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Publication numberUS2310476 A
Publication typeGrant
Publication dateFeb 9, 1943
Filing dateFeb 3, 1939
Priority dateFeb 3, 1939
Publication numberUS 2310476 A, US 2310476A, US-A-2310476, US2310476 A, US2310476A
InventorsEdwin T Todd
Original AssigneeAmerican Seating Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Chair
US 2310476 A
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Description  (OCR text may contain errors)

Feb. 9, 1943.. E. T. TODD 2,310,476

CHAIR Filed Feb. 3, 1939 2 Sheets-Sheet l J 7 3mm JAKW, W

Patented Feb. 9, 1943 UNiTED sra'rss CHAIR Edwin T. Todd, Grand Rapids, Mich, assignor to American Seating Company, Grand Rapids, Mich, a corporation of New Jersey ApplicationFebruary 3, 1939, Serial No. 254,357

1 Claim.

The present invention relates to chairs and more particularly to a chair having a reclining back. The chair herein shown and described is a modification of the chair structure shown in my copending application filed January 27, 1939, Serial No. 253,063.

The primary objects of the instant invention are to provide a chair of the general character above indicated having means for adjustably fixing the back thereof at a selected angular inclination; to provide such a chair whose angu- I larly adjustable back is normally caused to be tilted forwardly but which may be caused to be tilted rearwardly to selective angular disposition by an occupant thereof; to provide such a chair which is particularly adapted for installation in motor buses, railway coaches and airplanes; to provide such a chair whose operating mechanism is simple and compact, hidden from view and efiicient in operation; and, to provide such a chair which is attractive in appearance, light in weight yet rugged in construction, comfortable in use and reasonably economical in manufacture.

An illustrative embodiment of the invention is shown in the accompanying drawings, wherein:

Figure 1 is a fragmentary perspective view of a portion of the chair frame and the operating mechanism for controlling the adjusted angular inclination of the back thereof;

Figure 2 is a fragmentary perspective view thereof viewed from a different angle;

Figure 3 is a fragmentary rear elevational view of the supporting frame of a pair of chairs disposed side by side and showing the pivotal connections between the tiltable chair backs and their supporting frame;

Figure 4 is a sectional view on lines 4-4 of Figures 3 and 5; and

Figure 5 is a sectional view on lines 5-5 of Figures 3 and 4.

Referring then to the drawings wherein like parts of the structure shown are designated by the same numerals in the several views, a frame for a pair of chairs disposed side by side and of a character particularly adapted for installation in motor buses, railway coaches or airplanes, comprises a pair of spaced horizontally disposed members It, i I, here shown as formed of tubular stock, to provide for rigidity at light weight, respectively supported above the floor and adjacent their opposite ends by front legs l2 and rear legs I 3, likewise of tubular construction.

Arm supports I4, here shown as castings, are disposed on opposite sides of the frame and are secured inwardly of their forward ends to the were opposite ends of the front member ll) whose respective ends are each embraced by an apertured boss [5 integrally formed with the arm supports. Each arm support is likewise secured to an end of the rear member I l whose respective ends are each embraced by an apertured spider member I5 disposed medially of the upper and lower portions of an arm support and integrally cast therewith.

A bowed intermediate rear leg ll likewise of tubular stock supportsv the rear tubular member ll medially of its length and an upwardly projecting portion thereof is provided at its upper end with a bracket l8 to whose opposite sides a pair of spaced U-shaped back supports I9 are pivotally secured adjacent their inner lengths, all as hereinafter more particularly described. I

The outer vertical length of each U-shaped back support is likewise pivotally supported on a bearing member 20 (Figure 3) carried on the upper portion of each arm support I4 at the rear thereof, as hereinafter more particularly described, to thus permit independent forward and rearward tilting movement of each back support. Upholstered backs, not shown, are carried by each U-shaped back support and the opposite sides of each back support are provided with secured angle iron brackets 2!. Upholstered seat cushions, not shown, are mounted on the front and rear members Ill, l I in any suitable manner and a horizontally disposed torque tube 22 secured interjacent the vertical lengths of each U-shaped back support provides for rigidity and against torsional twist of the back support relative to its frame.

The lower end of each outer bracket 2| is provided with an arcuate rack 23 secured thereto as by rivets 24 and a pinion 25 pivotally mounted on a plate 26 secured to the arm support M and within its confines is in detachable meshing engagement with the arcuate rack 23. A triangularly formed plate 21 is pivotally mounted at one of its corners to the plate 26 and a link 28 pivotally connected at one end to the free end of the pinion 25 is pivotally connected at its other end to a rod 29 whose opposite end is secured to another corner of the triangular plate 21. A Bowden control 3% secured at one end to the third corner of the triangular plate 21 has its flexible tubular casing 2| fixedly secured at its inner end to the plate 26 and at its outer end to the upper portion of the arm support Hi. Manual pressure on the knob 32 against the tension of the coiled contraction spring 33 provides for tilting of the triangular plate 21 to effect disengagement of the pinion 25 from the arcuate rack 23 in instances wherein selective angular adjustment of the back support is desired by the occupant of the chair.

