Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2549902 A
Publication typeGrant
Publication dateApr 24, 1951
Filing dateOct 2, 1945
Priority dateOct 2, 1945
Publication numberUS 2549902 A, US 2549902A, US-A-2549902, US2549902 A, US2549902A
InventorsHibbard Donald L, Homsey Samuel E
Original AssigneeHibbard Donald L, Homsey Samuel E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Seat
US 2549902 A
Abstract  available in
Images(3)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

April 24, 1951 D.-L. HIBBARD ET AL SEAT 3 Sheets-Sheet 1 Filed Oct. 2, 1945 INVENTORS DONALD L. HIBBARD SAMUEL E. HOMSEY ATTORNEY April 24, 1951 Filed Oct. 2, 1945 A I \III HiBBARD El AL 2,549,902

SEAT

3 Sheets-Sheet 2 INVENTORS DONALD L. HIBBARD SAMUEL E. HOMSEY BY W Wk ATTORNEY April 24, 1951 D. HIBBARDY ET AL SEAT ' 3 Sheets-Sheet 5 Filed Oct. 2, 1945 INVENTORS DONALD L. HIBBARD BY SAMUEL E. HQMSEY ATTORNEY Patented Apr. 24, 1951 UNITED STATES PATENT OFFICE SEAT Donald L. Hibbard, Chevy Chase, Md., and Samuel E. Homsey, Washington, D. 0.

Application October 2, 1945, Serial No. 619,856

7 Claims. I

Sitting posture varies widely among individuals, yet commercially available chairs are for the most part of stereotype construction. No two persons have identical physical configurations, nor do they assume precisely the same sitting positions for maximum comfort.

Attempts have been made to construct the most comfortable average seat based upon data obtained from a large number of persons seated in a highly adjustable chair provided with indicative scales. This disclosure appears in U. S. Patent No. 2,359,318, dated October 3, 1944, and in the name of W. E. Lay et al. An adjustable chair combined with a foot stool of variable height for the use of upholsterers in ascertaining data for the design of custom furniture has also been proposed in British Patent No. 150,117, completely accepted on September 2, 1920, and in the name of A. T. Prentice. A chair back supported by spring pressed pads which are locked in place after an occupant has assumed his favorite positions in the chair is described in U. S. Patent No. 958,356 dated May 17, 1910, and in the name of P. G. A. Bode. But none of these prior art disclosures takes into sufficient account the varied requirements of individuals and their peculiar needs based upon either normal physiques or deformities.

In accordance with the present invention, a device is produced which may in itself constitute a chair, or may be used to conform to the requirements of a customer and serve as a pattern or gauge for the construction of a chair, settee, bench or other form of seat. The device may be highly adjustable and sturdy in construction, and at the same time, inexpensive to build and simple to use.

The device may comprise a frame supporting a flexible seat and back whose contours may be adjusted at a plurality of points both longitudinally and transversely of the seat and back respectively. The inclination and height of the frame may be adjusted with respect to the floor, the inclination of the seat and back may be adjusted, each with respect to the other, the depth of the seat may be varied, the spacing between the seat and back may be modified, the height and spacing of the arms may be changed, and the height of the back may be altered by incorporating an adadjustable head rest.

When employed as a guage, the various adjustments will be made to best conform to the requirements of. an individual, whereupon, the dimensions will be recorded for use in the construc- The chair depicted in the drawings comprises side members It] joined by a front brace 12 and a rear brace l4, suitably united to constitute a frame. The four lower corners of the frame are provided with vertical slots l6 for the reception of bolts l8 employed to secure feet or legs 20 adjustably to the frame. The ends of the bolts threadedly receive winged nuts 22 to secure the legs in any adjusted position.

The seat 24 comprises arigid frame defined by a top surface 26 having longitudinal members 28, transverse rounded members 30 and lower slats 32 joined thereto. A flexible covering 34 of such material as sponge rubber is stretched over the top surface 26 and around the transverse members by means of springs 36 secured to the covering 34 and slats 32. The covering 34 is conformed to the proper contour suitable to the body of the user by means of distending elements 38 comprising heads 40 imbedded in or otherwise secured to the flexible covering, and spaced at convenient intervals longitudinally and transversely thereof. Each of the heads is mounted on a shank or rod 42 which is slidably received through a sleeve 44 fastened to the underside of the top surface 26. These rods are secured in any adjusted positions with reference to their respective sleeves by means of thumb screws 4-6 threaded through a wall of each sleeve. g

The longitudinal members 28 of the seat frame are provided with forward and rear slots 48 which supporting surface 58, side members 6!), rounded end members 62, and rear slats 6d. Springs 66 fastened to these slats are also connected to the ends of a flexible covering 68 such as sponge rubber, which is presented in taut condition to the back of the occupant of the chair. As in the case of the seat, the back covering receives a plurality of distending elements l9 having heads 12 imbedded in or otherwise suitably attached to the covering material to adjust its contour to conform with the requirements of the occupant. Each head 72 is mounted on a shank or rod M,

which is adjustable through a sleeve It fastened to the supporting surface 58. Each sleeve is provided with a threaded opening in its wall to receive a headed set screw 18 for securing the rod in any adjusted position.

