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US2648910A - Chair fitting device - Google Patents

Chair fitting device Download PDF

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US2648910A
US2648910A US15304650A US2648910A US 2648910 A US2648910 A US 2648910A US 15304650 A US15304650 A US 15304650A US 2648910 A US2648910 A US 2648910A
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seat
arm
fig
back
shaft
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Brown Sol Herbert
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Brown Sol Herbert
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C31/00Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs

Description

Aug. 18, 1953 s. H. BROWN CHAIR FITTING DEVICE 6 Sheets-Sheet 1 Filed March 51 1950 INVENTOR. 50; H, BROWN WWW Aug. 18, 1953 s. H. BROWN CHAIR FITTING DEVICE 5 m a 0 a 0 I3 5 2 KM .2.

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INVENTOR. H. BROWN 8, 1953 I s. H. BROWN 2,648,910

CHAIR FITTING DEVICE 6 Sheets-Sheet 3 Filed March 31, 1950 INVENTOR. So. H. BRaw/v W t/% By a 5 Arron/vars. 5

1 53 s. H. BROWN 2,648,910

CHAIR FITTING DEVICE 6 Sheets-Sheet 4 Filed March 31, 1950 E 58 I W 5s 57 I I I A l0 ilk. 72 -66 38 42 4 41-1 4 l 3 6 v 6 x11 XIII: INVENTOR.

ATTORNEY Aug. 18, 1953 s. H. BROWN 2,648,910

CHAIR FITTING DEVICE Filed March 31, 1950 6 Sheets-Sheet 5 WIVJZ ay/#7 IN VEN TOR. .501- H. Bfiaum/ ATTOF Aug. 18, 1953 s. H. BROWN CHAIR FITTING DEVICE Filed March 31 1950 GShgets-Sheet 6 INVENTOR. 8 01.. H, Ema w I m r AJ'NRNEY Patented Aug. 18, 1953 UNITED STATES PATENT OFFICE CHAIR FITTING DEVICE Sol Herbert Brown, San Francisco, Calif.

Application March 31, 1950, Serial No. 153,046

6 Claims. (01. 33174) This invention relates to a chair fitting device for use in obtaining the desired information for making chairs that will conform to the desires or physical characteristics of individual users, or for altering chairs to the same end.

The principal object of the invention is the provision of means for quickly, accurately, and easily obtaining the necessary information for making chairs that will conform to the desires or physical characteristics of individual users, or for altering chairs to the same end.

Heretofore, in making a chair to the individual order of a user, insofar as its utility is concerned, it has been necessary to merely approximate accomplishing the desires of such user by the relatively primitive method of blocking up, filling out or removing certain portions of an existing chair, supplemented by verbal instructions where deficiencies continue to exist. This procedure is prohibitively costly and the results leave much to be desired due to the impracticability of making certain adjustments.

Another method, and the one most commonly employed is for the user to try out an assortment of chairs in an effort to obtain one that may fit better than the others. This, of course, requires a large assortment of chairs and in the end the user must resort to verbal instructions for the changes to be made, with the result that the final chair that is produced seldom comes up to the expectation of the user, particularly where consideration is given to the cost involved.

With the present invention, each detail of the chair from the standpoint of fit and comfort as applied to the particular individual who will use the chair, is quickly and accurately determined and the chair that is made in accordance with the data obtained from use of the said invention will be entirely free from any guesswork as to size, fit, tilt, different relationships between such parts as the seat, back, arms and the other details that may enter into making an individually fitted chair.

Other objects and advantages will appear in the drawings and description.

In the drawings,

Fig. 1 is a top plan view of a preferred form of the invention, one corner being broken away and in section to disclose certain structure.

Fig. 2 is a side elevational view of the device shown in Fig. 1 as seen from the side provided with the adjusting wheels seen in Fig. 1.

Fig. 3 is an enlarged fragmentary sectional view taken along line 1IIIII of Fig. 1.

Fig. 4 is an enlarged fragmentary sectional view taken along line IV--IV of Fig. 1.

Fig. 5 is a fragmentary enlarged sectional view taken along line V-V of Fig. 3, the inner upholstering in the seat portion being omitted for clarity.

Fig. 6 is an enlarged sectional view of one-of the arm supports as seen along line VI-VI of Fig. 5.

Fig. '7 is an enlarged fragmentary sectional view of a bearing for the arm support as seen along line VII of Fig. 5.

Fig. 8 is an enlarged fragmentary sectional view of another bearing for the arm support as seen along line VIII of Fig. 5.

Fig. 9 is a top plan view of the rear of the seat adjusting mechanism (one gear being in cross section) and the back of the seat being indicated in dot-dash lines.

