US2371777A - Elastic bed bottom - Google Patents

Description

' March 20, 1945. R RETTER ELASTIC BED aom'om Filed Feb. 13, 1943 FIG. 2

INVENTOR Rudolf Retter BY 5. M

ATTORNEY Patented Mar. 20, 1945 ,ELASQZZE I IIIZQTTOM moaowmtter, Application February 6 Claims.

expensive construction and which includes little nor-nometal in itsstructure.

l r A further: obj ect.-.0f the invention is .to provide satwood =bed spring-vzhichis so constructedeandaso nmountedsin its frame that itprovidesl a tcomfortcable; 1111311318,. -.noise1ess-and-. sanitary bedtbottom. s-A: ffuntherrlobj ect. ofthe .inventiomis to provide ca WOQdv spring rbed .bottom in-tvvhich' the ran ge-of ;:flexurezofathe resilient wood. cushioning elements t islimitedtq protect the: elements:- against breaktageiandan-in mhich the: cushioning elementsrare so combined as to efiectively absorb impact shocks tatenear the limits FOf movement; of the cushioning, elements.

rWith, the above. and 1 other objects in 1 vievv, rthe .jnventiommay be.v said -to vcomprise the. bed.-bot- ,-,-tm asillustrated thaiaccompanying-drawing "hereinafterdescribed,and particularly setz-for-th .tin-thelappended claimstogether: with such varianations-land modifications, thereof. as willbe apparoentto rpersons skilled ,in the art to which they inventionpertains.

Reference should-be :had to the accompanying adrawingci forming apart of this. specification in which: A v

F gu e. 1;is.a -perspective.viewdof a bedbottom embodyingwtheeinvention;

'l'FFigJZisa fragmentary. sidenelevation. onwan enlarged scale showing the springtsupportafor the central portion of. the springbody;

I; Fig. 3 his-a2 fragmentary: @end. elevation", of the .bed bottom;

JEig. Anis a; fragmentary. v side in elevation corresponding. to" Fig. 2; showing theshockabsorlbing .iaction...of the edge slats .when "the cushioning springs are, flexed to. near their ,1imit,of.- moveamentnarid i Eig.'.5nis; aiiragmenta ziaanialternative .tormeof central cushion for -the es rlin lbddyl I g .1 .As villn'strated in t the eaccompanyingzhdrawingf thewbed bottomnof the present. invention has; a so, rigid rectangular, frame. composed. ofside bars I .aandnend bars 2. .Thevsidehand end barslare prefera1q1y..in. the form of boards mhichtproviden a asubstantially' rigid} vframe preferably of suflicient strengthnto provide a .bed. frame whens suitable -..supponting legsnarea attached thereto 2 and of a aheight; sufficient to. permit ithe-springs to have: an adequate rangepfmovementwiththe framer-resv ing on the floor. V

rye sidelelevation showing soummeuuomo 13,1943, SeriabNo. 415,104

..The frame =is -rpreferahlm .constructedtoflaniinexpensivetlight weight-moods? sucmasipine hemlock 'ggumwood i0! wredwood, ..Both.-the v side -bars ands theiend bars :are disposed onzodge \andtthe 5 -bottom= edgesyoft the endmbars .araiiush withmthe abottomedgesiofitheisiderbars. .JIfhe endhars tare -eof-lgreater swidth lthanathelsidet-bars l leandnare qrabbeted wt provide. end portions; 3 which-over- .-hangr.the:ends ofithe side-bars. .wAbovemtheatops ref the r-sideehars;- (theeend that's hare provided (throughout: their "lengths wtthk-spacedtslots A.

Thea side- :bars I are providedwith elongated recessest 5 :inwardlytpf, the end harstz andwbe- I .rtween the\.-inner.-.ends.of-.the;recesses Sethere is :1 providedwa ,centralt raised, portion. 6 which has Jan.- elongated recess 'lr Minion-provides.abutments tBa andvfi at-oppesita endsmfi the; raised portion fi.

-,abutmentst 81 and 9 the-anion the l springresting 20.011 whet-abutment 8, beingwattacheddtheretoflhy tmeans. of,,a..-screw l lqand the opposite; freesend beingwslidable Qn-Jthe ,abutmentLB. iThe spring. 1 0 amaybe aanetal' spninghutdspreferahlya straight strip! of elm, :second zsasui-table toughwand resilient-wood. 1 n r The frame, including the springs [0, provides .alsupport; .torla springbodymhich oonsistspf a trseries-of longitudinal islats. l 2. formed oiresilient ,woodandhaving narrowedeendvpontions lflmwhich *mlsndabiy at, in .ltheislotsm nor .the..efid"bars. 5n cross: slat lkdsattached hylsuit'ablex means ,such l screws 1 4 5 touthe tundersides-eoff-theeslats I I 2 substantially midwaylbetweentheir endsaridthe ends. oi the cross slat-ts I 4 .-restnuponl the. spring 1 0 substantially .midway; betweenlthet endsl'there- .vof. The slats l 2 .are,,preferablymade-of straight grained white or yellow pine ande'thacrossislats "I tare. relativelx xjgidso thatihe central pontions =1 oi theslats l 2,move. substantiallyein unison. "L'Ihe 40 spring bodyt extends theiull. .Widthlof the. frame, nthaoutermost slats .IZbeingZdispOsddiretly over the side bars I, the slats 12 being straight and supported a heightabovelthetside v ciently to .engagmthe bottoms of l the recesses without breaking. The; limited .movenient wa1-- slowed -by .the moss slat M prevents qexces'sive l flexure' oft the slats J 2 an abruptztransition from .tailflexibles to arigid;supportlsuchtastis ordinarily "15 provided :when-custfioning springs arewstopped L A-leaf spring;(It bridgesmthe space bettveen the r, growth ,liickory, or. other;

vent ilexure them.

wardly by the loads imposed thereon. When the 1 edge slats 12 are flexed downwardly far enough, to rest on the abutments 8 and 9, as shown in" overlying the top edges of the side bars so that the downward movement of the said cross slat is limited.

