US2838095A - Posture chairs - Google Patents

Description

June 10, 1958 c. u. DEATON v 2,838,095

POSTURE CHAIRS Filed D60. 7, 1955 5 Sheets-Sheet l Ill :5 3 46 A FIG 4s.- S

2 A I I 2| FIG-2 INVENTOR.

BY CHARLES u. DEATON ATTORNEY June 10, 1958 c. u. DEATON 2,338,095

' POSTURE CHAIRS Filed Dec. '7, 1955 5 Sfieets-$heet 2 INVENTOR.

CHARLE S U. DEATH TTORNEYW Julie 10, 1958 Filed Dec. '7. 1955 C. U. DEATON POSTURE CHAIRS 5 Sheets-Sheet 4 FIG-8 JNVENTOR. ICHARLES u. DEATON ATTORNEY v Figure 3;

Figure 7 is afragmentary sectional view taken along 2,838,095 POSTURE'CHAIRS Charles .U. Deaton, Denver, Colo. Application December 7, 1955, Serial.N0. 551,6 53 (Claims. c1. 155-157 This invention relates in general to certain new and useful improvements in chairs and, more particularly, to a'posture chair. 1 ,7

It is the primary object of the present invention to provide a chair having a seat, back,yand anns which are removably and resiliently interconnected so as to readily and comfortably conform to theposture of the individual seated therein and will yield to the individuals movements so as to support the body in various sitting positions.

It is another object of the present invention to provide achair of the type stated which is simple and economical in construction and lends itself readily to incorporation in attractive furniture designs of modern appearance. f

It is a further object of the present inventionto providea chair of the type stated in which the arm rests will maintain a desirable angular position in relation to the seat and back through all the various positions into which the chair can be shifted. I I V With the above and other objects in view, my invention resides in the novel features of form, construction; ar-

presently described Figures 4, 5, and 6, are fragmentary sectional views taken along lines 4-4, 55, and 66, respectively, of

line 77 of Figure 4; v

Figure 8 is a side elevational view of a modified form of posture chair constructedin accordance withand embodying the present invention;

Figure 9 is a transverse sectional view taken along line 99 of Figure 8; and

Figure 10 is a fragmentary sectional view taken along line 1010 of Figure 9. 1 i V p Referring now in more detail and by reference characters to the drawings, which illustrate a preferred embodiment of the present invention, A designates a posture chair of the so-called swivel or fex'ecutive type and comprises a conventional four-branched or cross-shaped base frame 1 supported upon the floor by means of casters 2 and centrally provided with a conventional vertically adjustable chair-screw 3 andadjustment collar 4 which is mounted upon a conventional swivel" bearing 5. Inasmuch as the base and swiveling structure of the chair A do not form a part of the present invention, they Q are not shown or describedin more particular detail' herein. j l

Rigidly mounted upon' the upper end of the chairbight 7 and vertically upstanding spaced parallel flanges all) each ot er, in

2,838,095 Patented June 1 0, 1958 screw 3 is a U-shaped swivel bracket 6 having a horizontal 8, 9. Spot welded on the outwardly presented lateral faces of the flanges 8, 9, are V-shaped seat irons 10 hav-,

ing angularly outwardly branching arms 11, 12, for rigid attachment to the under side of an upholstered seat S, the under structure of which consists essentially of two spaced parallel. side frame members 13 connected to gether by transversely extending front and rear frame members 14, '15,'respe ctively. Rockably mounted between the flanges 8,9, upon a' pintle pin16 is a rearwardly extending arm 17 which is stamped or otherwise suitably formed to include a horizontal bight18v and spaced vertical flanges 1 9, 2 0, which project rearwardlyf beyond the bight' 18 and are turned inwardly" toward",