Fig. 10 is a rear view of the seat adjusting mechanism as seen from the back of the seat, the latter being indicated in dot-dash lines. Line x-x of Fig. 4 indicates the point of view.

Fig. 11 is a fragmentary sectional view taken along line XIXI of Fig. 3 with the foot rest omitted, but with its outline indicated in dotdash lines.

Fig. 12 is a fragmentary sectional view taken along line XIIXII of Fig. 11.

Fig. 13 is an enlarged fragmentary sectional view of one of the back adjusting means as seen from line IGII-XIII of Fig. 10.

Fig. 14 is an enlarged fragmentary View of a portion of the adjusting means as seen from line XIV--XIV of Fig. 10.

Fig. 15 is a fragmentary enlarged sectional view of part of one of the control or adjusting means on line XV of Fig. 3.

Fig. 16 is a semi-schematic sectional view showing the various seat adjustments in dotdash line with the seat and back being indicated in full line in one position.

In detail, the invention as illustrated in the drawings comprises an upholstered back I (Fig. 1) and seat 2, arm rests 3, and foot support 4. These parts are movable relative to each other. The upholstering or padding in the seat and back and arm rests may be of any conventional type. It is not removed or altered in making seat and back adjustments and the seat and back frames are adapted to support any type of conventional upholstery.

The seat frame includes a pair of parallel opposed vertically disposed frame members 5 having oppositely outwardly opening horizontal parallel channel members 6 secured thereto along the upper edges of said frame members 5 (Figs. 4, 5) projecting downwardly from the lower forward corners of said frame members are aligned bearings I through which a horizontal shaft 8 extends on which said bearings are pivotally supported. This shaft is rotatably carried in bearings on frame members In of the chair (Figs. 5, 11).

From the above it will be seen that the chair seat frame is pivotally supported at its forward end on shaft 8 for swinging from full line position 2 of said, seat in Fig. 16 to dOtrdaSh line position 2' and to any degree of incline between said positions 2, 2'.

It is to be understood that the depth of said seat (front to rear) is sufficient to properly: seat persons of different sizes. As will be later explained, the back is preferably adaptedto-move over the seat from front to rearso as toenable the seat and back to be adjusted relatively to From the above, it is seen that preferably, the seat itself is not moved forwardly or backwardly, but is merely tilted about a horizontal axis, as desired.

The channel members 6 at opposite sides of the seat frame project rearwardly of the side frame members -5 for a substantial distance and terminate re'arwardly of the seat and of the back when the latter is in its most rearward position.

Within each channel member 8 is a horizontal screw 3|, each screw being rotatably supported and held at its ends in bearings 32 secured: tothe said channel members (Fig. 4). The back frame carries a bracket 33 rigid therewith'at each side of the seat, and each bracket is providedatits, rear end with an internally persons having widely different physicalchar acteristics.

' Theadjusting of theinclination of the seat between positions 2, 2? (Fig. 11) is accomplished bythe provision of a pair of; gear segments I2 secured to the rear ends of the seat frame memhers- 5, (Fig. 4) Said segments extend upwardly and'thel teeth are along lines concentric with the pivot shaft 8. Pinions l3 secured on ahorizqntal; shaft I 5, that in turn is journalled in hearings on rigid frame members I5 (Fig. 3) have their teeth in mesh with the teeth of the s ar m t I 2.

The;sha f t I l-is provided with a sprocket wheel !5' over which a sprocket chain I6 extends. The chain It also'extends over a sprocket wheel ll (Fig. 5) that is secured on rotatable pivot shaft 8.

The shaft 8.also has-a worm wheel i8 (Fig. 3) secured thereon, which worm wheel is in mesh witha worm i9. Worm lfl is secured on'a ver ticalshaft 29, said shaft 26; being journalled at itsends-in bearings 2! securedto the rigid'frame of; the device, The upper end of shaft has a bevel gear 22 secured thereto, the teeth of which are; in'-.mesh; wit h the teeth of a bevel gear 23' thatis secured on one end of a horizontal shaft 23. This shaft 23 in turn is rotatably supported on the rigidframe of the machine which includes a control box 25 (Figs. 1, 2) at one side of the seat. The end of shaft 23 opposite bevel gear r23-f extends out of the outer vertical side of the control boxand has a hand wheel 24, securedthereto forrotating shaft 23 in either direction. A worm- 25 on shaft 23 is in mesh with a worm wheel 21 (Fig. 1) that in turn is onashort vertical shaft 28. The upper end of shaft-.1281 extends-through the upperside of the control box 25 and an indicator arm or needle 29.01; theupper exposed end of shaft 28 is adapted to scan a coded dial 3%, or to point to indicia on'a dialaround the axis of shaft 28.