2. An elastic bed bottom comprising a rigid rectangular supporting frame having parallel side bars and end bars connecting the side bars, said bars being in the form of boards on edge, the end bars having their top edges above the top edges of the side bars and having slots above the edges of the side bars, resilient longitudinal wood slats having their ends extending through the slots in the end bars and slidable therein, a relatively rigid cross slat attached to the longitudinal slats intermediate the end bars, the ends of Fig. 4, the portions of the edgeuslats between j ab utments 8 and 9 form a stifi auxiliary spring supplementing the actionof the spring Ill. The

weight imposed upon the spring body is transmitted to the edge slats through the cross slat. I 4 and this weight is yieldingly supported by both the edge slats I 2 and the leaf springs In which together provide a relatively stiif spring for absorbing shock near the limit of flexing movementl The edge slats l2 thusserveto protect 11.

the springs 'l 0 again'stthe imposition of excessive loads and to prevent the noise and jarring action which would result from the impact of the spring body against fixed stops. While the initial cushioning action of'the spring I0 is desirable, it will p be apparent that an effective cushioning action said cross slat overlying the side bars of the supporting frame, and springs mounted on the supporting frame and yieldably supporting said cross slat above said side bars.

3. An elastic bed bottom comprising a rigid rectangular supporting frame having side bars and end bars in the form of boards positioned on edge, the end bars having their top edges above the top edges of the side bars and having a row of slots adjacent their topedges, said side bars each having a longitudinally extending recess in its top edge substantially midway between its ends, a normally fiat leaf spring bridging each recess and attached to thetop edge of the side would be provided by the slats l2 should the springs in be omittedor be broken in service.

In Fig. 5 of the drawing, there is shown a modifiedspring support for the central portions of the I slats I? which maybe employed. In this modification a cross slat Ma has its ends overlying the side rails la and'a cross bar 16 connects the side rails la immediately beneath the cross slats Ma.

. Compression coil'springs ll are'interposed between the cross bar lfiandthe' cross slat 14a, springs 1! serving to cushion the downward movements of the'slats I 2 and the engagement of the slats Ma with the side bars m serving to pie- The bed bottom of the present invention is composed jwholly of inexpensive materials and little labor is required to assemble the parts. The entire structure is of light weight and is easily handled. All portions of the device are readily accessible for cleaning and all parts may be easily replaced if damaged or broken. The slats are capable of independent flexing to conformsubstantially to the form of a'person lying thereon and, while the flexing w thereof is limited, the cushioning capacity is hig n v I It is to be understood that variations and modifications of the specific devices herein shown and described for purposes of illustration, may be 4 said end bars having their upper edges above the top edges of the side bars, resilient longitudinal slats having their endsslidably connected to said end bars, said slats being closely spaced substantially throughout the width of the frame and normally positioned above the top edges of the side bars, arelatively rigid cross slat attached to the undersides of said longitudinal slats intermediate the end bars, the ends of said cross'slat of the slats l2 sufficient to break bar adjacent one end of the recess, and a spring body comprising a series of resilient longitudinal wood slats having their ends slidably mounted in the slots of said end bars and a relatively rigid cross slat secured to the undersides of said resilient slats and having its ends resting upon said leaf springs substantially centrally of said recesses.

i 4. Anelastic bed bottom comprising a rigid rectangular supporting frame having side bars I and end bars in the form of boards positioned on edge, the end bars having their top edges above the top edges of the side bars and having a row ofslots adjacent their top edges, said sidebars each having a longitudinally extending recess in its top edge substantially midway between its ends, a straight resilient wood strip bridging the recess of each side bar and attached at one end to thetop edge of the side bar, and a spring body comprising a series of resilient longitudinal wood slats having their ends slidably mounted in the slots of said and bars and a relatively rigid cross slat secured to said resilient slats and having its ends resting upon the resilient strips centrally of said recesses.

the top edges of the side bars and having a row of slots adjacent their top edges, said side bars each having a longitudinally extending recess in its top edge substantially midway between its ends, a' straight resilient wood strip bridging the recess of each side bar and attached at one end to the top edge of the side bar, and a spring body comprising a series of resilient longitudinal wood slats having their ends slidably mounted in the slotsof said end bars and a relatively rigid'cross slat secured to said resilient slats and having its ends "resting upon the resilient strips centrally of said recesses, the outermost of said resilient slats being positioned over the top edges of said side bars whereby saidoverlying slats engage the ends ofsaid strips resting'on the top edges of said side bars before the said strips engage the bottoms of said recesses. 2

6. An elastic bed bottom comprising a rigid rectangular supporting frame having side and end bars, the side bars having their topedges recessed midway between their ends and between the central recess and the ends thereof to provide a pair of spaced abutments in the central portion of each side bar, the end bars having their upper edges above the upper edges of the side) bars, and a spring body comprising a series of parallel longitudinal resilient wood slats which are supported above the top edges of said side 7 cross slat connected to said resilient slats substantially midway between their ends, said cross slat having its ends overlying the central recess in the top edge of the side bars, the outermost of said longitudinal slats being positioned over the top edges of said side bars and being engageable when flexed downwardly with said spaced abutments to resiliently absorb shocks.

RUDOLF RE'I'IER.

7 t 3 bars and which have their ends slidably connected to saidend bars, and a relatively rigid

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