The side members '60 of the I provided with elongated slots 80 to permit adjustment of the spacing'between the lower end of the back and the seat, the back being clamped in adjusted position by means of a bolt 82 projected through the slot and through an opening in its adjacent side member ID.

The axial clamping is effected by means of a winged nut 84 threaded on the end of the bolt. A similar elongated slot 86 is formed in each side member 66 of the back frame in alignment with the slot 88 to receive a bolt 88' projecting there-- through and through an arcuate slot 98 provided at the upper portion of each side member ill. By virtue of the slot arrangement, the inclination of the back with respect to the seat can be adjusted over a wide range and clamped in any adjusted position by means of a winged nut 92 threaded on each of the bolts 88.

Each sidememberlifl of the back frame has projecting from its upper edge, an extension Q4, attachedto its respective side member'by one or more bolts 96. These extensions adjustably support a head rest 98 having a frame comprising a supporting surface I80, a convexupper edge I82, a concave lower edge IM, and ends I06. A flexible, resilient covering I08 of sponge rubber or the like is applied to the supporting surface and around the upper and lower edges, having its ends tied together by a suitable number of helical springs H0. To impart a desired contour to the flexible covering I68, one or more transverse rows of distending elements H2 are provided, each having a convex head H4 mounted upon a rod H 6 which slides through a sleeve :58 in which it is clamped in any adjusted position by a headed set screw I20. he ends of the head rest frame are formed with arcuate slots I 22, permitting adjustment with respect to bolts I24 which pass therethrough and through openings in the upper ends of the projecting extensions 94. Here again, clamping action is effected with winged nuts 25 threaded upon the bolts.

The spacing and inclination of-the chair arms. I28 arealso adjustable. Eachside member of the chair frame is provided with an elongated vertical slot I30 for reception of a bolt I32 projecting therethrough and through an'openingiin avertical arm support 134 to, receive a winged clamping nut I36. The upper end of the vertical arm support i pivotally related to the forward end of a horizontal arm support Hi8 by means of a suitable nut or rivet 140. The horizontal arm support contains an elongated horizontal back frame are I 4 effected by a winged nut I threaded on each such bolt.

Each horizontal arm support I38 receives a pair of bolts I46 which project through transverse slots H58 in each arm rest I50. When the bolts are loose, the arm rests may be adjusted towards and away from one another until the desired spacing is attained, whereupon, the bolts will be tightened to clamp the parts as adjusted.

With the high degree of adjustabilit possessed by the device illustrated and described, it will be clear that it will adapt itself to the needs of any individual whom it is desired to accommodate. The form of the invention illustrated is but one example of the manner in which the invention may be applied, and is not to be restrictive beyond the scope of the appended claims.

We claim:

1. A chair comprising a frame, a longitudinally and transversely flexible seat member carried by said frame, a plurality of contour modifying elements arranged in longitudinally spaced rela tionship with respect to a surface of said member, a plurality of contour modifying elements arranged in transversely spaced relationship with respect to said surface of said member, and a clamping member individual to each of said elements individually and adjustably securing each of said elements with respect to said frame independently of the others.

2. A chair comprising a frame, a longitudinally and transversely flexible back engaging member carried by said frame, a plurality of contour modifying elements arranged in longitudinally spaced relationship with respect to a surface of saidmember, a pluralit of contour modifying elements arranged in transversely spaced relationship with respect to said surface of said member. and a clamping member individual to each of said elements individually and adjustably securing each of said element with respect to said fram 1 independently of the others.

3. A chair comprising a frame, longitudinally and transversely flexible seat and back engaging members carried by said frame, a plurality of contour modifying elements arranged in 1ongi.-

tudinally spaced relationship with respect to a.

surface of each of said members, a plurality of contour modifying elements arranged in transversely spaced relationship with respect to said surface of each of said members, and a clamping member individual to each of said elements individually and adjustably securing each of said elements with respect to said frame independently '1 of the others. 7 i

l. An article of furniture comprising a frame,

a longitudinally and transversely flexible occupant supporting member carriedby said frame, a

of the others.

