US1263162A - Adjustment for the backs of type-writer chairs. - Google Patents

Description

y I 0.1. TRAVERS. ADJUSTMENT EORTHEKBAC/KS 0F TYPE'WRHER CHAIRS.

:APPLICATION FILED OCI'. Il. IQII.

Patented Apr, 16,1918. l

'Il Y Il Il All ATTORNEY.

EUNTE S T FEES,

CHARLES Jprnnvnzae, or ronT WASHINGTON, WISCONSIN.

ADJUSTMENT non THE BncKs or TYPE-WRITER CHAIRS.

Specification of Letters Patent.

Patented apr. 16,1918,

Original application filed September 4,1917, Serial No. 189,517. Divided and this application led Dotober f 11, 1917. Serial No. 195,876.

To all whom it may concern: `Be it known that I, CHARLES J. TRAVERS, a citizen of the United States, residing at Port Vashington, in the county of Ozaukee, State of Wisconsin, have invented a new and useful Adjustment for the Backs of rlype- Writer Chairs, of which the following is a specification.

This invention particularly relates to improveniente in chairsV intended for the use of type-writer operators and others wherein the back-standard is adjustably connected with and supported by rearwardly disposed back-supporting-arms.

Generally, in this class of chairs, it has been customary to provide for the raising and lowering of the back-pad by connecting the latter upon the .back-standard in some adjustable manner, various styles ofdevices being used for this purpose.; also, to pivot the lower end of the back-standard upon or between the supporting-arms by means of a clamping-bolt and wheel, such devices being employed to afford a pivotal adjustment for the back-standard.

The objects of the present invention are to .provide a simple means for connecting the lower end of the back-standard to the supporting-arms, such means being of-such construction as will-provide for botha pivotal and vertical adjustment of thewbackstandard, so that the back-pad may be rlgidly attached to the back-standard and yet to all intents and purposes, be adjustable both vertically and pivotally.

Other objects andadvantages of the invention will hereinafter appear and the novel features thereof will be particularly pointed out in the claims.

Referring to the drawing- Figure 1 is a top plan view of an adjustment for type-writer and otherchair's (the front portions of the spider-arms being broken away to conserve space), a backstandard being shown connected thereto in accordance with l:my invention, .the backstandard being shown in transverse section, as are also the rear ends of the Standardsupporting arms and the-supportmgyoke;

F ig. 2 is a side elevation of the same, the back-standard being broken away at its upper portion and its lower portion shown in vertical section; and 5 Fig. 3 is a detail in perspective ofthe tilting yoke employed to adjustably connect the lower end of the back-standard to the standard-supporting arms.

Similar numerals of reference indicate similar parts in all the figures of the draw- Ing.

In practising my invention, it will be understood that it may be used in connection with any chair adjustment wherein are employed a pair of rearwardly disposed backstandard supporting-arms,Y and, therefore, that the invention is not limitedin its application to the chair-adjustment herein illustrated and described, the novel features of the latter forming the subject-matter of a companion application iiled September 4th, 1917, Serial Number 189,517, of whichv this is a divisional application. c f

In the present construction .of chair-adjustment, 1 designates the opposite spiderarms, preferably formed of angle-iron, as is usual, and relatively positioned so that their upper horizontal flanges extend outward. These arms are connected ,at their rear ends by a transverse brace 2, the ends of which overlap the 'arms and are riveted in position, as at43. The ends of the arms are provided with apertures 4, forthe reception of screws, by means of which the .Seat v (not shown) `may-be secured in position.

`At about their middles, the arms maybe connected by a bridge 5, the ends of thc bridge being connected to the vertical flanges of the arms in any desired manner. The bridge 5, is provided with an opening 13, at its longitudinal center, and receives the upper end of the usual supporting-post or adjusting-standard 14, the upperend of the latter being usually upset, as at 15', tomake a permanent connection between the bridge and the post. l

Having its opposite ends located in suitable apertures formed in the vertical flanges of the two spider-armsand immediately in Vertical tension-bolt 17, the same near its lower end carrying an apertured springsupporting'waslrer 18, and'below thev same a'v hand-wheel 19 the latter threadedon theA bolt.

