US135885A

US135885A - Improvement in spring bed-bottoms

Info

Publication number: US135885A
Authority: US
Publication date: 1873-02-18
Anticipated expiration: 1890-02-18

Description

I. BUSH.

Spring Bed-Bottoms,

. Patented Feb. 18,1873.

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i ivrrnn STA ES PATENT OFFICE.

ISAAC Bose, or INDIANOLA, IOWA, Assrenor. or ONE-HALF HIS RIGHT TO oHAnLEs MGKAY, or SAME PLACE.

IMPROVEMENT IN SPR' ING BED-BOTTO MS.

Specification forming part of Letters I'atent No. 135,885, dated February 18, 1873.

To all whom it may concern:

Be it known that I, ISAAC Bnsn, of Indianola, in the county of Warrenand State of Iowa, have invented an Adjustable Spring Bed-Bottom, of whiclrthe following is a specitication:

The object of my invention is to provide a spring bed-bottom that will conform to the shape of the body, and that can be readily adjusted to elevate the head, and also to meet the unequal pressureon the sides occasioned by two persons of different weight. It consists in attaching graduated blocks on the under side and head end, and in a sliding bar carrying coil-springs, all as hereinafter fully set forth. l

Figure let my drawing is a miniature perspective view illustrating the manner of constructing and operating my adjustable springbed. Y

A A represent a bedstead which may vary in form. B B is a strip of board, attached in a common way on the inside of the side rails to strengthen the rails and-to support the bedbottom. 0 0 is a'movable cross-piece resting upon the supports B B. D D is a similar crosspiece permanently attached to the bed-bottom,

and forms a part thereof. Its ends also rest on the supports B B. E is a cross-piece framed in the blocks a a on the under"sides and near the headends of the pieces F F. F F are the longitudinal side pieces to which coil-springs are attached. 1 2 3 4: 5 6 represent a series of slats running crosswise, and secured and held npby the coil-springs attached to the pieces F F. Two flexible cords or straps are attached in a common way'to encircle the ends of the slats to keep them in position and to make them cooperate in bearing up the person or persons on the bed. Each slat is allowed independent play to such an extent that. it will alternately rise and sink to conform with the shape of the body resting thereon. a a are graduated blocks permanently attached to the I under sides and head ends of the side pieces F F, and afford a simple means of elevating the head and shoulders whenever desired. The movable cross-piece G (l is shown underneath the graduated block, and the head end of the bed-bottom elevated thereby. To lower it and make it level, simply slidethe crosspiece O (3 forward until it is free from the blocks a a. By a series of steps in the blocks,

Fig. 2 is a transverse section of the bed, and

illustrates the manner of adjusting the laterally-slidin g piece G G to meet unequal pressures and to keep the bed even.

The coil-springs are attached to the sliding piece G at intervals corresponding with the series of cross-slats 2 3 4 5 6, and press against the slats and aid in holding them up. When two persons of equal weight occupy the bed the sliding piece G should be in the center.

For persons of unequal weight it should. be

moved toward the side occupied by the heaviest person. A complete and simple means is thus provided for keeping the bed even and level. I fasten the base of the coil-springs to the pieces F F and G, by means of L- shaped staples, in such a manner that the end of the wire-coil will hook around one of the staples and clasp to it when there is any weight or pressure upon thespring to expand the coil.

The end of the wire at the apex of the spring is coiled around a screw and the screw driven into the slat; but I do not confine niyself to any particular mode of fastening the coilsprings.

Any common method of fastening may be adopted to accomplish the purposes contemplated by my invention.

I am aware that spring bed-bottoms with slats running lengthwise and also crosswise have been made to rest upon coil-springs. 1 claim, however, that the mode of elevating the head and adjusting the bed for persons of un equal weight is a new and valuable improvement.

Claim.

I claim as my invention- .In the construction of a spring-bed, the com- I bination of the graduated blocks a a and the sliding piece G carrying a series of coil-sprin gs, substantially as described, and for the purposes