Means for eifecting a forward tilting movement of the back support when the pinion 25 is out of meshing engagement with the rack 23 and operable independently of the rack and pinion, comprises the pivot structure best shown in Figures 4 and 5. As shown therein, each U-shaped back support I 9 is provided with a pair of aligned cup members 34, each set into and secured within an oppositely disposed vertical length thereof as by the angle iron bracket 2|. An inner member 35 disposed within each cup member 34 in spaced relation to its circumferential inner wall, is provided with a pair of oppositely projecting studs 36, 31, the stud 36 of each member 35 being seated Within an axially disposed bearing aperture of its cup member and the screw threaded stud 31 of each member 35 is rigidly secured either to the bracket l8 or to a bearing bracket 20 as by the nut 39 screw threadedly tightened upon the stud 37.

Bridging the space between the outer surface of each inner member 35 and the inner surface of each spacedly surrounding cup member 34 is a filler of resilient material 40 such as rubber vulcanized to or highly compressed between said surfaces.

Operation In instances wherein the chair back and its support have been pivotally mounted on the frame in its extreme forwardly movable position, the manual pressure release of the pinion from its rack permits the occupant of the chair to thereafter adjustably fix the chair back at a selected angular. inclination and against the radial stretching of the resilient filler.

Thus it is seen that the tiltable chair back will be caused to return to a forwardly tilted position from its previously rearwardly retained tilted position upon disengagement of the pinion from its rack since the resilient filler which has been radially stretched during the rearward tilting movement of the chair back, tends to return to its normal shape causing a forward tilting movement of the chair back.

It will thus be seen that the chair structure herein shown and described is attractive in appearance, light in weight yet rugged in construction, comfortable in use and reasonably economical in manufacture and while but one specific embodiment of the invention has been herein shown and described, it will be understood that certain details of the construction shown may be altered or omitted without departing from the spirit of this invention as the same is defined by the following claim.

I claim:

A chair structure comprising: a frame; a forwardly-rearwardly tiltable back having a recess extending inwardly from its side; means for turnably mounting the back on the frame including a pivot pin having an outer end portion pivoted on the frame and an inner end portion extending into the recess and having a sleeve of resilient material secured thereon and within said recess for yieldingly resisting the tilting movement of the back, said outer end portion of the pivot pin having a threaded extension with a nut turnable into engagement with the frame for clamping the pivot pin non-turnably thereon.

EDWIN T. TODD.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2549119 *Feb 21, 1947Apr 17, 1951American Seating CoChair structure
US2699351 *Mar 30, 1950Jan 11, 1955Henry A PlattLatch mechanism and control means therefor
US3036862 *Jan 26, 1960May 29, 1962Stuttgarter Karosseriewerk ReuAdjusting device for a folding back for a vehicle seat
US3111343 *May 12, 1961Nov 19, 1963Knoll AssociatesChair adjustment mechanism
US3931996 *Nov 19, 1973Jan 13, 1976Aisin Seiki Kabushiki KaishaAdjustable hinge fitting for a seat with a movable back
US3999800 *May 1, 1975Dec 28, 1976Paccar Inc.Vehicle seat
US4626029 *Jan 3, 1986Dec 2, 1986Protoned B.V.Work chair
US4765681 *Apr 3, 1987Aug 23, 1988Keiper Recaro IncorporatedSeat back recliner with cable release
US4815732 *Nov 2, 1987Mar 28, 1989Pascal MahviStretching an anatomical portion of the human body
US5033792 *Nov 15, 1985Jul 23, 1991Ikeda Bussan Co., Ltd.Armrest-attaching mechanism
US5282670 *Apr 20, 1992Feb 1, 1994Steelcase Inc.Cable actuated variable stop mechanism
US5328242 *Mar 18, 1992Jul 12, 1994Steelcase Inc.Chair with back lock
US5577807 *Jun 9, 1994Nov 26, 1996Steelcase Inc.Adjustable chair actuator
US5630647 *May 26, 1995May 20, 1997Steelcase Inc.Tension adjustment mechanism for chairs
US5630649 *May 26, 1995May 20, 1997Steelcase Inc.Modular chair construction and method of assembly
US5782536 *Feb 17, 1995Jul 21, 1998Steelcase Inc.Modular chair construction and method of assembly
US5873634 *Jan 8, 1998Feb 23, 1999Steelcase Inc.Modular chair construction and method of assembly
US5979988 *Dec 31, 1998Nov 9, 1999Steelcase Development Inc.Modular chair construction and method of assembly
Classifications
U.S. Classification297/301.3, 16/DIG.330, 297/301.6, 297/367.00R
International ClassificationB60N2/235
Cooperative ClassificationB60N2/2352, Y10S16/33
European ClassificationB60N2/235E