US2763318A

US2763318A - Flexible contour chair

Info

Publication number: US2763318A
Application number: US297327A
Authority: US
Inventors: Bertoia Harry
Original assignee: Knoll Associates Inc
Current assignee: Knoll Associates Inc
Priority date: 1952-07-05
Filing date: 1952-07-05
Publication date: 1956-09-18
Anticipated expiration: 1973-09-18
Also published as: GB814554A; CH355576A; US2804915A

Description

Sept. 18, 1956 H BERTOIA FLEXIBLE CONTOUR CHAIR Filed July 5, 1952 United States Patent FLEXIBLE CONTOUR CHAIR 7 Harry Bertoia, Pennsburg, Pa., assignor to Knoll Associates, Inc., New York, N. Y.

Application July 5, 1952, Serial No. 297,327

8 Claims. (Cl. 155-50) This invention relates to articles of furniture and more particularly to articles of repose for supporting the body of a person.

An object of the invention is to provide an article of repose, for example a chair, wherein a shell-like body including the back and the seat of the article is carried by a support in such a manner that stresses due to the sitting of a person on the article are most advantageously distributed throughout the entire system.

Another object of the invention is to provide an article of repose wherein a shell-like body including the back and the seat of the article is connected with a support at two points on each side of the article and, yet, a person sitting on the article may perform rocking movements to some extent.

A further object of the present invention is to improve on the art of articles of repose as now customarily made.

Other objects and structural details of the invention will be apparent from the following description when read' in conjunction with the accompanying drawings forming part of this specification, wherein:

Fig. l is a perspective view of a chair according to the invention,

Fig. 2 is a side elevational view of the chair shown in Fig. l, a

Fig. 3 is a perspective view of a detail of the chair shown in Fig. l, and

Fig. 4 is a side elevational view of a different embodiment of a chair according to the invention.

Referring now to Figs. 1-3, generally indicates a support substantially in the shape of a cradle made of rods welded together. Said support 10 comprises two

side frames

12 and 14, one on each side of the chair, said side frames being connected with each other by

transverse rods

16 and 18. The side frame 12 comprises two

uprights

20 and 22 connected with each other by a lower connecting member 24 and an upper connecting member 26; according to the embodiment shown in the drawings the

members

20, 22, 24 and 26 of the side frame 12 are made of a single rod having its ends welded together, whereby a closed frame of an endless rod is formed. In a similar manner the other side frame 14 is in the shape of an endless rod frame having the

uprights

28 and 30 and the connecting

members

32 and 34. The cradle, thus formed by the

side frames

12 and 14 connected with each other by the

transverse rods

16 and 18 being rigid in vertical direction for safely carrying a load is resiliently flexible in forward and backward direction to a certain extent, so that, for example, the up

rights

20 and 22 may assume the reclined position 20' and 22 shown in Fig. 2.

36 generally indicates a shell-like body including a back 38, a seat 40 and side-

walls

42 and 44. According to the embodiment shown in the drawings, said shell-like body has no arm-rests, but, if desired, arm-rests could be included in said shell-like body.

2,763,318 Patented Sept. 18, 1956 to the arrangement of the wires 48. At the points of contact, the

wires

46 and 48 are welded together as best shown in Fig. 3. Thus, the shell-like body 36 is made of a material having the appearance of a network.

A continuous wire rim 37 extends around the periphery of the body 36 and is attached to the ends of the

wires

46 and 48. This attachment may be made in any suitable manner, for example, by welding similar to the welding of the

wires

46 and 48. Owing to the construction of the shell-like body described above, it is resiliently flexible in itself to some extent, so that the shell-like body may be deformed slightly and give, when a person sitting on the chair presses against the back 38 for performing a rocking movement. When the pressing action by the person stops, the shell-like body automatically assumes again its original form.

