US1213231A - Spring-bottom. - Google Patents

Description

J. L. MOORE.

SPRING BOTTOM.

APPLICATION FILED m. 19. l9l6.

Patented Jan. 23, 1917.

2 SHEETS-SHEET l. 4*

JACOB L. MOORE, 0F MUNCIE, INDIANA.

SPRING-BOTTOM.

Specification of Letters Yatent.

Patented Jan. 23, 1917.

Application filed February 19, 1916. Serial No. 79,291.

T 0 all whom it may concern Be it known that I, JACOB L. Moons, citizen of the United States, residing at Muncie, in the county of Delaware and State of Indiana, have invented a certain new and useful Improvement ir Spring-Bottoms, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to mattress or cushion supporting spring bottoms employed in the construction of furniture, mainly beds. Hitherto these spring bot-toms have included in their formation assembled upright coiled springs, or wire fabric formed of flexibly connected links extending from end rails to end rails of the spring bottom frames either with or without underlying vertically arranged coiled springs.

It is the object of my invention to reduce the cost of these spring bottoms which cmploy vertically arranged springs and in carrying out my invention a set of coiled springs is disposed transversely of the spring bottom at an intermediate portion thereof, where the load is greatest. Between these coiled springs and each end of the spring bottom frame there is disposed a fabric formed of flexibly connected links, the inner (and transverse) ends of the fabric terminating where the outer (and transverse) ends of the upright coiled spring structure terminate, there being suitable means for joining the link fabric sections with the assembled coiled springs disposed therebetween.

In the preferred embodiment of the invention a flexible metal strip intervenes between each outer transverse edge of the coiled spring structure and the adjacent inner transverse edge of the adjacent link fabric section, these metal strips constituting the means whereby the three parts of the spring bottom are assembled. I prefer the metal strips for the purpose stated inasmuch as they do not lessen the flexibility and resilience of those parts of the spring bottom structure where they are disposed.

I will explain my invention more fully by reference to the accompanying drawings showing the preferred embodiment thereof and in which- Figure 1 is a plan view, partially broken away, of a spring bottom constructed in accordance with the invention; Fig. 2 is a view on line 2 2 of Fig. 1; and Fig. 3 is a view tions. This spring bottom frame includes two side rails 11 (preferably in the form of elliptical tubes with their widest portions arranged upright), four risers 2 distributed among the four corners of the frame and end rails 3 which are joined with the side rails by means of the risers. The end rails are provided with perforations at for receiving he outer ends of coiled springs 5 which serve to join the balance of the spring bottom with the end rails. Transverse panels 6 6 of the spring bottom are formed of flexibly interconnected links constituting link fabric. The outer transverse end of each transverse panel 6 of link fabric is connected with the inner ends of the adjacent transverse springs 5. The inner transverse end of each transverse panel 6 of link fabric is connected with a transverse strip or piece of resilient metal 7 which desirably has perforations at the outer transverse edge thereof nearest the link fabric panel connected therewith to receive the adjacent links of such panel.

The central portion of the spring bottom includes in its formation a,group of upright coiled springs 8 which are supported at their lower ends upon the transverse slats 9 that are carried by the side rails 1 of the spring bottom frame. The top coils of these uprightor vertical springs are desirably closed or endless to prevent their distortion and to enable these top coils to form component parts of a fabric which is completed by longitudinal stringers 10 attached to the inner transverse edges of the metal strips 7 and transverse stringers 11 attached to the outer stringers 10, these stringers having suitable interengagement with the top coils of the upright springs S to keep these coils in assembly and to maintain the proper relative arrangement of the upright springs. The spring bottom is completed by the addition of side strips 12 of resilient spring metal which are attached at their outer ends by some of the springs 5 to the end rails 3 of the spring bottom frame the ends of the transverse strips 7 being fastened to the longitudinal strips 12.

5y the construction described a spring bottom is afforded which has the requisite resilience and cushioning effect with the heavy springs 8 disposed Where they are needed and absent Where they are not required, whereby not only is the cost of the spring bottom decreased but the action of the spring bottom is improved owing to the absence of heavy coiled springs beneath the end panels of the spring bottom Where the load is light and frequently not sufiicient to exert suiiicient pressure at the ends of the spring bottom to secure the desired cushioning effect from the heavy springs.

Having thus described my invention I claim as new and desire to secure by Letters Patent the following 1. A spring bottom having a supporting frame and including end panels of fabric formed of fiexiblv connected links; a group of upright coiled springs arranged between the end panels; transversely arranged strips of resilient metal to which the inner transverse edges of the fabric panels are attached and with which the portion of the spring bottom formed of upright coiled springs is secured, these metal strips thus effecting the assembly between the end panels of the spring bottom and the intermediate portion of the spring bottom; and strips of resilient metal at the longitudinal edges of the spring bottom and attached at their ends to the end rails of the spring bottom frame, the afore- Gopies of this patent may be obtained for five cents each, by addressing the Commissioner said strips of metal being attached at their outer ends to the latter strips of metal.

2. A spring bottom having a supporting frame and including end panels of fabric formed'of flexibly. connected links; a group of upright coiled springs arranged between the end panels; and transversely arranged strips of resilient metal to Which the inner transverse edges of the fabric panels are attached and With Which the portion of the spring bottom formed of upright coiled springs is secured, these metal strips thus effecting the assembly between the end panels of the spring bottom and the intermediate portion of the spring bottom.

3. A spring bottom having a supporting frame and including end panels of fabric formed of flexibly connected links; a group of upright coiled springs arranged between the end panels; and transversely arranged pieces of resilient metal extending across the spring bottom from side to side and to which the inner transverse edges of the fabric panels are attached and with Which the portion of the spring bottom formed of upright coiled springs is secured, these metal pieces thus effecting the assembly between the end panels of the spring bottom and the intermediate portion of the spring bottom.

In witness whereof I hereunto subscribe my name this 20th day of January A. D.

JACOB L. MOORE. Witnesses G. L. Canoe, ETTA L. WHITE.

of Patents,

Washington, D. C.

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