Normally, when the seat 2 ishorizontal, the indicatorarmorneedle -29 may, for example, be-directed toward agraduation that reads zero ortheequivalent. Upon rotating the hand wheel 24.. in;.a.direction for causing the pinion 13 to lower the rear end of seat.2, the needle 29 will progressively move toand past graduations that maybe designated byany desired symbols, and which symbols mayread directly indegrees of angle between the seat;and vertical or horizontal, or may provide for any other desired reading Whatever the reading or symbol is, it is one from which: the. angular position of the seat may be readily determined and code markings may be .used forthis purpose and translatable into. the information desired.

threaded projection 34 through which the screw 3|. threadedly extends. The forward end of each bracket 33 has a similar projection 35 through which screw 3'! slidably extends and upwardly projecting; lugs 35, onthe forward ends of bracke etsBR. have axially 'alignedoperings for axially, aligned pivots 31 that connect the back with the brackets, Thus, the-back is adapted to swing about the pivots. 31-; and said. pivots-are positioned adjacent the; forward-:side of the back seen inFig, 4.

By rotating the screws 3:1, thebrackets 33; and consequently the-back. I; will: be. moved. either. toward or away from'the front edge ofseat. 2 according to the direction-of rotation: of. said screws.

The rear ends of screwed! each -carryya bevel gear 38- (Figs. 10, 13). A. pair of. bevelv gears 39 securedon a;horizontal shaft 39 that extends between gears SBIha etheir-teeth in'mesh with the teeth of gears- 38: Shaft 39! is journalled in bearings til-that: are secured to across'framemember .1 that in turn connects therrear'ends of channel members 5-.

One of the ends of shaft- 39-? has. a;- sprocket wheel iZsecuredthereto (Fig. 10). A sprocket chain-53 .con-nectssaid wheel-42 with a sprocket wheel lid-thatais. in turn secured omone end-of.- a'sleeve 45 (Fig; 5) -that issrotatableonthe pivot shaft. 3., The other end. of sleeve. 45 has a. sprocket. wheel -46; A-- chain 4-1 :ccnnectssprocket wheel-e5 with a-sprocket-wheel-48e (Fig-. 3) that: is onaishaftwia Said shaft 49-:is paralleluwith'i andsimilar to the shaft-23' that-has-handiwheeli. 2 securedsthereto, and-a similar hand-wheel- 50 islsecured on-shaft%49-.:for rotating the latter. This; hand wheel 50. is c0nnected..with.an; indicatcr 5i (Fig. 1) that is oIr-ar vertical shaft: 52 by;-worm gears (not shown) that are -identi-. cal withithe-gears- 2.5; 21 that. are-respectively: on shafts-23; 28.: Indicator: 51 scans. or moves aroundray; dial 53 having: any; desired 2 symbols v thereon :fordndi-c'ating. the relationship between. the back;- and the; forwardtedge .cfrthe seat:

By, the. foregoing. explanatiom. it will Ice-seem that the seat 2 is tilted by actuation of thehandwheel, 2t; andtheback will move downwardly or upwardly with the seat when-thelatter-is tilted. By rotation of hand Wheel 55', the back I-may bemoved toward and'away from theforward edge of the seat 2, and this movementmay beeffe'ctedat any-.degree of inclination-of the seat; aswell as when theseatis' tilted. In 'fact the-seat'may be tiltedsimultaneously with movement of the" back.

In order to swing the back-'tordifferent'angue lar positions relative to the's eat, a pairy of 'simi-' lar segmental gears 55 are secured-to the back aeeaeio of the seat adjacent each of its side edges (Figs. 4, 13 and upstanding members 56, 51 on brackets 33 have aligned bearings in their upper ends in which the ends of a shaft 58 is rotatable.

Below, and parallel with shaft 58 is a second shaft 59 that is also supported at its ends for rotation in members 5 6, 51. Sprocket wheels 69, 6| respectively secured on shafts 58, 59 are connected for rotation together by a sprocket chain 62. The sprocket Wheel and chain are diagrammatically indicated in dot-dash line in Fig, 13 in order to clearly show how the lower ends of the segmental gears 55 extend over shaft 59 in order to provide for added movement of said gears. Pinions 63 secured on shaft 58 (Fig. have their teeth in mesh with the teeth of the segmental gears 55.

The end of shaft 59 opposite the sprocket wheel 6| extends through the upstanding member 57 and has a worm wheel 65 secured thereto. The teeth of worm Wheel 55 are in mesh with the teeth of a worm 58 that is secured on a shaft 61, the latter being journalled for rotation in bearings on member 51 (Fig. 14).

