US2450654A - Automatic adjustable chair - Google Patents

Description

Od. 5, 1,948. H. GLITSMAN ETAL 2,450,654

AUTOMATIC ADJUSTABLE' CHAIR lFiled Aug. 17, 1945 2 sheets-snee; 1

INVENTORS Hmmm G Le: TSM/wv ANn AfvrEL HaEN/a Mm dan@ ATTORNEY Oct. 5, 1948.

AUTOMATIC ADJUSTABLE CHAIR Filed Aug'. 17, 1945 2 Sheets-Sheet 2 INVENTORS HAROLD GLe/rsfvm/v M, DAN/EL Hoen/6 B* TM @ma ATTORNEY H. GLEITSMAN ET AL 2,450,654

Patented Oct. 5, 11948 wurm STATES PATENT oFFIcE 2,450,654 AUTOMATIC ADJUSTABLE CHAIR Harold Gleitsman, NewYRochelle, and Daniel N.

Hoenig, St. Albans, to said Gleitsman Application August 17,

said Hoenig assignor' 1945, Serial N0. 611,048

16 Claims. (Cl. 155-119) This invention relates to automatically ad- .instable chairs.

vThe primary o ject Vof this invention is to provide a chair having a back which is automatically to different positions in response to diierent postures assumed thereon by the user of the chair.

provision of an autowhich can be folded rm for convenience in carrying invention, but not in limitation thereof.

In the drawings:

Fig. 1 is a perspective view of a chair embodying the present invention, the back of the'chair position in which the chair is a reclining chair;

Fig. 1A is a side view of condition thereof;

Fig. 2 is a, sectional view on the line Fig. 1;

Fig. 3 is a view similar to Fig. 2 showing the position of the back of the chair as a back rest latter is seated on the chair in a more or less upright position; Fig. 4 is a sectional View on the line 4,-4 of Fig. 3;

Fig. 5 is a fragmentary perspective view of one of `the sides of the seat frame of the chair;

' Fig. `1 showing anwhich are to be considered as illustrative of the the chair in the folded "-Fig. 6 is a View similar to other form of the invention;

'wood but, of course, can

Fig. 7 is a sectional View onthe line l-'I of Fig. 6;-

Fig. 8 is a view similar to Fig. 7 showing the Fig. 10 is a,- view similar to Fig. 9 showing a modification. f

Referring now to the drawings in detail and first to the form of the invention illustrated in Figs. 1 to 5, the chair I0 of the present invention comprises a seat frame I2 and 'a back frame I 4 which is movably mounted on said seat frame. As here shown, frames l2 and I4 are formed of be formed of any other suitable material. the side members will be understood,

ing means may be in various other forms and need not, in itself, constitute the seat of the chair. The back frame I4 is provided with a back rest 36 which, as here shown, is formed oi canvas, but which may be formed of any other suitable material, the lower end of back 36 being secured to lower cross member 28 and the upper end of said back being secured to upper cross member 26. It will; be noted that the reary end portion of the seat. or connecting means 34 is looped around cross member 28, as indicated at 38, of the frame I4 and is stitched to the lower end` of the back rest 36, as indicated at 49 The-back` frame I4 is provided with a cross band 42 offabric or other suitable materiahior; supporting thel back rest 36 between the upperandlower cross members 26 and 28 when the user of the chair leans against the back of the chair. ItV will be understood, however, that said band 42 may be omitted and also that the back rest 36. Inay4 be, formed in various other ways.

