US2604143A - Folding auxiliary tray provided seat - Google Patents

Description

22, 1952 A. z. BOYAJIAN 2,604,143

FOLDING AUXILIARY TRAY PROVIDED SEAT Filed Sept. 17, 1949 4 Sheets-Sheet l INVENTOR. ("freed Boya/z'an ATTORNE).

y 22, 1952 A. z. BOYAJIAN 2,604,143

FOLDING AUXILIARY TRAY PROVIDED SEAT Filed Sept. 17, 1949 4 Sheets-Sheet 2 IN V EN TOR.

04/r'ed Boya/z'an BY A TTORNE Y.

July 22, 1952 A. z. BOYAJIAN $604,

FOLDING AUXILIARY TRAY PROVIDED SEAT Filed Sept. 17, 1949 4 Sheets-Sheet 5 2e 2g r 37 25 f8 r r I L23 (63 iv 90( 5 INVEN TOR.

Ql/red Boyer/Ian A TTORNEYQ A. Z. BOYAJIAN FOLDING AUXILIARY TRAY PROVIDED SEAT Jul 22, 1952 4 Sheds-Sheet 4 Filed Sept. 17, 1949 of the occupant.

, j ustecl position Patented July 22, 1952 v s TA'r%Es PATEN FOLDING AUXILIARY TRAY PROVIDED sEA r Alfred Z. Boyajian, Farmingdale, N. Y. Application September 17, 1949, Serial No. 116,336

The ,present invention may be said to reside in a seat structure, embodying allofj the functional features and characteristics of a high chair, to be removably and temporarily, associatedfand employed in conjunction With a full size, con'- ventional chair whereby an'auxiliary seat is provided thereon particularly adapted for useby infants or children. Thus thisfauxiliary seat readily and easily enables. the conversion of a full size or standard chair into ahigh chair, having all of the usual and customary appurtenances of sucha chair, and permitsof its reconversion to its original condition for normal or adult use without change in, or damage to, any of the parts or components thereof.

Among its other objects, the instant invention contemplates an auxiliary seat that may be collapsed or folded compactly into relatively small space for storage or transportation when not in useandthe mere extension of, which for use'wlll automatically position andcorrelate all of its several elements orcornponents for immediate association with a standard chair.

' Another feature of. the subject seat'is its adaptation and adjustment to the child or infant occupying it thereby imparting flexibility in its use to the structure and improving the comfort Moreover this adaptation and adju-stmentof the seat .tendsjt-o hold the 00,011-

pant in place therein and reduces the hazardsattendant on the useflof the inflexible, nonrad- ,;i ustable high chair heretoforejgenerally used.

' With the above and other objects, in View, as

will be apparent, this invention consistsin the construction, combination and arrangement" of; partsflall'as,hereinafter more fully described,

claimed and illustrated .d'r'awings'whereinf in the accompanying Fig, )1 is a front elevation of 'anf'auxiliary seat con'struct'edinaccordance with the present in ventionshowing it extended for use in conjunctio'nwith a standard chair;

I Fig". 2-is a side elevation "thereofshowing it extended and mounted on a standard chair of the type commonly used in diningroom or kitchen, the chair being shown in,,broken.1ines. and an Iadjustment of the tray with reference to the back of theauxiliary seat being also illustrated inbrjoken or phantom lines;

' Fig.3 is a plan view of the present auxiliary seat illustrating the tray thereof adjusted tothe positionishown in ,phantom'lines in Fig.2;

Fig. l is a side elevation .of the auxiliaryseat r nyeonapsed or folded for. storage or transportation and shows. it extended in phantom lines; V I

Fig. 5. is a bottom view of one of'the adjustable 'armswhich carrythe tray showing themeanslby which the arm may-be locked in a selected adseat for the chair.

15 Claims. (01. 155--127) of furniture, fixed and unalterableiii' their construction and very limited injuse; For example the'infant rapidlyoutgrows the high-chair, or quicklybecomes conscious of its'difference from the chairs used by adults vandresents it. :In

either event the use of 'astandard or adult chair is almost mandatory, and entails makeshift ex- .Dedients to adapt it to the child. "The best that can be saidfor such adaptations isthat they raise the elevation'of the child from the sieat of the chair but, like the high chairy fno' adjustment to the child'is possible nor s any rovision made to hold the infantorchild place. 'Moreover, the*1high"chair is comparatively expensive and comprises an extra article of furniture more or less unsightly and used only on occasion.

