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Publication numberUS2260735 A
Publication typeGrant
Publication dateOct 28, 1941
Filing dateFeb 1, 1939
Priority dateFeb 1, 1939
Publication numberUS 2260735 A, US 2260735A, US-A-2260735, US2260735 A, US2260735A
InventorsBenjamin Clarence F
Original AssigneeBenjamin Clarence F
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Folding chair
US 2260735 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

c. F. BENJAMgN FOLDING CHAIR Filed Feb. l, 1959 INVENTOR ATTO R N EYSP Oct. 28, 1941.

Patented Oct. 28, 1941 UNITEDk STATES LPATENT; QOFFICE y n .2,260,735l

FOLDING CHAIR Clarence F. Benjamin; Devon, Conn; 1 Application February 1, 193i), SerialNo. 253,975 f Y 9 claims. (ol. 155-4117) This invention relates to new anduseful improvements in folding chairs, and has particular relation to the porch, beach or lawn type of folding chain Aniobject of the invention is to provide a chair of the` type indicated whichis readily adjustable to the comfort of the user while the latter remains seated in the chair. I

,Anotherv object is to provide a chair of .the` character mentioned whichis easy to get into and out of, and which provides la Acomfortable seat portiontogether with leg rests which while constantly available for use do not interfere with a user entering or leaving the chair, andy which are so kconstructed and arranged thattheymay or may not vbe usedV as desired without theuser being required, to rise from the chair to change from use of the vchair without using these rests, orto employ these rests as desired.

A further object is to provide a folding-chair of light weight and sturdy construction.' including a'minimum of parts, and which may be readily and quickly-opened for use and folded to occupy a minimum of space for storage or transportation. Y y

,Other objects and advantages will becomey apparent from a consideration of the following'-detailed; description taken in connectionl with the accompanying drawing wherein satisfactory embodiments o f the invention are shown. However,I

it isk to be understood-that the invention .isfnot limitedto the details disclosed butlincludes all such vvariations and modifications y as fall within the scope of' the invention. r ..1

Inthe drawing: y I i Fig. lis aside elevational view of ythe chainof the invention open foruse; f) "Fig, 2 is a top plan View ofthe chairas shown;

in iFig. 1 butwitha portion of thecanvas seat omitted i jFig. 3 .is a AsideY elevational lview showinggthe as along the line 'I--T of Fig. 6; f

Fig. 8 is an elevational View taken as looking from the left in Fig. 6; y

Fig.,9'is a view similar to Fig. 1 but on-a smallv 'erscale and showing a modification; j; Y,

Fig. 10Ais a detail plan .view showing a portion ofthe chair of,.1g.9;

Fig.v 11 is' a detail View of a portion ofthe con# struction of Figs. v9 and l0; and 'l ig. 12 is a View looking from the right of Fig.

f Referringin detail to the'dr'awing and yat rst i ber I3"ekten' ding between and connected with such legs inY a manner lto be described. Leg frameLBcomprisesa pair'of'legs I 4 and I5 each provided with a longitudinally extending slot I5 and with areenforcement yI'I beyond the lower end of such slot vto preevntsplitting of the leg.

,The front andrear leg'frames A and B incline toward onefanother', and the upper ends of the legs I I andf'IZ are pivotally connected Withthe upper ends A,of the legs I4 vand I5 respectively by any suitable' means such 'for example as a nut and bolt I8. .Thus it will be seen that the'leg frames are connected for relative folding move- Back` frame v C` comprises sidev framel members I9 and l20 havingpivotal connection. at their lowerends on a `connecting means orbarf 2| eX- tending transversely of the chair. The upper ends kof the ',members AI9 and 20 are'connected by a braoe"A piece 22 extending between and throughfthe members.'y Strengthening blocks r23 areshown secured against the inner-sides of the upper end.,I C'yrticins' of the lmembers vI`9'rand 20 as by nut and bolt vmeans 2 4and extendA along these members" a sufficient distancev to givea long enoughf bearing'to secure the properbracing effect. kIf preferred these blocks may be located on the outersides-of members I9 land 20. In this case the bar=22 is madefsui'liciently longer to extend through theseblocks With these blocks on the outersides ofv thesid'e members more space is provided for mounting a shade on the bar 22 if one is` desiredaltis noted that the end p0rtionsofthe members" I9 and 2D are split asat 25 andthe outer-'ends of the split portions connected by nutland bolt means 26 so they can'be elongatedmembers `2I and28 the inner end of l each of Whichis securedto the connecting means tails of such connection are shown in Figs. 4 and 5. In their upper faces toward their inner ends the members 21 and 28 are provided with transversely extending grooves 30 to receive the under half of the bar 2|. Disposed over the received portions of such bar are blocks 3| having grooves 32 in their under sides to receive the upper portions of the said bar. Bolts 33 pass through the` members 21 and 28 at each side of the groove 30 therein and through the blocks 3|, and on tight? ening of the nuts 34 on said bolts the blocks ,will be drawn against the bar 2| and securely clamp it against turning movement relative to the members 21 and 28.

