US2110065A - Spring assembly for cushions and mattresses - Google Patents

Description

March 1, 1938. HAGER 2,110,065

SPRING ASSEMBLY FOR CUSHIONS AND MATTRESSES Filed Nov. 2, 1936 Patented Mar. 1, 1938 SPRING ASSEMBLY FOR CUSHIONS AND MATTRESSES Henry F. Hager, Trenton, N. J.

Application November 2, 1936, Serial No. 108,877

1 Claim.

My invention relates to a spring assembly for cushions and mattresses.

More particularly my invention contemplates a novel connection between the springs of an 5 assembly which when incorporated will provide an assembly having uniform hinge action on all four sides of its coils, prevent marginal distortion of the assembly when subjected to weight without interfering with essential spring action; permit the use of spring coils of different gauges in the same assembly when heavier spring coils are desirable in the center spring rows or at the margin of the assembly; permit the use of higher spring coils through the center of a cushion assembly and thereby reduce the amount of filling material generally used in the production of the cushion; provide a connection which can be united with adjacent spring coils by unskilled labor employing a suitable hand tool and thereby eliminate the use of machines for interconnecting the spring coils of the assembly; and enable the spring coils, helicals, and link elements of the structure to be shipped separately in bulk for assembly at destination and thereby 25 effect material saving in shipping cost.

In the drawing chosen to illustrate my invention the scope whereof is set forth in the appended claims:

Figure 1 is a fragmentary plan view of a spring assembly partly in section and embodying my invention;

Figure 2, a section on the line 22 of Figure 1;

Figure 3, an enlarged scale section on the line 33 of Figure 1; and

Figure 4, a perspective view of the link which connects adjacent springs of the assembly.

Referring to the drawing the assembly embodying my invention is shown as comprising a plurality of rows of coil springs A. As the to structure of the assembly at each end of the coil springs is identical only that at one end of said springs will be described in detail. Each spring A has a substantially circular end coil it provided with a plurality of notches ll spaced apart L5 circumferentially substantially ninety degrees as clearly shown in Figure 1. Helical springs 12 are threaded in the marginal notches l 5 along each side of the assembly in a manner well known to those skilled in the art. In addition to the 0 marginal spring connection between certain coil springs A as afforded by the helicals it I provide a novel connection between each coil spring of the assembly and all coil springs adjacent thereto. Such connection is indicated generally 5 at B and includes a link l3, through which the end coils it of a pair of adjacent springs are engaged. The ends of the link I?- are adapted to normally seat in opposite notches ll of respective end coils ill and are yieldingly held in related notches it by a helical spring [4 surrounding the link it and acting against its related end coils It), as will be clearly understood from the drawing.

It will be obvious that the structure of the connection just described is such that the link l3 provides a rigid stop limiting separating movement of the coils in the direction of the link and at the same time provides universal pivotal connections between the link and its related end coils til, the spring It operating to yieldingly resist the universal pivotal movements occurring between the link and the end coils M. It will also be further apparent that the coil connection afforded by the link l3 and spring is will readily adapt itself for use in spring assemblies where it is desired to incorporate two or more difierent gauges or weight of coils A in the center rows or on the edges of the assembly.

Furthermore, the connection enables cushion assemblies to employ higher center coils and thereby reduce the amount of filling material now generally used. In addition the incorporation of my connection in the manner described and shown produces an assembly having a uniform spring action on all four sides of the coils and which will not become marginally distorted.

To simplify the incorporation of my improved connection in producing the assembly I form the link l3 from a structural strand so as to provide a closed end 55 and then form the other end of the link by bending the terminal portions of the structural strand inwardly to form hook portions 25 and ii as shown in Figure 4. By this construction the incorporation of the connection can be effected by unskilled labor and without the use of machines by first engaging one of the end coils within the link by forcing the link longitudinally with the end coil between the hook terminals. When the hook portions have passed the end coil the link is turned into a plane at right angles to the end coil and positioned to dispose its closed end against the end coil. The spring M is then engaged over the link and compressed with a suitable hand tool until the free ends of the hook portions are exposed. The adjacent end coil ill is then forced between the hook portions l6 and I1 to a position beyond their free ends inwardly of the link. When this position of the end coil is reached it is allowed to move to its normal position in a plane at right angles to the plane of the link. The spring is then released and its expansion force will yieldingly seat the end coils l0 against the closed link end l5 and the base of the hook portions I6 and H, with the link ends disposed in respective notches H.

The fact that the incorporation of the connections B in the structure can be efficiently and rapidly effected by unskilled labor without resort to machines, enables the coils, helicals and connections to be shipped in bulk and assembled at destination, thereby effecting a material saving in cost of shipment by eliminating expensive crating and the utilization of lower freight rates than are obtainable when the same parts are shipped in assembly.

I claim:

In a spring assembly for upholstery and mattresses, a pair of coil springs, opposed outwardly extending notch formations included in corresponding end coils of the springs, a link having its ends engaged in the notches of. said formations respectively, and. a helical spring surrounding the link and receiving in its ends respectively the outwardly extending notch formations.

' HENRY F. HAGER.

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