US1461602A

US1461602A - Fitting for revolving chairs and the like

Info

Publication number: US1461602A
Application number: US477073A
Authority: US
Inventors: Robert K Dawson
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-06-13
Filing date: 1921-06-13
Publication date: 1923-07-10
Anticipated expiration: 1940-07-10

Description

July 10, 1923. 1.461.602

R. K. DAWSON FITTING FOR REVOLVING CHAIRS AND THE LIKE Filed June 13 1921 Ill ' the legs.

Patented July 10, 1923.

ROBERT x. DAWSON, or GUELI'H, ONTARIO, CANADA,

FIT'IDTG'EOB REVOLVING CHAIRS THE LIKE.

Application filed time 1a, 1921'. Serial 110-. an.

To all whom it may concern Be it known that I, Roannr K. Dawson, a subject of the King of Great Britain, residing at Guelph, in the Province of Ontario, Dominion of Canada, have invented anew and useful Improvement in Fittin .for Revolving Chairs and the like, of which the following is a specification.

This invention relates to fittings for revolving chairs, and more articularly to the means for securing toget er the legs-of a. chair and to means for adjusting the height of the seat of the chair. i

The objects of the invention are to provide in a chair base, means of improved construction for grippingor engaging the upper and lower edges of the legs so as to facilitate the-assembling of the chairs; also to provide-a chair basein which thelegs of the chair are clamped together by means of:

the usual upright chair spindle; alsoto provide means improve construction for adjusting the seat'of the chair with respect to the base thereof; also to improve the construction of chair fittings of this kind in other respects hereinafter specified.

In the accompanying drawln s:

Fig. 1 is a fragmentary side ovation of a chair fitting embodying the invention showin the same applied to the legs of a chair.

ig. 2 is a fragmentar central sectional elevation thereof on an en urged scale. 0

Fig. 3 is an elevation of the lower portion of the fitting detached from the chair legs.

Fig. 4 is a sectional plan view thereof on line 4-4. Fig. 2.

Fig. 5 1s atop plan view of the lower leg on aging plate.

ig. 6 is a fragmentary sectional elevation of the chair base on line 6-6, F g. 4.

A represents the legs of a chair which terminate at and are secured to the hub portion of the chair fitting. The chair legs are preferably provided at their inner ends with enlarged parts or shouldered portions a, pro'ecting beyond the upper andlower edges of e legs, and corner pieces a of usual construction are preferab y arranged between The means for securing the le together are preferably constructed as to lows- The upper faces of the legs A are adapts to be en 'a ed by means of a sheet metal plate or B preferably having a peripheral downwardly turned flange engagm the edges of the shouldered portions a o sired, the upper vided with cylin the legs. These-flanges also serve to hold; the corner p eces -a'-inplace between adjacent legs. he lower faces of the legs and the corner ieces are engaged by a correspondln p ate Bbhavmg an upwardly turned nge b, and-this plate is preferably prov ded with a pluralit of upwardly extend ng, substantially cy indrical or portions b extendin into corrcs ondingly shaped holes in the fiiwer faces 0 the. legs A. The cylindrical portions 6 are. preferably formed integral with the plate B by stamping or forming in suitable dies. If deplate B may also be pror1 cal projections of this type but these projections are preferably omitted from the upper plate as shown in.

the drawin s. The rejections are provided with c lmdiucal'wa. s which in entering into the ho es in the legs, securely hold the legs in place'with regard to the plate B and which take theplace of the usual wood screws heretofore provided for securing the legs to the lates of the chair hub. The plates B an B may be made. of comparatively thin sheet metal so thatthe cost of manufacture of the same is ready reduced. In order to prevent the platesB and B from bein bent or otherwise distorted, owiu to t effect that the are made of relatively thin metal, suite is reinforcing flanges or members are provided which ongage the upper and lower leg engaging platesto hold the same in correct relation to' the legs and prevent the buckling or warping of the plates may e subjected. In the construction shown for this purpose, reinforcing disks, flanges or members C and C. are provided which are adapted to engage portions of the leg engaging plates. These reinforcing membars are preferably made somewhat smaller than the plates B B and the lower relnforcing member is preferably made of sufiicient size to cover those portions of the lower leg engaging plate which are provided with the bosses or projections b, so asto hold these bosses secure y in engagement with the chair legs.