, The present invention'overcomes all of these manifest obj ections and inadequacies of the highchair and of the expediently adapted standard chair by providing an auxiliary seat having a back by which this seatmay'be removably suspended fromthe back or a chairsoas' to be po- Tsitioned above and pproximately parallel to-the A' tray is associated with the jal'lxiliary seat and is capable-'of' bodily'adjustmentftoward and away from saidbacki *All of the components are. so arranged and'associated that they maybe folded one aboveithe other to an overall thickness not materially greater than the. combined thickness of the seat, tray and back and with, a superficialarea approximating that of the seat alone; Thus the present auxiliary seat maybe storedinj very little space or-rnay be easily transported. I, v v

. Referring to the drawings, the numeral l 0 designates the seat of the collapsible; auiiiliary ch'air of the presentinvention. This seat is a relativelyflat', rigid member made of any suitable-material, preferably wood. The width and front'to rear depth'pf this seat, are preferably somewhat less than'jthe corresponding dimensions of seat ll (Fig'fZ) of; the conventional or ordinary [chair I I with which'fthe device of the, present invention is associated so thatwhen 'thefseatfll is inoperative position above andpar lcl tO'thB seat. l-l 'oi thelordinary chair, the. marginal portion of the. seat He may be used'as afoot'restby theoccupa'nt of the auxiliary seat l0. A, rigid L-shaped bracket; comprising" ahorizontalleg 'l 2 and anv upright substantially vertical" leg". I 4, is

; from of a all 3 secured to each of the respective side edges of the seat It) adjacent to the rear edge of the seat. The horizontal leg members I2 are secured to the edges of the seat II) by means of screws I3 or equivalent fastening means. The upright legs I4 of the brackets project up above the upper surface of the seat to a distance exceeding the thickness of the tray, hereafter to be described. The lower part of the chair back I5 '(whichis preferably a unitary piece of wood) is interposed between the upstanding bracket members I4 and is pivotally connected to the brackets by pivot" members I6. The aligned pivotal axes of the of the seat ID that when the back is folded down to horizontal position substantially parallel with the seat, it is spaced above the upper surface of the seat a distance sufficient to permit the tray (hereafter described) to be interposed between the'back and seat. I

A rigid, elongate metallic guide member I1 is secured to each of the lateral edges of the back I5, these guide members I1 extending from a point near the'top of the back down to' a point approximately midway the height of the back. Throughout the major;portion of its length each of these guide members 'I1 comprises a part which is spaced from'the adjacent edge of the back (Fig.1) and which is provided with an elongate guide slot I8 (Fig. 2). At each of its opposite ends the 'guidevmember I1 has a flat attaching portion which engages the edge of the back I5 and. which receives a fastener member I9, for

example a screw, whereby the guide member is rigidly secured to'the back.

I The upper extremity .of each guide member is shaped to provide a vertically elongate socket ,(Fig. 8) designed to receive'the shank portion 2 I- of a suspension hook 2|, the shank portion having a head at its lower end which is received in an enlargement of the lower. part of the socket whereby the hook is prevented from escaping the socket. LEach hook preferably consists 1 length of stiff steel rod-stock, the straight shankfportion being arranged within thesocket ,20 as above describedand the. upper portion'bf the rod being bent twice, at right angles, to. form a hook of such dimensions that it may be hooked ever the upper edge of the back II of a conventionabcha'ir, thereby'to suspend the auxiliary chairof [the present invention inoperative position, as shown in Fig. 2. Preferablythehook portion2l which engages the back 'of thechair is padded, for example, by slipping a length of rubber tubing over the rod which'forms the (hook.

"'A rigid tray 22, oflanysuitable mateiial' and construction, for examplefwood, is'fadjustably associated with the seat and back. Desirably this tray is of somewhat less front to rear width" than theseat, but, as hereillustrated', it is of a transverse-width somewhat gre'ater'than that of the back, thereby providing for the convenient attachment of the arms as hereafter described.