When the user of thechair isyseated thereon in a more or less upright position,'the 'weight-olf* thauser on the seat orl connecting means34 transmitted. toftheI back` iframe- I4 whereby. to.. efiiertfa` force thereon` pivotally moves the bacl; frameforwardlyA about the axisofthe fulcrnm means until'thelateral projections or;r pins 32 engage theiorwarf'.v` endsi42 'cli-'theY companiony grooves i 30, respectively, ot' thev sidefmembers ll 6 i the seat frame I2.' In'this positionorconf.V neeiinsmeans 34, melatten when formed eifel@- ric 'orf the like, is bowed downwardly, along a cuneo. line' extending between cross members, I8; 'aadf On ihevthelt haria whe`11-iheuser0fihe, chair is seated thereonin anfuprightpositionjand Wishes@ @Sisma a relnnemsiiisn n the Chain; baclfram'e I4, is"antomati'cally moved pivotally backward about the axis of "the,v fulcrum means, constituted-,bv cross 22 iniesponse' to .member the pressure exertedby themser` on` the back oi thechair in assunn Thisbakwafd-mqvemsnt of; the bask; frame I4; to ,its reclining position is facilita tedbyr the natc uial shifting' of` the A users body forgwardly, Qi the. seat 34v whilepressing i against the. bach; restsgot theirrrlef- I4 this ,fPfWard 'Siftiaa mevsmentf the users body res ,Y @tine in easies- Qf. maigres, which opposes the. backwardl movement othe, bfack frame I `4- bythe pressure. o f thefnsersfbaclr.: thereon. Hovevlzy ii; will @understood-that; so, nos., als' the iserjpurvoselr @enseigner-force Onithebakf the Chariot iiltinailie samebale wardly than isf: exerted by the.V user .onf the seat. orf'connecting means 34 i"or` holding theslatera'l extensions or pins 32 in `their positions attire,` fiiward ends of the companion. grooves `3l), occurs when the'uservishes,iQ-,shadesrpmaslt ting .position to a. reclining ypositionpn' Vthe chair, the back @i the, Chair is, autqmatiallvi movedbakwardiyfto a position in vanuit-,provides al back, rest. for the. user, in theilatters, realising: pos'ioily TP?, operati@ 0f, fthliir-#C en? 319.11. clily understood from the fact that. w'lfienvtlxiel chair is unoccupied and the,bachrtl'iereoiislin,itslfor, ward position theseat or connecting means` 34 isl slack, while, on. the other. hand, when thebacl, frame' isl in its rear position, the ,seat or 'oo nr'ieot-V ing means 34,is,less slack or maybe,`taut. V Thus,l thej connecting means 34 has' rear., planar extensibility andV 'c ontraetabiiity, whereby the back oftheichair.l is, movablefroinA a; "forward positionv to fa backward position response. to pressure of the. userslbak thereon whenfthe user. correspondingly'. alters hissng a* reclining post u refthereont fabric and in various other ways.

Ii desired, the grooves 42 may be so designed that the rear ends 44 thereof are located so that they are engaged by the lateral projections 32 when thebaclr frame is in its rearmost position,

but as shovvn, this is not essential since the backwardmovementof the back frame I4 can be limited by the tension of the connecting means or seat 3 4l oncross member 28. It will be observed that the lower end portions of the side members 2 4, which pivotally engage the cross member or iulcrumV inean`s'22 also have a sliding engagement with.y said cross member, transversely' thereof,

sine the bachv framev I`,4. moves',upwardl`y, whileit, is being moved rearwardly',` In this connection, itwill, be observed, that the intermediate :pertionfV 4G of the lower edge oi each groove `42is ecn/ted.' upwardly from the forward` edge, portion1 48 of saidgroove for, the ypurposeofiA prgovidinga degree ofresistance to releasably (oppose, thefbackwarnd, movement of the baci; traine 'Igijfrom 'itsjforward position, whereby theuser, of-,the chair..isn-.equinedll to exert theproper arnourn--of p` is sure,there,'on in orderfto move the back, frame rearwardly when, theusel" wshsfwessvme amenities positioned the chair.` 'Itjwill be understood'that theneedQ fprthe user thus'toA consciously dndpuippsfllllyl press uponthe back of theehainwhenhe ,wishes to assume a reclining positionl thereon, prevents inadvertent backwardfmovenient, of, 'thel`v hack' frame I 4, when the userV intends; to, sitting positionwithhis baci;l resting agains back of the chair. It will be Anoted` thatthesupperf, edseportion Qsroove, 391s reoessdgasidicaied at; 511, to provide, .Clear-arfr, 'andavfiid binding` of; the fivmpanion lateral extension. 3,2, inthe. ferr" ward endy of' vsaidgroove when the user 'leans against the back frame I4 in itsforwardposition inorder totllt the,sameb'aclfgwafrds It will be observedl'that, aslshwn tithe'.

