US2010429A

US2010429A - Seat having adjustable back

Info

Publication number: US2010429A
Application number: US694576A
Authority: US
Inventors: Glass William
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-10-26
Filing date: 1933-10-21
Publication date: 1935-08-06
Anticipated expiration: 1952-08-06

Description

Aug. 6, 1935.. W. GLASS SEAT HAVING ADJUSTABLE BACK Filed Oct. 21, 1953 2 Sheets-Sheet 2 INVE T A ww -k.

Patented Aug. 6, 1935 A v N T TA S PATENT OFFICE William Glass, London, England Application October 21, 1933, Serial No. 694,576

t In Great Britain October 26, 1932 6 Claims. `(Cl. 155-117) l: ,The present invention relates to seats having Figure 3 is a perspective view of the same Chair adjustable backs and is applicable to various types folded up. of seats such as foldingframe chairs with slung Figure 4 is a side view of a Chair having fixed canvas seats, or ohairs With fixed side frames for side frames and with one side frame removed, the

& standing upon a fioor or other surface and with drawing being of a more or less diagrammatic either slung canvas or upholsteredseats For nature.

c onveniene of description all such will be here- Figure 5 is a similar View of another construc- ,inafter referred to as chair s tion of Chair with fixed side frames. An object of `the invention is to provide a con- Figure 6 is a view of a fragment of the side of o rstruction of Chair with back of adjustable inclinaa frame showing a modified form of receSS. m

tion and wherein the weight of the person seat'ed Referring first' to Figures 1-3 inclusve, the minthe chairacts to hold the back firmly in the frame l, which in an Ordinary deck" Chair is adjustedposition. Another object is "to `provide relatively long to constitute the back frame as such a chair which permits of adjustment through well as the front legs, is made shorter and the side n a range of inclination of the back by a person rals of a Second frame 2 are pivoted at 3 to the u seated thereon without "rising from the Chair. upper or rear ends of the side rails of the frame l 'Anotherobject is to provide a folding framechair the inside thereof. Another frame 4 formng "of the-deck Chair type with adjustable back Which a seat frame member is provided pivoted to the is practicauy .proof against accidental collaps'ing outside of the rails of frame I at 5, this frame when ocpiedand still another object is to proconstituting the backlegs and its front having at- 20 Vide a chair of this type `which can be veryie'asily tached to it at 6 the front end of the canvas seat jfolded or erected and' Which can be folded into 7,' the rear and upper end of which is attached to a omparatively short length. i the upper end of the frame 2 at B. The lower In a 'Chair 'according 'to the invention a, back "ends of theside rails of the frame 2 are provided 5 'name 'is' pivted, at a point intermediate its ends W h ou w ly projecting pp n members 9 andpi'efrably towards the lo'wer end, to a part Which in the erected position of the Chair abut on of the frame of the Chair, and the lower ends of the upper surface of the seat frame member 4 bethe ,back' frame `When 'in erected position; or a d t e p v t When the frame 2 is p p mem er or members mounted thereon, bear upon dicular to the frame member 4 and within a cer- 'the upper surface of the rear portion of a seat tain range of deviaton from the p p ula 30 frame pivoted' intermedi'ate its front and rear position. the friCtCn between the be s 9 nd ends of the same part of the'frame 'of the Chair the frame member 4 due to the weight of the 'gara point somewhat forward of the lower ends of person using the chair is sufficient to hold the jtheback'inerected position, So that Weight applied fra 2 d y in the position to which it is adon the front end of the seat frame will press the just/ed, and within this range the inclination of 5 rear end upwards against the lower end of the the back frame 2 Can be adjusted by a person back frame or the said member' or members Seated in C a by p Du l g on the mounted thereon A flexible seat is connected at upper end 8. TO p t j s e in this manits front end in `a hinged manner to the front of beyond the range at Which fricton Wm hold 4.o th seat n and at its rear end n a, Simflar the back in position, the side rails of the frame 40 manner to the back frame, preferably at or near member 4 arrecssed at H of the e p r e of the latter. i V recesses constituting stops to llmit the possible In order that the invention thus briefiy demovement' The recess may lf desired be d, as designated by l ua to give an improved scribed may be fully understood and carried Into cu'v practice, and to show how the objects hemmbe frictlon giip thloughout the range of ad ustment.

Between the recess lll and the pivot 5 each' side rail fore mentloned are attalned, It will now be deframe member 4 ispmvded with a notch n. Scribed more fully with reference to the accom- With the seat unoccuped the Chair can be So panying drawings' Which inu-Straw certain adjusted that the members 9 engage the notches structional embodiments of the invention. |2 to provide a reclnng position as shown in 59 In these drawings, Figure 2. Fi e 1 i a p p iv v ew of a fo1ding Or To fold the Chair, the top of the back at s is deck" Chair in One Open positi n. gripped by one hand and lifted to clear the mem- Fgure 2 is a similar view with the Chair in anbers 9 from the top of the frame member 4, the 5 other open position. top 8 is then carried over in the direction of the :the front end e of the seat frame member i.

arrow on Figure 1 and the whole folded on to the ground and the folded Chair can then be picked up with the same hand by grasping the then adjacent front ends of the three frames l, 2 and '1.