the "provision 'of attachment plates 21, 22,

respectively. 1 7 =1 Welded, to and extending, transversely between, the flanges 19,720, is a cross-plate 23 having a centrally located aperture 24 for receiving the hooked end 25 of a tensioning screw 26 which' extends more or less horizontally forwardly and projects slidably through an aperture formed 'c'entrallyin a cros's-bar'28, which is, in turn, pivotally mounted at its opposite endsinjthe, flanges 8, 9. At its forward end, the tensionir'ig screw 26 is threaded for. receiving a large handQnut Z9 'whieh is integrally provided with a rearwardly presented shoulder v30.a'buttingly engaged against the forward end of a heavy com} pression springSl whichis encirclingly disposed around the forwardly projecting end of'the tensioning screw 25, and at its rear end abuts'against the forwardly presented facejof the cross-bar 28, all as best seen in Figures 6 therefrom is .a relatively narrow back post 33 which is provided at its upper end with a relatively large upholstered chair back 34, the latter" being" conventionally/ff panel 35 formed) built upon and around a rigid back of plywood, or other suitable'material. l

The rearwardly presented face of the seat back is; provided centrally of, and adjacent toits lower margin, with a shallow, somewhat rectangular recess 36 for receiving a leaf-type hinge 37 which is also secured to and rockably supports a U-shaped arni-forming element 38, integrally consisting of a bight-like element 39 arcuately v merging at its opposite ends into two forwardly project-( ing parallel arm rests 40. Recessed into the under faces] of the'arm rests 40 approXimately one-third of the way to the rear of the forward ends thereof are downwardly opening metallic socket elements 41, providedwith transversely extending pins 42 havingrspac'ed' bearing collars 43 for journal-forming engagement ir'i'aprertures 44 which'j extend transversely through the flattenediupper ends 45 of upright rods 46, the lower ends of vwhichare bent around arather short radius to form inwardly projecting horizontal stub' shafts 47. These stub shafts 47 extend through apertures 48 formed in the side frames 13 and are supported in bronze bearing bushings'49. Thestub shafts 47 are also axially aligned with each other and project into a tubular cross-shaft which extends horizontally between the bushings 49 and is fastened to the stub shafts 47 by means of pins 51. It will be noted in this connec-V tion that'the end faces of the tubular shaft 50 abut against the bronze bushings 49 so as to hold the stub shafts 47;

against axial translation.

inuse, the hand-nut 29 can be adjusted to 'applyany i desired amount of tension upon the compression spring I 31 which will thereupon hold the arm 17and the assoc'iated back supporting post, together with the chair back 34, in upwardly and forwardly shifted so calledf upright position toappiy'a-desired amount 'of support Rigidlylajttached, by any suitable means, to the attach-l, ment plates 21,fj22, and extending vertically upwardly" g 3 ing pressure against the back of the individual who is seated in the' chair. more relaxed or reclined position, the chair back 34 will be pushed .backwardly and the. arm 17 will swing downwardly around 'thepintle 16 against the counter-balancingforce of the spring 31- to the position .shown' in dotted lines in Figure 3. It will be noted th'at'the seat S will retain its initial position and the arm rests will. assume a comfortably spaced almost parallel relation thereto during the'entire'range of movement of the seat back 34-, thus contributing materially to the posture comfort of the chair. V V t Itis also possible to provide a modified form of posture chair A, asishown in Figures 8, 9 and 10, which is substantially similar to the previously described posture chair A andincludes a' conventional four-branched or cross-shaped base frame 1 supported upon the floor by means of casters 2 and centrally provided with a conventionalvertically adjustable chair-screw 3' and adjustment collar 4, which is mounted upon a conventional swivel bearing 5'.

Rigidly mounted upon the upper end offthe' chairscrew 3' is a U-shaped swivel bracket 6 having a U- shaped bight 7" and spaced parallel flanges 8', 9.