At each side of the chair, the support 10 is attached to a side-

wall

42, 44 respectively at two spaced

points

50, 52 and 54, 56 respectively. Said points are locatedshown in Fig. 3 at the point of attachment a plate 58' having a bore is welded to adjacent wires 48 of the shelllike body 36. The side frame 10 is attached to said plate 58 by means of a screw 60 passing through registering bores of the side frame 10 and the plate 58.

Owing to the attachment of'the support to the shelllike body 36 at two spaced points at each side-wall, substantially in the center of the latter, the upper portion of the shell-like body is supported by the support while the lower portion of the shell-like body is suspended from the support. Thus, stresses due to the sitting of a person on the chair are most advantageously distributed throughout the system. The partial support and partial suspension of the shell-like body permits the distribution of the Weight throughout the entire wire system of the shell-like body.

Even if the support is rigid in every direction, a person sitting on the chair may perform slight rocking movements of limited degree, as for the reasons set forth above, the shell-like body made of wires arranged and connected with each other substantially in the shape of a network is resiliently flexible in itself and may be slightly deformed. The resiliency inherent in the shell-like body tends to reinstate its original form thus assisting in the rocking movements. A somewhat larger degree of rocking movements may be obtained, when the support 10 is also somewhat resiliently flexible in forward and backward direction.

According to the embodiment shown in Fig. 4, again the support is attached to the side-walls of the shelllike body 136 at two spaced

points

150, 152, on each side of the chair. Again these

points

150, 152 of attach-' shell-like body 136 could be made of a wire-network, substantially of the type as described above in connection with Figs. 1-3.

side ram s, or examp e the Side frame 112 of the support 110 are open at their upper ends, i. e. the

uprights

120 and 122 of the side frame 112, for example, are not connected by a connecting rod. The side frames of the support 110 are resiliently flexible in forward and backward direction, so that, for example, the uprights 124) nd 1.2. m ya th in li p it n 1 9' an 122 s pesti e yh uppe en s f the si f me e pivotally connected with the shellelike body 136 at the points of attachment.

Thus, according to the embodiment shown in Fig. 4, the shell-like body 136 is also partially supported and partially suspended from the support 110 by the described arrangement of the pivots connecting the support with the side frames of the shell-like body 136 in the center thereof at spaced points, Furthermore, a person sitting aths chai may P r m rock ng mo m in to the pivotal connections between the shell-like body 136 lld the support 110 and owing to the flexibility of the uprights of'the cradle-like support 110.

'I have described perferrc'd embodiments of my invention but it is understood that this disclosure is for the purpose of illustration and that various omissions or changes in shape, proportion and arrangement in parts, as well as the substitution of equivalent elements for those herein shown and described maybe made without departing from the spirit and scope of the invention as set forth in the appended claims.

What I claim is:

1. .A chair or the like comprising a seat-and-back unit for supporting the body of a person, said unit including a continuous wire frame extending around the periphery of the unit, and a network including a first plurality of generally parallel wires attached at their ends to and spanning said frame, a second plurality of generally parallel wires attached at their ends to and spanning said frame and crossing said first plurality of wires at substantial angles and welded connections between said wires at the crossings thereof, said network being contoured to form a seat portion, a back portion, and a curved portion of substantial radius joining said seat portion and said back portion; and a support for said seat-and-back unit comprising two front legs and two rear legs, two transverse members respectively connecting said front legs and said rear legs, four frame members extending upwardly from the ends of said transverse members, and means connecting the upper ends only of said frame members to said network inwardly of said frame and providing the only support for said unit.

2. A chair or the like as defined in claim 1, in which said seat-and-back unit includes side portions connecting said seat-andeback portions, and said connecting means is attached to the seat-and-back unit at said side portions.

3. A chair or the like as defined in claim 2, in which said connecting means comprises, on each side of the chair, two spaced connections between two of said frame members and the adjacent side portion.

' 4Q A chair or the like as defined in claim 3, in Which the front one of said two spaced connections is higher than the rear connection.