in Fig.) LA,

` the chair I0 is foldable, iorconvenience Tin' car-ry.-

af.' limited-liront to, 70`

T5, tubular metal stock, anding or shipping, this` being permitted by'l therelea'sable engagement of tlfie side members 24 of the back .frame with thelcros's member or fulcr-um means 22 'and-by the pivotaliengagementtcfithe. lateral extensions orpins 32s. ofl-lthe'back'framel with the side member I6 of theseatiframeiinthe companion, grooves 30;, thereof; In. this connection, it;V will .be understood-,that .pinsZ-v are .prei-t, erably o: Circular `peripheralcont,our-sto. facilitate the pivotal movement of said pins inthescom,. panion grooves. Asvheregshown, thalQWer Qirts of the side members IS of the seatframeaifpmf,

videdwithuteouts ornandfonenipesezto facili- A tate the carrying of the chair when the lattenisi inits@1aed-,Condition- Rl ngi-HCW insita@ Fissi ff/919,11 will the Chair mA embaiiesfiasamauaderlv and: principles of; train-festiva asentadas il@ form of the chair I0 illustrated in Figs. l to d5, hereinbeiore .desc ibed. Inthisforrniof; the Vi x essaies Webalia.

back 'framdlMi "are form remain in, a Y

which corresponds to the cross member 22 and which, like the latter, provides fulcrum,means the side members of the back frame |4A, is integral with the sides IGA of the seat frame 12A. The cross member |8A which corresponds to the cross member I8 of chair IU cross member 28A which cross member 28 of chair l0 is similarly provided with lateral extensions or pins 32A which engage the side members of the seat frame .|2A' in grooves 30A which correspond to the grooves 30 corresponds to the lower bers 54 thereto. However, as illustrated in Fig. 10, the separate members the grooves 30A may be flattened end portions means cross band 42, respectively, of chair I0. It will be understood that chair IBA operates in the same way as chair I as described above.

kIt is apparent that chairs of the present infering Iwith the front-to-rear extensible and contractible characteristic of the connecting means as described above.

Finally, it will be understood that various other changes in the details of construction and of the appended claims.

ther it will be understood that, as usedv in the aims, the term chair includes within itsY position or in a position for ina reclining position.

Having thus described our invention, what We claim and desire to secure by Letters Patent is: i 1. An automatically adjustable chair comprising av seat frame having spaced connected side members, a movable back tion while supported on the chair.

3. An automatically adjustable chair comprising a seat frame having spaced connected side back frame about said axis.

5. An automatically adjustable chair comprising a. seat frame having spaced. connectedside membersa movable back frame betweenlsaid side enibier t 10 said back frame at a point on the latter above their rear 15. An automatically adjustable chair comprisoves, said in said grooves and movable therein longitudiont to rear plane connectthereof, said seat frame having a cross member eleasable ref V irst mentioned cross member, said sides of the ned @FOSS ICjd 35 rear portions thereof, said grooves extending al grooves in their rear 40 frame in said grooves on said edges, means anof said grooves, said sliding and pivotal movements thereof on said fanSVelSely thereof on which said back frame has a pivotal engage- CIOSS member at the ment below said connecting means said back means hal/111g e 11mframe being movable toward the forward ends i Fear Plane COHHeCP- 50 of said grooves by the force of the weight of the red to provide releassaid grooves Y grooves toward the HAROLD GLEITSMAN.

DANIEL .HOENIC me backwardly REFERENCES CITED rst mentioned The following references are of record in the me being dsem file of this patent: ned cross meni- UNITED STA'I'ES PATENTS K Number Name Date t 322,943 Large t July 28, 1885 Y adJuSt-eble @half @Omplls- 1,968,333 cross et ai. July 31, 1934 es in their rear FOREIGN PATENTS ck frame having Number Country Date gaging said sides 309,647 Italy July 12, 1933

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