US2857958A - Pivoted backrest - Google Patents

Description

R. WRIGHT Oct. 28, 1958 PIVOTED BACKREST 5 Sheets-Sheet 1 Filed March 50, 1955 I Ll INVENTOR.

RUsSEL wrangHT.

ATTO R N EY.

Oct. 28, 1958 R. WRIGHT PIVOTED BACKREST 5 Sheets-Sheet 2 Filed March 30, 1955 INVENTOR. RUfiSEL WRIGHT.

Oct. 28, 1958 R1 WRIGHT PIVOTED BACKRE'ST Filed March 30, 1955 5 Sheets-Sheet 3 INVENTOR. RUSSEL WRIGHT,

A RIVEV. v

Oct. 28, 1958 R WRIGHT 2,857,958

PIVOTED BACKREST Filed March 50, 1955 5 Sheets-Sheet 4 INVENTOR. Russe L WRIGHT.

ATTYOR HEY.

Oct. 28, 1958 Y wRlGHT I 2,857,958-

' PIVOTED BACKREST 5 Sheets-Sheet 5 Filed March 30, 1955 INVENTOR. RUSSEL WRIGHT ATTORNEY United States Patent This invention relates to chair constructions. v I

It is the object of the present invention to provide a novel and improved type of chairjcohstructio'n which is greatly Simplified and which is believed to be less costly to r'nanuf actiire than commensurate chairs of this type.

It is the object of the present invention to-provide a chair construction with a novel framework, together with a novel seat construction and method of assembly.

It is the further object of the present invention to pro' vide a novel hack rest and novel means of mounting the same to the framework. A

It is the further object of the present invention to provide a tablet arm construction, together with novel structure'for mounting the tablet arm to the frame of the chair.

It is the further object of the present invention to provide a novel desk type chair construction, together with novel structure for mounting the tablet or support upon the chair frame; I.

These and other objectswill be seen from the following specification and claims in conjunction with the appended drawings, in which:

I Fig; 1 is a front perspective view of the chair embodyin'g'my invention.

2 is a fragmentary front perspective view of a tablet arm chair emtiofdying my invention.

Fig. 3 is a front perspective and fragmentary view of a desk chair constructioh.

Fig. 4 isa left side elevational View of the chair shown in Fig. 1 on a slightly increased scale, with the back rest emitted.

Fig; 5 is a fragmentary front elevational view of the chair shown in Fig. 1 on a slightly rilarged scale arid with the back rest omitted.

Fig. 6 is a fragmentary plan view of the chair shown in Fig. 1. p I

rig. 7 is a fragrnentary plan view of the tablet arm chair shown in Fig. 2, on an enlarged scale.

Fig. 8 is a fragmentary side elevational view of the chair shown in Fig. 2, on an enlarged scale.

Fig. 9 is a fragmentary front elcvational view thereof.

Fig. 10 is a fragmentary front elevation al view of the back rest shown in Fig; 1 with the frame partially illustrated. V

Fig. 11 is a fragmentary plan View thereof.

Fig. 12 is a fragmentary rear perspective view of the back rest-of Fig. 10.

Fig. 13 is a fragmentary section taken on line 13*13 of Fig. 10 on an enlarged scale. 7

Fig; 14 is a fragmentary front view of the back rest shown in Fig. l on a slightly enlarged scaleand illustrating a pivotal mounting'the'refor upon the chair frame fragmentarily shown.

7 Fig. 15 is a fragmentaryplan View thereofon an enlarged scale; and

Fig; 16is a fragmentaryeectioii taken saline 16 -16 of Fig. 14 on an enlarged scale.

2,857,958 v Patented Oct. 28, 1958.

It will be understood that the above drawings illustrate merely several preferred embodiments of the invention and that other embodiments are contemplated within the scope of the claims hereafter set forth.

Referring to the drawings, the chair shown in Fig. 1 includes a pair of upright inverted U-shaped tubular elements 11 and 12 having substantially horizontal bights 13 at their upper ends, said elements including the diverging free end portions 15 and 16 which form the legs of the chair upon" each side thereof.