Rigidly mounted upon the under face of an upholstered seat S" are seat irons SZhaving downwardly extending vertical flangesi53 which are pivotally mounted upon a pintle pin54 which extends through, and is supported by, the flanges 8, 9'. 'At' their rearward ends, the seat irons 52 are providedwith a'hinge 55 which is rigidly secured to the lower end of an upwardly extending back supporting post 56, the latter being provided at its upper end with a chair back 29', substantially similar in all respects to the previously described chair back 29, and

tion of its length which extends between the flanges 8',

As the individual leans back to a 9', are depending bracket plates 59 which are transversely spaced from each other and are provided at their lower ends with apertures 60 for swiveling engagement with axial projections 61 of a cross-bar 62, which is substantially similar to the previously described cross-bar 28, and is provided-"with aIcentral. aperture 63 for slidably accommodating. a tension rod 64'which extends therethroughand-at its rear. end is threadedly engaged in a swivelnut 65 which'is also rockably mounted between the flanges'tl, 9'. At'its forward end, the tension rod is rigidly provided with. a large knob 66 and washer 67 which bear against the forward end of a'compression spring 68 disposed encirclingly around the tension rod 64 and abutting at its rear end against the forwardly presented face of the cross-bar 62. I t e As will be seen from Figure 8, the brackets 59 are shaped somewhat in the form of a bell crank and are 7 provided at their upper ends forwardly of the bight-eleof the seat irons 52.

In use, the knob 66' is turned to adjust the tensioning screw 64 andcompression spring 68 to any desired degree in the usual manner and the chair A will normally assume the upright position shown in full lines in Figure 8.- When an individual is seated in the chair A, the chair back. 29' will thus be held comfortably and supportingly against the individuals back and will swing backwardly'to the position shown in dotted lines in Figure 8 or any intermediate position as the individual leans rearwardly. It will be noted that as the chair back 29 swings rearwardly, the seat S will tilt upwardly at its forward margin and drop downwardly at its rearward margin, and, similarly, the arms 40' will swing upwardly and rearwardly into a comfortably disposed relative position with respect to the seat Si and the chair back 29'.

it should be understood that changes and modifications in the form, construction; arrangement, and combination of the several parts of the. posture chair may be made and subtitutedfor'tl'iose herein shown and'described without departing from the nature-and principle of my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A posture chair comprising upright support means, seat supportingfbrack'et' means mounted on the upper end of'the support means, a seat mounted on said bracket means to form, in combination therewith, a seating assembly, an arm pivotally mounted on the bracket and extending rearwardly therefrom a back member mounted On the said arm and extending upwardly at the rear of the seat, spring means operatively associated with the bracket means for biasing the back member forwardly into an upright position in relation to the seat member, a

Ushaped arm rest hingedly mounted on the rear of the back member and having a pair of forwardly extending arms, and means hingedly connected to the underside of the arms forwardly of the' back member, said last-men tinned means also including horizontally extending bight means journaled in the seating assembly for causing the arm rest means to change its position in relation to both the seat and back member as the back member swings rearwardly against the bias of the spring means.

2. A posture chair'comprising upright support means,

seat supporting bracket meansmounted on the upper end.

of the upright support means, a seat mounted on said bracket means to form, in combination therewith, a ing assembly, an arm pivotally mounted on the bracket and extending rearwardly therefrom a back member mounted on the said arm andextending upwardly at the rear of the seat, spring means operatively associated with a the bracket means for biasing the back member forwardly into an upright position in relation to the seat member, a U-shaped arm rest having a pair of arm-forming members extending forwardly on either side of the back member in upwardly spaced relation to the seat and being connected by a transversely extending bight which is, in turn, hingedly mounted on the rear of the back member, and U-shaped means having upwardly extending legs which are respectively hingedly connected at their upper ends to each arm-forming member forwardly of the back member, said U-shaped means also having substantially horizontal bight means journaled in the seating assembly for causing the arm rest means to change its position in relation to both the seat and back member as the back member swings rearwardly against the bias of the spring means.