A bevel gear 69 is secured on one end of the shaft 61, and the teeth of said gear are in mesh with the teeth of a bevel gear 10 that is secured on shaft 1 I Shaft 'H is journalled for rotation in bearings secured to the cross frame 4| and the end of said shaft opposite gear 10 has a sprocket wheel 12 secured thereto (Fig. 10). This sprocket wheel is connected by a chain 13' with a sprocket wheel M that is secured on one end of a sleeve 15. Sleeve is in turn rotatable on the sleeve 45 that, in turn, is rotatable on pivot shaft 8. Also secured on sleeve 15 is a sprocket wheel 1! (Fig. 5). This sprocket wheel 11 is connected by a chain it! (Fig. 3) with a sprocket wheel 19. Sprocket wheel 19 is secured on a shaft 89 that is identical with shafts 28, 52 on which hand wheels 24, 58 are respectively secured. A hand Wheel 8| is secured on one end of shaft 89 and is alongside wheel 50 (Figs. 1, 2). Said shaft 88 is connected by worm gearing (not shown) with a vertical shaft 82 that in turn carries an indicator 83 adapted to scan or move around a dial 84 having suitable symbols thereon, coded or otherwise, for designating the degree of inclination of the back I when wheel 80 is rotated.

It is pertinent to note (Fig. 16) that the back I may be inclined forwardly at its upper end relative to Vertical when the seat is horizontal. This permits the back to be adjusted to vertical position when the seat is inclined, which would not otherwise be possible, and there are some instances where it is desirable that the back I be disposed at an acute angle relative to vertical, which is usually when the seat is inclined.

In connection with the back tilting means, it is pertinent to note that the back may be tilted by revolving hand wheel 8| either simultaneously with making the other adjustments, or independently of the means for making said other adjustments. It is immaterial whether the seat is level, or tilted, or whether the back has been moved forwardly or rearwardly. At any time the backmay be tilted.

In Fig. 5 it will be seen that the arm rests 3' are each carried on the inner end of an arm 85. These arms 85 extend toward each other from opposite sides of the seat and above the latter, therefore their inner ends are their adjacent ends that are nearest each other. I

The arm rests are identical, hence a description of one,.including its supporting and operatingmeans, will sufiicefor the other, although, as will be later explained, more in detail, a common means is connected with the arm rest elevating means for simultaneouslyactuating them for corresponding upward and downward movement, and another common means is connected with them forsimultaneously moving the arm rests toward and away from, each other.

Ateach side of the seat 2 are a pair of vertically disposed, rigid, guide members 88 (Fig. 3) and between each of-said pairs is avertical slide 81 that is held on said guides for vertical movement up anddown..

, Each slide 81 carries'a bracket 89 (Fig. 5) that is rigid therewith, Brackets 89 extend toward each other fromthe opposedly facing, sides of they slides that are at opposite sides of the seat, and each bracket 89 carries horizontally disposed slide supports 90' at the upper end thereof. Slide supports 98 extend toward each other from said upper ends of the brackets 89.

Carried by each of the said slide supports 98 is a slide 9| (Fig. 6), and each slide 9| carries an arm support 92 for each of the arms that has the arm rest 3 thereon. v

Each arm support 92 is horizontally elongated in a direction parallel with the horizontal longitudinal axis of the seat and with each arm rest 3, the latter extending in a direction from the front to rear of the chair in the usual manner for arm rests.

Each arm support comprises a horizontal, elongated base 93 lower row of balls 94 in a straight race that extends longitudinally of said support (Figs. 6, 7) and spaced above said row in an overhead hold-downstrip 95 that is secured at its ends to the base by end pieces 98 (Figs. 6, 7). The arm 85 is generally in the form of an inverted channel strip of substantial width, and passes between the hold down strip 95 and the row of balls 94 transversely thereof. At the point where each arm 85 crosses the row of balls, it is provided with a cross rib 91 extending between the downwardly extending sides of the channel strip forming each arm support 85. The lower surface of said rib is recessed to provide an upper race for the balls 94 and is supported on balls in said row for movement of the arm support longitudinally of said row.

The outer end of each arm support. 85 extends below a flange 98 that is spaced above the slide 9| and that is secured to said slide in a position spaced laterally from base 93, but parallel therewith (Figs, 5, 8). The lower side of flange 98 is longitudinally recessed to provide a race for a row of balls I80, and the upper side of the outer end of each arm 85 is also grooved or recessed to provide a lower race for said balls. Astrip |0| spaced below the outer end of each arm 85 is secured at its ends to flange 98 for retaining the outer ends of said arms from moving downwardly' a sufficient distance to enable the balls to fall out of the recess.