The' t'ray is'so connected to the seat that in relative'positions of the seat and tray they are disposed in substantially parallel planesg A prel'ferred'means for so connecting the tray and seat isby the use of a pair of substantially U-shaped members, preferably madejof stiif steel rod-stock, each, of these U-shaped members having a' base portion 233 (Fig. l) which is straight and'which isdisposed against the under surface of the'tray (parallel tothe front. edge of the latter) and pivotally connected to the tray by meansofj bearing brackets 234 rigidly secured to the underside of parts I6 are so spaced above the upper surface 4 the tray. At each end of each base member 233 the rod material is bent at substantially right angles to form the parallel legs 23 of the U -shaped member. The free ends of these legs 23 are again bent, at right angles, to provide pintle elements having their axes aligned, and these inwardly directed pintle elements 235 are received in aligned socket openings in the opposite edges, respectively, of the seat member. The pairs of socket openings which thus receive the inwardly directed pintle portions of the two U-shaped members are spaced apart horizontally, as indicated at 236 and 231 (Fig. 2) while the bearing brackets 234 which receive the respective base portions of the two U-shaped members are spaced by the same distance from front to rear on the underside of the 'tray 22. With this arrangement the two legs 23 motion without possibility of cocking or binding.

'At each side of the auxiliary chair the tray is connected to the back by an arm of variable length. Preferably each arm comprises a hollow,

rigid sleeve member 24, for example of sheet steel,

here shown as substantially rectangular in vertical, transverse section (Fig. 6), and having a longitudinally extending slot 25 in its under face.

At its rear end, each of these sleeve members is provided with an inwardly directed horizontal pivot pin 26 (Fig. 5) having a head which is located between the slotted portion of the guide I1 and the edge of the back, the shank of the pin sliding in the slot I8. Each arm also comprises a bar 21 (Fig. 6) which may, for example, be of wood, which is slidable telescopically within the corresponding sleeve member 24, and which is hinged at its forward end at 28 to the rear edge of the tray. The width of the tray exceeds that of the back sufficiently to permit the forward ends of bars 21 to be hinged directly to the rear edge of the tray. Thus,'when the chair is folded, the arms may lie in the plane of the back at opposite edges of the latter. This slidingconnection between the sleeve 24 and the bar 21 per-.

mits the tray to be moved bodily from front to rear relatively, to the back. In order to hold the tray in adjusted position, provision is made for locking the bar 21 at any of a series of predetermined positions relative to the sleeve 24. As shown in Fig. '1, the bar 21 is provided with a central, longitudinal groove 32 in its underside which is aligned or registered with the slot 25 in the underside of the sleeve 24. A latch bar 29 (Figs. 5 and 7) is arranged within the groove 32 of the bar 21 and is pivotally connected to the bar 21 by a horizontal pin 30 (Fig. 5) adjacent to th forward end of the bar 21. This latch bar 29 is preferably of stiff sheet metal of a vertical depth such that its lower edge normally projects down urges the forward end of the latch bar 29 downwardly, the forward end ofthe latch baradjacent to the spring constituting a fingerpiece'to which upwa'rd pressure'may be applied for swinging the latch bar so as to move its rear end downwardly. Bordering the slot 25, the sleeve 24 is provided with a s'eriesof spacednotches, or'recesses 35 (Fig. Sidesigned for selective engage;- merit by'the' lockingitooth 3|. In any selected adjusted position of the bar 21, relative to the sleeve 24, the chamber 36 of the bar'approximately registers with one or another of the recesses'or notches 35; andth' tooth 3| is engaged within saidwnotch or recess. The latch ba'r'29 moves bodily with the bar 21 when the latter; is adjusted relatively to the sleeve 24, but such movement is only possible when the forward end of the bar 29 has been moved upwardly in opposition to the spring 33 sufficiently to, disengage th tooth 3| from'the retaining notch or recess 35. When the teeth of the two latch bars have been disengaged from the recesses 35, the bars 21 may be moved forwardly or rearwardly within the sleeves, thus bodily moving the tray from front to rear. .When properly adjusted, release of the latch bars permits their teeth to enterre- 'cesses 35, thus rigidly holding the arms at adjusted length and retaining the tray with its rear edge at the desired distance from. theforward face of the back.

o prevent the bar. 21 from being withdrawn completely from the sleeve 24 and to arrest and limit its forward movement, a stop '34 (Fig.5) is provided, projecting downwardly fromthe recessed portion of the. sleeve 24, this stopbeing contacted by the tooth 3| when the tooth is in position to be received by the foremost recess 35.