Tapered sleeves 17 are secured at the lower ends of the legs 15 and 16, respectively, and carry at their lower ends the universally mounted floor engaging feet 18.

Accordingly, each ofthe elements 15 and 16 of the pair of tubular elements 11 and 12 define a front and rear leg. e

As illustrated in Figs. 4, 5, 6 and 8, the two tubular elements 11 and 12 are maintained in upright position by the pair of transversely arranged parallel spaced cross braces 26 which are secured at their respective ends to interior wall portions of the said bights 13 as at points 27; Fig 6; forming a part of the tubular leg elements to thus provide a rigid supporting structure.

The chair construction also includes a unitary formed tubular back rest frame 19 of general U-shape which includes a pair of parallel spaced horizontally disposed free end portions 20 and 21 whose ends 28 are secured, respectively, to a corresponding front leg 15 as at points 29, Fig. 4.

Intermediate the ends of the back rest frame and adjacent the rear portions of the elements 2%) and 21, said frame is secured to the respective rear legs 16 of said chair upon interior surface portions thereof as at points 30 by welding. Furthermore, the front free ends of the brace elements 20 and 21 arealso secured to rear surface portions of front legs 15 such as by welding to thereby complete a unitary frame structure for the chair.

The foriiied tubular back rest frame 19 includes as an extension of elementsitland 21 the upwardly and rear wardi extending converging frame elements 23 and 24 which terminatein' the arcuate bight 25" at the upper end of frame elementlil; e

As shown in Fig. 1 the freeend portions 20 and 21 of the back rest franie terminate at their rear ends in the curved portions 22" which bleiid with the converging frame elemerit's 23 and which are inclined slightly rearwardly as illustrated in Fig. 4: I I

The generallyre'ctaiigiilar slightly contour formed chair seat 31 has rounded corners as at 32 and at its forward end has a downwardly curved depending lip formation 33; The rear portion of seat 31 is curved slightly upwardly as at 34,- Fig. 4. H The seat structure 31 includes the upright side wall portions 35, Fig. 1, which terminate in the inwardly and downwardly tapered side wall portion 36 to thereby provide for an attractive and useful edging for the seat.

A series of fasteners such as rivets 37 extend through the seat 31 and retainingly engage the horizontal bight portions 13 which "forrn parts of the let defining tubular elements 11 and 12 as at points 38, Fig;

There is provi'cl'ed a formed'back rest 39 which is arrang'ed transversely and forwardly oftheback rest frame 19 and at its upper end, and suitably secured thereto either by a rigidconnectio'n as showii in Fig. 12 or by a hinged connection as shown in Fig. 16,. hereafter "cle v The saidba'ck rest ihiiides a'hbrizontally concave back ingplate Saidbacking plate registers with the outer free ends of'asries of spam horizontally disposed posts 41 which are secured to-aiid project forwardly of the u per end'of back rest frame 19% them'anner illustrated in Figs. 10, 11, 12 and 13. The posts 41 are hollow and are adapted to cooperatively and retainingly receive the fasteners 42 which project through backing plate 40 and extend rearwardly thereof.

The back rest 39 also includes a molded and formed back rest element 43 which is also horizontally concave as shown at 44, Fig. 11, and which is preferably formed of a plastic substance, for illustration. The upper portions of back rest element 43 are gradually curved rearwardly as at 45 as shown in Figs. 12 and 13, said curved portion extending substantially throughout the upper edge of said back rest element. The lower longitudinal edge portion of said back rest element is also slightly rearwardly curvedas at 45 to thereby complete the formation of the back rest element. In this connection, it is noted also that intermediate side portions of the said back rest element are rearwardly curved as at 43', Fig. 11.

The backing plate 40 has a continuous forwardly projecting peripheral flange 44' which is adapted to cooperatively register with the rear surface of back rest element 43 thereby spacing said back rest element forwardly of the body of said backing plate.

The back rest element 43 is immovably secured to backing plate 40 by a series of rivets 46 or equivalent fastening device to thereby complete the back rest construction shown in Figs. through 13. s

A slightly difierent form of back rest is designated at 47 in Figs. 14, and 16, which back rest includes the horizontally concave backing plate 48 and which has a forwardly projected peripheral flange 49 as illustrated in Figs. 14 and 15.

