US1922418A - Posture regulating chair - Google Patents

Description

Aug. 15, 1933.

L. W. CONANT POSTURE REGULATING CHAIR Filed Sept. 9, 1 930 A TTORNE Y.

'Patented Aug. 15, 1933 v -mm..STA-TES P1ATENrfoFFicejf 1,922,413 .A Y f v'Pos'rURE REof ULA'rINGy CHAIR v Lawrence W.;Conant, High.Point, N-. ,C., assignorv toj-Ko-Rect Posture Chairl Company,High Y, Point, N.` 0;, a Corporation A-of North Carolina Application september 9,1939'. serial No. 480,749v ff s claims'. (o1. 155-158) This, inventionrelates toa posture regulating' chair and more ;espe'cially,- to a chairhaving means for adjusting'the back portion to suit the height of the occupant for providingy an all around oice chair adapted to be adjusted to suit the individual requirements of the occupant, and is broadly classied as a posture regulating chair.

An object of my invention is to provide a chair in which the reclining or back portion can be regulated to suit therequirements 'of the -particular occupant of the chair. j

Another object of Vthe invention is to provide in a chair a lumbar Ysupport 'which can be adjusted verticallywith relation tothe seat ofthe chair and which can also be adjusted forwardly and rearwardly.

Some .of the objects of my invention having been stated other objects'will appear as the description proceeds, when taken in connectionwith lthe accompanying-drawing, in which- Figure 1 is a perspective View of my chair; Figure 2 is a top plan view of the back restj n Figure 3 is a side elevation of the structure looking at the left hand end of Figure2;

In Figuresv lfto 3 inclusive I show my chair having leg members 101, 102, 103 and 104 'which leg members have the braces 105, 106 and 107,

securing the same toeach othervand` the lower end of these leg portions have secured thereon the tubular members 108, which nt over the low-`v er portion of the legs of 101 to 104 inclusive.

Slidably and adjustably mounted within the tubular members108 are the other tubular mem- 4bers 112. n v

The members 101 to 104 inclusive have the cross-pieces 116 secured thereto on which is secured a seat portion 121. v The post members 102 and ,103 project up 4Q wardly at the rear of the` seat portion and the cross-piece 123 is secured'ther'eto and intermediate the seat portion andthey member 123, I`

secure a verticallyfadjustable member 125 having 5. a slot 126 therein with a bolt 127 piercing the "postmembers 102 and 103, with thethumb nut 128 thereon for purposes of vertically adjusting the members 125 with relation to the post members. The member 125 has a pin 125a which n slides in the vertically disposed slot 125D in each "of the posts 102 and 103 to preventr swinging movement of members 125. Pivotally secured to each of the members 125 is va member 130 which has an arcuateA slot 132 therein with a plurality of cavitiesv 133 in the upper edge there- V vof which are 'adapted to meshjwith a pin 134 to the 'members' 1,30 during adjustment.

`r'egulaten'the lposition of the members 130. The

pins 131 move in vertically disposed slots 136 in Y yThejrmembers 130..v have the pins y upper .end thereof with-v the upwardly projecting 'lug'141and to these pins 140 are pivotally secured-the members 142 rwhich are secured tothe backrest portion 143 which is padded as at 144. These members 142 have the overhanging lips 145 which project over the members 130 and fall within ythe path of the lugs 141 so as'to prevent the back rest portion 143 from falling too far forward and downward but'allowing the same vto be raised upwardly.

In the drawing and specication I Vhave setV forth a preferred embodiment of my invention,

' and' although specific-terms are employed, they are used ina generic and descriptive sense only,

and not forpurposes of limitation, the scope of 'the invention being set forth in the appended` claims. 1 y

I claim:

. k1. In a chair vhaving back'postsy projecting Yabovelthe seat portion,l each post havinga vern tically extending slot therein, a bracket having Veach of said brackets, each of said upwardly projectingvV members having an arcuately disposed l toothed slot therein, a pin on each of said brackets and projecting.intosaidtoothed slotf'or engagement with the teeth in said toothedjslot to Y hold 1 the upwardly projecting member in adjusted position, and alumbar 'support pivotally secured at its ends'yto the upper ends of 4said upwardly projecting members. Y l I 2.' In a chair having the rear posts extending above the -seatportion of the, chair, a bracket member securedfor vertical adjustment along and loosely securedat its lower end to said vbracket and having an arcuate toothed slot therein, aVv pin on the bracket projecting into Vsaid. toothed therein, a bracketsecured to each post and having a portion extending into 'said slot, meansl for adjustably securing the bracket to said post, each in the' SO- f ooiV Veach post, an upwardly projecting armslidably TLG@ of said brackets having upper and lower projecting pins thereon,l an arm slidablysecured to each slot therein, the said upper pin projecting into said toothed slot, a lumbar support pivotally secured to the upper ends of said arms, the arms being adjustable by raising the same and swinging them to a new position and then lowering said arms to cause the'upper pins to engage said toothed slot in a new position.

4. In a chair having back postswith vertically disposed grooves therein, a bracket having a portion projecting into each of said grooves. and means for adjusting said brackets along said grooves, an arm having a pivotal connection at its lower end to each of said brackets,` said pivf etal connection comprising a pin in the bracket and a slot in said arms to permit vertical rnczlve-A ment of said arms, each of said arms having a curved slot with a rack in one side thereof, a pin on each bracket projecting into said last slot;

and a lumbar support pivotally secured at its ends to the upper ends of said arms.

5. In a back rest for chairs, a lumbar Support, arms pivotall'y connected to. each end of the sup,-

port, eaeh armhaving e vertically disposed. Slot.

in its lower end, each arm also having an arcuate Slet therein whose center is thelewer end 0f the vertically disposed slet, a reels dispesed along the.

upper edge of each of the arcuate slots, a bracket mounted on each arm, pins in each bracket protruding through both of said slots, means for adjustably securing the brackets to the back of the chair, the arms and lumbar support being raisable as a unit for backward and forward adjustment and lowerable to cause the pin in each arcuate slot to engage its rack to hold the arms and lumbar support in adjusted position.

6. In a chair having rear posts, a form-tting lumbar support, a pair of arms pivotally connected to the ends of the support, a vertically disposed Slot-n the lower end of each arm, a transversely disposed arcuate slot in each arm, a vertically adjustable bracket mounted on each arm and each postl a pair of spaced pins in each bracket projecting into the set of slots in each bracket, one edge of Veach of the arcuate slotsA I 15o'y

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