US593279A - Spring-mattress - Google Patents

Description

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G. W. MURRAY. SPRING MATTRESS.

Patented Nov. 9,1897.

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G. W. MURRAY.

SPRING MATTRESS.

No. 593,279. Patented Nov. 9, 1897.

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GEORGE W. MURRAY, OF MINNEAPOLIS, MINNESOTA.

SPRING-MATTRESS.

SPECIFICATION forming part of Letters EPatent No. 593,279, dated November 9, 1897. Application filed November 11, 1895. Serial No. 568,545. (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. MURRAY, of the city of Minneapoliacounty of I-Ienne pin, State of Minnesota, have invented certain new and useful Improvements in Spring- Mattresses, of which the following is a specification.

My invention relates to springmattresses, and particularly to that class of mattresses in which the mattress comprises abase, coilsprings arranged thereon, and a flexible top of wire fabric laid and secured upon the tops of the springs, said top being otherwise unsupported.

The object of my invention is to provide a spring-mattress of, an all-metalconstruction; further, one which will be of extremely light weight and yet of more than usual strength and durability; and a further and particular object of my invention is to provide a mattress of which every part is open and easily accessible and wherein there will be no parts of sufficient width to afford a resting-place for dust or dirt. Further, I have in view the cheapening of the cost of spring-mattresses, particularly as regards the means of finishing the edges of the fabric forming the top of the mattress, the means of securing the top upon the coils, and the means of anchoring the coils upon the base; and it is a further object of my invention to provide convenient means for suspending the mattress between the rails of a bedstead, and particularly in iron and brass bedsteads.

To these ends my invention consists generally in a spring-mattress of the construction and combination of parts, all as hereinafter described, and particularly pointed out in the claims.

The invention will be more readily understood by reference to the accompanying drawings, forming part of this specification, and in which Figure l is a plan view of a spring-mattress embodying my invention, portions thereof being removed for the clearer illustration of other parts. Fig. 2 is a longitudinal section thereof on the line 00 m. Fig. 3 is a similar section on the line y y of Fig. 1. Fig. eis an enlarged detail view, which with Fig. 5, a plan view thereof, illustrates the manner of attaching the fabric to the tops of the coil-springs. Fig. 6 is an enlarged detail view showing the finish of the raw edge of the fabric. Fig. '7 is a detail sectional view showing one of the hooks by which the mattress is suspended from or attached to the bed-rail. Fig. 8 is a transverse sectional view of a mattress and the opposite bed-rail, showing the form of slats which are sometimes employed as a support for the mattress. Fig. 9 is a sectional detail of the end of the slat and the wire hook. Fig. 10 is a plan view thereof. Figs. 11 and 12 are plan and sectional detail views of the corner finish of the mattress-top.

The base of the mattress is entirely of iron or steel, and with the exception of the end bars 2, which are angle-irons, the parts making up the base are of thin flat iron arranged edgewise upon the plane of the base. Side bars or strips 3 of this material join the angle-irons, and these side strips or bars are preferably continued around the ends of the mattress and formed into bufiers 4, the ends 5 of the strips being riveted to the vertical parts of the angle-iron. These bufiers project out into line with the top of the mattress and protect the same when the mattress is stood on end. Transverse bars 6 extend between the side bars 3 and have their ends 7 turned or bracketed and secured by rivets 8 to the bars 3. bar or iron 2 and the adjacent crossbar 6 at each end of the mattress is filled by crossbraces 7, formed of the same material as the side and cross bars. The engaging parts of these braces and the parts thereof engaging the bars 2 and 6 are riveted thereto, so that the same serve to brace and stiffen the base.

To prevent the buckling of the intermediate bars 6, I insert short tie-bars 8 between them, these bars being of the same material and preferably arranged in lines upon opposite sides of the mattress. The middle spaces 9 of the frame or base are provided with diagonal bases or ties 10, similar to those at the end, and to prevent diagonal racking of the frame when it is stood upon its side I further strengthen the same by a strip or strips 11 of the flat-bar iron, arranging this strip horizontally with reference to its width and providing crimps 12 therein and whereby The space between each angle it engages each of the cross-bars. The upper edges of the bars which make up this base are so thin that dust will not lodge and remain thereon. The mattress is therefore particularly cleanly.

Any desired number of the coiled or spiral springs 13 are erected upon the base. At the foot of each coil is an eye or loop 14, and a rivet or short bolt passing through this and through the bar fastens the coil securely thereon. The pressure upon the coil is not, however, carried by this rivet or bolt. Instead the first coil or turn 15 is made to lie upon the top of the bar whereto the coil is fastened. The large upper turn 16 of each coil terminates in a backwardly-turned loop 17, and each of these loops has a vertical crimp 18, for the purpose hereinafter defined. The only variation from this crimped loop is in the end coils 13, where complete curls are provided at] the upper end of each coil, and rivets 13 are employed to fasten the same to the fabric top;

