US2515177A - Spring cushion for upholstered furniture - Google Patents

Description

A. M. BANK SPRING CUSHION FOR UPHOLSTERED FURNITURE Filed Jan 27, 1948 INVENTQR 5/50"! fl ank 1 W ATTORNEY Patented July 18, 1950 OFFICE SPRING CUSHION FOR UPHOLSTERED FURNITURE Albert M. Bank, Jersey City, N. J.

Application January 27, 1948, Serial No. 4,663

2 Claims. 1

This invention relates to spring cushions for upholstered furniture. It it particularly directed to a metal spring assembly, which is covered with padding and incorporated into a seat or back cushion for a sofa, chair, or like upholstered article of furniture.

An object of this invention is to provide a spring cushion of the character described, comprising top and bottom edge frames, rows of coil springs therebetween, the end convolution of each coil spring overlapping the end convolution of coil spring or springs adjacent thereto, and top and bottom wires transversely of said rows for interconnecting and clamping together the overlapping end convolutions of said springs, each wire having central integral portions projecting between a pair of overlapped convolutions and interconnected by a hook extending to one side and engaging beneath the underlapping convolution, and integral portions on opposite sides of the central hook portion, projecting between said convolutions but beyond the overlapping portions and interconnected by hooks extending in a direction opposite to the first hook and engaging beneath the underlapping convolution. and portions of the wire between said central hook and said pair of hooks, pressing down on the overlapped convolution, to clamp said convolutions together, whereby the end convolution of said springs are held against swivel movement, one relative to the other when weight is imposed on the cushion.

Another object of this invention is to provide a spring cushion of the character described, wherein the spring coils have overlapping end convolutions locked together against swivelling by looking or clamping wires which engage each pair of overlapping contacting convolutions, pressing them together, whereby said cushion will give more distributed support when weight is imposed thereon, and whereby the spring coils are locked and suspended between the locking wires.

Still another object of this invention is to provide an improved compact, strong and durable spring cushion of the character described, which shall be relatively inexpensive to manufacture, easy to assemble, comfortable in use, and yet practical and efflcient to a high degree.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combination of elements, and arrangement of parts, which will be exemplifled in the construction hereinafter described,

2 and of which the scope of invention will be indicated in the following claims.

In the accompanying drawings, in which is shown various illustrative embodiments of this invention,

Fig. 1 is a top plan view of a spring cushion embodying the invention;

Fig. 2 is a side elevational view thereof;

Fig. 3 is an enlarged view illustrating the locking of a pair of overlapping convolutions by a looking or clamping wire;

Fig. 4 is a side elevational view of the structure of Fig. 3;

Fig. 5 is a cross-sectional view taken on line 5-5 of Fig. 3;

Fig. 6 is a cross-sectional view taken on line 6-6 of Fig. 3, and

Fig. 7 is a cross-sectional view taken on line 1-1 of Fig. 3.

Referring now in detail to the drawing, in designates a spring cushion embodying the invention. The same comprises top and bottom opposed, parallel edge frames H, which may be made of wire. Each frame may be made of a single piece of wire bent to desired rectangular shape with curved corners and with ends overlapping and clamped together by clips l2. The frames II are interconnected by a spring assembly i3.

Said spring assembly l3 comprises a plurality of parallel, spaced, aligned rows of coil springs II, which may be of the hour-glass shaped type, well known in the art. Thus, there are end rows i5 of springs, and intermediate rows l6 of springs. End convolutions of the coil Springs are attached to the end frames i I by clips i8 and i9, as shown in the drawing.

The end convolutions of the coil springs are locked and clamped together by parallel locking or clamping wires 2|. Said end convolutions are overlapping, as will be described hereinafter. Since the locking constructions at the top and bottom of the cushion are similar and symmetrically disposed, only the construction of the top will be described.