Balls 94 and balls I09 are respectively held by conventional cages or spacers I02, I03 in spaced relation in their races. 7

From the foregoing, it will be seen that the arm rests 3 may easily and readily be moved longitudinally in directions toward and away from back No mechanism is required for this movement, inasmuch as the arm rests on chairs are practically always horizontal and will stay in whatever position they are moved. This manner of movement of the arm rests is also highly desirablei' sci-there wmi be no possible bloekifig or movem'e'nt of the bath said rests; when saidback is being adjusted; If the arm rests were locked in position, it: would, many instances;- be necessai y to unlock th'e'mbeforachangirfg the position of thebacki This: would be undesii ablei whereas byenabling the: user: to freelymove the arm rests f orwardly or nackwardly whet-i seat'ed in the chair, the back is-fi 'ee to move tb any position,-- e'ven were tl'ie en'ds of thearm rests m engagement with tliebacls l Elevation 015 the arm rests is prlivided for by providing f for vertical movenient of the slid'e 81.

Secured to each of the oppositely outwardly facing sides of- Ver tical slides" E7 is a threaded member I- through which extends a vertical screw I06: inthreaded engagement with thethreads in each member (Fig-2 3 Eaeli-screw II)? is rotatably secured at: its lowerend in a' bearing on thebase III-'I of 'tlie deviee; and 'the lower emt of each screw has a spiralgear I08 secured thereon, the teeth ofi whicli-"spirai gears are, in turn, in mesh with the -teeth o f worin -gears that are respectivelysecured on the endsof" a horizontal I shaft m (Fig; i 5) Bearin'gs s'ecured: to base I 01 or to any rigid part ofth'edevice mayrot'atablysupportshaft I III-E 7 Alsoseeured on shaft" I I6 is a; sprocket wh"ee1- II I (Fig-3) that-i's'cdrifiebtd by-a'-ch'ain l li with a: sprocket H3 on a horizontal shaft H4. This shaft I I I a is identical- -w'ith' -shaifts 49 and 80 and v is parallel therewith. Said shaft I lissa-hand wheel I i5 seourecl on one end and which wheel is one'mf the row of hand wheels that isalong the: lateral s'ide of thecontrol box' 2 5 (Figs; 1, 2-); A worm"'geanconneetion' connects shaft I I4 with vertical shaft l l fi that ha's amifidie'at'or I I 'I there-'- on. Thisindicator 'seansor moves around-a dial I 'I 8 that is p'i'o lid'ed with' symbeis: adapted to indicate, or: to be translated fer indicating, the hei'ght of the arin rests-relativeto the seat or relative-to 'any 'otlier"desir'ed iart.

B'y ro'tatirig the' harm wheel II 5 in one diree tion or the other the arm rest'swill-be simuh taneously moved up or clown; and this movement' ma be: attested: simultaneoiisly with the otfier adjustments or byitsel-f "irrespective ofthe relative positions of the other parts of the device.

The horizontal slide-S 91 01i which the arrfi r'ests are carried, each has on its under'sidea down wardliy'proj eeting threaded"'iriemher I 20 (Fig? 5) Horizontal axially" aligned screws I 24 frest)e'ctiveljrextend thrOiIgh-these members inthreaded-' enagementitnei-ewiths The inrfer adjaeeii-t endsof these screws terminate 'at points adjacent th'e 019 posite sides of -the seatso as Hotte -interfere with movement of"the seat and -backi The outer en'd's oi "screws 4 I 2-! are' j ournalled in bearings suitably secured to the framebf tl ie 'coh trol box 25';- ahd ea'ch outer" end ha's a spiral gear I 22 secured thereto;- H

The teeth of each-spiral gear IZZ ai-e in mesh with-the teeth o'faspiral 'gea-r I23 that' is splified on a vertical shaft I24 (Fi'. 3-)' thesa idgear123 being rotatably 'carriedbetween bearinesthat are in turn secured to ea'eh' vertical-"slicle iflJ spiOClieF-Whfiel l zs secured thereon; s'aia witeel; I2 9 is" connected bya chain-'- l's'nwitw aks'r'irdcletf wheelliaI that is,-in turn, secured oh'o'n'e' end of: a Shaft I325 This-shaft- [32 1's idehtic'ailwitl'i th shafts? I'I5--and is=parallel therewith A h'and wheel I33 i's'sec'uredon one end of shaft I32 11w a worm gear"connection identical witli-tlie indfi c'at'or' controls previously des'c'ribe'd; connects shaft I32 with a-verti'c'al shaft I35 on the endofw'h'ich is'an indicator I{I that-is to'nioife around a dial lift in one direction or the other according to the dir'e'c-tio'm of rbt'atien of the hand wheel I333 Thesyfribols on dial" I3B-"ar suclias to designate the spacing-betwe n" the arlfi rests.-

Whe'rr the hand wheel I 3'3 is rotated in one direction, the arm rests will be sir'n'ultaiieeiisly moved toward eachother', and-when said wheel is-ro't'a'ted" in the opposite direction, they will b'e moved' apart; These-moveinents ma be si'mlil taneous with the movement of any one oi- 'more' of the other part's'of'th'e chair.

