US1369325A - Spring-mattress - Google Patents

Description

91.( QAM/y0( n. COOPER SSSS H.

A S P R I N G M A T T R E S S.

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UNITEo STATES.

.RUDOLPH COOlPEIVt/SMITBI, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR OF TO'ABRAHAM BUCHE, 0F PHILADELPHIA, PENN SYLVANIA.;

Paritair OFFICE.

ONE-HALF 'SPRING-MATTRESS.

Specification of Letters .Patent Pdtented F919, 22, 1921 Application med Marcil 1, 1920. serial No. 362,204.

To @ZZ whom t may concern.' f A.

Be it known that I, RUDOLPH COOPER@ snrrrfr, a citizen of the United States, and resident of the city of Montreal, in the Province of Quebec and Dominion of Can'- ada, have invented certa-in' newand useful Improvements in Spring- Mattresses, Vof which the following is a full, clear, and exact description. This invention relates to improvements in spring mattresses, and the object of the invention is to provide a mattress so conf structed that the entire widththereof contributes tothe support of a person lying on any part of the mattress.

A further object is to provide a spring `which may be easily and cheaply manufactured.

Another object is to provide a spring free from projections which wear out an upholstered mattress placed thereon.

'Ihe device consists briefly of a rectangular frame of any suitable form having head and foot rails between which a fabric according to this invention is stretched. The fabric comprises angularly ydisposed s rands interwoven and extending between the head and foot rails, to which they are attached by means of helical springs. The

ends of certain of these angularly disposedv ,strands are attached to heavier strands or marginal members extending between and at right angles to the head and foot rails and supported therefrom yby springs.

In the drawings which illustrate the 1nventiongvFigure 1 is a partial plan view of av spring mattress or bed thisinvention.

Fig. 2 is-a sideelevation of the device. Referring more particularly tothe drawings, 11 designates the head and foot rails bottom according to of a frame which are held apart by side rails 12. The bed bottom fabric comprises a plurality of angularly disposed strands 13. which extend between the head and foot rails or between one of these rails and a marginal member 14, which is supported between the head and foot rails andfat right angles thereto by springs 15. The strands 13 may be wires or thin flat bands of metal or may be of any other suitable material and are preferably but not necessarily interwoven, as shown in Fig. 1. The ends of each strand are connected to the frame or to the frame and marginal members 14 by helil formed inthe rails 11, so that themanu-v fact'uring costV of the device is kept as low as possible. The degreev of Vangularity of the strands Vwith respect to the framev members maybe Valtered as desired, but it has been found that for all practical purposes, the best results are obtained when the strands extend parallel with lines extending from approximately the center of one end rail to the corners of the other rail (in a double bed mattress). At the corners of the mattress wherevery little weight is to be supported, the strands may extend in one direction only, that is, `the short crossing strands may be omitted, as shownin Fig. 1. It will beunderstood, however, that the corners may be filled in in the same manner as the center of the structure. In order to facilitate` the attachment ofthe strands and their springs to the marginal members 14, the inner edges of these members may be provided with notches 18 having their sides 19 parallel with the strands and their ends 20 transverse of the strands. These notches receive the springs as shown and avoid all possibility of the springs rubbing on the edge of the-member 14, as would be the case if it were not notched.

n win be Obvious from Fig. 1 that the weight of a person lying on any part of thisA n sustained to a certain extent by every intersecting strand and as these intersecting strands intersect strands parallel with the first, theloadV is distributed over substantially the whole structure. The angular disposition of the strands Aavoids the local sagging of the structure, such as is commonly found in fabrics having longitudinal extending members. This elimination of sagging is due to the fact that all the sup-V porting springs receive substantially equal load.

While the strands are preferably interwovento avoid rattling, the invention is not limited to such interweaving. It will be obvious that while the strands have been l shown connected directly by the springs to the end rails, transverse bars may be interposed betweenthe strand ends and springs. Itwill also be obvious that the marginall members 14 may be attached directly to the end rails without the interposition of the ,springs l5, thus producing a rigid, rectanmarginal members reslliently `supported be-VH- ed to the same point of the endrails.

gularv frame. By altering the j angle at which the strands lie to the endv rails, oppositely inclined strands may be connected to the same point ofthe marginal members in the same manner'in which they are connect- Having thus described I claim is ;--l 3 y v *y 1. Ina bed bottom fabric, end rails, continuous strands extending between said rails at Vpredetermined angles thereto, flexible' my invention, what tween the extremities of the end rails, saidv marginal members being notched at adj acent edges, and further strands parallel with vthe first named extending between an l ginal members resiliently connected atthe ends to said end rails, and strands extending inl straight lines between' the two end rails and between the marginal members and the`end rails.

In witness whereof, vI have hereuntoY set my hand.

RUDOLPH ooorERsMrrH. i

Y 'Y i 2:53

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