The top of the mattress is made of a piece of woven-wire fabric somewhat larger than the base. The coils of the fabric extend longitudinally and one or more wires or rods 19 are passed through the edge or selvage coils of the fabric. At the ends or raw edges of the piece of fabric there are two or more such wires or rods 20, and the ends of the longitudinal and transverse wires or rods 19 and 20 are concealed and fastened between the corner-plates 21, two of which are provided at each corner for this purpose and as a fin ish for the corners of the fabric. The detail Figs. 11 and 12 fully illustrate these plates. The upper plate 21 has a depending lip or flange 21, which conceals the edge of the fabric and the wires between the plates. The lower plate is also concealed thereby, and the plates are firmly fastened and bound upon the intervening parts by rivets 21 which pass through both plates. Vithout the plates it is most difficult to finish the corners of the mattress-top. At the ends the piece of fabric is flattened, as best shown in Fig. 6, and the wires are passed down beneath the outer wire or rod 20, thence upward around and over the inner rod 20, and the ends of the wires are bent upwardly between the two wires or rods 20, so that they are practically concealed by those parts of the wire extending across the top of the two rods 20. The rivets 13", which fasten the end coils 13', pass through this end finish of the top. Of all the other coils 13 the upper ends or the hooks, as they may be termed, upon the coils are passed into the fabric, so that the coils are thereby prevented from shifting transversely. An opposite movement of the coilsand fabric is prevented by tie-wires 21, which pass through the fabric beneath the top thereof and through the crimps in the tops of the coil 13, which parts are pressed upward and into the fabric to be above the tie-wires. The tie-wires have their ends fastened upon the side wires 19.

These tie-wires also prevent the spreading or collapsing of the fabric which is laid loosely upon the springs.

Owing to the use of the thin bars in the base this mattress is particularly easy to suspend between the rails of the bedstead, especially those of an iron bedstead. For this purpose I provide a number of wire loops or double hooks 24, the hooks 25 and 26 of which are bent in the same direction, the first being adapted to engage the lower edges of the angle-iron bed-rail 27, while the other is adapted to receive the side bars of the mattress. In place of these simple hooks or hangers I may employ a number of thin slats 28 and suspend these from the bed-rail by hooks 29, similar to those above described. The lower ends of these hooks are simply enlarged and the end passed upwardly through asmall hole 30, provided in the end of the slat, while the outer part 31 of the hook or hanger is confined within a saw-cut 37, made vertically in the end of the slat.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- 1. In a spring-mattress, the combination. of the base, comprising a series of thin metal bars arranged on edge, as described, with springs arranged upon said base, said springs having their lower ends fastened upon the sides of said bars and having 4 their lower turns or coils resting upon the upper edges of said bars, the upper ends of said springs terminating in loops having vertical crimps. a top ofwire fabric into themeshes of which said loops are pressed, and the wires passing transversely throughand beneath the crimped portions of said loops, whereby the fabric and loops or tops of the springs are secured, substantially as described.

2. In a spring-mattress, the combination. with a suitable base, of springs arranged thereon, a mattress-top composing a wire fabric. several wires arranged longitudinally in the edge coils of said fabric, a suitable finish for the raw edges of said fabric, and finishingplates provided upon the corners of the fabric covering the ends of the wires of the fabric and the ends of said edge wires, substantially as described.

3. In a spring-mattress, the combination, with the base, of springs arranged thereon, the top of flexible wire fabric arranged upon the tops of said springs, means for finishing the corners of said fabric, transverse wires arranged in the ends of the fabric, said fabric flattened at the ends and the outer wires thereof being carried about the ends concealed between said transverse wires, as and for the purpose specified.

1. In a spring-mattress, the combination, with the base, of springs arranged thereon, the top of flexible-wire fabric arranged upon the tops of said springs, transverse wires arranged in the ends of the fabric, said fabric flattened at the ends and the outer wires IIO thereof being carried about the ends concealed between said transverse wires, and upper and lower plates provided at each corner of the fabric, and means securing the same,whereby the ends of said transverse wires and the corners of the fabric are finished and concealed, substantially as described.

5. A finish for the raW edge of a wovenwire fabric, comprisingwires or rods arranged transversely in the edge of the fabric, the edge of the fabric being flattened and the ends of the Wires being carried around said transverse Wires or rods, the ends of the fab-, ric Wires being protected between said transverse wires or rods,substantia1ly as described.

6. A base for aspring-mattress, comprising a frame of longitudinal and transverse flat iron bars arranged on edge, in combination, with braces arranged between the transverse bars, and a horizontally-arranged flat metal bar 11 having vertical crimps 12 embracing the several transverse bars, and whereby wrecking of the frame is prevented, substantially as described.

7. A base for spring-mattresses, comprising longitudinal side bars and transverse bars, said side bars being continued beyond the ends of the frame to form the buffers described, and all of said bars being of flat iron arranged upon edge, substantially as described.

8. The combination, in a spring-mattress, of a base comprising a series of thin metal bars arranged on edge, as described, with springs erected upon said base, said springs having their lower ends anchored upon the sides of said bars and having their lower turns or coils resting upon the upper edges of said bars, the upper end of each spring having vertical crimps, and a Wire-fabric top secured thereto by tie-Wires engaging said crirnps, substantially as described.

In testimony whereof I have hereunto set my hand this 1st day of November, A. D. 1895.

GEORGE lV. MURRAY.

In presence of C. G. HAWLEY, M. E. GooLEY.

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