US2319431A

US2319431A - Inner spring cushion and mattress structure

Info

Publication number: US2319431A
Application number: US368133A
Authority: US
Inventors: David T Owen
Original assignee: HANNA G DIMICK
Current assignee: HANNA G DIMICK
Priority date: 1940-12-02
Filing date: 1940-12-02
Publication date: 1943-05-18
Anticipated expiration: 1960-05-18

Description

May18, 1943 D,v T, WN 2,319,431 4 INNER SPRING CUSHION AND MATTRESS STRUCTURE Filed No?. 2, 1940 2 Sheets-Sheet l 12 jo 6. J9 J 1NVENT0R BYvA/(GLL'Q,

May 18, 1943 D. T. OWEN 2,319,431

INNER SPRING CUSHION AVNDYMATTRESS STRUCTURE Filed Nov. 2, 1940 2 Sheets-Sheet 2- 3o I 9 18 J6 1? 30 3 y A, INVENTOR 6 r muv/11 awr/v Patented Mey 1s, 1943 INNER SPRINGr CUSHION AND MATTRESS STRUCTURE David T. Owen, Cleveland Heights,` Ohio, assignor to Hanna G. Dimick, Cuyahoga Falls, Ohio Application December 2, 1940, serial N0. 36s,133

(ci. s-zsoi 8 Claims.

This invention relates to improvements in mattresses and cushions of the type having spring units therein, which units generally consist of a large number of coil springs secured to each other in spaced relation. u As the springs of these spring units must be, limited to a maximum height of approximately 51@ inches, so as to avoid sway and shake in the finished mattress, excessive padding (cotton or other padding material) is needed to obtain the desired customary height of the mattress, about 6to 7 inches. However, padding material, cotton, etc., is compressible and in use packs, clings together and looses its fluffy condition and yielding action. This is particularly the case at the border edge of a mattress, as these edges are mostly exposed to excessive use and are supported only by the outer springs of the spring unit within the mattress.

The primary object of Vthe present invention is the provision of a mattress or cushion of the type referred to in which the customary spring unit carries and supports on its outer springs additional spring means so as to construct prop erly yielding edges with stored reserve elasticity to equal the elasticity of the interconnected inner springs and in which the iinished structure is soft and yields and keeps its shape and form under all conditions. K

This general object of the invention is attained by attaching to the outer springs ol a spring unit for a mattress or cushion elongated strips of yielding material, padding the thus constructed spring unit, and inserting same into a bag so that the elongated strips supported by the outer springs of the spring unit are tensioned, help to properly shape the sides of the thus constructed mattress or cushion, and prevent a decrease in the height of the sides of the mattress when the padding material should pack.

A mattress or cushion constructed in the man- A. ner described above is soft and comfortable in use and keeps its shape'and form during excessive wear without loss of its straight edging.

These and other important additional objects.l

and novel features of construction, combination and relations of parts by which the objects in -view have been attained will appear and are set forth in detail in the course of the following specication.

The drawings accompanying and forming part of the specication illustrate certain practical embodiments of the invention, but it will be ape parent as the speciiication proceeds that the structures disclosed may be modified and changed in various ways without departure from the true spirit and broad scope of the invention.

Fig. l shows a fragmentary cross sectional view through a mattress with an inner spring unit having supported upon its outer springs iii) elongated yielding strips in accordance with the invention.

Fig. 2 is a-perspective view of one of the yielding strips before its attachment to the outer springs of an inner spring unit.

Fig. 3 is a cross sectional view similar to Fig. l showing a somewhat modied form of the yield- 'ing strips attached to the outer springs of the inner spring unit of the mattress.

' showing still another modified form of the yielding strips attached to the outer springs of the inner spring unit of. the mattress.

Fig. 8 is a perspective view of one of the yielding strips used in the structure disclosed in Fig. 7.

Referring now more in detail to the exemplifled form of mattress construction shown in Figs.

l and 2 of the drawings, reference numeral 2 represents an inner spring mattress, the inner spring unit 3 of which consists of a plurality of coil springs 4 interconnected-with each other to a unitary spring body unit by means of clips 5. The outer springs 6 of this spring body unit have mounted upon their opposite end coils 1 and 8 elongated yielding strips 9 made of flexible slightvly resilient material (such as paste board like material). Strips 9, as shown, embody a base portion Il) secured to end coils 1 and 8 of outer coils 6 by means of clips IVI, and a shorter upper portion I2 integrally formed with base portion I Il and connected therewith by a curved connecting portion I4. .The thus constructed strips lwhich are preferably slotted as at I5 to permit of longitudinally yielding action, enclose the inner layers I6 of padding material I1, form roundi ed parallel edges for the mattress to facilitate its proper shaping in a simple and economical manner, and yieldingly support the edges of the mattress, due to the inherentelasticity of `these strips, when the outer layers I8 of the padding material are placed on the thus prepared struc- `ture and folded around the rounded edges of the strips and when the structure nally under compression is sewed into a cover or bag I9. During this sewing procedure the upper or top portion I2 of each strip is yieldingly forced toward its base portion and thus put under tension so as to provide ample spring action for stretching the sides 20 of the mattress should its padding pack.

