US1596273A - Spring cushion - Google Patents

Description

Aug. 17 192s. 1,596,273 F. KARR SPRING CUSHION Original Filed Dec. 26, 1922 In m re far:

Patented Aug. 17, 1 926.

FRANCIS KARE OF HOLLAND, MICHIGAN.

srnme cnsnron'.

Application filed December 26, 1922, Serial No. 608,899. Renewed January 28, 1926.

This invention relates to spring cushions of the type including a plurality of coil p Further objects of the lnvention will become apparent as the description is read in connection with the accompanying draw-. ings, in which,-

Fig. 1 is a plan view of a spring assembly suitable for use in a mattress, a cushion or the like, with the intermediate portions broken away to indicate that any suitable number of coil springs may be used;

. Fig. 2 is a side elevation of the assembly p shown in Fig. 1;

, Figs. 3 and 4 are plan views of right and left hand coils respectively;

Fig. 5 is an elevation of a detail showing the joint between certain of the coils an the wires for binding the margins -of the assembly;

Y or the like,

Fig. 6 is a fragmentary end elevation looking from the right at Fig. 1;

Figs. 7 and 8 are modified forms showing the connecting spirals and the spacing springs made integral; and I Fig. 9 is. a detail showing how the vspacing springs may be interlocked with the connecting spirals.

The assembly shown inFigs. 1 and 2 includes a plurality of left hand coil springs 10, and right hand coil springs 11, connected by the helical springs 12, which enclose aligned portions of the surface coils of the springs, the marginal edges being bound by the wires or straps 13, threaded through the outside helical springs 12, and having their ends secured to the terminal springs as indicated at 14 (Figs. 1 and 5). When this assembly is used as a section of a mattress the spacing springs 15, here shown as helixes, are used. They extend from the upper right hand to the lower left hand of each spring at the right hand end of the assembly (Figs. 1 and 5-) and from the 1 upper mmal spring at the left end of left tothe; lower right of each ter the assembly shown in Fig. 1. a

The surface turns of each of the coils are rovided with aligned portions having shoulders that cooperate with convolutions of the helical connecting springs to make secure joints between these springs and the surface coils throughout the assembly. Referring particularly to Fig. 3, the upper surface coil terminates in a substantially straight portion '16, aligned with a similar portion 17, but spaced therefrom by an'intermediate offset portion 18. The off-set portion 18 is connected to the aligned portions 16 and 17 by integral parts 19 and 20, of the spring, which form shoulders for engagement with the convolutions of. the

connecting helixes. The portion 17 joins a transversely extending portion 21 whereby another shoulder 22, in substantial alignment with the shoulders 19 and 20, is formed. The portion 21 joins a diagonally extending bend 24, to a portion 25, aligned with a similar portion- 26, and spaced therefrom by an intermediate off-set 27, whereby, additional shoulders 28 and 29, are formed. The

d lower surface coil includes similar aligned portions and shoulders arranged in just the reverse order, and to prevent confusion, they will be referred to onlyv in a general way and without applying reference characters to each shoulder and portion.

Referring to Fig. 4, it will be seen that the upper and lower surface turns 30 and 31, of the left hand coil, are provided with similar aligned portions andshoulders arranged in like manner.

. Referring again to Fig. 1,-it will be seen that the ofi-set- portions 18 and 27 ,lie out side of the connecting helixes 12, whereas the aligned portions 16, 17, 25 and 26 are enclosed within the helixes and thus the ortion 23 which is connected by" a lateralshoulders 19, 20, 22, 24, 28 and 29 are placed either in, engagement with convolutionslof the helixesor in posltion to engage convolutions upon a very shght movement.

It will therefore, be apparent that, the

connecting helixes and the surface turns of the springs are securely joined and that" the intermediate helixes will securely bind the surface turnson adjacent sides of each pair of coils together.

Theconnecting helixes and the spaeigg springs may. be made of such tproportions Y as to be easily threaded over e enclosed portions by which the assembly is The substantially right angle bends forming the shoulders 22, facilitate the building of the corners of the assembly.

' Figs. 7 and 8 are inserted to illustrate how the connecting helixes and the spacing springs may be made in one piece. When thus made, the portions corresponding to the connecting helixes 12, will be threaded through farther'than final position and then reversed to connect the end portions 32 and 33 into the next adjacent connecting spring 12.

The intermediate portions of the spacing springs may be closely coiled as indicated at 34 (Fig, 9) to present a smoother surportions at the adjacent edges of two rows of springs and having convolutions arranged to cooperate With said lateral projections.

2. A spring cushion comprising a plurality of rows of upright springs, corresponding surface turns of the springs of each row having aligned portions extending lengthwise to the row and spaced by an off-set intermediate connecting portion, and ahelical spring enclosing said aligned portlons and having convolutions alongside said intermediate connecting portions.

3. A spring cushion comprising a row of upright springs, the terminal coil at one end of each spring having a substantially right-angled bend in the plane of said terminal coil, and a pair of spacedaligned portions and a relatively off-set intermediate connecting portion beyond the bend, and a continuous helical spring enclosing both of the row, a continuous helical spring enclosing the aligned portions of the several springs and a flexible tieextending through the bore of the said continuous helical spring and having its opposite ends anchored upon the terminal coils of the coil springs at the ends of the row.

5. A spring cushion including a row of upright springs, means for securing the springs together, and a spacer spring for each end spring extending from one side of the upper turn to the opposite side of the lower turn.

6. A spring cushion including a row of upright springs of which the end springs of each have surface turns provided with aligned portions spaced by 'oif-set portions and a helical spring for each end upright spring enclosing said aligned portions and extending from one side of the upper turn to the opposite side of the lower turn.

7. A spring cushion comprising a plurali-ty of rows of upright'springs, the surface turns of each spring in each row having, at each side, aligned portions and a helical spring enclosing the aligned portions on the adjacent sides of two rows, said aligned portions extending generally in the direction of the alignment and embodying a bend for cooperating with s veral convolutions of the helical spring to prevent disengagement.

8. A spring cushion comprising a plurality of rows of upright springs, corresponding surface turns of the springs of each row ,having aligned serpentine portions including a plurality of reverse bends, and,

a helical spring enclosing parts of said serpentine portions and interlocking with other parts thereof.

FRANCIS KARR.

Images