This backing plate is hingedly mounted by a horizontally disposed hinge construction in connection with the upper end portion of back rest frame 19'. This hinge construction includes the elongated plate 50 which is arranged forwardly of backing plate 48, said plate being bifurcated with its pair of parallel spaced rearwardly directed elements 51 projecting through upright slots formed in backing plate 48, the ends of members 51 being curved as shown in Fig. 16.

This mounting bracket 50-51 is pivotally mounted upon the forwardly extending horizontally disposed posts.

53 which are secured to front portions of back rest frame 19 as at points 54. The hinge elements 51 are swivelly connected to the said posts 53 by the rivets 52 or equivalent hinge mounting to thereby provide for a pivotal mounting upon a horizontal axis of backing plate 48.

There is formed within the upper portion of backing plate 48 a slightly convex rearwardly extending projection 55 which is centrally apertured and which retainingly receives therein the formed rubber or resilient bumper 56. Said bumper projects rearwardly of backing plate 48 and is adapted on pivotal movement thereof to cooperatively engage a portion of the back rest frame 19' as best illustrated in Fig. 16 to thereby provide a positive and resilient stop for the back rest.

The present back rest 47 also includes a molded and formed back rest element 57, preferably of a plastic material, which is of substantially the same construction as the back rest element 43, above described, in conjunction with Figs. 10 through 13.

The present back rest element 57 is also horizontally concave as generally designated at 58 and the upright side wall portions thereof are rearwardly curved as at 59 as shown in Fig. 15. The top horizontal edge portion of back rest element 57 is rearwardly curved as at 60, the lower horizontal edge portion being rearwardly curved as at 61.

The back rest element 57 is suitably secured to backing plate 48 by a series of fasteners such as rivets 62 to thereby complete the hinged or swivelly mounted back rest construction 47 illustrated in Figs. 14, 15 and 16.

In this connection, it is noted that the upper arcuate bight portion for the back rest frame 19 is designated by the numeral 25' and corresponds to the bight 25 of back rest frame 19 shown in Fig. 12.

A slight variation of the present invention is shown in Fig. 2 wherein there is provided a chair construction exactly the same as above described in connection with Fig. 1.

There has been provided in conjunction with such chair an additional element, namely, a tablet arm generally indicated at 63 and which includes the formed tablet 64 having the continuous upright side wall portion 65 which extends throughout its periphery, and which terminates in the inwardly converging horizontally disposed peripheral wall portion 66 to thereby complete the tablet arm.

The present tablet arm is horizontally disposed and arranged upon one side of the chair of Fig. 2 partially overlapping its seat 31. The formed bracket generally indicated at 67 is of a tubular construction, hereafter described, and provides a simplified yet very effective means for rigidly supporting the tablet arm with respect to the general chair construction.

Referring to Figs. 7, 8 and 9, the said tablet arm support 67 includes a pair of substantially upright downwardly converging tubular elements 73 and 79 whose lower ends are inwardly curved as at 68 and are adapted to extend under the chair seat 31 and be secured to a portion of the seat frame in the manner hereafter described. The upper ends of the tubular frame elements 73 and 79 terminate in a horizontally disposed support element which is substantially semi-circular in shape as indicated at 69 and which supportably bears against central under surface portions of tablet arm 64 and is secured thereto by a series of fasteners similar to fasteners 82 shown in Fi 8.

eferring to Fig. 7, the upper portion of the tubular and curved tablet arm support element 69 upon one side thereof terminates in the horizontally curved portion 70. This tubular portion terminates in the rearwardly extending substantially horizontally disposed tubular element 71 which at point 72 curves downwardly, as best illustrated in Fig. 8, and joins the upright tubular element 73.

The opposite side of the tablet arm support element 69 terminates in the inwardly curved horizontally disposed tubular element 78 which in turn terminates in the substantially upright tubular element 79 of Fig. 8.

Tubular element 73 is curved inwardly as at 68 and terminates in the free ended horizontally disposed transversely arranged tubular portion 74 whose free end is indicated at 75 and which tubular element 74 is secured to the corresponding cross brace 26 as by the rivets 76 or equivalent fasteners.