5. An article of furniture comprising a frame,

a longitudinally and transversely flexible occu' pant supporting member carried by said frame, a

plurality of contour modifying elements secured to said member and arranged in longitudinally and transversely spaced relationship with respect to a surface of said member, and a clamping member individual to each of said elements individ-..-- ually and adjustably' securing each of said ele 5 ments with respect to said frame independently of the others.

6. An article of furniture comprising a frame, a longitudinally and transversely flexible occupant supporting member carried by said frame, tensioning means connecting said member and frame, a plurality of contour modifying elements arranged in longitudinally spaced relationship with respect to a surface of said member, a plurality of contour modifying elements arranged in transversely Spaced relationship with respect to said surface of said member, and a clamping member individual to each of said elements individually and adjustably securing each of said elements with respect to said frame independently of the others.

7. An article of furniture comprising a frame, a longitudinally and transversely flexible expanded rubber occupant supporting member carried by said frame, a plurality of contour modifying elements arranged in longitudinally spaced relationship with respect to a surface of said member, a plurality of contour modifying elements arranged in transversely spaced relaticnship with respect to said surface of said member, and a clamping member individual to each of said elements individually and adjustably securing each of said elements with respect to said frame independently of the others.

DONALD L. HIBBARD. SAMUEL E. HOMSEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 153,478 Cutter July 28, 1874 154,069 Morrison Aug. 11, 1874 178,720 Brintnall June 13, 1876 179,259 Born June 27, 187.6 560,547 Shotwell May 19, 1896 597,878 Crandall Jan. 25, 1898 958,356 Bode May 17, 1910 1,256,856 Wittweir Feb. 19, 1918 1,465,291 Walker Aug. 21, 1923 1,506,464 Alten Aug. 26, 1924 1,685,770 Bowen Oct. 2, 1928 1,800,668 Shaver Apr. 14, 1931 1,947,410 Emerson Feb. 13, 1934 2,260,976 Jones Oct. 28, 1941 2,359,318 Lay et al Oct. 3, 1944 2,363,054 Fields et al Nov. 21, 1944 FOREIGN PATENTS Number Country Date 150,117 Great Britain Sept. 2, 1920

