US2328243A - Chair - Google Patents

Description

Aug. 31, 1943. G. D. WOOD 2,328,243

CHAIR Filed April 28, 1941 2 Sheets-Sheet 1 f 41 v l 8072 00 4 6 www Aug. 31, 1943. G. D. WOOD 2,328,243

CHAIR Filed April 28, 1941 2 Sheets-Sheet 2 170 24 q 513 r \l i 72 u Patented m 1943 l n' 1 Glenn 1). Woo Elkhart, Ind., assign): to Posture Research Corporation, Elkhart, 11111.,3, corpora- '1 application Apruzs, 1941, Serial N6; 390,684

f comi or 155-164 This invention relates to improvements in chairs and it consists of the matters hereinafter described and more particularly pointed out in the appended claims. v n v v v The chair with which the present invention is more especially concerned is one adapted for office use and includes a seat and aback rest,

the latter being capable of aback and forth, cushioned: swinging movement with respect to the seat. As an example of a chair of this general type, reference is made tomy prior patent, No. 2,018,825, of October 29,1935. n

"One of the objects oi' the present invention lsto pro'videin a chair oi this kind an improved construction wherein the cushioningmeans for the backresti locatedin apositlon notonly substantially concealed from view but in a position so protected that the same cannot be read:-

ily reached by the occupant of thechaira A further object Dune inventionis to provide inachair of this kind, means whereby the-seat may be adjusted forwardlyor rearwardly with respect to the back rest without disturbing the adjustment of the'cushioning means for the back i l :Another object ofthe invention is mprbvme in a chair of this kind means whereby-the arm rest.

rests maybe adjusted forwardly and rearwardly with respect toboth the seat a'ndthe back-rest 30 ioningmeans for the back restor the adjustwithout disturbing the adjustment of the cush mentof the back rest.

Again, it is an object of the inventionto provide in a chair of this kind, an improved spider arrangement and upon which the arm rests, the" seat and the back -rest, along with its cushioning means are mounted with: the 'arm rests and the seat capable of a -backw'ard and'a forward adjustment thereon in 'alslmple and easy inan- I nor.

n The above mentioned objects ofthe invention,

as well as others, together with th'e advantages thereof willmore fully appear as the specification;

proceeds. I e .o lnthe'drawings; Y l Fig. 1 is a perspectivewiew oi'a chair embQdY-' ing the preferred form of the invention. i I Fig; 2 is a bottom view, on-an enlargedscale, of the seat of thechair showing the arrangement of the seatfand other parts oi! the chair upon a novel supporting member or spider;

" Figl 3 is ayhorizontal sectional view-,"on' the scale of Fig. 2, throughapart of one side'of;

also on the scale ofFiQ. 2,"thro'ugh a part of the side of the chair: as taken on the line 4-4 i Fig, 5 is a transverse vertical sectional view through a part of the chair as taken on the line 5-5 'of FigA. l Referring now in detail-to" that embodiment of the invention illustrated in the'drawings; l0

indicatesa conventional type of basefor an office chair and in which'the lower end portion of a pindle or post ll is engagedfor a rotative aswell as a vertically adjustable movement. The

' upper end portion of the spi ndle is fixed in the hub of afispider indicated as a whole atflZ in Fig. 2 The spider also includes a pair ofi'laterallyextending arms l3""and" a pair or forwardly I and laterally extending arms M which are fined at their inner e'n ds to thehub. The outerends of each set of arms l3 and I4 are connected to alplate member 1 l5. Along theouter edge of each plate member is a pair 'ofdepending bosses I6 and I1, the purpose of which will appear later.

[8 indicates the seat of theflchair'as a whole which includes a bottom I9 of wood upon which is mountedthe upholstered cushion '01 conventional construction. The s'eatwhich is engaged upon the spider 'fas will" later appear, is

' wider than the overall "width of [the spider and chair as taken on the me s- -s of Fi .1; t

Fig.4 is a front to rear verticalsectlonal-view is deeper from front to rear thalhthe overall depth of the spider. In each-platemember I5,

i alongitudinal slo'tll through which a bolt 12, carried by the seat bottom, extends to receive a wingnut23 and associated washer; Byloosening the wingnuts 23, theseat mayjbe shifted forwardly and 'rearwardly oithe spiderinto the desired ad'justed position. In this respect; it is pointed outthat the spindle u is normally dis posed in a position closerrtotheflrear" edge of the seat than the front edgethereof, as best appears in Fig. 2,

In each rear corner of the seatisa recess which best appears inIPig. 3'and in eachlateral I margin of the seat bottomisachannel crduct 25 which best appearsin Figs. 4 and 5. Therear end of each channel opens into an associated recess 24 andthe top wall of said recess is'sloped downwardly andforwardly as appears in'Fig'. a. d The inner wall of eachchannel is disposed sub n stantially coincident with the outer edge of each plate member of thespider! At each s de of the seat'is' from'front torear of the seat and is thereprovided with a horizontallydisposed base 23" that d weenie iipisl post 26 which at'its topsv end supports an arm rest 21L The bottom end oi each yjpost ,iiares 2| in said member as previously mentioned. A-

bolt, 3| is trapped in'each slot 30 so as to be movable longitudinally thereof without a turning therein or a dislodgement therefrom and the threaded end of each extends through the boss 29 to receive a nut and washer 32. By loosening the nuts'32, each arm rest may be adjusted forwardly and rearwardly onits plate member andv then locked in the adjusted position.

