US2009242A - Spring-cushion - Google Patents

Description

L. TROTTA ET AL SPRING CUSHION July 23, 1935.

Filed Dec. 8, 1933 2 Sheets-Sheet 1 July 23, 1935. L TROTTA ET AL 2,009,242

SPRING CUSHION Filed Deo. 8, 1953 2 sheets-sneek 2 Patented July 23, 1935y UNITED s'mxrrsl l 2,009,242 sPRING-CUsHmN Leonard Trotta andHugo Perlesz, Chicago, Ill.,

assignors to Burton-Dixie Corporation,0hicago, Ill., a corporation of Delaware Application December 8, 1933, Serial No. 701,439

s claims. (o1. vf35e Y The present invention relates to elastic or resilient cushions, such as bed-springs, spring-assemblies, spring-mattresses, seat-cushions, etc., and it pertains more particularly to improved and novel means for associating or combining together the upright spiral-springs of the structurev in a new manner whereby to provide a construction with better functioning properties.

An aim of the invention is to supply a cushion or spring unitoi this general type which is comparatively inexpensive to manufacture, the parts of which can be assembled with relative ease and facility, which is efficienty in service, which is unlikely to be injured or damaged in use, and in which the erect 'spiral-springs are suitably connected or joined together in a manner permitting advantage to be taken of the full resilient characteristicsk of the springs with reasonable assurance that their dislodgment or displacement will not occur and without likelihood of the attachment or tie wires becoming set or permanently deformed.

To permit those acquainted with and skilled in this art to comprehend the invention and its several advantages, both from structural and functional standpoints, in the accompanying drawings, forming a part of this' speciiication and to which reference should bevhad in connection withl the following detailed description, present preferred embodiments of the .invention have been illustrated.

In these drawings:-

Figure 1 presents a fragmentary plan of a corner portion only of a cushion or spring unit incorporating the invention, witha part of the fabric cover removed and with a small section of one of the inner-fabric division walls cut away to more clearly show the nature of the construction; y

Figure 2 is a vertical cross-section on line 2-2 of Figure l;

Figure 3 is an enlarged, fragmentary, vertical section through the upper portion only of the cushion on line 3-3 ofv Figure 1;

Figure 4 presents a modified structure in edge elevation with parts broken away;

' Figure 5 is an enlarged section on line 5-5 through the border portion of the construction shown in Figure 4; v I

Figure 6 is an enlarged, fragmentary'section through a top portion of the cushion depicted in Figure 4;

Figure 'l is a partial plan of another style of structure;

Figure 8 is an enlarged sectiononline 8-8 of Figure rI;

Figure 9 is a similar section on line 9--9 of Figure 7; and

Figure l0 is a plan view of one of the tie or securing wires before its lateral extensions are vbent around the parts to be fastened together.

Referring iirst tothe type of cushion-structure or spring-assembly presented in Figures l, 2, and 3, it will' be noted that the elastic or resilient structure comprises a plurality of upright spiralsprings 2 i', 2l arranged in longitudinal and transverse rows. I j

In one such set of rows the springs are well separated from one another, as illustratedin Figure 1, whereas the springs in the other set of rows at right angles thereto are nearly in contact.

These springs are of substantially-uniform diameter throughout their heights, but helical or spiral springs o1"` other forms may be used, if preferred.

Between the rows of springs which are closely associated with one another are fabric separators or fabric division Walls 22, 22 of nearly the same height as the springs, and each such fabric element has hems 23, 23 `along its top and bottom edges, each suchhem accommodating in it a tie-wire 24 having for each connection a lateral extension 25 bent around the corresponding terminal coil 2li of one spiral-spring and an immediately adjacent lateral projection 2l bent around the closely adjacent terminal coil 28 of the neighboring springv in the next row, as depicted on an enlarged scale in Figure 3.

The heights of such fabric members are such as to maintain the spiral-springs under some degree of compression', whereby the cushion or unit is kept in desired iormand intended shape.

Each such companion lateral extension 25 and oppositely-disposed projection 2l are formed as depicted in Figure by bending the tie-wire 24 outwardly sidewise to vform the section 29,

ythen lengthwise the axis of the wire proper to provide the short section' 3|, then crosswise an equal distance the other side of the main body of the wire to supplythe longer section 32, then lengthwise the wire to form the comparativelyshort portion 33, and then back inwardly to the main section of the wire, thereby providing the part34, in this manner forming twooppositelyextended open loops or projections which, during the manufacture of the spring-cushion are .bent around the end coils of the adjacent springs as, speciiied.`

`Each such tie-wire extends the full length or Width of the cushion, as the case may be, and it has the required number of pairs of oppositelyextended loops 25, 2l to fasten all of the spiralsprings of the two rows together.

Owing tothe'fact that such a fabric wall is used between "eachtwo adjacent rows of springs,

and due to the fact that the securing ears 25, 21 are encased in the fabric hems, any danger of the united metalfparts rubbing directly on one another with resultant noise is wholly overcome.