The foot rest ismovable vertically liji and down relative to the seat. In thi's n'ianiiei th desired elevation'of the seat from the-fieonmay be determined" without moving-the sea-t= A Sa'id' foot rest 4 is a horizontal rectangular platform (Figs. 1, 11, 16 that is provide'd witha n'ut Mt" (Fig; 12') at -eaeho'f-- its feiir cbrners. Tlireadedly extending 1 thi'bli'gl'i nut I 40" 15 a vertical screw- MI. The hpfir" ends o-f the screws proj e'ct above the foot-rest arida re"joiii nailed-ior rotation in bearings lfl secureii 'inany snitable manner 00 the frame of the machine; The lower ends of said s'c'rews are also 'journ alledfor rotation inbearings I 43 T th'a't may 'be scurd in anysuitable manner to base 1 015 A ssrsttet' wheel Mtis seeur' d togthe lower end of each-vertical screw IdI said wh'eels' being coplanar, and a sprocket chain I45 extends around the'four vertical-shafts and message: ment'with said sprocket' -whe'els M1 50 that move:- ment' of' said chain in orie' directi'or'ior the other will cause simultaneous-rotation of sa'i This chain" extends into" the cofitiorbo aroundsprocket wheel" ME -(Fig; 11-) secured on the-lower end-"eta vertical she-ft m that" is in the control box" 2 5 (Figs.-- 1; 8-). The" said shaft M7 3 is 'journ'alled fo'r retatiofi ifi' upp'er and lower bearings: M8;- l-ds that aresecure'd tl'ie fraineo'f th'e machine.

On theupper end of shaft It? is-provideda bevel gear I53," thete'ethiof whichai'e ifi n'ie's'h with-the'teeth of a'bevel'gear'lfiI that s .securedton a herizontalshaftI521" The oiite'rend of shaft-ml'pro'jects' from a side'of the-eofitrol box an'd h-as a hand Wheel I53 secured thereto} while the oppositezend 'of said -sh'aft ha's a w o'rm I54 secured-thereto. The teeth of worm-wa ers" sea-tand the foot rest.- By: rotating 'the hahd wheel I-53 in :one direction or"theotlrer"the foet rest will be moved up or down.

Referring 1 to "Fig: 16;' it will be seen that the along -one lateral' side of thecoiitrol'boii, and? 9 side of said box, and can also easily manipulate the hand wheels. Also, such operator can readily see the seat parts so as to observe their relationship to each other and to a person seated in the chair. I

By rotation of the hand wheel !53 inone direction or the other the foot rest may be moved between the full line elevatedposition seen in Fig. 16 and the lowered dot-dash line position I60, and it will stay in any position of adjustment irrespective of the downward force placed on the foot rest.

'By rotation of hand wheel in one direction or the other, the seat may be tilted about the pivot 8 between thehorizontalfull line position (Fig. 16) and the inclined dot-dash line position IGI. 'In this instance the seat will also stay in any adjusted position due to the worm gear connections in the adjusting means.

By rotation of hand wheel 50 in one direction or the other the back I will be moved forwardly and backwardly between the rearmost fullline position seen in Fig. 16 to the most forward dotdash line position I62. The back is locked in any position of adjustment irrespective of the force that the person seated in the chair may apply to the back. I

By manipulation of hand wheel 8! the back of the seat may be swung between the inclination seen in full line in Fig, 16,- and the mostforwardly inclined position I64 indicated in dotdash line. The back will be locked in any position.

By manipulation of hand wheel H5, the arm rests will be moved up and down between the maximum height indicated in full line in Fig. 16 and the minimum height, indicated by-dot-dash lines I65 (Figs. 5, 16).

By manipulation of hand wheel I33 the arm rests will be moved toward and away from each other between the full line position 3 (Fig. 5) and dot-dash line position I66.

As already mentioned, the arm rests may be moved longitudinally of the chair when they are in any position.

It is to be understood that the invention is not intended to be necessarily restricted to precise details of construction as herein specifically described. The illustrations and description show a preferred form of the invention.