Across-brace 26, formed of sheetn1etal,`

and"h"a\fing down-turned 'ends is interposed between-'the' armsy 16, y.and serves to conii'eci-,-. the same, the cross-brace being located 1in-fm f disposed-terminals respectively designated as`24: and25. The upper1 terminals-ene gage underk th'erbrae'e '26' connecting tlreftiiio stan'd'ardlsupportin-g "arms 16, and' lthe lower terl'niiialsl rest upon the-'washerf 18'; It will be' obvious that l the tendency of the' termfifialsPoffthelspringsis to`g spread'7 so that the lower terminals being? sup'ported by; the washer 18; thei 'upper 'terminals will exert a lifting tendency to vthe a'z'msf-1`6, andv 'the lati ter will therefore fyielfclinlglyresist the .weight ol'theffoocupaiift of theseat asitis -exerted against tlre'fba'ck-, Vall as will ihereiiia-ter 'aps peari It will befobviousfthat thisresistance may`5 bei regulated byf proper manipulation ofithe handlwheel 19, through which the washer18mayb'e raised and lowered 011- the tens'oirboltgr v Betweeiir'th'e rear'e'ndls' of the 'armsflglis' located'aii ai'i'g'gail'ar` or' Uslfapecl' slreetimetal yokeQS, the 'forwardly'. 'projecting side-walls 31,1 oli'1=which,ar`e -pivota'lly connected-'near their-f'Y rear? ends.- yto the"r said-'- arms by means offA rivets .30,1 oppositelfy located and y passed through YYapertu-resI '29,' I foi-'med in the* sidewalls :of ithe yoke'V and 'through l correspondirrgape-rtui'e-sformed in* lthe" arms:yr ByeA tiri-s arrangement; the yoke isycapabfle 'ofV tilting or .assuming v'inclinedipositions in' respect to safidfzarms! 16;?y Near their fronitf end`s, the walls Blof the yoke are provide'diwithfop@ plosite lsiiiiiflarcompanion slots @32,the same being:fconcentriet fwith vrthei 'f apertures 29 `and hence the-rivets 30,*.anfdf`the arms lfiaref'prtr vided withv l opposite'ijransyerse-I perforations 33, ooincid'ent withr said`l slots@ Through these slots-J andAX perfo'rations is`` passed" a clam'pi-"ngbo'lt Slgfat! one? end' off wlii'ch is located-aliandwheel 35.'v Ilprefei1i to mount uponthie boltiafaird interpose"between the walls-B'llofthe yokefat this point,E a spa'eini "-i sleeve* 36','- against the f ends* of which f 'the walls-*31'g of" the 'yoke may `befcl'ampied 4tby I'the action of the boltf'anfd its hand-wheel It will bei 'apparentE that the hand-wheel Ebeing V sulilciontly loosened5uponthe bolt, the yoke may be tiltedv to any position within the limits of its slots 32, yand by retightening theJ wheel 4the'yok'e'will be clamped' between thearms 16 randthe` endsof the spacingsleeve andthus firmly held.A

Within the yoke 28, is mounted the lower end of the back-standard 37, and these two' elements `may beiconiaected ini suitable mlanneis-either rigidly or adjustably, as desired. As, however, I prefer that the backstandard be made-vertically adjii'fst'ablefv in tlrefyoke, wh'erebyy'an adjustable connection between-'f the beek-parli andi said standard may -beomittedan-d the back-pad raised l"and lowered bya f raising and f loweringI4 offfthe standard, irrthis instanceI f proa/ide` fior-corr-y nectnglsaid"lbaekestandardadjustabiyrwth; in the yoke. By so doing, I noti-oilily am enabled Qtoattach thef back-piad- (not 5 shown) permanently and rigidlyw to f the'A standard, thuseforniiirgf a umorei *rigid structurer but lI save' theV --costof the usual sep aratef Aadj ustable'eomiecton: Moreoverglfavod:project# ing parts at this pointthat-arefaptito catch oir -the clothing 'ofthefoccupaht olf-the'chain and -iifnallyrg I 'lilakei a'mluch better-'appearing chair: f