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US153478 *Jul 28, 1874 Improvement in invalid-chairs
US154069 *Apr 13, 1874Aug 11, 1874 Improvement in dentists chairs
US178720 *May 3, 1876Jun 13, 1876 Improvement in recliwng-chairs
US179259 *Oct 29, 1875Jun 27, 1876 Improvement in fo
US560547 *Feb 12, 1896May 19, 1896 Convertible chair
US597878 *May 11, 1897Jan 25, 1898 crandall
US958356 *Nov 1, 1909May 17, 1910Philipp Gustav August BodeUpholstered chair.
US1256856 *Sep 14, 1916Feb 19, 1918John J Wittwer SrChair.
US1465291 *Jul 28, 1919Aug 21, 1923Charles J WalkerAdjustable high chair
US1506464 *Jul 22, 1924Aug 26, 1924Victor Graf V AltenCollapsible easy chair, couch, etc.
US1685770 *Jul 6, 1926Oct 2, 1928Bowen Richard EAdjustable vehicle seat
US1800668 *Jul 19, 1929Apr 14, 1931 Adjustable high chair
US1947410 *Jan 9, 1934Feb 13, 1934Harry A FreemanFolding chair
US2260976 *Dec 24, 1938Oct 28, 1941Posture Res CorpChair
US2359318 *Jun 12, 1941Oct 3, 1944Lyman C FisherSpring construction and method of assembling
US2363054 *Jun 3, 1942Nov 21, 1944 Chair
GB150117A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2756809 *Jun 30, 1954Jul 31, 1956Ernst EndresenBack support for chairs, car seats, and the like
US2771124 *Jan 10, 1955Nov 20, 1956Borsani OsvaldoDivan with independently adjustable back and seat
US3081129 *Dec 16, 1960Mar 12, 1963Ann Ridder ClaraChairs and seats
US3111345 *May 25, 1961Nov 19, 1963RenaultUpholstery of seats and seat-backs, in particular for the seats of automobile vehicles
US3112137 *Jan 15, 1962Nov 26, 1963Drenth John BJig for making custom chairs
US3124389 *Sep 7, 1961Mar 10, 1964 mi kan
US3203732 *Jan 28, 1963Aug 31, 1965Hoffman William AChair having adjustable back and seat
US3284134 *Apr 30, 1964Nov 8, 1966Air FranceAdjustable seats
US3945651 *May 31, 1974Mar 23, 1976Paul BoswinkelChair with independently pivotable seat cushion and back frame
US3992057 *Feb 3, 1975Nov 16, 1976Gary Weldon StudebakerSimplified adjustable chair for children with cerebral palsy
US4623194 *May 22, 1984Nov 18, 1986International Diffusion ConsommateurBody-supporting device for wheelchair for handicapped person comprising a structure allowing an upright position
US4648651 *Nov 9, 1984Mar 10, 1987Andrews Maclaren LimitedCollapsible support with armrests
US4728150 *Oct 8, 1986Mar 1, 1988Gaudreau Charles H JunApparatus for wheelchair fittings
US5056863 *Dec 6, 1990Oct 15, 1991Steelcase Inc.Laterally adjustable armrest for a chair
US5240308 *May 24, 1991Aug 31, 1993Goldstein Glenn AErgonomic adjustable chair and method
US5251963 *Sep 8, 1992Oct 12, 1993Nissan Motor Co., Ltd.Vehicular long cruising seat
US5346279 *Feb 18, 1993Sep 13, 1994Pecorella Michael NOrthopedic appliance
US5393125 *May 28, 1993Feb 28, 1995Steelcase Inc.Height adjustable chair arm assembly
US5415459 *Jun 8, 1993May 16, 1995Hon Industries, Inc.Adjustable width arm rest
US5419617 *Jun 8, 1993May 30, 1995Hon Industries, Inc.Detachable chair arm
US5439267 *May 28, 1993Aug 8, 1995Steelcase Inc.Chair with adjustable arm assemblies
US5582460 *Jun 11, 1993Dec 10, 1996Hon Industries Inc.Pivotable and height-adjustable chair back rest assembly and blow-molded back rest therefor
US5636900 *Feb 14, 1995Jun 10, 1997Gillette Children's HospitalAdjustable seating system
US5951110 *Oct 17, 1997Sep 14, 1999Irwin Seating CompanyContoured plastic seat back
US5971484 *Dec 3, 1997Oct 26, 1999Steelcase Development Inc.Adjustable armrest for chairs
US6033027 *Apr 15, 1999Mar 7, 2000Irwin Seating CompanySeat back with corner indentations
US6042187 *Apr 15, 1999Mar 28, 2000Irwin Seating CompanySeat back with aperture identifiers
US6168237Jul 16, 1999Jan 2, 2001Steelcase Development Inc.Adjustable armrest for chairs
US6168239Apr 15, 1999Jan 2, 2001Irwin Seating CompanySeat back with shaped internal ribs
US6176550Apr 7, 2000Jan 23, 2001Steelcase Development Inc.Adjustable armrest for chairs
US6302486Oct 2, 2000Oct 16, 2001Steelcase Development CorporationSeating unit with adjustable armrest
US6523898May 25, 2000Feb 25, 2003Steelcase Development CorporationChair construction
US6554364Feb 17, 1995Apr 29, 2003Steelcase Development CorporationArticulating armrest
US6913315Sep 10, 2003Jul 5, 2005Steelcase Development CorporationChair construction
US6974189 *Dec 30, 2003Dec 13, 2005Hni Technologies Inc.Vertically adjustable chair armrest