By use of the chair, practically any fit may be quickly, easily and accurately made, and from the data obtained, a chair may be made to order in the desired style, and such chair will properly fit the body of the user.

I claim:

1. A chair fitting device comprising a rigid frame, a seat having a front edge, a back having a lower edge, pivot means respectively supporting said seat and said back for swinging about horizontal parallel axes respectively adjacent said front edge and said lower edge, seat and back actuating means for swinging said seat and said back about said axes including a pair of intermeshed worm gears respectively for said seat and said back providing means for locking said seat and said back at any position in their movement about their respective axes, a pair of arm rests spaced above said seat, means supporting said arm rests on said frame for vertical movement toward and away from said seat, movable means connecting said arm rests for said vertical movement simultaneously, and a single control mechanism connected with said last mentioned movable means for causing said vertical 10 movement upon actuation of said single control means. I f

2. A chair fitting device comprising a rigid frame, a seat having a front edge, aback having a'lower edge, pivot means respectively supporting said seat and said back for swinging about horizontal parallel axes respectively adjacent said front edge and said lower edge, seat and back actuating means for swinging said seat and said back about said axes including a pair of intermeshed worm gears respectively for said seat and said back providing means for locking said seat and said back at any position in their movement about their respective axes, a pair of arm rests spaced above said seat, means supporting said arm rests on said frame for.vertical movement toward and away from said seat, movable means connecting said arm rests for said vertical movement simultaneously, and a single control mechanism connected with said last mentioned movable means for causing said vertical movement upon actuation of said single control means, said movable means including stationary vertical screws rotatable about spaced vertical axes respectively adjacent each arm rest and vertically movable slides on ,said frame threadedly connected with saidscrews for movement along the latter upon rotation of said screws, said arm rests'being secured to said slides for movement therewith, and said single control mechanism including means connecting said. screws for simultaneous rotation.

3. A chair fitting device comprising a rigid frame,'a seat, a back and arm rests, guide members at opposite sides of said seat, armrest supports carrying said arm'rests supported on said guide members for movement up and down, a mechanism connecting said arm rest supports for so moving said arm rests simultaneously, manually actuatable means connected with said mechanism for actuation thereof, members supporting said arm rests on said arm rest supports for horizontal movementtoward and away from each other, driving means connecting said members for simultaneous movement toward and away from each other, and manually actuatable means connected with said last mentioned driving means for so moving said last mentioned members.

4. A chair fitting device comprising a rigid frame, a seat, a back and arm rests, guide members at opposite sides of said seat, arm rest supports carrying said arm rests supported on said guide members for movement up and down, a mechanism connecting said arm rest supports for so moving said arm rests simultaneously, manually actuatable means connected with said mechanism for actuation thereof, members supporting said arm rests on said arm rest supports for horizontal movement toward and away from each other, driving means connecting said members for simultaneous movement toward and away from each other, and manually actuatable means connected with said last mentioned driving means for so moving said last mentioned members, bearings supporting said arm rests on said members for reciprocable movement at right angles to their direction of movement toward and away from each other at any degree of elevation of said arm rests and at any degree of movement toward and away from each other.

5. A chair fitting device comprising; a rigid frame, a seat frame, a seat on said frame having a forward edge and a rear edge, a horizontal pivot securing said seat frame to said rigid frame for tilting said seat frame relative to horizontal and vertical, a back frame, a support onsaid seat frame movable therewith supportin Said back frame on said seat frameforhorizontal reciprocable movement of said backframe relative to said seat frame toward and away from said forward edge, pivot means securing said back frame to said support adjacent to said rear edge and to the opposite sides of said seat for tilting said back frame relativeto said seat frame,.arm rests, guide members rigid relative to said rigid frame-at opposite sides of said seat frame and an arm rest support carrying each arm rest supported on each guide member for vertical movement independently of said seat frame, separate manually actuatable mechanisms respectively connected with said seat frame and with said back frame for separately tilting said seat frame on its pivot and for moving said seat frame horizontally and for tilting said back frame on its pivot means, driving elements connecting said arm rest supports for simultaneous movement up and down and manually actuatable means connected with said elements for causing said last mentioned movement independently of said separate manually actuatable mechanisms.