33 indicates the back rest member for the chair which is normally disposed between the While in describing the invention, I have referred in detail to the form, arrangement and construction of the various parts, the same is to be considered only in the illustrative sense so that I do not wish to be limited'thereto except as may be specifically set forth in the appended claims.

I claim as my invention: I

l. A chair embodying therein, seat providing means having a recess in each rear end corner and a channel in its bottom surface along one side that opens into an associated recess, supporting means for said seat providing means, a

rear ends of the arm rests 21-21 in a position a The I tioned, the backrest is capable of a forward I and rearward swinging movement with respect totheseat. l This movement of the back rest is limited by a pair of cushion action telescopic braces 36 similar to those disclosed in my patent previously referred to. As shown in Fig, 4, each bracein'clude's a tubular body 31 flattened. at one end and there pivotally: connected to its-associated back rest supporting arm 34 by a bolt an, at a point below the topsurface of the seat member. A bushing 39 is threaded on the other end of the tube and a rod 48 has a. sliding bearing in said bushing. That end of said rod outsidethe bushing; is formed as'an eye 4| which is pivote ally;connectedlby abolt 42to the front end boss ll of the associated plate, member 15 of the spider. 5 i

That portion of the rod within the tube -has a nut 43 threaded, on its extremity and. a helical expansion spring 44 surrounds that' part of the rod-between said nut and the bushing. As best appears in l' ig. 4, each brace .-36.is disposed substantially in .a channel 25- in the; seat bottom so i that it is covered from above by that part of the seat abovethe' channel, vWith this arr,angement, only a relativelysmall portionof the rear end of each brace is visible at the associated recess 24 of the seat; The front end ofthe brace disposed; above the base 28 of the associated arm restsupporting post 26 in a manner. whereby said front endof the brace is substantially -con.

. cealed. and protec ztedv in. a position where it is.

back rest as well as betweenthe arm rests and. the seat .or back rest. Thus the chair may be adjusted to the occupant so as to be restful and comfortable and assures a correct posture in use- This arrangement so dis-' ,back rest having a normal position with respect to said seat providing means,supporting arms one connected tojeach side of the back rest and each having a bottom endportion disposed in a recess and being pivotally connected to one of said first mentioned means, and resilient cushioning means for at least one of said arms having a part thereofdisposed in said channel in said one side ofthe seatv providing means so as to be covered. from above thereby and operatively connected at one end'to said one of said arms and also operatively connected at its other endwith one of said first mentioned means.

2. A chair embodying therein, seatproviding means having a recess in each rear endcorner anda channel in its bottom surface along each sidethat opens into an associated recess, supporting means for said seat providing means, a back rest having a normal position with respect to said seat providing means, supporting arms one cormected to-each side of the back rest and each having a bottom end portion disposed in a re- .cess and being 'pivotally connected to said sup- ,3. 'A chair embodying therein, seat providing means, a spider for supporting said seat providmg means and having a plate-like portion at each side thereof, means providing a bolt and slot connectio n'between each side of said seat providing means and said plate-like portions permitting of a. forward orga rearward-adjustment of the seat providing. means on said seat supporting means, a back rest havinga normal position with respect to said seat providing means, an ,arm rest at each side'of theseat providing means :and each having a part disposed under said seat provid f ing. means and engaged with a plate-like. portion 4. A chair embodying therein a spindle, a spider having a hub fixed to the spindle and a pair of laterally spaced plate members connected to the hub by arms extending away-therefrorma seat engaged on the spider, said platemembers and said seat having a bolt andslot connection whereby said seat may be adjusted forwardly and rearwardly thereon, a back rest, meansincluding side arms for. supportingsaid' back rest from said spider, an arm rest at each side ofthe seat, a generally upright postforsupporting each arm rest; each post including a laterallyinward ex-' tension engaged-;,with an associated plate member of the spider, and means for operatively connecting each post extension with the associated plate member, whereby said arm rests may be adjusted forwardly and rearwardly on said plate members of the spider.

5. A chair embodying therein a spindle, a spider nel along the bottom or each side of the seat and opening into a associated recess, back rest supporting arms for the back rest and each having a part disposed in an associated recess and there having a pivotal connection with an associated plate member of the spider, an armrest at each side of the seat, an upright post supporting each arm rest having a laterally inward, extension overlapping and engaged upon an associated plate member, a cushioning element for each arm and pivotally connected at one end thereto, the other end of each element being pivotally connected to an associated plate member of the spider and disposed above the associated post extension and engaged at least in part in a channel in the associated side of the seat.

6. A chair embodying therein a seat having a channel that opens through its bottom surface along each side thereof, supporting means for the seat, a back rest having a normal position with respect to the seat, a supporting arm for each side of the back rest and having a pivotal connection with said supporting means, a cushioning device for each supporting arm and having the greater part of its length arranged in an associated recess, with its ends disposed outside of the ends thereof, one end of each device being operatively connected to an associated supporting arm and the other end of each device being,

operatively connected to said supporting means.

D. WOOD.

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