The Chair in folded position is shown in Figure 3.

The Chair can also be erected from the folded and carried position by the employment of only the one hand by a reversal of the operations just. mentioned.

The Chair described has many points of advantage. Within the range of adjustment provided by the recesses li? the back is held very firmly in the adjusted position by friction due to the weight of the person seated in the Chair and nevertheless adjustment can be effected by the person seated Without leaving the Chair. Accidental collapsing rom the reclining position (Figure 2) when the Chair is occupied is impossible as even if the notches 52 were absent the members 9 would be locked between the frames i and When folded up as shown in Figure 3 the length is Very much less than in the case of a-n ordinary deck Chair in which a frame such as i is continued to form the back frame. The folded Chair is thus much more convenient to carry.

The upper surfaces of the recesses m may if desired be roughened to provide an improved frie-- tion grip. Obviously the order of the frames 2, l, and member i may be varied in respect of which is the inner one, which the outer one, and which the .middle one. Thus frame 2 may be made the .outer one, frame i the middle one and frame member tl the inner one. The projections 9 would then be on the inside of the side rails of frame 2 and might be constituted by a' continuous bar between the two side rails.

l Figure 4 illustr ates a Chair having fixed side frames 13. The seat fra-mevmember l is pivoted to these side frames at 5 and the back frame 2 is pivoted thereto at 3. A canvas seat is slung between the upper end 8 of the back frame 2 and Recesses li] and notches &2 are provided in the seat frame member to provide for a range of adjustments similar to those described in respect of the ,deck Chair illustrated in Figures 1 and 2, and as .the sides of the seat frame member i and of the back frame 2 are conveniently in the same plane the members 9 of Figures 1-3 are dispensed with member about the pivot 5 and raise the rear por- .tion of the'said frame member towards the pivot 3, thus providing a friction grip between the lower ends a of the sides of the back frame and the upper surface of the sides of the seat frame member. The construction permits of the forward folding .of the back by first raising the front of 'the seat frame member.

Stops indicated at lt may if desired be provided to limit the possible 'movement of the seat frame member when the back is disengaged therefrom and folded forwards.

Figure 5 illustrates a Chair which is very similar to that shown in Figure 4. In place of the can- Vas seat however an upholstered seat is provided formed in two portions 'la and 1b connected together in a hinged manner at 15. The front of the portion 'ib is connected in a hinged manner to the front of the seat frame member at 6 and the top of the portion 'la' is similarly connected to the top of the back frame at 8.

I claim:

1. A foldable Chair with adjustable back, comprising a back frame and a seat frame member, wherein the back frame is pivoted, at a point intermediate its ends and preferably towards the lower end, to a part of the frame of the Chair and the lower end of the back frame when in erected position bears upon the bottoms of elongated recesses provided on the upper surface of the rear portion of the seat frame member which is pivoted intermediate its front and rear ends to the same said part of the frame of the Chair at a point somewhat forward of the lower end of the back frame in erected position, the ends of the said recesses constituting shoulders limiting the backward and forward adjustment of the lower end of the back frame, and wherein a flexible seat is connected at its front end in a hinged manner to the front end of the seat frame member and at its rear end in a similar manner to the back frame, preferably at or near the upper end of the latter.

2. A foldable Chair according to claim 1, wherein the bottoms of the said elongated recesses are curved to give an improved friction grip throughout the range of adjustment of the back frame.

3. A construction of Chair according to claim 1, in which the seat frame member is adapted to contact with the ground at its rear end and also the forward part of the frame to which the back frame and the seat frame member are pivoted.

4. A construction of Chair according to claim 1, in which the part of the frame of the Chair to which the back frame and seat frame member are pivoted, comprises rigid side frames adap'ted to rest on the ground and to form the sole support of the Chair.

5. A construction of chair according to claim 1, wherein the bottoms of the said elongated recesses are curved to give an improved friction grip throughout the range of adjustment of the back frame, and the seat frame member is adapted to contact with the ground at its rear end and also the forward part of the frame to which the back frame and the seat frame member are pivoted.

6. A construction of chair according to claim 1, wherein the bottoms of the said elongated recesses are curved to give an improved friction grip throughout the range of adjustment of the back frame, and the part of the frame of the Chair to which the back frame and seat frame member are pivoted comprises rigid side frames adapted to rest on the ground and to form the sole Support of the Chair.

WILLIAM GLASS.