Whether or not the tooth actually enters said recess, the tooth will engage the stop 34, thus preventing over-travel of the bar 27 in a forward direction. I

As illustrated, a locking toggle may be -,arranged at each side of the chair structure. Each toggle comprises a link 31 pivoted to one side edge of the seat I0, and a cooperating link 38 pivoted to the edge of the back, preferably at the lowerend of the guide H. The toggle links 31 and 38 are provided at their proximate ends with angular extensions 39 which are pivotally connectedat 4i).v When the links 31 .and- 38 are aligned, the extensions 39'overlie one another, butwhen the chair is collapsed (Fig. 4) the link 31 is parallel to the edge of the seat I!) While the link38 is parallel to the back I5 and the extensions 39 are substantially aligned with each other; spacing of the folded seat and back is such, by

However, as illustrated in Fig. 4, the

reason of the height of the bracket members l4, that there is ample room for the aligned extensions 39 and for thelocation of the tray between the seatand back,

H, with the parts in the collapsed pos1t1on :shown in Fig. 4, it be desiredto set the chair 1structure up in operative position, as shownin -Fig.- 2,;the user will firstgrasp the upper portion of -;the back and swing the latter to -the upright position. He then grasps the tray near its opposite lateral edges and lifts the latter directly up. During .the first portion of this movement,

vthe pivot pins 25 at the rear ends of the sleeves -24 .move up alongthe slots 13 in the guides l1, this upward movement continuing until, as diagrammatically illustrated in .Fig. 9, the inveluded angle A between the upper surface of the tray "'22 and the arm '24 substantially equals the included angle-'Nbetween the forward face of the back and the arm 24. Further upward movement of the tray. is accompanied by a downward movement of thepivot pins-zfiinthe slots vl8',-*this downward movement continuing until the pivot' pins have reached the-lower ends of the slots.

The slots are of suchlengthgthat when the pivot pins are in the lower ends of the slots, the arms are approximately horizontal.

Since the arms-swingabout the horizontalaxes of the hinges 28; theweight of the arm tends to hold the pivot pin'23 at the lower endof the slot Since collapse of the device, after it has once been set -up,-can only take-placeby upward movement of the pins in the slots 18, it is'manifest'that the parts aresubstantiallylocked in position when the pins are in the lower endsof the slots. -Rcarward movement of thetrayis directly opposed by the reaction of the pinfle against the rear wall-0f the slot l8, and such slight component of upward force as there may be, due-to any slight upward inclination-of the arm,- is opposed by the friction of the pin in the slot.

The toggle linkage, comprising the parts 31 and 38, locks'the chair against accidental .coliapsesince, in the set up condition of theldevice. the pivotal axisat -40 lies slightly forward of a line Joining the pivotal i connections between the remote ends of the links 314and 38 with th'e:.-seat and back-,- respectively. "Although a toggleidevice has here been shown :by way of example as a" convenient means to hold the'seat and back in operative relation of use; it is obvious that-other and equivalent conventional locking meansrsuch as a set scre-wor latch, may be-employed; After the-chair has been set up, the tray may be moved from front to rear (after first idisengaging the teeth 3! from notches 35) so as to adjust the spacing between the back and the rear edgeof the tray to correspond to the size of the child'occupying the chair; 1 w

While the device thus described is particularly intended as shown for suspension from the backfof air-ordinary conventional chair, it is manifest that it may be set down onto the chair seat if desired, or suspended from some other sup- I portff For example, it may be suspended from the back of-"the seat of a motor vehicle and, if intended for such use, it is manifest that the hooks 2! will be made of appropriate size to engagewa seat back of greater thickness-than that shown herein.

' One desirableembodiment of'th'e invention' has been shown by way of example'but it istobe understood that theinvention is broadly inclusive of any and all modifications falling within the scope of the'appended claims.

What is claimed is: i 1. In combination, in a device of the'class described, 'a'seat member, rigid brackets fixedly secured tolopposit'e side edges, respectively, of the seat member, each bracket comprising a-portion projecting'upwardly above the upper surface of the seatda back interposed between the upwardly projecting portions of the brackets and pivotally connected to said brackets to swing to'and from a position substantially parallel to' an'd spaced from said seat member, a tray, parallel links interposed between each sideof the tray and the corresponding side of the seat member'and pivoted at their ends respectively to the trayfandseat member whereby the tray may move relative to,

whilefbeing maintained parallel to,the seat member, and extensible arms interposed between and hinged at theirrends respectively to the tray and to the back, the hinge axis at the rear end of each arm being slidable upwardly along the edge of. the

back-from normalposition to permit folding the zontal axis to and from a position substantially parallel to and spaced from said seat member, a

tray, parallel links connecting the tray and the seat member whereby the tray may move toward and away from the seatmember and will always remain substantially parallel to the seat, extensible arms hinged at their forward ends to the rear edge of the tray, and a sliding, pivotal con nection between the rear end of each arm and the back, and releasable locking means for holding the back and seat in the relative position of use.

