US624341A - Spring bed-bottom - Google Patents

Description

No. 624,34l.` yPavfentd May 2, |899.

F. KARR.

SPRING BED BOTTOM.

(Application led June 29, 1898.)

(No Model.)

Inventor.

` Francis Karr Hy wf 'M7 Attorney.

xs persas co., wnoraunqo.. WASHINGTON, D. c;

UNITED STATES PATENT OFFICEC FRANCIS KARR, OF HOLLAND, MICHIGAN, ASSIGNOR TO BENJAMIN KARR,

' OF CLEVELAND, OHIO.

SPRING BED-BOTTOM.

SPEG'IFICATION forming part of Letters Patent 624,341, dated May 2, 1899.

Application filed J une Z9, 1 89 8.

To all whom it may concern:

Be it known that I, FRANCIS-KABE, a citizen of the United States, residing at Holland, in the county of Ottawa and Stateof Michigan, have invented certain new and useful Improvements in Spring Bed-Bottoms, of which the following is a specification.

My invention relates to improvements in bed-bottoms constructed with a series of spiral vertical springs known in the market as single and double deck springs; and its objects are, first, to avert the danger of the springs leaning or sagging sidewise; second, to prevent the several coils of the springs from clashing and making an unpleasant grinding noise, and, third, to so extend the upper coil of each spring that it will engage and support the next succeeding spring. I attain theseA objects by the mechanism illustrated in the accompanying drawings, in which- Figure l is a plan of a spring bed-bottom embodying the several features of my invention. Fig. 2 is an end elevation of the same; and Fig. 3 is a plan of a detached spring, showing the manner of interlocking the springs.

Similar letters refer to similar parts throughout the several views.

In the accompanying drawings, A represents the top or border of the spring, and A represents the spring.

My invention consists first and primarily of the form and application of thewishboneshaped braces B. These braces are of a single piece of wire bent at the point b to form a spring, the sides of which diverge to a point somewhat beyond the longitudinal center, when they again approach each other slightly to the ends, forming two springs substantially the shape laterally of a Wishbone.. The bow portion at b' is secured to the surface structure of the springs in the body of the bed-bottom, and the ends are secured to the borders of an opposite surface structure, as at Z9', being spread some distance apart, so that any pressure on the top of the springs will cause the curved sides of the braces to diverge at the centers, as indicated by the dotted lines in Fig. 1, so that they are continually eective without distorting the bed-bottom, and as some of the braces incline in one direction form the arm a', which passes across the end and others in an opposite direction and they incline from every side of the spring bed-bottom it can be readily seen that the action of the spiral springs must be vertical andwith no inclination to bend or throw over to the right or the left. This feature is the direct result of the peculiar form of the brace, and as the action of the springsis thus rendered absolutely vert-ical it is impossible for the coils of the springs to scrape by each other, and by this means the usual unpleasantv grating noise so common in springs of this class after they have been used for a time is wholly averted and the life of the spring is prolonged. I further facilitate the action of these braces by the peculiar construction and bracing of the spiral springs. This feature of my invention is more fully indicated in Fig. 3 and is as follows: The knot of the end or face coil ct of a spiral spring is formed by bending back around the second coil a3, forming a loop or bow a4, and its prolonged end projecting thence out to or, face coil of the next adjacent spring and terminates in a hook a", that passes' under the beginning of the prolongation of the' arm ct' of the next adjacent spring' and hooks back into its similar knot. By this means I have a continuous series of ties and locks crosswise of the bed-bottom, while with the ordinary tie-rods C, which stand at right angles therewith, I have a thorough bracing of the extremities of the springs, aud the braces B, hereinbefore described, connecting the top coil of one set of springs with the bottom coil, substantially, of another set of springs, and extending from the one to the other diagonally, the bedbotton1 is so thoroughly braced that lopping and friction of the spiral springs are wholly prevented.

I prefer that the broad ends of the braces B be carried by and attached to an end or face coil of a spiral spring, as at b"in Fig. l, as by this means the brace is held in position to render chiefly a lateral springing motion of its 'curved sides when weight is placed upon the bed-that is to say, the pressing dow/irak the curved sides of the braces diverge laterally, as indicated by the dotted lines, instead of bending chiefly up or down, and thus ex-y ercise a more even and continued exertion on the springs to hold them to place and With less danger of causing hu mpy and uneven places in the bed than Would be possible With the springs so arranged that the spring of the braces B would act either up or down, besides avoiding uncertain or erratic action of the braces that would cause noise from interference thereof with the interior coils of the springs or with the surface of the structure.

Having thus fully described my invention, What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In combination with a spiral-spring bedbottom,braces having outwardly-curved sides connected to and passing diagonally from one surface to the other so that vertical compression of the springs will cause the curved sides .of the braces to diverge, substantially as and for the purpose set forth.

2. In combination with a spiral-spring bedbottom, lateral braces having outwardly curved sides, said braces connected to and passing from one surface of the bed-bottom diagonally so that vertical compression of the springs Will cause the curved sides of the braces to diverge, and spiral springs having their end coils prolonged to extend across the surface of, and be secured to the end coils of adjacent springs to form surface braces over said adjacent springs, substantially as and for the purpose set forth.

FRANCIS KARR.

In presence otL ITHIEL J. CILLEY, WALTER E. MOORE.

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