, substantially as described.

JAMES W. EVANS.

Witnesses:

J. P. FITCH, C. DINsMoRE.

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