The reinforcing members may be pressed into clamping engagement with the leg engaging plates by any suitable means, clampmg nuts D D being employed in the particular embodiment of the invention shown, which may be moved in any suitable manner into positions'to cause'the reinforcing memplates due to strains to which the.

hers

with the legen'ga' 'in 'lapesehd theep'lhtesiiiito c m g en agement with to-engege the leg engagin letes. the paa tlcnlazi' co'nstrilctioh sfioi 'nhn' th" drawin these nuts'engage an upright central 1m member esshqne s n th form of a central spin e or stem E of the chair and which extendscentrell between the legs and corner pieces a. 12m lower portion of this centralilpiight mem'benis screw threaded and b turpin either one of the-elem ifigniit t" reon, ee nuts; to: gther \Vlltll? the '"rinfprcin'gflan'ges 01" parts thewper 'anddbwier' was of the legs. The rdihfoxdihgdisk's or fleiiges C'C may, if desired; "be formed "integpsll' with the" nuts D DJfAny otherineansfor pressing the reinfp'rcin timbers" into ''nga l'nent with the filiite's'B B" may be'employ ""B imam; O fltl'L-IS a mament, the veinforcing disksl'oi 'fl'ztngeh iin'i'p the 'pliites agiiihsttfie'1egs;'sdthate chang of shepe offth ieih'foifiiiig'disks' is entirely prevented, a'ziitl in the Cilfi oftlie Lower'ie engaging; pimetne cylindricziFpoit-ions or bom'esw are seci'ii'ely heldin'e'ngegement in the'ho'les inthe legs: Thishtiiietifletion' he's the"adv illntag e ofehtiz 'lfll'y-elimihittingi the hee of siiiws in 'sechriilg thelegs to' t 1e h'ub poi-- tion" of, the chair and "thereby saves a, consigerahleidi'noi'xnt offtime and expense in the a" mbliflg of'tlie 'chali'r 'The eonstruction' iifs'fehe'furthe aflv'ehtiwe tliag in case tlie l gs dlfthe'ehiii'zshrinkdii'e to other caus'ee? ti hten'edoh th'e indle so as to se'cuily clihp the l'e'gsf" n ordei'"to prevent the n'iits'fiom beeoiiiing lodsend on the spindle, set'scrfie firp'r'eferebly rovi'de'diii the units which iillfghg-"th'e' sp'ili "'it'ndprvent' releltiv iiiove'meiiij' be weeii thenuteend the spindle. "By"s6ci1riiig'"the spindle rigidly in the chair'f 52196; a; very rigid chaif con st'fuctionis'prod'liced amid loet'motifon be tii'eehthe .eat dfthe cii'aiir endtlie'base is coxl'"ideltxblj"=rednced owing to the fect'that the'looseiiess'br lost'x'noti'o'n'can only be betive'enthwseht' hndthe spindle and not-beht'e fe'ii theh 'dse :ind the spindle. Since this use iiiotion-iix' ilh'be closef't'o the s lit by means of'thisi cons tinction, the amount of sn'cli motion is co'i-tespohdinwly reduced.

The s'z it '(hot'shoi yh) of me chziir ma be ivothllysup'poited on the spindle E in'nny ei id mzihrier, for ei'mrii'glethe chair sent ifia'y seciiidtd'e shite 1e spider includ ing arms F ri 'dly connected to a'centijs l conneiitinq' me bei' Thisconnecting miiih'e'r o ithe'spider' is iivot'ed'at/ p 'wing oti-2ii-'evoli1ble'inember arifanged to rotate ahfiiit the new the s'temor spindle E in vertically ori tlie them orSpin'le lowing 'consti'h'ction is preferably employed:

a, vertion the cally adjustable s'ieeve' G. attiulg d. stem or spindle E, a ball beat" 9 being referehly, though; not ecessa y, interposed 'bet'weenthe' sleev' G'and the revoluble memben he l miq? P die E is provided vvith a keyway e in wl-hch a. art of the adyustable' sleeve Ur .engagesto old the sleeve against turning. In the construction shown, this sleeve is providedwith a. 'screw 01'" stud g" adapted to extend into the keywey hind thus revent the turiling oftlle sleeve onithe. spin e. The'sleeve isprovidedwith al'qt erel. extension g in when the A an adjusting screw H is rot itab The revoluble membep fibeers helcL this 11 erendz-di V screw', in the construction shdwn,'being"p1:o-

vided in its upper end with an, annular groove h, Fig. 2, into which a, screw or'hfild It" bf the'edjusteble sleeveGextends so that the adj gsting scre'w is free to turn aboutits. axis relatively to thead usting sleeve, 11111; is held from endwise movement-thereof- The ad'usting screw' isp'rovi'cled. .witHI a,