Referring therefore only to the top of the cushion, the end convolution of the spring Ila at the left end of each row, designated by numeral 25, underlaps the end convolution 26 of the next adjacent spring b. Said convolution 26, however, underlaps the end convolution 21 of the next adjacent spring Mb. Said end convolution 21 underlaps the end convolution 28 of the end spring Na in said row. Thus, each of the convolutions 26 and 21 of the intermediate springs overlaps the end convolution of a spring on one side thereof, and underlaps the and convolution of a spring at the opposite side theretions 25, 28, which will illustrate the construction at each overlap. The wire 28 has wire portions 40 contacting the overlapping convolution 26 at the points where it crosses the underlapping convolution 25. Extending from the inner ends of wire portions 40 are downwardly extending spaced parallel wire portions 6! which are interconnected by a hook 42 which extends to the right and engages beneath the underlapping convolution 25. It will be noted that the wire portions 4| project downwardly between the overlapped wire portions 25, 26 and the book 42 is disposed in a vertical plane through the axes of the springs in one row. Extending downwardly from the outer ends of wire portions 49 are wire portions 43 located just beyond the crossing portions of the wires 25, 28.

Extending from wire portions 43 in a direction opposite to the direction of hook 42 are hooks 44 which engage beneath the underlapping convolution 25. Extending upwardly fromthe hooks 44 are wire portions 45 parallel to wire portions 43 and extending from the wire portions 45 in opposite directions are wire portions 46 aligned with the wire portions 49.

It will now be understood that the overlapping convolution 26 is pressed down at two points, to wit, the points where the overlapping convolution 2S crosses the underlapping convolution 25. Furthermore, the underlapping convolution is pressed upwardly at a center point and at two points beyond the place where the convolutions cross. With such construction, the convolutions 25, 26 are hooked and maintained in level condition.

Furthermore, the convolutions 25 and 26 cannot be pulled apart because of the wire portions 4| which project down through and between the overlapping portions. Also the convolutions 25, 26 cannot be moved toward each other because of engagement with the wire portions 43 which engage said convolutions just beyond the places where they cross so that said wire portions 43 are disposed between said convolutions and prevent said convolutions from being moved further toward each other in a direction to increase the overlap.

It will now be understood that the overlap cannot be increased or decreased due to the conotherwise clipped or attached thereto. e interlocking construction disclosed in Figs. 8 to 7 is the same at each place where the convolutions overlap and the same construction stated above is used at the top of the spring as at the bottom.

The hooks s2 and i l exert lever action to restrain swivelling action between adjacent springs. The wires 2iare preferably made of spring steel, so that the hooks resiliently bias the end convolutions of the springs into level position.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made or the above invention, and as various changes might be made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative not in a limiting sense.

Having thus described my invention, I oi as new and desire to protect by Letters Patent:

1. In a spring cushion comprising opposite edge frames and springs interconnecting said edge frames, a pair of adjacent springs having end convolutions overlapping one another, means to lock said overlapped convolutions comprising a member having aligned portions contacting theoverlapped convolution, portions extending downwardly from the inner ends of said aligned portions between the crossing portions of said convolutions and interconnected by a hook extending to one side and engaging beneath. the underlapped convolution and portions ex-' tending downwardly from the outer ends of said aligned portions at points just beyond where said convolutions cross and hooks extending from said last mentioned downwardly extending portions in a direction opposite to the first hook and engaging said underlapping convolution at points beyond where said convolutions cross.

2. In a spring cushion, a pair of adjacent coil springs having convolutions overlapping one another, means to lock said overlapping convolutions comprising a member having aligned portions contactin one of the overlapping convolustruction described hereinabove. Furthermore, I

convolutions 25 and 26 cannot be moved sideways, one relative to the other in directions parallel to wire 2 I, because such movement would be prevented by wire portions 43 as well as 4|.

The convolutions 25 and 28 are restrained against swivelling movement, so that if a weight is imposed upon the spring assembly, the weight will be distributed throughout the cushion to get a better distribution of support for weight imposed on the cushion;

The ends of the looking or clamping wires 28 may be coiled around edge frames as at III, or

tions, portions extending between the crossing portions of said convolutions and interconnected by a hook extending to one side and engaging with the other overlapping convolution and portions extending from the outer ends of said aligned portions at points just beyond where said convolutions cross and hooks extending therefrom in a direction opposite to the first hook and engaging said other overlapp w convolution at points beyond where said convolutions cross.

ALBERT M. BANK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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