The other upright tubular portion 79 is also inwardly curved and terminates in the horizontally disposed tubular element 80 whose free end is designated at 81. This tubular element is secured to the corresponding cross brace 26 by a series of additional fasteners such as the rivets 77 shown in Figs. 8 and 9.

By this construction there is provided a unitary formed tablet arm support 67 which provides a substantially rigid mounting for tablet arm 64 which is secured thereto as by fasteners such as the rivets 82 of Fig. 8.

Fig. 3 fragmentarily illustrates a slightly different form of tablet arm construction than that shown in Fig. 2 to thereby provide what might be called a desk chair construction. actly the same as above described in connection with Fig. 1.

In conjunction with Fig. 3 there is merely provided a larger tablet arm 83 which more substantially overlaps the chair seat 31 and therefore provides a slightly larger tubular mounting frame 67', which is substantially the. same as frame 67 above described in connection with However, the chair construction itself is exwhich is horizontally disposed in the manner shown in Fig. 3.

The only difference in the tubular frame mounting 67' is best illustrated in Fig. 7 and wherein, in view of the increased lateral extent of the tablet 84, the horizontally disposed support is extended laterally as indicated at the dotted lines so as to include the semi-circularly shaped support element 69', which terminates in the horizontally disposed laterally extending tubular elements 85', Figs. 7 and 9. The elongated tubular elements 85' terminate in the horizontally disposed tubular elements 85, which are exactly the same in construction as element 85 of Fig. 7 which forms a part of the solid line indication of the horizontal support 69. The remainder of the construction is exactly the same as above described in conjunction with Figs. 8 and 9, and the method of securing the lower portions of the tablet support are exactly the same as above described in conjunction with the mounting of tablet arm 64 with mounting 67.

As the general overall construction of the enlarged tablet arm 83 and its slightly enlarged tubular support 67' is substantially the same structurally as the tablet arm 63 and the support 67 of Fig. 2, it is believed that further description thereof may be omitted.

Having described my invention, reference should now be had to the claim which follows for determining the scope thereof.

I claim:

In a chair including a formed backrest frame of tubular stock extended upwardly and rearwardly of the legs thereof, the upper end portions of said frame converging upwardly and terminating in an inverted U-shaped top, a pair of parallel spaced transversely apertured bosses joined to said upper end portions and extending forwardly thereof, a horizontally concave backing plate having a pair of spaced centrally arranged apertures therethrough, a molded and formed backrest element overlapping said plate in engaging relation, said backing plate having a continuous peripheral flange engaging the rear surface of said backrest element for spacing the backrest element forwardly of the backing plate, fasteners interconnecting said backing plate and said backrest element, a hinge interconnecting a center portion of said plate with the frame, and a rubber bumper mounted upon and projecting rearwardly of said backing plate above the hinge normally spaced from the frame and adapted for cooperative engagement with the top thereof, said hinge in cluding a U-shaped rearwardly extending bifurcated bracket with the ends thereof projected through the apertures in said backing plate, being transversely apertured and in registry with said bosses and their apertures, and rivets pivotally connecting said bracket and bosses.

References Cited in the file of this patent UNITED STATES PATENTS D. 133,550 Meyers Aug. 25, 1942 D. 149,980 Spence June 15, 1948 D. 170,303 Chapman et al Sept. 1, 1953 D. 177,295 Wright Mar. 27, 1956 1,437,630 Zimmerli Dec. 5, 1922 2,054,557 Cramer et a1. Sept. 15, 1936 2,114,920 Gabb Apr. 19, 1938 2,134,639 McGowan Oct. 25, 1938 2,241,115 Burke May 6, 1941 2,491,154 Blazey Dec. 13, 1949 2,524,624 Cramer et al Oct. 3, 1950 2,577,089 Mondy Dec. 4, 1951 2,649,136 Eames Aug. 18, 1953 2,676,646 Brashear Apr. 27, 1954 2,706,518 Fleischer Apr. 19, 1955 2,711,787 Hallowell et a1. June 28, 1955 2,786,515 Clarin Mar. 26, 1957

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