5. A chair or the like comprising a seat-and-back unit for supporting the body of a person, said unit including a continuous wire frame extending around the periphery of the unit, and a network including a first plurality of generally parallel wires attached at their ends to and pann sa f a e, a on pl y of ener y parallel wires attached at their ends to and spanning said frame and crossing said first plurality of wires at substantial angles and welded connections between said wires at the crossings thereof, said network being contoured to form a seat portion, a back portion, and a curved portion of substantial radius joining said seat portion and said back portion; and a support for said seat-and-back unit; including two side frames, each comprising lower frame means including a rod bent to form a central hori zontal floor-engaging portion and front and rear leg portions and upper frame means including front and rear frame members connected at their lower ends to the upper ends of said leg portions and extending upwardly and laterally outwardly therefrom, means connecting said seat to the upper ends only of said frame members and providing the only support for said seat, two transverse horizontal frame members respectively connecting the upper ends of the front leg portions and the upper ends of the rear leg portions, each said leg portion extending downwardly and outwardly to the side and to the front or back from its upper end, said upper frame members, said n verse frame member and a d le por ions cooperating to distribute stresses transmitted through the upper frame means of either side to the lower frame means of bothsides.

6. A chair or the like, comprisinga body for supporting a person and a support for the body including two side frames, each comprising lower frame means including a rod bent to form a central horizontal floor-engaging portion and front and rear leg portions and upper frame means including front and rear frame members connected at their lower ends to the upper ends of said upright leg portions and extending diagonally upwardly and laterally outwardly therefrom, means connecting said body only at localities inwardly of the periphery thereof to the upper ends only of said frame members and providing the only support for said body, two transverse horizontal frame members respectively connecting the upper ends ofthe front leg portions and the upper ends of the rear leg portions, each said leg portion extending down? wardly and outwardly to the side and to the front or back from its upper end, said transverse frame members functioning only to distribute a portion of the stresses transmitted through the upper frame means of either side to the lower frame means of the opposite side.

7. A chair or the like comprising a scat-and-back unit for supporting the body of a person, said unit including a continuous wire frame extending around the periphery of the unit, and a network including a first plurality of generally parallel wires attached at their ends to and spanning said frame, a second plurality of generally parallel wires attached at their ends to and spanning said frame and crossing Said first plurality of wires at substantial angles and welded connections between said wires at the crossings thereof, said network being Contoured to form a seat portion, a back portion, and a curved portion of substantial radius joining said seat portion and said back portion; and a support for said seat-and-back unit and means connecting said support to said network inwardly o aid. fr me an Providing the only upp rt for theuuit- 8 A air or th like ompris g a seat-an -back uni for supporting the body of a person, said unit being an integral, resiliently flexible network consisting of a rim extending around the periphery of the network, a first plurality of generally parallel wires extending across said network from one side to the other and being attached at their ends to said rim, a second plurality of generally parallel wires crossing said first plurality of wires at substantial angles, said second plurality of wires also extend ing across said network from one side to the other and being attached at their ends to said rim, and welded con-. nections between said wires at the crossings thereof, said network having an unstressed contour conforming generally to the contour of the body of a seated person, and including a seat portion curving upwardly from the center toward the sides, a back portion curving forwardly from the center toward the sides, and a portion of compound curvature of substantial radius smoothly joining the seat portion and the back portion; a base for said seat-and-tback unit and means connecting said base to said network only at localities inwardly of said rim, so that all stresses due to loads on said seat-and-back unit are transferred through the network and the connecting means to the base.

(References on following page) References Cited in the file of this patent UNITED STATES PATENTS Johnson, Feb. 17, 1953 Bertoia NOV. 10, 1953 Schibrowski Aug. 4, 1925 Trudo Dec. 4, 1928 McGowen Jan. 2, 1934 Stoll Ian. 7, 1936 6 Heimann July 6, 1937 Zerbee Feb. 24, 1942 Hugh Mar. 17, 1942 Burn Sept. 5, 1950 Saarinen Feb. 13, 1951 FOREIGN PATENTS Switzerland May 1, 1935