3. In combination, ina device of the class described, a seat member, a back hinged to the seat member to swing to and from a positionsubstantially parallel to and spaced from said seal:

member, a tray, the pivotal axis" about which the back swings being horizontal and spaced above'the upper-surface of the seat a distance such that when the back is. folded down into parallel relation to the seat it is spaced above the upper surface of the seat a distance suflicient to accommodate the tray between the back and seat, parallel links connecting the tray and seat member whereby the tray may move toward. and

away from the seat member and will always remain substantially parallel to the latter, arms connecting the tray and back, each arm comprising two relatively telescopic members whereby the length of each arm may be varied therebypermitting bodily adjustment of the tray from front to rear, the forward member of each arm being hinged to the tray and the rear end of each arm being provided witha pivot which connects it to the edge ,of'the back, the back being provided .with guide means for the pivots whereby the latter may move-up and down along the edges of the back.

4. The combination with a seat member, of brackets fixedly secured to the seat member and having portions. which project above the upper surface'of the seat member in alignment one with the other transversely of the seat member, a back pivoted between the projecting portions of said brackets to swing to and from a position where it is substantially perpendicular to the seat to a position where it is substantially parallel to but spaced from the seat member, releasable means for holding the back andseat in thenormal operative position of use, a tray, parallel links permanently connecting the seat and tray wherebythe tray may move toward and away from the seat member and the backand will always remain substantially parallel to the seat member, arms comprising telescopic portions connecting the back and tray, said arms being pivoted at opposite ends to the tray and back respectively, the axis of thepivotal connection between the rear end of each arm and the back being slidable upwardly from normal position along the .edge

,ofthe back to permit folding the back downward- .ly,- the lengths of Ithearms varying as the positionof the tray is changed, relatively to the back,

and means for locking'the telescopic portions of the respective arms mes age positiogn of adjus't mea 7 toward and away from theformer and to maintain the tray'substantially parallel to the seat member during said movement, whereby the tray may be. positioned approximately flush against the seat'member between it and the back, variable length arms interposed between and pivoted at their ends to the tray and back to'rest in the planeof the back when the latter rests parallel to the seat member, the axis of the pivotal connection between the rear end of each arm and the back being slidable upwardly from normalposition'along the edged the back to permit folding the back downwardly and a toggle interposed between the back and the seat member with the pivot between its'arms off set laterally to permit one arm to rest in the plane of the back and the other arm to rest in-the plane of the seat member when the back and the seat member are parallel one to the other as aforesaid.

6. The combination with a seat member, of a 7 pair of aligned brackets fixed to the seat and having portions which projectabovethe upper surface thereof adjacent one of its edges, aback hinged' between the projecting portions ofsaid brackets to swing from a substantially vertical position to-a position spaced from and substantially parallel to the seat member and vice versa,

'means for locking the back and seat in the relaside of the tray, a sleeve slidingly pivoted to-each.

side of-the backto reciprocatingly receive the aligned bar therein, and 'a'disengageable lock associated with each bar and sleeve 'toreleasably and selectively secure'theb'ar to the sleeve.

-'7; -The combination with a seat membenof a "pair of brackets fixed to the seat having portions which project above the upper surface thereof 1 adjacent one of its edges, aback hinged between the projecting-portions of said brackets to swing from a substantially vertical position to a position spaced from and substantially'parallel to the seat member and vice versa, means for locking the back and seat in the relative, operative position of use, a tray, a pair of parallel links pivoted 'to and interposed between end portions of the seat member and tray to support the tray at all times parallel to the seat member and provide for its movement toward and away from the seat member, a bar hinged to'each side of the tray, a

- sleeve slidingly pivoted to each side of the back to reciprocatinglyreceive the aligned bar therein, a lock associated with each bar and sleeve to releasably and selectively secure the bar against reciprocating movement relative to the sleeve, and

a pair of toggle arms on each side of the assembly,

one pivoted to the seat member and the companion arm to the back, the adjoining end portions of said arms being angularly offset with the extremities of said offset portions being connected pivotally one to the other.

8. A collapsible chair comprising a seat, a back and a tray, hinge means uniting the seat and back, releasable means operative to hold the seat in normal position substantially at right angles to the back, extensible arms connecting the tray andback, each arm being hinged at its front end to the tray and being pivotally connected at its rear end to the back, the axis of the pivotal 'connection between the rear end of each arm and the back being slidable upwardly from normal position along the edge of the back to permit folding the back downwardly, I connected to the seat, corresponding links of the respective pairs constituting the parallel legs of a rigid, unitary U-shaped piece, the bases of the two U-shaped pieces being spaced apart and parallel to the front edge of the seat, and means pivotally and permanently uniting each of said bases to the tray.

