US2311739A - Bed or similar spring - Google Patents

Description

M N L WN QQQ 2 Sheets-Sheet 1 I A. L. DAY

BED OR SIMILAR SPRING Filed Feb. 4, 1941 NN QN wama 1' Feb. 23, 1943.

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Feb. 23, 1943. A, Y 2,311,739

BED OR SIMILAR SPRING.

Filed Feb. 1941 2 Shets-Sheet 2 WITNESS Patented Feb. 23, 1943 UNITED STATES PATENT OFFICE BED R SIMILAR SPRING Arthur L. Day, Bangor, Maine Application February 4, 1941, Serial No. 377,392

1 Claim.

The invention relates to a bed or similar spring of the general type having a series of vertical coiled springs mounted on supporting means carried by a base frame, and at their upper ends interconnected and connected with a marginal top frame.

One object of the invention is to provide a novel and advantageous yieldable construction for supporting the vertical coiled springs.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanying drawings.

Figure 1 is a bottom plan view showing one end portion of the spring.

Figure 2 is an enlarged bottom plan view part- 1y broken away.

Figure 3 is a detail horizontal sectional view looking upwardly.

Figure 4 is a perspective view showing a number of the vertical coiled springs and their supporting and securing means.

Preferred features of construction have been illustrated and will be rather specifically described, with the understanding, however, that within the scope of the invention as claimed, variations may be made.

A base frame B is provided, said base frame being of rectangular form and being preferably constructed from angle metal. A central longitudinal member 8 is secured to the end bars of the base frame B and may Well be formed from two pieces of angle metal welded together, said central member being tied to the side bars of said base frame by transverse bars 9 disposed at suitable intervals, these bars 9 being also pref erably of angle metal.

Transverse spring-supporting wires ID are disposed in uniformly spaced relation between the sides of the base frame B and the central member 8, the ends of said Wires II] being connected with said sides of said base frame and said central member, by coiled tension springs II. Longitudinal rows of vertical coiled springs l2 are supported by the wires I0 and the base convolutions of these springs of each row are in contiguous relation with each other at diametrically opposite points, and the wires II) are substantially tangential to said base convolutions at their points of conltiguity. The base convolutions of the springs I 2, in question, are connected with the wires I0 by means of pig-tail springs I3 which surround said wires and extend longitudinally thereof. The end portions of these pig-tail springs extend beyond the wires I0, adjacent the coiled tension springs II and said end portions are used to connect the base convolutions of other rows of coiled springs I4 at the longit-udinal sides of the spring structure over the side bars of the base frame B. The intermediate portions of the same springs I3 are used to connect the base convolutions of a central row of springs I5, the various springs I2, I4 and I5 being all vertically disposed and preferably of more or less hour-glass form.

At their upper ends, the springs of the various rows (I2, I4 and I5) are connected by transverse pig-tail springs I5, and the outermost of the springs I2 and I 4, over the side and end bars of the base frame B, are connected by other pigtail springs l1 with a rod I8 bent into rectangular form. This rod I8 and the pig-tail springs I! support a rectangular top frame T which is preferably formed from angle metal, with one horizontal inwardly projecting flange I9 and one vertical downwardly projecting flange 20, the rod I8 being secured to the flange I9 by headed studs 2| shown more particularly in Fig. 3. The numerals 22 to 21 and 34 and the letter L denote elements forming no part of the invention herein claimed.

From the foregoing, taken in connection with the accompanying drawings, it will be seen that novel and advantageous provision has been made for carrying out the objects of the invention. The bottom structure of the spring effectively supports and anchors the various vertical coiled springs, yet will yield as required under load, and due to the central longitudinal member 8, the spring will not sag in the center.

As excellent results may be obtained from the details disclosed, they are preferably followed. However, within the scope of the invention as claimed, variations may of course be made.

What is claimed is:

In a bed or similar spring, a rigid base frame having side and end bars and a central longitudinal bar, parallel uniformly spaced transverse wires extending from said central bar to said side bars, tension springs connecting the ends of said wires with said side bars and said central bar, two longitudinal rows of vertical coiled springs disposed over said side bars, a third longitudinal row of vertical coiled springs disposed over said central bar, the base convolutions of the coils of any of said rows being contiguous to each other adjacent said tension springs, additional longitudinal rows of vertical coiled springs over said transverse wires, the base convolutions of the springs of any of said additional rows being contiguous to each other adjacent said transverse Wires, and transverse pigtail springs surrounding said transverse wires and each extending from one of said side bars to the other, the end portions of said pigtail springs being disposed over said side bars and embracing the contiguous portions of the base convolutions of said two rows, the central portions of said pigtaii springs being disposed over said central bar and embracing the contiguous portions of the base convolutions of said third row, said pigtail springs also embracing the contiguous portions of the base convolutions of said additional rows.

ARTHUR L. DAY.

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