Since the loops forming the bent ears are not closed, when the spiral-springs are depressed by reason of a load imposed thereon, the tie-wires can elongate in minor degree by the temporary slight opening of the loops which immediately resume their normal shapes as soon as the load on the cushion is removed.

This construction and action permit the spiralsprings to be compressed or depressed efficiently and assures their constant association with one another in proper relation, because the tie-Wires do not become permanently bent or set in distorted form.

By reason of the manner in which the loops or ears 25 and 2T are curled around the wires forming the end coils of the spiral-springs the latter may, if desired, be allowed to turn or rock in such confining means in a measure and thus aid in giving the spring-cushion the required degree of resiliency and elasticity.

It will of course be understood that the top and bottom of the spring-unit is made alike so that a description of one will suiiice for both.

A fabric wall 35 having hems 36 along its top and bottom margins and similar to the fabric separating or division walls 22 extends completely around the outer edge of the spring structure, and flat fabrics 3l and 38 cover the entire top and bottom, respectively, of the spring-unit, their margins 39 being inturned, as shown, adjacent to the hems 35, 36.

`Each such hem 36 houses within it a border tie-wire 4| having oppositely-extended loops 42 and 43, similar to the parts 25 and 21 of the wire 24, at each point where the terminal coils of the marginal springs are located at the extreme edge of the construction, the one loop 42 extending around the end coil 44 of the corresponding spiral-spring in one direction with the fabric of the hem and .a portion of the corresponding cover fabric between itself and the wire of the coil, thus uniting all these parts together, the other loop 43 encircling the wire 44 in the opposite direction and with the fabric of the hem between itself and the spring coil.y

Thus all of the portions of the spring-cushion, including the spiral-springs and the several fab'- ric members, are fastened together solely by means of these securing loops or ears of the tie and border wires enclosed in the hems of the fabric parts.

The construction presented in Figures 4, 5, and 6 is substantially the same as that already described, except that the hems of the fabric division walls are recessed at |22 at the points where the tie-wire ears are bent around the coils of the springs, so that the fabric of the division walls is not between the parts at these points and the tie-wires directly unite the springs together.

Also, the border` or edge fabric may be cut away at |35, |35 in similar manner and for a. like purpose.

In Figures 7, 8, and 9 a still further modified type of structure is shown. In this case the construction is the same as portrayed in Figures 1, 2, and 3, except that in this instance the tiewires 224 are outside of the top and bottom cover fabrics and each pair of their loops 225 and 22T secure together terminal coils of the spiralsprings, the top fabric or bottom cover fabric,

as the case may be, and the hemmed portion of the corresponding fabric division-wall.

In similar manner the border tie-Wires 24| are not in the hems of the fabric extended around the edge of the spring-cushion but are outside thereof and their loops 242 and 243 tie together the coil of the corresponding spiral-spring, the marginal portion of the top or bottom cover fabric and the adjacent hemmed part of the border fabric.

From what precedes it will be apparent that the tieand border wires may or may not be located in the hems of the corresponding fabrics and advantages accrue from the employment of the wires in either one of these relations.

The fact that the wires are exposed in the form of structure of Figures 7, 8, and 9 is of no importance, because padding is used at the top and bottom of the cushion and possibly also around its edges, so that these wires are fully concealed'and out of View.

Whereas a few embodiments of the present invention have herein been set forth, it is to be understood that these are presented by way of example only, that the invention is capable of other satisfactory embodiments, and that changes of a minor or radical nature may be incorporated in these cushions without departure from the heart and essence of the invention as defined by the appended claims and without the loss or sacrifice of any of its material benefits.

We claim:

l. In a spring-cushion, the combination of rows of spiral-springs, means fastening said springs together, a border-fabric extended around the edge of the cushion, a cover-fabric over one set of end coils of said springs, and a border tie- Wire around the margin of the cushion covered by said cover-fabric, such tie-wire fastening the marginal portions of said border-fabric and cover-fabric to the corresponding terminal coils of the marginal springs of the cushion, such tiewire for each such connection being bent laterally in one direction to form a loop bent around the terminal coil in one direction and bent directly adjacent to said loop laterally in the opposite direction to form another loop bent around said terminal coil in the opposite direction.

2. The structure presented in claim 1 in which the border-fabric has a hem in which said tiewire is accommodated.

v 3. In a spring-cushion, the combination of rows of spiral-springs, continuous strips of fabric between said rows of springs with hems at their opposite edges in approximate register with the planes of the terminal coils of said springs, and tie-wires in said hems and fastening the terminal coils of said springs in adjacent rows together, each such tie-wire for each such vconnection being bent laterally and then back again to form a double-wire extension bent around the terminal coil of a spring in one row and bent laterally in the opposite direction directly adjacent to said extension and then back again to provide a double-wire projection bent around the wire of the terminal coil of the adjacent spring in the next row, the fabric of the hem being between said spring terminal coils and said extension and projection.

LEONARD TROTTA. HUGO PERLESZ.

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