US2072562A - Spring cushion - Google Patents

Description

March 2, 1937.

J. R. LEE

l SPRING CUKSHION Filed Jan. 20, 1934 lllllllllIlIlIllIllllllllllllllllllllll" 4 M 4 ,I i 4 n .14 Illll/llllllllllllllllll/llllllllllllllllllllllllllllllllllllllllllllllll/llllnlll Patented Mar. `2, A1-937 UNITED STATES PATENT OFFICE SPRING CUSHION Application January 20, 1934, Serial No. 707,576

3 Claims.

This invention relates to an improvement in spring-cushions, particularly cushions for railroad car seats, automobiles, davenports, or other kinds of furniture.

5 In cushions of this character, springs have been arranged, some (preferably half) having their ends secured to the front of the frame and extending upwardly to the rear, while others have their ends secured to the rear of the frame and extending upwardly to the front such, for

instance, as shown and described in an application filed by me August 12, 1933, Serial No. 684,789, which terminated in Patent No. 2,008,670, granted July 23, 1935.

One object of this invention is to provide means for firmly holding the ends of the wires forming the ends of the springs, and which will permit springs adapted for different widths of cushions to be formed from the same length of wire.

The invention consists in the construction as hereinafter described and particularly recited in the claims.

In the accompanying drawing:

Fig. 1 is a sectional side view of a springcushion constructed in accordance with my invention;

Fig. 2 is a broken plan view with the seatcovering removed;

Fig. 3 is a sectional View on the line 3--3 of Fig. 1;

Fig. 4 is a broken, perspective view of the spring-anchoring plate, detached;

Fig. 5 is a sectional view illustrating a modied form of anchoring-plate;

Fig. 6 is a sectional View on the line 6 6 of Fig. 5; and

Fig. 7 is a broken, perspective View of the modiiied form of anchoring-plate, detached.

In carrying out my invention, I employ a frame I0 of the desired size, and to this frame is attached an anchoring-plate I I, and preferably the anchoring-plate will be formed with anges I 2 by which it may be secured to the frame. This anchoring-strip is formed on opposite sides with alternately-arranged pairs of loops I3 and hooks I4, which are struck upward from the upper face of the anchoring-plate.

The spring-members each consist of a pair of complementary, parallel upper-reaches I5 connected together at their ends by integral crossreaches I6, and each merging at its other end l into a loop or helical coil II which has capacity for bodily vertical movement, and for that reason, may be characterized as oating loops.

In the preferred construction, these springs are reversely arranged, that is, some (and preferably half) of them have their ends secured to one side of the anchoring-strip and extending upwardly to the rear, while the others have their ends secured to the other side of the anchoringstrip and extending upwardly to the front.

The intermediate reaches I8 are reversely bent, forming lower reaches I9, the ends of which are formed with fingers 20 to be engaged by the loops I3, the ends of the springs being held down by the hooks I il. In other words, in mounting the springs, the lower reaches are pressed together so as to permit them to slide beneath the hooks I 4 and move toward the loops I3, and when in line therewith, are allowed to expand so that the fingers 20 will be engaged and held by the loops I3. The ends of the hooks may be turned down over the wires to securely hold them in place.

Instead of forming the anchoring-plate with upwardly-extending loops and hooks, the anchoring-plate II, as shown in Fig. 7 of the drawing, may have loops 2l struck downwardly and the side-walls 22 formed with slots 23, so that the fingers 2U, when crowded together, may be passed through the slots 23 and expand into the loops 2 I. The springs are thus firmly anchored to the seat-frame.

This construction permits springs for seats varying in size through a considerable range to be all formed from wires of the same lengththat is, any lengthening of the upper-reach can be brought about by reducing the lengths of the fingers 20 to the minimum amount necessary for their engagement with the loops 2|, and any shortening of the upper-reaches may be accomplished by lengthening these ngers to the maximum which permits insertion of them in the loops.

It is obvious that the anchoring-plates may be tilted so that the coils I1 of springs at the rear of the seat will be depressed below the plane of the coils at the front of the seat, so that the top of the seat will be inclined downwardly and rearwardly from the front edge.

I claim:

1. In a spring-cushion, the combination with a supporting-frame, of an anchoring-plate secured thereto and extending from side to side, said plate formed with alternating integral pairs of loops and hooks on each side, the hooks on one side being in line with the loops on the other side, and springs having their anchoring ends outwardly turned and passed beneath said hooks and into engagement with said loops.

2. In a spring cushion, the combination with a. supporting frame, of a plurality of Wire springs each comprising a flat horizontal U-shaped upper reach, intermediate reaches and lower reaches, an intermediate reach and a lower reach being formed as a continuation of each arm of the U- shaped upper reach, said intermediate reach extending downwardly frorn and in a direction opposite to that of its associated upper reach and said lower reach extending horizontally and in a direction opposite to that of the intermediate reach, said lower reaches being secured to the said supporting frame, those portions of the wires which connect an upper reach with an intermediate reach being formed into coils-:the saidsprings being arranged with relation toleach other so that the upper reaches extend alongside offeach other, some projecting in one direction andY others projecting in an opposite direction.

3. In a spring cushion, the combination with a supporting frame, of a plurality of wire springs each comprising a flat horizontal U-shaped upper reach, intermediate reaches and lower reaches, an intermediate reach and a lower reach being formed as a continuation of each arm of the U-shaped upper reach, said intermediate reach extending downwardly from and in a direction opposite to that of thefassociatedf-upper reach and said lower reach extending horizontally and in a direction opposite to that of the intermediate lreach, said lower reaches being secured to the said supporting frame, those portions of the Wires which connect an upper reach with an intermedialongside Veach other, the upper reaches of alter- :nate springs extending in opposite directions.

JOHN R. LEE.

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