US1618579A - Spring construction - Google Patents

Description

, 1,618,579 Feb. 22, 1927- F DARCY SPRING CONSTRUCTION Filed Dec.9, 1925 Patented Feb. 22, 1927.

UNITED STATES FRANK P. DARCY, OF KALAMAZOO, MICHIGAN.

SPRING CONSTRUCTION.

Application filed December This invention relates to spring constructions and comprises all improvements over the prior art which are disclosed in this hend the essential features of the improvements, drawings illustrating a preferred form have been annexed as a part of this disclosure.

-Fig. 1 is a perspective View of portion of a chair bottom with the spring construction applied thereto.

Fig. 2 is a bottom plan view of one of the spring slats forming part of the spring construction in Fig. 1.

Fig. 3 is a side view of one of the spring slats.

The spring construction comprises three spring slats 1 secured by nails 2 or otherwise to the bottom of a chair 3. A covering of canvas or other material preferably is placed on top of the spring slats, and on the canvas is placed hair or any other suitable filling material, and then over this is placed a finish covering of any desired material such as leather, velvet, etc.

Each spring slat 1 comprises two metal strips 4, 5, each strip being provided with fastening holes 6 for nails or the like. Strip 1 has a struckup or pressed out projecttion 7 and a slot 8. Strip 5 has also a struck up or pressed out projection 9 extending through slot 8 of strip a. Spring 10 has ends 11, 12 respectively engaging in the loops formed by pressed out projections 7, 9.

Thus the spring 10 holds pressed out projection 9 normally pressed against the end 13 of slot 8 and the portion 9 also holds strip 5 from undue lateral displacement relative to strip 4.

In operation, when pressure is placed upon strips 4, 5 (Fig. 1) they move endwise away from each other and bow downward thus bringing springs 10, located on the underside, into action and stretching 9, 1925. Serial No. 74,308.

the springs, the projections 9 moving along slots 8. When pressure is relieved, springs 10 contract and move projections 9 back against ends 13 of slots 8 thus causing strips 4:, 5 to move endwise toward each other to raise the strips to normal position again.

Without further elaboration, this disclosure will so fully reveal the gist of the improvements that others can, by applying current knowledge, readily vary these improvements without omitting certain features that, from the standpoint of the prior art, fairly constitute essential characteristics of the generic and specific aspects of these improvements, and therefore such variations are intended to be comprehended within the meaning and range of equivalency of the following claims:

I claim: 1. In a spring construction, spaced supports and a plurality of slats extending from one support to another, each slat comprising a pair of overlapping strips, one strip havmg a slot and the other strip having a projection engaging in said slot, and a spring connecting said one strip with the projection on said other strip.

2. In a spring construct-ion, spaced supports and a plurality of slat-s extending from one support to another, each slat comprising a pair of overlapping strips, one strip having a slot and the other strip having a pressed out projection engaging in said slot, and a spring connecting said one strip with the pressed out projection on said other strip,

3. I11 a spring construction, spaced supports and a plurality of slats extending from one support to another, each slat comprising a pair of overlapping strips, one strip having a slot and a pressed cutprojection, and the other strip having a pressed out projection engaging in said slot, and a spring connecting the pressed outprojection on one strip with the pressed out projection on the other strip.

4. A spring slat comprising, a pair of overlapping strips, one strip having a slot and the other strip having a projection extending through said slot, and a spring connecting said one strip with said projection.

FRANK P. DARGY.

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