In the modified form of construction of a mattress shown in Fig. 3 the strips 2 I, supported on -these strips.

the end coils 'I and 8 of the outer springs 6 of the spring unit, have substantially V-shaped cross sections and are attached to these outer springs by means of clips Il, so that their elongated pockets 22 extend outwardly toward the sides of the mattress. In this arrangement upwardly extended portion 23 of each strip 2I, which portion is shorter than its base portion 24, forms a bracing and holding edge member for theouter layers I8 of the padding material l1, layers I8 being folded around said bracing and holding edge member to provide smooth top and bottom edges on the mattress and dispose of the ragged edges 26 on layer I8 by tucking these edges into the elongated pocket 22 of strips 2l.

-Inaddition, the described construction permits of quick and economic attachment of ticking 21 to base portion 24 by means of clips 28, thus materially simplifying present day construction in which the ticking of a mattress is sewn to sisal layers folded around top and bottom coils of the outer springs of a spring unit.

In the modified form of construction of a mattress shown in Fig. 5 of the drawings, the substantially V-shaped strips 29, supported on the end coils 'I and 8 of the outer springs 6 of the spring unit, have arranged therebetween coil springs 30 to increase the inherent elasticity of The disclosed structure otherwise generally resembles the structure shown in Fig. 1, therefore scrutinized description of Fig. 5 is superiiuous.

Finally, the modified form of construction of a mattress shown in Fig. '7 of the drawings discloses a structure quite similar to the structure shown in Fig. 3, with the exception that the V- shaped strips 3I of this construction have arranged between their integrally formed diverging base portion 32 and upwardly an-d outwardly extended upper portion 33 coil springs 34 embodying two coils only, a base coil 35 secured to base portion 32 by means of clips 36 and a top coil 3'! secured to upper portion 33 by means of clips 33. This arrangement, in which the two

coils

35 and 31 are angularly related to each other, provides a substantially unobstructed, elongated pocket 39 and insures proper and sirnple tucking of ragged edges 28 into these pockets, It is obvious, that, if desirable, the edges on

brace portions

23 and 33 may be rounded to avoid ltearing -or cutting of cotton layers I8 folded around these edges.

Having thus described my invention:

What I claim is:

l. An-inner spring for cushion and mattress structures comprising a, spring unit with substantially parallel top and bottom surfaces, and yielding, elongated, V-shaped strips of flexible material seated on said top and bottom surfaces near their edges, each of said strips having its oneA flange secured to the adjacent surface of the spring unit and its other flange extended outwardly from said surface. 2. An inner spring for cushion and mattress structures comprising a, spring unit with substantially parallel top and bottom surfaces, yielding, elongated, V-shaped strips of flexible material seated on said top and bottom surfaces near their edges, and spring means between the flanges of said V-shaped strips, each of said strips having its one flange secured to the adjacent surface of the spring unit and its other flange extended outwardly from said surface.

3. An inner spring for cushion and mattress structures comprising a spring unit embodying.

a plurality of coil springs having their top and bottom convolutions coupled together to form a unitary spring body, and yeilding, elongated, V-shaped strips of flexible material seated on the top and bottom convolutions of the border springs of said spring unit, each of said strips having its one flange secured to the adjacent convolution of a border spring of the spring unit and its other flange extended outwardly from said convolution to form extended yielding edges cn said spring unit.

4. In an inner spring cushion and mattress structure a spring unit embodying a plurality of coil springs having their top and bottom convolutions coupled together to form a unitary spring body with substantially parallel top and bottom surfaces, yielding, elongated, V-shaped strips of exible, slightly resilient material seated on said top and bottom surfaces near their edges, and padding material covering said spring unit and extended into said strips between the flanges thereof, each of said strips having its one flange secured to the adjacent convolution of a border spring of the spring unit and its other flange extended outwardly from said convolution to form extended yielding edges on said spring unit.

5. An inner spring cushion and mattress structure as described in claim 4, wherein said V-shaped strips have arranged between their flanges spring means attached to the inside faces of said flanges to effect an increase in the resistance of said V-shaped strips against compression.

6. In an inner spring cushion and mattress structure a spring unit embodying a plurality of coil springs having their top and bottom convolutions coupled together to form a unitary spring body with substantially parallel top and bottom surfaces, elongated, V-shaped strips of cardboard seated on said top and bottom surfaces near their edges, padding covering said top and bottom surfaces and extended into said strips between their flanges, and covering means for said padding tensioned around said V-shaped strips and secured to the flanges thereof, each of said strips having its one flange secured by clips to an adjacent convolution of a border spring of said spring unit and its other flange extended outwardly from said convolution.

'7. In an inner spring cushion and mattress structure a spring unit having a substantially straight top surface, yielding V-shaped strips of slightly resilient material seated onsaid top surface near its edges, padding covering the said top surface and folded over said strips with its edges pocketed between the flanges thereof, and a covering for said padding tensioned around same and fastened to said strips.

8. In an inner spring cushion and mattress structure a spring unit embodying a plurality of coil springs having their top and bottom lconvolutions coupled together to form a unitary spring body having substantially parallel top and bottom surfaces, V-shaped slotted strips of exible,`re silient material seated on said surfaces near their edges by securing each of said strips with its one flange to an adjacent convolution of a border spring of said unit so as to extend its slotted other fiange outwardly-from said convolution, and padding material covering said surfaces of said spring unit folded around the slotted flanges of said strips and having its edges tucked between the iianges of said strips.

DAVID T. OWEN.