3; A posture chaircomprising pedestal means having a vertically adjustable upright post, a seat supporting bracket mounted on the upper end of the post, a seat mounted on said-bracket, a back member hingedly mounted on the rear end of the bracket separately of the seat member so as to swing rearwardly and downwardly independently of the seat member, said back member extending upwardly from the bracket rearwardly of the seat, spring means operatively associated with the bracket for biasing the back member forwardly into an upright position in relation to the seat member, a U-shaped arm rest. means having a substantially horizontal bight member extending transversely across and being hingedly mounted on the back member, said arm rest means having a pair of forwardly extending arms each provided with downwardly presented recesses located forwardly of said back member, and rod-like members hingedly connected at their upper ends in said recesses and having opposed horizontally extending stub-shaft portions journaled in the seat for causing the arms to change position in relation to both the seat and back member as the back member swings rearwardly against the bias of the spring means.

4. A posture chair comprising pedestal means, seat supporting bracket means mounted on the upper end of the pedestal means, a seat rigidly mounted on said bracket means, an arm rockably mounted on said bracket and extending rearwardly thereof, a back member secured to said arm separately of the seat member so as to swing rearwardly and downwardly independently of the seat member, said back member extending upwardly from the rear of the seat, a tensioning screw shiftably mounted on said bracket and being provided with means for engaging said arm, spring means operatively associated with the tensioning screw for biasing the back member forwardly into an upright position in relation to the seat member, a U-shaped arm rest means having a substantially horizontal bight member extending transversely across and being hingedly mounted on the back member and having forwardly presented arms, and means hingedly connected to the arms forwardly of the back member and also hingedly mounted upon the seat for causing the arm rest means to change its position in relation to both the seat and back member as the back member swings rearwardly against the bias of the spring means.

5. A posture chair comprising pedestal means having a vertically adjustable upright post, a seat supporting bracket mounted on the upper end of the post, a seat mounted on said bracket, an arm rockably mounted on said bracket and extending rearwardly thereof, a back member rigidly secured to said arm for rearward and downward swinging movement independently of the seat member extending upwardly from the rear of said seat, a cross plate secured to said arm and being provided with an aperture, a tensioning screw shiftably mounted on said bracket and being provided with a hook-like portion projecting through said aperture, spring means encircling said tensioning screw for biasing the back member forwardly into an upright position in relation to the seat member, a U-shaped armrest means having a substan tially horizontal bight member extending transversely across and being hingedly mounted on the rear of the back member, said arm rest means including a pair of forwardly extending arm-forming members each provided with downwardly presented recesses located forwardly of said back member, and rod-like members hingedly connected at their upper ends in said recesses and having opposed horizontally extending stub-shaft portions journaled in the seat for causing the arms to change position in relation to both the seat and back member as the back member swings rearwardly against the bias of the spring means.

6. A posture chair comprising pedestal means having a vertically adjustable upright post, a seat supporting bracket mounted on the upper end of the post, a seat mounted on said bracket, an arm rockably mounted on said bracket and extending rearwardly thereof, a back member rigidly secured to said arm for rearward and downward swinging movement independently of the seat member extending upwardly from the rear of said seat, a cross plate secured to said arm and being provided with an aperture, a tensioning screw shiftably mounted on said bracket and being provided with a hook-like portion projecting through said aperture, spring means encircling said tensioning screw for biasing the back member forwardly into an upright position in relation to the seat member, a U-shaped arm rest means having a substantially horizontal bight member extending transversely across and being hingedly mounted on the rear of the back member, said arm rest means including a pair of forwardly extending arm-forming members each provided with downwardly presented recesses located forwardly of said back member, rod-like members hingedly pinned at their upper ends within said recesses and having spaced aligned horizontally extending stub-shaft portions journaled in said seat, and a hollow cross shaft joining said stub-shaft portions and being rigidly connected thereto, whereby said rod-like members cause the arms to change position in relation to both the seat and back member as the back member swings rearwardly against the bias of the spring means.

References Cited in the file of this patent UNITED STATES PATENTS 229,701 Hartley July 6, 1880 235,184 Wakefield Dec. 7, 1880 2,329,327 Boerner Sept. 14, 1943 2,447,601 Sengpiel Aug. 24. 1948 2,547,455 Freeman Apr. 3, 1951 2,587,176 Larson Feb. 26, 1952

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