US1700520A - Spring - Google Patents

Description

Jan.29,15929. A 1,700,520 L. STICKLEY SPRING Patented Jan. 29, 1.929.r

cierres stares LEOPOLD s'rIGKLEY, orraYE'rTEviLLn, nsw Yoan.

SPRING.

Application filed July 23, 1925.` Serial No. 45,591.

- This invention relates to a certain new and improved spring structure, as for illustration, a bed or couch spring structure, or an automobile spring cushion, a seat cushion, etc.

The main object of the invention is the production of a new and novel spring structure of great flexibility and resiliency readily conforming to various shapes determined by the application of weight thereto. l

Other objects and advantages relate to the details of the structure, all as will more fully appear from the following description, taken in connection with the accompanying drawings, in which: Y f

Figure l is a plan view of a structure of this invention with portions broken away.

Figure 2 isa section on line 2 2, Figure l. Figure 3 is a section on line S-S, Figure i. 4Figure 4 is a section on line 4 4, Figure l. Figure 5 is a section on line .Vi-5, Figure l.

The structure as here illustrated comprises v a pair of end rails l preferably formed as shown, of comparatively heavy angle iron. The side rails 2 are likewise formed of angle iron, but as shown, are of' comparatively light construction and have their opposite ends respectivelyl 'resting upon the horizontal portion of the angle irons constituting the end rails 1 and secured thereto in any suitable manner, as by riveting or spot welding, altho the latter may be preferable for the purpose of, in this instance, forming a rigid rectangular frame. 4

This fraine 3 carries a plurality of longitudinally extending bars 4v spaced as shown substantially uniform distances apart and having their opposite ends connected tothe horizontal portion of the angle irons constituting the end rails l and in this illustration these longitudinally extending bars 4 each carry a pluralityfof coil springs 5 secured thereto in any suitable manner, as for instance, by having the lower end of each coil seated inra separate fold or loop 6 formed in the bar. Y

Each bar 4 as here illustrated, is of sectional construction and includes two end parts 7, an

' intermediate part 8 and two helical springs 9 which respectively connect the opposite ends of the intermediate portion 8 to the end sections 7 whereby each longitudinal bar 4 is in itself independentlyof the springsv 5 capable of considerable extension and depression to thereby increase the resiliency and fleXibilty of the structure.

i The side rails 2 each carry a tension bar l0 adapted to rest" upon the horizontal-portion of the angle iron forming the Side rail and connected to the side rail only at its opposite ends, as for instance, by the rivets 1l, as pei preferably by spot welding so as to leave the liaps best illustrated injFigure 5, or perhaps Y intermediate portions of the tension bars free for slight lateral movement under stress applied by cross-bars 12. each connected at their opposite ends to the respective tension barsY l0 in any suitable mannenas by spot welding,.riveting or the like, and preferably as shown, extend under seine and over others of thelongitudinal bars 4, and each cross bar or lateral bar l2 is also of sectional construction and comprises two end, parts i3, an intermediate part `14', and two helical springs l5 connecting the oppo-v site ends of the interinediatesection 14 to the adjacent end of the opposite end sections 13 respectively.

Obviously the number of helical springs in- These cross-bars are terposed or constituting a section or sections of the lateral bars or the longitudinal bars may be varied so long as the bars include a Y longitudinally extensible helical spring. In this illustration, the spring structure comprises a central portion formed of crossing bars, preferably unconnected to each other, and said bars being slidable with respect to each other bar with which contact is had, said portion including the central sections 8 of the two intermediate longitudinal l bars and the central sections 14 ofall the lateral bars l2 so that the central portion isr wholly supported upon helical springs. Surrounding this central portion is a marginal portion which comprises the nend sections of the longitudinal bars 4 and the end sections `13 of the lateral bars l2, and the intermediate l sections 8 of the two outsidelongitudinal Vbars 4, the latter sections being theinselve supported by helical springs 9.

The spring structure supported upon the framework 3 and the lateral and longitudinal bars may be of any desired form, c and as shown, consists ofthe coil springs 5 connected at their upperends by a band or wire'frarning -16 tiedto the marginal springs by clips 17,

and this framing 16 has its opposite sides connected by cross-strands 18 and its opposite ends connected by longitudinal strands 19 rwhich are tied to the yspringslby means of links 20. However, this construction is inerely illustrative and may be widely varied, the

essential feature of this invention being the' jeeting inwardly from the framework, in-V termediate lateral and longitudinal bar sections crossing each other and slidable vupon each other, the intermediate longitudinal bar sections passing alternately over and under the lateral intermediate bar sections7 ant each intermediate bar section being positioned between and Secured to two aligned end bar sections by helical springs, th'e helieal springs of the lateral bar sections being inside of the outside longitudinal bar seotions. Y

2. A .spring structure comprising end rails and side rails connected together to forni a rigidfralnework, longitudinal bars extending between and secured to the end rails, flexible tension bars extending along the side rails secured to the side rails at their opposite ends toleave their intermediate perdons free to vHex with respect to Said Side rails, eross-bars having their opposite ends connected to the tension bars and each of said crossbars to leave the intermediate portions of the side rails substantially tree of tension ieing or sectional construction and comprising a helical .spring section.

8. A spring structure comprising end rails and side rails connected together to torni a rigid framework, longitudinal. bars extending between and secured to the end rails, flexible tension bars extending along and throughouty substantially the entire length of the side rails and secured to the side rails at their opposite ends to leave their inter- LEOPOLD STICKLEY.

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