To this-fend i 1P provide-1sthevlowerijend lof th'ebacIr-stairdard37, wtlrfafvertieal slot 38:,- the same beiirgdisposed lengthwise-:theyoke 2e' andf arirrsf 1 16- oriY thechairladjustments Through? i thisI slot Kandi al su bleh aperture 3.9i; irmedfn the reariwali :oithefyokegus passed"a'clampiiigfb'olt 40?. TV' headof the bolt bears upon the -ro-itfacetofl the standard at eaehf= side of theslot 387, and upofn- :thefwrear end or thefts-1t;- beyoirdi the rearl wall :off the yoke; r is threaded-1.a' Mandi WheelL4 this o1"` similari equivaient l arraiig fmentitlwill bei apparent 'ltheifstaifc'lard mayifbe 'raised'Y and 'low-ered', andi with tgthe" backpad carrieaftlrerebyguso thattheflatter may b'ef Y'positieliedito suiftthe easel' andcomfort oi' the occupanti? Atfthesametimeysueh ease'a'rrd -4comfortlmayloefurther@ contributed to bfy-rv 'tilting theel starida nditSlyOke whereby other s inclined-:to 4the Vdesired degree.

Having described* invention; what I claim, i-is: Y f

13 In:aiehairradjastmeat; thercombimti'oni with v-oppositerearlwardly disposedstandardel supportingfyarms, of U-shap'ed lyok'efpiif-V otedbetween? thel l arms and provided? near its'i'iee end with fcurve'd 'slots concentric with its pivots; clanipingeboti-passed througl'l i ftheiarmsifaiird @the curved? slots, a clampngiflranawhee threaded.'0n-thema, and a'ba'ekesupp oitiiigf standardnrount'edin the yokei 2; 11n 1a'@chair-adjustment;the combination with opposite rearwardly disposed =standfrndf-I supportingfarmsgvofla Mishaped Ikyokeff `pving the opposite sides near their free ends provided with slots curved and concentric with said pivots, a clamping-bolt passed through the slots and the arms, a spacingsleeve carried by the bolt and interposed between the sides of the yoke, a clamping hand-wheel threaded on one end of the yoke, and a back-standard carried by the yoke.

3. In a chair-adjustment, the combination with rearwardly disposed standard-supporting arms, of a U-shaped yoke tiltably and adjustably mounted between the same, and a back-standard vertically adjustable in said 7oke. b l. In a chair-adjustment, the combination with opposite rearwardly disposed standardsupporting arms, of a Ueshaped yoke tiltably and adjustably mounted between the same, a back-standard provided at its lower end with a longitudinal slot, a clampingbolt passed through the latter and the yoke, and a clamping hand-wheel threaded n one end of the bolt.

5. In a chair-adjustment, the combination with opposite rearwardly disposed standardsupporting arms, of a U-shaped yoke pivoted near its rear end between the same and having its opposite sides near their free ends provided with companion curved slots concentric with said pivots, a clamping-bolt passed through said slot-s and through corresponding apertures ormed in the arms, a

back-standard longitudinally slotted from front to rear mounted in said yoke and adapted to be vertically raised and lowered therein, a clamping-bolt passed through the longitudinal slot of the standard and through a corresponding aperture formed in the rear wall of the yoke, and a clamping hand-wheel 1Ifiounted on the rear threaded end of said olt.

6. In a chair-adjustment, the combination with opposite rearwardly disposed spring supported standard-supporting arms, of a standard receiving device pivoted between the arms, and a back-supporting standard vertically adjustable in the said receiving device. v

7. In a chair-adjustment, the combination with a rearwardly disposed standard-support, of a standard receiving device pivoted thereto, and a back-standard mounted for vertical adjustment in said receiving device.

CHARLES J. TRAVERS.

Witnesses:

T. A. BOERNER, I-I. W. BoLENs.

@epica of this patent may be obtained for ve cents each, by addressing the Commissioner o! Patents,

Washington, D. C.

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