US2049961A - Spring-structure - Google Patents

Description

Aug. 4, 1936. s. KARPEN SPRING STRUCTURE Filed Aug. 29, 1934 Patented Aug. 4, 1936 SPRING-STRUCTURE Solomon Kai-pen, Chicago, Ill., assignmto S. Kai-pend; Bros Chicago, 11]., a corporation of West Virginia Application August 29, 1934, Serial No. 741,965 4 Claims." (01. 5-269) This invention relates particularly to springstructures adapted for use for various purposes, as for use in mattresses, bed-springs or for upholstery purposes.

An object 01' the invention is to provide improved spring-structure which will permit great flexibility while at the same time substantialLv avoiding noise, caused by the clashing oi the endrings against each other. A further object is to provide a spring-structure which may be rolled without producing distortion or bending of the end-rings and their connections.

The invention is illustrated in a preferred embodiment in the accompanying drawing, in which-- Figure 1 is a plan view of spring-structure embodying my invention; Fig. 2, a plan view of a modified form of spring-structure; Fig. 3, a sectional detail view, the section being taken as indicated at line 3 of Fig. i; Fig. 4, a plan detail view of a modified form of spring structure embodying my invention; Fig. 5, a sectional view, the section being taken as indicated at line 5 oi Fig. 4; and Fig. 6, an enlarged view of the structure shown in Fig. 4, the view being taken as indicated at line 6 of Fig. 4.

Referring to Fig. 1 and Fig. 3, the spring-structure shown comprises coil springs A, A, A, and helical connectors B, B connecting the springs.

The springs A may, if desired, be of the hourglass type of upholstery springs, in which event helical connectors will ordinarily be employed to connect the end-rings at both sides of the spring structure.

It has been common practice to provide such end-rings with depressions which-extend below the end-rings in a vertical plane and such depressed portions have been connected by helical connectors. Such structure has the disadvantage of producing shoulders lying against the endrings which tend to engage the end-rings when the mattress is rolled or flexed. This produces a clashing oi the shoulders against the end-rings, resulting in noise and in distortion of the depressions and the end-rings.

The characterizing feature of the present invention is that the depressions, instead of extending in a vertical plane below the end-rings, are slanted laterally at suitable angles so that the end-rings are spaced sufficiently apart to permit flexing oi the coil springs without causing the shoulders of the depressions to engage the endrinss.

In the construction shown in Figs. 1 and 3, the end-rings iii of coil springs A are provided with depressions II which extend laterally and downwardly. The bottom rounds. I! of the depressions, as shown more clearly in Fig. 3, are brought substantially in contact. In the illustration shown in Fig. 3, the angle of movement between 5 the walls of the depression above the rounds I2 is almost thus permitting wide relative movement of the adjacent coil springs without any contact other than that between the adjacent rounds i2, I2. 11' desired, the angle or inclina- 10 the knots l3 which are employed in the construction shown in Fig. 1. It will be noted that each 01' the springs A is provided with at least one 25 depression I4 which terminates in a free end il. Each of the free end depressions is engaged by a helical connector B so as to secure it to the adjacent depression of the adjacent coil spring A. The free end depressions H, as well as the de- 30 pressions it, which do not terminate in a free end, are slanted outwardly and downwardly in the same manner as the depressions ii of the coil spring A.

It will be noted that the free end depressions 35 H are each provided with a shoulder ii, a shank i8 and a shoulder l9 adjacent the end 85. The shoulder i1 is firmly engaged by the helical connector B and is sufliciently strong to maintain the depression firmly in contact with the adjacent 40 depression when engaged by the helical connector. If desired, therefore, the shoulder i9 may he cut away, leaving only the shoulder i1 and the shank i8. With the structure shown in Fig.

2, increased flexibility over that shown in Fig. 1 45 is produced by the free end depressions M; at the same time, the knotting operation is eliminated.

In the spring construction shown in Figs. 4, 5, and 6, the adjacent end-rings 20 of the spring 50 structure, such as is illustrated in Fig. 2, are provided with depressions 2| which extend below the end-rings in a substantially vertical plane, as illustrated more clearly in Fig. 5, the depressions being connected by a helical connector 13'. One 01' 55 the depressions is, however, provided with a free end 22, the shoulder N of the last-mentioned depression being engaged by coils of the connector B and serving to lock the depression firmly against the adjacent depression. It will be noted that the tree end 22 does not extend above the connector 3*. However, if desired, the end may be so extended in accordance with the showing in Fig. 2.

In each construction described, it will be observed that increased flexibility is afiorded. while at the same time the helical connector is supported below the plane of the end-ring. The free end depression shown in Figs. 4, 5, and 6 brings about increased flexibility by eliminating one of the shoulders, while in the construction shown in Figs. 1 and 2, increased flexibility is aflorded by angularly related depressions. The structures shown in Figs. 2, 4, 5, and 6 have the iurther advantage over the structure shown in Fig. 1, in that the knotted ends II are eliminated.

The foregoing detailed description isgiven for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible. in view oi the prior art.

What I claim as new, and desire to secure by Letters Patent, is:

1. A spring-structure comprising parallel rows oi upholstery springs having end-rings disposed in adjacent relation at lines between said rows,

each of said end-rings where adjacent to one on the opposite side 01 the row having an outwardly and downwardly extending depression, and hellcal connections arranged between said rows and having threaded engagement with said depressions and holding the bottom portions oi. such adjacent depressions substantially in contact.

2. A spring-structure comprising parallel rows or upholstery springs having end-rings disposed in horizontal alinement but slightly spaced apart. each of said end-rings where adjacent to one on the opposite side of the row having a downwardly and laterally extending depression, and helical connections arranged between said rows below the plane of the end-rings and having threaded engagement with said depressions and holding the bottom portions 0! said adjacent depressions substantially in contact.

3. A spring-structure comprising parallel rows of upholstery springs having end-rings juxtaposed but slightly spaced apart, each of said end-rings where adjacent to one on the opposite side or the row having a depression slanting downwardly and outwardly, some or said depressions terminating in free ends, and helical connections arranged between said rows and having threaded engagement with said depressions and holding the hottom portions of such adjacent depressions sub- 25 stantially in contact.

4. A spring structure comprising adjacent rows of upholstery springs having end-rings juxtaposed but slightly spaced apart, each of said end-rings where adjacent to one on the opposite side of the row having a laterally extending depression below the plane of the end-rings, and helical connections arranged between said rows and having threaded engagement with said depressions and holding the bottom portions of such adjacent depressions substantially in contact.

- SOLOMON KARI-EN.

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