threude 1301131011 which enga eS with apart of the chair hese, for exainp e, withen'inteinelly threaded stud I which, in the'com strnction shown, is formedinte rel. with the reinforc'in flange or disk (12 "he-lower end of the nueting. screw extends down? werdly into the huUpontion of the chain, preferably into a hole iin one oithe'coriidr pieces a of-the liuh, theupper plete'B-..h6: ing' piovided' with a corresponding holethrough which theadjilsting screw; passes, In order to"tnrn the adjusting screw i611: raising or lowering1 the sleeve Gonthspin- (Helix; hand whee .or the like hislpt-ovjded on the a'djustin sc'r'ew. In orderjo'presient the fevoluble member fhiiiltlgbllCPBIifibQfl: nected'therewith from moving upwaidly. 'o'ilt of en agem'ent withthe stem or. spindiehheil, the 6 'air is lifted by the seetQthe adjusteble sleeve G-is 'pihferably providedwith-anleri; nulnr outwardly extending flange 'k-Wiih which a screw or part In extendifig throu a downward extending lip or projec'tio1n% of the revoln le member f, en ages. I

The cb'nstruction described or adjugting this seat relatively to the base o'hthecheilz, has the advantage of requiring a. companitiv'ely small number of parts, this being-ac: complished by foi ining the thrade'dlu integral with the reinforcin membej' C. providing the stein orsbindle Ewitli e kej Way in which the scr ew or' pin 9 ,eiigegea, the adjustable 'sleeve G is held against tum ing without subjecting the edjnstingecnew, to'the twists which result fromWhereypLving of the seat on the spindle, dpe v 0 fzitiqn. between the adjusting sleeve and thq revoluble member f. The constnuetion dfescribed is simple and efiicientjendfredupee not only the cost ofithe metajl fjoi tiong ofthe revolving cheii butelso r'edums. mi} c geti of producing the chair owihg to the fagt Ill) said legs,

that the parts of the chair can bemore readily assembled than with fittings for chairs or the like heretofore used.

I claim as my invention:

1. Means for connecting the legs of chairs and the like includ' a plate of relatively thin material adapt to engage said legs, cylindrical projecting parts extending outwardly from said plate and formed integral therewith, a reinforcing member of thicker material adapted to engage said plate at the juncture of said projecting parts with said plate, and means for drawing smd member into clamping engagement with said late.

2. Means for connecting the legs of c airs and the like including a central seat supporting spindle, plates of relatively thin metal through which said spindle extends and which engage the upper and lower faces of said legs, reinforcing members adapted to engage said plates, and means cooperating with said spindle to move said reinforc ng members into clamping engagement with said leg engaging plates and to rigidly support said spindle on said lags.

3. Means for connecting e legs of chairs and the like including a central seat supporting spindle plates of relatively thin metal through which said spindle extends and which engage the upper and lower faces of and reinforcing members adapted to engage said plates and having a threaded engagement with said spindle, whereby the turning of said reinforcing members relatively to said spindle causes said plates to clamp said legs and causes said spindle to be r' idly supported on said legs.

4. n a chair, the combination of a base including a clampin member for securing together the parts 0 the base, an 11 right member secured to said base by said ampin member and engaged thereby, a sleeve adjustable vertically on said upright mem-. her, and an adjustin screw connecting said clamping member an said sleeve for adjust; in said sleeve on said upright member.

The combination of an upright spindle, legs arranged about said s in la, a clampin" member having a threads engagement with said spindle and adapted to be pressed against said 1e for clamping said legs in operative relation to each other and for securing said spindle rigidly to said legs a vertically adjustable sleeve on said spindle, and an adj ustingdeviee engaging said sleeve and said clamping member for adjusting said sleeve lengthwise of said spindle.

6. The combination of a chair base including an upright member arran in said base, a clamping member secure to said upright member for securing together the parts of said base, a vertically adjustable member, and an adjusting device connecting said adjustable member and said clamping member for adjusting said adjustable member vertically relatively to said base.

7. The combination of a chair base including an upright member arranged substantially centrall in said base, means for clamping toget er the parts of the base including a clamping member connected with sid upright member, a vertically adjustable member, and an adjusting screw connecting said clamping member and said vertically adjustable member for holding said adjustab e member in any desired position.

8. Means for connecting the legs of chairs and the like, includi a central upri ht part having an externa y threaded portion, a plate of relatively thin material through which said upright part extends, a reinforcing member including a nut portion having a threaded engagement with said upright part and anintegral outwardly extending ortion adapted to engage said plate to reinorce the same, a member adjustable axially with reference to said base, and an adjusting screw connecting said member and said outwardly extending portion of said reinforcing member.

9. The combination of an upright spindle, legs arranged about said spindle, a clampin member engaging said 3 indle and adapted to be pressed against sai legs for clamping said spindle to said legs, said spindle having a ke Way, a vertical y adjustable member slide 1y arranged on said s indle and havin a art engagin said lieyway to hold said adjustable mem er against turning, and means connectin said vertically adjustable member and sai clamping member for adjusting said adjustable member lengthwise of said spindle.

ROBERT K DAWSON.