6. In a chair fitting device having a rigid frame and a. seat frame having a seat thereon and a back frame having a back thereon; a horizontal pivot supporting said seat frame for tilting movement relative .to horizontal and vertical about the axis of said pivot, pivot means securing said back frame to said seat frame for swinging movement of said backframe about a horizontal axis parallel with said firstmentioned axis and relative to said seat frame, a foot rest, means supporting said foot rest for movement up and down as desired, arm rests, guide members at opposite sides of said frame, arm rest supports carrying said arm rests and supported on said guide members for up and down movement, a control box at one side of said rigid frame, separate mechanisms extending from said .control box to said seat frame, back frame and foot restforrselectively actuating them as desired for their respective movements as desired, and an arm support actuating mechanism connected with said arm supports and extending to said control box for simultaneously moving said arm rests up and down independently of said seat frame and said back frame, manually actuatable elements on said control box connected with each of said separate mechanisms and with said arm support actuating mechanism for manually actuating them independently of each other.

SOL HERBERT BROWN.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 242,573 Wilson June '7, 1881 332,836 Robinson Dec. 22, 1885 710,561 Boyd Oct. 7, 1902 919,559 DuiT Apr. 27, 1909 1,236,517 Wemple Aug. '14, 1917 1,527,754 Simon Feb. 24, 1925 1,564,339 Fraser Dec. 8, 1925 1,590,240 Gorton June 29, 1926 1,721,221 Jauregui July 16, 1929 2,100,597 Pickle Nov. 30, 1937 2,359,318 Lay Oct. 3, 1944 FOREIGN PATENTS Number Country Date 410,119 Germany Feb. 24, 1925

US2648910A 1950-03-31 1950-03-31 Chair fitting device Expired - Lifetime US2648910A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728150A (en) * 1986-10-08 1988-03-01 Gaudreau Charles H Jun Apparatus for wheelchair fittings
US5735573A (en) * 1996-08-20 1998-04-07 Vredevoogd; Jon D. Chair with power seat
US20050275269A1 (en) * 2004-05-14 2005-12-15 Tim Fookes Tilt tension mechanism for chair
US20100109413A1 (en) * 2008-10-31 2010-05-06 Kneller Heidi J Adjustable width seats
US20120038195A1 (en) * 2009-04-15 2012-02-16 A4 Co., Ltd. Seating furniture having movable backrest

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US919559A (en) * 1908-10-09 1909-04-27 Albert A Duff Adjustable piano-bench.
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US1527754A (en) * 1923-06-08 1925-02-24 Sylvester J Simon Relaxation chair
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US1564339A (en) * 1923-04-23 1925-12-08 Chelsea C Fraser Measuring chair
US1590240A (en) * 1925-08-17 1926-06-29 Gorton George Chair for machine operators
US1721221A (en) * 1926-04-14 1929-07-16 Jauregui Pedro Surgical arm chair
US2100597A (en) * 1935-09-12 1937-11-30 Pickle Marion Mcdonald Combined chair and desk
US2359318A (en) * 1941-06-12 1944-10-03 Walter E Lay Spring construction and method of assembling

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US242573A (en) * 1881-06-07 Geoege wilson
US332836A (en) * 1885-12-22 kobinson
US710561A (en) * 1900-03-29 1902-10-07 Fisher Typewriter Company Type-writing-machine support.
US919559A (en) * 1908-10-09 1909-04-27 Albert A Duff Adjustable piano-bench.
US1236517A (en) * 1915-09-03 1917-08-14 George W Wemple Desk-chair.
US1564339A (en) * 1923-04-23 1925-12-08 Chelsea C Fraser Measuring chair
US1527754A (en) * 1923-06-08 1925-02-24 Sylvester J Simon Relaxation chair
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US1721221A (en) * 1926-04-14 1929-07-16 Jauregui Pedro Surgical arm chair
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US2359318A (en) * 1941-06-12 1944-10-03 Walter E Lay Spring construction and method of assembling

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728150A (en) * 1986-10-08 1988-03-01 Gaudreau Charles H Jun Apparatus for wheelchair fittings
US4763952A (en) * 1986-10-08 1988-08-16 Gaudreau Charles H Jun Apparatus for wheelchair fittings
US5735573A (en) * 1996-08-20 1998-04-07 Vredevoogd; Jon D. Chair with power seat
US20050275269A1 (en) * 2004-05-14 2005-12-15 Tim Fookes Tilt tension mechanism for chair
US7500718B2 (en) 2004-05-14 2009-03-10 Haworth, Inc. Tilt tension mechanism for chair
US20100109413A1 (en) * 2008-10-31 2010-05-06 Kneller Heidi J Adjustable width seats
US8186760B2 (en) * 2008-10-31 2012-05-29 The Boeing Company Adjustable width seats
US8528861B2 (en) 2008-10-31 2013-09-10 The Boeing Company Adjustable width seats
US20120038195A1 (en) * 2009-04-15 2012-02-16 A4 Co., Ltd. Seating furniture having movable backrest

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