US1918399A - Spring assembly - Google Patents

Description

July 18, 1933.;

c. D. KARR SPRING ASSEMBLY Filed Feb. 15, 1930 Patented July 18, 1933 v UNITED STATES CHARLES D. KARE, OF HOLLAND, MICHIGAN SPRING ASSEMBLY Application filed February 15, 1930. Serial No. 428,594.

This inventionrelates to spring assemblies and more particularly to assemblies in which a plurality of spiral springs are employed' The principal object of the invention is the provision of new and improved means for Connecting the spirals of a spring assembly together.

Another object of the invention is the provision of a new and improved spring assembly composed of a plurality of spiral springs having overlapping portions together with novel means for holding said portions in lapped position.

A further object of the invention is the provision of a new and improved spring assembly that is inexpensive. to manufacture, simple in construction and eificient in use.

Other and further objects and advanta es of the invention will appear from the ollowing description taken in connection with the accompanying drawing, in which Fig. 1 is a plan-view of a portion of a spring assembly embodying the invention; and

i Fig. 2 is, a section on line 22 of Fig. 1.

In the constructionof spring assemblies for use in box springs, mattresses, cushions and the like it is desirable that the springs be connected to ether in such a manner that they will have exibility of movement in all directions and be noiseless in use and at the same time be provided with means for preventing rotation of the individual springs.

These functions are performed by the arrangement of spring assembly that will now be described.

Referring now to the drawing, the spring assembly comprises a plurality of spiral sprin s 11 and 12 preferably arranged in rows both longitudinall and transversely of the assembly. Each 0 the springs is provided with a plurality of distorted portions in their terminal coils that are adapted to be connected together and the springs held in assembled relation by aplurality of clip members.

In the form of the device selected to illustrate one embodiment of the invention the spirals 11 are provided with outwardly exsaid springs. The loops 13 preferably extend radially outwardly and are substantially in the 'planes of said coils. The terminal coils 15 of the springs 12 are provided with correspondin loops 16 which extend at an angle to the p anes of the coils.

For the purposeof description the portions of the structure shown in Fig. 2 toward'the top of the sheet will be referred to as the up-' per portion of the coil. The 100 s or offsets 16 extend upwardly as shown in .ig. 2 and at one side of said loop is a depression 17 extending below the plane of the terminal coil and a depression 18 at the other side of said 5 loop.

In assembling the device the spiral springs 11 and 12 are arranged alternately with the loops 13 lappled over the loops 16 of the springs 12, t

in the depressions 17 and 18 when the s rings are rocked. The 100 s are held in a ped. position by any suitab e means. In the f orm of the construction shown, clips 19 are employed for this purpose. These cli s are 7 formed from lengths of wire double back on themselves to form the loop portion 21. The loop portion 21 engages the loops 13 and 16 by passing upwardly beneath the loop 16 and between the two loops and over the so otal movement of the connected spring? and relaat the same time retain the parts in suc tion that there will be no clicking of those parts during use.

By means of this arrangement, the connection between the coils will permit the necessary flexing of the coils without the obj ectionable clicking or other metallic sounds so evident in the use of spring assemblies of the usual or well known construction.

e parts being so constructed" that the sides of the loops 13 will ride down 13 after the loop 21 has 85 tending loops 13 in the terminal coils 14 of The terminal coils of each spring may be duplicates whereby two types of s irals will be necessary, one provided with orizontal loops in its terminal coils, and the other with vertical loops in its terminal coils, but in practice it is preferable to have the terminal coil at one end of the spring provided with the distorted portions or horizontal loops 13 and the other terminal coil provided with the vertically arranged loops 16 whereby the spirals will all be alike, it being only necessary to reverse each alternate spring in assembling the springs.

While theconnections described are shown as being between the terminal coils of spiral springs, it is understood that this same arrangement may be used where two or more curved or circular wire units are to be con; nected together in such a manner as to provide a limited universal movement of the units with noiseless operation of the same.

I claim as my invention:

1. In a spring assembly, a plurality of: spiral springs arranged'in rows, the terminal coil of one of said springs being provided. with a radially extending loop and 'the cooperating adjacent spring beingprovidedwith an upstanding loop having a depression at each side thereof, the radially extending loop engaging over the upstanding loop and a connecting element forholding said loops in assembled relation whereby said springs are pivotally and rockably conprovided with a distorted portion, the dis nected together.

2. In a sprmg assembly, a plurality of spiral springs, each having aterminal coil torted portion of one coil being in the form of a loop arranged at an angle to the plane of said coil and having depressions at each side thereof, the cooperating distorted portion of the adjacent coil belng in the form of a loop extending about said first-named loop and engaging in said depressions, and means for holding said loops of adjacent provided with a distorted portion, the dis torted portion of one coil being in the form of a loop arranged at an angle to the plane of said coil and having depressions at each side thereof, the cooperating'distorted portion of the adjacent coil being in the form v ofa loop extending about said first-named loop and engaging in said depressions, and a' clip formed of wire doubled on itself to form a loop extending beneath said firstnamed loop and overethe last-named loop and having its ends attached to one of said C01 s. 4. A spiral spring for use in a cushion mattress or the like, comprising a spiral body portion having one of its terminal coils provided with a plurality of distorted portions' comprising loops extending laterally from said coil and its other terminal coil provided with a plurality of distorted portions comprising an upwardly extending loop having a depression at each side there of, said depressions extending below the plane of the corresponding terminal coil.

5. In a spring assembly, a plurality of spiral springs, the terminal turn of each spring being provided with a distortion in the form of a loop, the distortion of one spring engaging that of an adjacent spring, the loop of one of said springs being in a substantially vertical'plane and the other loop being in the plane Ofits corresponding terminal turn and embracing the outer end of the first named loop and means for holding said loops in engagement whereby said. loops will be connected together and said terminal turns may swing and rock in ver tical planes relative to each other. n

CHARLES D. KARR.

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