US1248956A - Spring-cushion. - Google Patents

Description

W. W. VINENY..

SPRING CUSHION. APPucmlou man Am, wu.

Tabbed Da. 4l, MM?.

iennirr tinten WILLIAM W. VINCENT, OF KENOS-IA, WSCONSIN, ASSIGNR T0 THE 'VINCENT-ALVTARD COMPANY, OF KENOSHA, WSCGNSIN, A CGRERATION OF WISCONSIEN.

SPRING-CUSHION.

1 Specification of Letters Patent.

Application led April 4, 1917. Serial No. 159,833.

To all whom t may concern:

Be it known that I, WILLIAM W. ViNcnN ri, a citizen of theUnited States, residing at Kenosha, in the county of Kenosha and State of Vlisconsin, `have invented certain new and useful improvements in Spring- Cushions7 of which `the following is a specification. i i

Myinvention concerns various features of novelty and value inresilient cushions, especially, but not exclusively, suchY as are used for the backs .of automobile and similar seats, and ordinarily composed of a bank or set of spiral-springssuitably fastened` together and covered with a hair-filled or similar cushion forming a part of the spring structure, thus-requiring a maximum quantity of hair or other filling to maintain a rounded or curved contour which would sag, and in any case, would limit the flexibility or compression of the spring according to the amount of filling material used. This problem, which has heretofore been unsatis* factorily dealt with and remained unsolved until the inception of the present invention, resided in the difliculty of constructiong a spring structure of this type in a way to ad mit of complete compression, unhindered by expensive hair or other substitute fillings, and at the saine time present a curved suporting-element under'all degrees of compression, thereby preventing sagging, which sagging would prevent the springs from being completely collapsed or compressed when occasion required, as well as injure the rounded or smooth appearance of the structure. It is required, furthermore, that the top part of the cushion shall not only maintain its properly-shaped contour when uncompressed, but shall compress fully and Without undue distortion under pressure.

In the preferred embodiment of the invention the spring-structure is composed of a plurality of hour-glass spiralsprings and their securing or fasteningmeans, except that the top row of such springs is composed of springs of a shape the reverse of hour-glass, that is to say, they are longi tudinally convex instead of concave by reason of the central convclutions being of largest diameter with gradations in size to the ends of the springs. Stated somewhat otherwise, the nicely rounded longitudinal shapes of the uppermost springs are substantially that of the corresponding parts of the cushion. ln order to afford unhampered compression of these upper or inarginal springs, thus permitting the cushion to yield to a maximum extent, and yet holdy fication, and throughout the various views of which like reference characters refer to the same parts.

ln this drawing:

Figure l is an end view of the springstructure with the cushion shown in dotted lines;

Fig. 2 is a fragmentary plan of the appliance of Fig. l with the cushion omitted;

Fig. 3 illustrates in elevation the manner of securing the longitudinal top wires to the corresponding convelutions of the upper spiral springs as viewed from line of Fig. 2. i

Fig. t is a plan of the structure shown in Fig. 3, and

Fig. 5 is a section on line 5-5 of Fig. 4.

Referring to the drawii'ig, it will be observed that the Spiral-springs 10, 10, of all of the rows, except the top row, are of hour` glass or double-cone form with their ends suitably fastened to and locked against displacement with respect to the front and back wire frames ll and l2 respectively. These helical springs may be of any desired conformation and obviously, the shapes of the springs are somewhat immaterial, although those of the style shown have distinct advantages well recognized in the trade. The spring-structure as a whole, is covered with a suitable fabric over which a cushion 13, ordinarily filled with hair, is positioned, and such cushion at the top usually has a nicelyrounded contour transversely of the structure. ln this device, to provide such con` tour to the cushion, the springs 14 of the top row are longitudinally convex in general shape as shown, such springs desirably lofi having their middle convolutions of much larger size with graduations in diameter therefrom toward both ends. The exact shape of the springs, of course, depends somewhat on the desired form of the super-- ltiall aarallel wires l5, l5 disnosed lenUtl wise the structure but crosswise and above the springs proper to the coils ot which they are rastened by bends, loops, kinks, or the like, is.

By thus forming the upper springs and connecting them together the shapevot the cushion at this point is maintained and the spring structure, nevertheless, is capable of complete collapse and compression. Stated somewhat othewise, the means which prevents the cushion from sagging into and between the springs, in no way interferes with the compression of the spring structure. Neither does it, by bowing, distort or otherwisek objectionably act upon the cushion during the spring` compression.

To those skilled in this art it will be obvious that many minor mechanical changes may be incorporated into the structure Shown and described without departure from the invention and without the sacrifice of any of its substantial beneits and advantages.

I claim:

1'. A spring-structure of the character described having4 a marginal row of substantially-straight spiral-springs arranged transversely of the structure, and means fastening together corresponding eonvolutions of said springs and disposed transversely only of suoli springs, substantially as described.

2. A spring-structure of the character described having a marginal row of substantially-st 1aight longitudinally-convex spiralsprings, and means disposed transversely only of said springs and secured to the corresponding convolutions thereof, permitting unrestrained compression of the springs, substantially as described.

3. In a spring-structure of the character described, the combination of a plurality ol" rows of spiral-springs, a marginal row thereoltl being equipped with means to prc vent sagging of a superposed cushion between the convolutions thereof without restricting complete compression of the s Jrings, substantially as described.

4. ln a spring-structure oiE the character described having a marginal row oi substantially st night, longitudinally curved spiral-springs, and means secured thereto preventing sagging of a superposed cushion between the convolutions thereof without restricting complete compression of the springs, substantially as described.

5. ln a spring-structure of the eharactei described having a top marginal row of substantially straight, longitudinally curved spiral-springs, and a plurality of substantially-parallel connecting members disposed at the tops of the springs of such marginal row and connected to the corresponding convolutions thereof, whereby to prevent sagging of the superposed cushion between such convolutions yetpermitting complete compression of the springs, substantially as described.

ILLIAM W. VINCENT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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