US326096A - Bed-bottom - Google Patents

Description

UNITED STATES PATENT OFF CE. I

cHARLns BIGEoN, or CINCINNATI, OHIO.

BED-BOTTOM.

SPECIFICATION forming part of Letters Patent No. 326,096, dated SeptemberiS, 1885.

Application filed December 12, 1884. (No model.)

To all w/wmI itmay concern.- it

Be it known that I, OnARL-nsBIGEoN, a citizen of the United States, residing at Cincinnati, Ohio, have invented new and useful Improvements in Bed-Bottoms, of which the following is a specification.

My invention relates to spring bed-bottoms of the class wherein an elastic web is formed on or attached to a frame. It consists, first, in the improved construction of the elastic web, the same being made up of a number of flat detachable wire springs bent in curved form, with projecting ends suit-able for attaching to the curved loops oftwo adjacent springs, a connected series of which thus forms a continuous surface, and, secondly, in the provision and arrangement of flexible supportingbraces mounted on the lower frame-work, and extending diagonally upward to points on the outer railing or frame, upon and between the sides of which is stretched the elastic web, all as more fully hereinafter pointed out.

Mechanism illustrating my improvement is shown in the accompanying drawings, in

which- Figure 1 is a perspective view of a bedframe with braces and side railing, the web removed; Fig. 2, a plan of a portion of weband side and end rail; Fig. 3, a detail view of the curved spring; Fig. 4, a detail View illustrating one method of attaching the flexible braces on the lower frame, and Fig. 5 a form of flexible brace and its attachment.

In the drawings, A designates the end parts of the lower frame, B the side pieces, and A the cross-piece, one or more of which may be used.

cent springs; and with these curved springs or loops I build up an elastic web, W, in which the projecting ends of each loop are hooked to the curved part of a loop at either.

side. Each loop receives through its crossed ends a closing pull resisted by the elasticity of the curve, and transmits the strain to the adjacent hook ends of other loops, the whole forming a strong and elastic surface.

In forming the web I may interpose at convenient intervals lines of plain rings r, for convenience in detaching the webin strips for ready package, and I preferably attach the hook ends h h to rings upon the end and side I rails for a similar purpose.

I provide the foot of the braces a with coiled springs on central supporting-cores fastened to the frame, the tendency of which to uncoil throws the free ends of the braces toward the vertical and resists depression toward the horizontal positions; or I may form the braces themselves of flexible. material sufficiently stiff to resist the thrust when the bed is cocupied, and bent in a curve upward, in which Thus constructed, the bed-bottom operates as follows: The elastic web or mat, being stretched between the side and end rails, forms a flat surface, which, upon receiving a weight, yields or stretches, due to the closing up of the curved loops. As the web stretches it is allowed to sink, compressing or winding up the springs at the foot of the diagonal braces, or bending the bracestoward a straight line in case the braces in Fig. 5 are used, since it carries their free ends downward, and the distribution of strain is thus made in the most perfect and natural manner.

The advantages of this invention may be enumerated as, first, superior elasticity of surface; second, strength and elasticity in the vertical direction; third, accessibility for cleaning and removing insects and the prevention of the same; fourth, evenness of surface, the ease with which all the springs may be removed or replaced when required for dismounting or setting up a bed, all of which featuresare here met with in a marked degree.

I am aware that a wire fabric for bed-bottoms has been heretofore used, consisting of wire loops hooked together; but such loops were of different forms, and not, therefore, interchangeable as between themselves; and, moreover, although embracing loops approximately similar in form to mine, the same were hung together in such manner as to involve a tensional strain instead of a compressional strain, as in my improvement; nor is such rm ric equally elastic in both directions, as in my improvement.

I am also aware that a frame composed of. separate end and side pieces has been used in spring bed-bottoms; but in such case the opposite rails were held by ties crossing each other and secured together, and the whole supported upon spiral springs acting vertically. Such construction, as is obvious, could not be used with a fabric elastic in both directions.

I claim and desire to secure by Letters Patent of the United States 1. The elastic mat for bed-bottoms, composed of the detachable and interchangeable wire loops S, formed and hung together as shown, the free arms of one connecting with the circles of adjacent loops, and joined along one or more medial lines and to the containing frames with plain rings or liuks,substantially as set forth.

2. In aspring bed-bottom, the combination of a permanent base-frame, an upper frame for the wire fabric, consisting of separate and independently-movable end and side rails, and spring-braces secured at one end to the rail of the upper frame and passing diagonally beneath and across the fabric to the lower frame,

so that the depression ofthe upper frame tends to thrust the corresponding upper rails apart, substantially as set forth.

3. The combination, in aspring bed-bottom, ofa wire fabric elastic in both directions,asupporting-frame consisting of separate side and end pieces,apermanentbase-frame, andspringbraces supporting the end and side pieces of the mat-frame from opposite or intermediate braces of the base-frame, substantially as set forth.

4. A spring bed-bottom composed of a lower frame, A A B B, supporting the foot of the braces a, the flexible braces a extending thence diagonally upward and clasped to the rails R above, the rails R, and the elastic fabric WV.

stretched between the rails R, all constructed my hand in the presence of two subscribing.

witnesses.

CHARLES BIGEON.

Witnesses:

R. M. HOSEA, L. M. HOSEA.

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