US7066546Dec 30, 2003Jun 27, 2006Hni Technologies Inc.Horizontally adjustable chair armrest
US7201445 *May 26, 2006Apr 10, 2007Optilife Products, Inc.Feeding seat
US7234779Feb 24, 2006Jun 26, 2007Steelcase Development CorporationArmrest with height adjustment mechanism
US7249802Feb 12, 2003Jul 31, 2007Herman Miller, Inc.Back support structure
US7341313Feb 24, 2006Mar 11, 2008Steelcase Development CorporationAdjustable armrest with motion control
US7419222Dec 7, 2005Sep 2, 2008Herman Miller, Inc.Support member for a seating structure
US7510161 *Mar 30, 2004Mar 31, 2009Brose Fahrzeugteile Gmbh & Co. Kg, CoburgLongitudinal guiding element for motor vehicle seat
US7740315Dec 3, 2004Jun 22, 2010Steelcase Inc.Back construction for seating unit
US7740321May 12, 2006Jun 22, 2010Herman Miller, Inc.Suspended pixelated seating structure
US7841666Sep 16, 2008Nov 30, 2010Herman Miller, Inc.Back support structure
US7931257Dec 21, 2006Apr 26, 2011Herman Miller, Inc.Multilayer load bearing structure
US8128175Jun 1, 2009Mar 6, 2012Herman Miller, Inc.Suspension seating
US8186761Jun 18, 2010May 29, 2012Herman Miller, Inc.Suspended pixelated seating structure
US8419133Apr 11, 2011Apr 16, 2013Herman Miller, Inc.Seating structure with independently adjustable back
US8449037Apr 11, 2011May 28, 2013Herman Miller, Inc.Seating structure with a contoured flexible backrest
US8469454Apr 11, 2011Jun 25, 2013Herman Miller, Inc.Back construction
US8691370Jul 24, 2009Apr 8, 2014Herman Miller, Inc.Multi-layered support structure
US20030111888 *Dec 18, 2002Jun 19, 2003Brennan Edward J.Vehicle passenger seat
US20030178882 *Feb 12, 2003Sep 25, 2003Schmitz Johann BurkhardBack support structure
US20050093354 *Dec 3, 2004May 5, 2005Ball Douglas C.Back construction for seating unit
US20050116526 *Oct 22, 2004Jun 2, 2005Herman Miller, Inc.Pixelated support structures and elements
US20050146191 *Dec 30, 2003Jul 7, 2005Machael Jay R.Vertically adjustable chair armrest
US20050146192 *Dec 30, 2003Jul 7, 2005Trego Brian R.Horizontally adjustable chair armrest
US20060091715 *Dec 7, 2005May 4, 2006Herman Miller, Inc.Support member for a seating structure
US20060226691 *Feb 24, 2006Oct 12, 2006Steelcase Development CorporationArmrest with height adjustment mechanism
US20060238004 *Apr 11, 2006Oct 26, 2006Conner John PModular seating system
US20060238011 *Feb 24, 2006Oct 26, 2006Steelcase Development CorporationAdjustable armrest with motion control
US20060255228 *Mar 30, 2004Nov 16, 2006Matthias FischerLongitudinal guiding element for motor vehicle seat
US20070057549 *Nov 1, 2006Mar 15, 2007Ball Douglas CBack construction for seating unit
US20070246873 *Dec 21, 2006Oct 25, 2007Vanderiet Douglas MMultilayer load bearing structure
US20070262634 *May 12, 2006Nov 15, 2007Brill Ryan SSuspended pixelated seating structure
US20090127905 *Sep 16, 2008May 21, 2009Herman Miller, Inc.Back support structure
US20090302662 *Dec 10, 2009Groelsma John CSuspension seating
US20100021685 *Jan 28, 2010Brill Ryan SMulti-layered support structure
US20100253128 *Jun 18, 2010Oct 7, 2010Herman Miller, Inc.Suspended pixelated seating structure
US20130069411 *Sep 20, 2012Mar 21, 2013Brock WalkerBi-level headrest, body support structure and method of supporting a user's cranium
USD637423Apr 13, 2010May 10, 2011Herman Miller, Inc.Chair
USD639091Apr 13, 2010Jun 7, 2011Herman Miller, Inc.Backrest
USD650206Apr 13, 2010Dec 13, 2011Herman Miller, Inc.Chair
USD652657Apr 13, 2010Jan 24, 2012Herman Miller, Inc.Chair
USD653061Apr 13, 2010Jan 31, 2012Herman Miller, Inc.Chair
USD657166Apr 13, 2010Apr 10, 2012Herman Miller, Inc.Chair
DE1278264B *Nov 27, 1964Sep 19, 1968Daimler Benz AgVorrichtung zum Verstellen der Rueckenlehne von Sitzen, insbesondere von Kraftfahrzeugsitzen
DE1282482B *May 25, 1963Nov 7, 1968Daimler Benz AgVorrichtung zum Verstellen der Rueckenlehne von Sitzen, insbesondere von Kraftfahrzeug-Sitzen
EP0117445A1 *Jan 28, 1984Sep 5, 1984Wilfried ThomasDevice for determining the dimensions of seating furniture
EP1700541A1 *Mar 10, 2006Sep 13, 2006Bernhard BornitzOrthopaedic tray system for a seat
WO1994028772A1 *Jun 6, 1994Dec 22, 1994Hon Ind IncAdjustable width arm rest
Classifications
U.S. Classification297/284.3, 297/325, 297/411.37, 297/376, 297/411.45, 297/396
International ClassificationA47C31/00, A47C31/12
Cooperative ClassificationA47C31/126
European ClassificationA47C31/12C