9. A collapsible chair comprising a seat, a back and a tray, means permanently connecting the tray to the back, said means comprising extensible arms, each arm being hinged at its forward end to the tray and being pivotally connected at its rear end to the back, the axis of the pivotal connection between the rear end of each arm and the back being slidable upwardly from normal position along the edge of the back to permit folding the back downwardly, hinge means permanently uniting the seat and back, parallel links pivotally connecting the seat and tray, and means rigidly connecting a link of one pair to the corresponding link of the other pair whereby the connected links are constrained to move in parallel planes, each link being so pivotally united to the tray as to rock about an axis parallel to the forward edge of the seat. I

10. A collapsible chair comprising a seat, a back, a tray, means permanently connecting the tray to the back, said means comprising extensible arms each hinged at its forward end to the tray and each pivotally connected at its rear end to the back, the axis of the pivotal connection between the rear end of each arm and the back being slidable longitudinally of the edge of the back, hinge means uniting the seat and back, a pair of parallel links arranged at each side of the seat, means pivotally and permanently connecting the upper end of each link to the tray, the

lower'ends f the links rocking about axes ex- 3-- tending transversely of the seat, and means constraining corresponding links of the respective pairs to rock through the same arc.

11. A collapsible chair comprising a seat, a

back, a tray, parallel links connecting the tray and seat, hinge means connecting the back and seat, and telescopically extensible arms connecting the tray to the back, the arms being hinged at their forward ends to the tray, pivot means connecting the rear end of each arm to the back, the axis of the pivotal connection between the rear end of each arm and the back being slidable longitudinally of the edge of the back, the links supporting the tray for movement from front to rear.

12. A collapsible chair comprising a seat, a back, a tray, parallel links connecting the tray and seat, and hinge means connecting the back parallel links pivotallyand seat, releasable means operative to hold the seat substantially at right angles to the back, said links supporting the tray for movement from front to rear, a pair of hollow arms, each arm being hinged at its rear end to the back,-the hinge axis at the rear end of each arm being slidable longitudinally of the edge of the back, a bar slidable within each hollow arm, hinge means connecting the forward end of each bar to the tray, and latch means for holding each bar in selected position of adjustment within its respective hollow arm.

13. A collapsible chair comprising a seat, a back, a tray, hinge means connecting the back and seat releasable means operative to hold the seat substantially at right angles to the back, parallel links supporting the tray so that the latter is capable of movement from front to rear while always remaining parallel to the chair bottom, a pair of telescopically extensible arms, each arm being hinged at its forward end to the tray and at its rear end to the back, the hinge axis of the rear end of each arm being slidable longitudinally of the edge of the back, the tray being movable bodily from front to rear relatively to the back without disconnecting the tray from the arms.

14. A collapsible chair comprising a seat, a back and a tray, hinge means connecting the back and seat releasable means operative to hold the seat substantially at right angles to the back,

arms hinged to the rear edge of the tray, pivot means connecting the rear ends of the arms to the seat back, the pivot means being slidable longitudinally of the back, the seat and tray normally being parallel and spaced apart and substantially perpendicular to the back, and parallel links connecting the seat and tray, whereby the tray is movable downwardly from its normal position to a position where it is close to and parallel with the seat, and the back being movable to a position closely parallel to and above the tray.

15. A collapsible chair comprising a seat, a back and a tray, hinge means uniting the seat and back, releasable means operative to hold the seat substantially at right angles to the back, parallel links connecting the seat and tray and constraining the tray to remain parallel to the seat at all times, arms hinged at their forward ends to the rear edge of the tray, the rear ends of the arms having studs which slide in elongate slots at the opposite edges of the back, said studs normally being positioned adjacent to the lower ends of said slots, the chair being collapsible by moving the studs upwardly along the slots until the angle between the arms and trayis substantially equal to the angle between the arms and back, and then moving the studs downwardly until the back is substantially parallel to the seat and tray.

ALFRED z. BOYAJIAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 540,034 Swan May 28, 1895 540,384 Hall June 4, 1895 796,276 Wolff Aug. 1, 1905 1,431,291 Davis Oct. 10, 1922 1,688,225 Beloblavek Oct. 16, 1928 2,317,894 Doty Apr. 27, 1943

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