US2689962A - Inner spring mattress - Google Patents

Description

p 23, 1954 E. H. HUTCHESON 6 INNER SPRING MATTRESS 2 Sheets-Sheet 1 Filed Oct. 29 1947 INVENTORZ EL Hfiumunsou ATTQEN BY p 8, 1954 E. H. HUTCHESON 2,689,962

INNER SPRING MATTRESS Filed Oct. 29. 1947 2 Sheets-Sheet 2 2 ii) I ".v

INVENI'OR:

EARL H.1'IUTCHE6ON. BY: ,f')

ATTORNEY.

Patented Sept. 28, 1954 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to an inner spring mattress or more particularly to a spring structure and novel covering therefor. Inner spring mattresses heretofore have been subject to excessive wear and failure due to improper means for connecting the springs together. Constructions heretofore employed impaired the spring quality of the mattresses and presented rough or uneven surfaces which tore and wore holes into the contacting textile fabric.

An object of my invention is to provide an inner spring mattress with coil springs flexibly connected together in sets of fours by means presenting a smooth, fiat supporting surface to the connecting textile fabric.

Another object of my invention is to provide means formed of a single piece of material for flexibly yet securely fastening the springs together in sets of four.

Another object of my invention is to provide an improved covering for the spring structure in an inner spring mattress.

Another object of my invention is to provide an inner spring mattress which is superior and durable in quality, simple and efficient in construction, and inexpensive and easy to manufacture.

All of the foregoing and other and further objects and advantages of my invention will be apparent from the following description taken in connection with the accompanying drawing in which like characters of reference designate corresponding parts throughout the several views, and wherein:

Fig. 1 is a fragmentary plan view of a spring structure embodying my invention.

Fig. 2 is a perspective view of one form of my novel clamp for holding the springs together, inverted and showing in part the blank from which the clamp is constructed.

Fig. 3 is a perspective view of a modified form of clamp, inverted and showing in part the blank from which the clamp is constructed.

Fig. 4 is an elevation of one of the coil springs I I.

Fig. 5 is a cross sectional view of a fragment of a mattress embodying my improved spring structure and showing the improved covering.

Fig. 6 is a fragmentary end view showing a mattress with my improved covering.

A fragmentary part of the spring structure of an innerspring mattress embodying my invention is shown in Fig. 1 in top plan view with certain of the coil springs ll flexibly joined to the edge rod l2 by simple wrap-around clamps l3. The basic feature of the invention is the integral clamp I 4, M for flexibly fastening the springs together in groups of four and presenting a smooth, flat supporting surface for the contacting textile fabric covering.

Each of the integral clamps l4, I4 is formed from a flat sheet orblank, of metal, plastic or other suitable material, in the general form of a right-angle cross having legs of equal length.

In the blank, each of the legs of the clamp I 4, I 4' terminates in a longitudinally extending tip l5 which is flanked on both sides by a somewhat shorter longitudinally extending brace 16, as seen in Fig. 2, or a laterally extending brace I 6', according to the modification shown in Fig. 3.

In the assembled structure, the braces 16 are bent longitudinally and turned downwardly at an angle of approximately 90 to the associated leg of the clamp, as at l! in Fig. 2, to form abutments for the coil of the spring. Similarly, the laterally extending braces l6 are folded laterally and turned downwardly at an angle of approximately 90 to the associated leg of the clamp, as at I8 in Fig. 3. The tips l5 are folded back, as at l9 in Figs. 2 and 3, to clamp onto the coil of the springs H securely but so as to permit ready flexing of the joint.

The flat sheet clamps employed as they are in my invention are superior to the use of wires and other clamps because my clamps connecting the springs in sets of fours substantially fill the quadrangle between the springs and present a board, smooth, uninterrupted supporting surface for the contacting, soft textile fabric. Thus the life of the fabric and the mattress is increased because there are no rough, narrow, upstanding or protruding, surfaces on my clamp. However, the arrangement of my clamps does not impair the resiliency of the springs, but the construction is such that the arrangement of the springs is permanently retained while each joint is entirely flexible and secure.

It will be obvious that the clamps of my invention may be applied to either the top or bottom coils of the springs or both, as desired. When applied to either the top or bottom coils only, conventional means are employed to secure the coils of the other end of the springs.

The spring structure is covered with fabric, as at 20, and then a layer of padding material, such as cotton batting 2|, is put on. An outer layer of cotton batting, or other suitable padding material 22, is held between the outer fabric covering material 23 and an intermediate layer of fabric 24. The outer covering 23 and the intermediate fabric 24 are stitched or otherwise fastened together at 25, 26 so as to form a roll edge. Also, the outer covering 23 and the intermediate fabric 24 are stitched or otherwise fastened together at spaced intervals along the sides, as at 21, to secure the padding in place and form a more attractive covering.

Having thus fully described my invention, I claim:

1. An inner spring mattress having a plurality of coil springs flexibly fastened together, a layer of fabric covering said springs, a plurality of layers of padding material covering said springs top and bottom, said layers of padding material being separated by an intermediate layer of fabric, and an outer layer of fabric covering the whole structure and fastened to said intermediate layer of fabric so as to form a roll edge for the mattress.

2. An :inner spring mattress having a plurrality of coil springs flex'iblyfastened together, a. :layer of fabric covering said springs, a plurality of layers of padding material positioned so that the innermost layer rests upon said fabric, an intermediate layer of fabric separating said layers of padding material, and an outer layer of fabric covering the whole structure and fastened to said intermediate layer of fabric in a plurality of places so as to form a roll edge for the mattress.

3. An inner spring mattress having a plurality of coil springs, a layer of fabric covering said springs, a layer of padding material adjacent said fabric, an intermediate layer of fabric covering said layer of padding material, another layer of padding material adjacent said intermediate layer of fabric, and an outer covering of fabric, 'said mattress being characterized by said outer covering of fabric being fastened to said intermediate layer of fabric so as to hold the padding material in place and to form :a :roll edge for the mattress.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 970,775 Young Sept. 20, 1910 2,018,773 Becker Oct. 29, 1935 2,089,301 'Schwartzman Aug. 10, 1937 2,208,826 Wolf July 23., 1940 2,454,220 Seeche Nov. 16, 1948 FOREIGN PATENTS Number Country Date 182,173 Great Britain June 23, 1922 501,928 Great Britain Mar. 8, 1939

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