The members 21 and 28 pass over the brace I3 adjacent the ends of the latter'and .hinges 35 are secured to the under sides of the said members and to the brace. Thus the members are connected with the brace but may have folding movements relative thereto.

Extensions of the means 2|, which extensionsA may be for example in the form of lag screws 36, pass through the slots I6 in the legs of the frame B, and while theend portions of the means might be passed through the slots lag screws may be used since they may be of relatively small diameter whereby the slots may be kept narrow. The lag screws are movable along the slots whereby the back may be adjusted, and also to permit of the folding of the chair as will appear. i

An underseat 31 in the form of a piece of canvas or other exible material is secured at its forward end to thebrace I3 as by tacks or the like, v

the chair as by the buckles 43 secured to the legs of the frame A. The straps may be adjusted through the buckles to adjust the angle of inclination of the back frame C, and such adjustments may be made while the person making the adjustment is seated in the chair.

The two seats or the double seat provided by the invention adds materially to the comfort of the chairsince with this construction the seat is straighter and maintained in a more natural and comfortable position and does not sag as it would with a single seat. The foot rests 29 being spaced apart a woman may walk between them to sit in the chair without the foot rests interfering with her skirt. A person using the chair does not need to use the foot rests and the latter are not in the way while the chair is in use with the feet resting on the floor or while a person is entering ner. The said underseat may be kept to any desired degree of tautness by adjustment of the means 2|. Thus to adjust the under seat the means 2| is released by backing off the nuts 34 and thereafter the bar is turned about its longitudinal axis to wrap a portion of the material of the seat about or unwrap it from the bar an'd then the nuts 34 are again tightened to hold the bar against turning movement.

The chair includes a seat and back formed by a length of canvas or other flexible material 38 secured at its forward end to the brace `i3 and extending over the underseat 31 and upwardly of the back frame C. The other or upper end of the material 38 is secured to the cross piece or bar 22 in any suitable manner. Thus the material 38 providesthechair with a seat portion 39 and a back portion 40. tightened by loosening the nuts of the nut and bolt means 26 then turning the piece 22 vabout its longitudinal axis to wind any desired portion of the material 38 thereon. It may be loosened by turning., in the opposite direction to unwind it from the bar. Thereafter the nuts on means 26 are tightened to hold the cross piece 22 'against turning, movement relative to the frame C.

Leather, canvas orother flexible straps 4| provide armrests at the respective sides of the chair. The inner ends ofthese straps are secured to the intermediate portions of themembers I9 and 20 of the frame C as by means of the clevis 42 and the outer or forward ends of the straps are adjustably secured to thesupporting structure of This seat and back'may'bev or leaving the chair. The feet and legs may be moved from the rests tothe floor or vice versa to change position without the user being required to leave the chair to fold or adjust the rests.

Figs. 6, 7 and 8 show the details ofthe connectionbetween the brace I3 and the front legs II and I2 of the chair. In such gures it will be noted that the ends of the brace are reduced providing tongues 44 entering recesses in the inner sides of the legs whereby the brace and legs are mortised together. In addition bolts 45 are passed through the `legs from the outer sides thereof'and enter the end portions of the brace. Inwardly of'its ends the brace is provided with openings 46 permitting of the mounting of nuts 41 on the inner ends of the bolts. On tightening of the nuts41 the legs II and I2 and the brace I3 are'drawn tightly together providing aV very rigid structure.

The angle of inclination of the foot rests 29 and back C may be'changed by adjusting the relative angle of legs II and I4 by moving the bar 2| and members 36 to different positions along the slots I6. After adjustment the weight of the user and engagement of the lower ends of the legs on the floor or ground will retain theml in adjusted positions.I These adjustments can be made while the user is sitting in the chair. One can do'this by moving his body forward reaching rearwardly with the hands and pulling the rear legs I4 forward thus causing the rod 2| to slide down in slots I6 and raising the leg rests 29.

Figs. 9 and 10 show a slightly modified construction wherein the chair is generally designated 50 and includes a front leg frame A', a back frame C and a foot rest frame D all of the construction of the frames A, C and D previously described. The rear'leg frame B of the chair 5I) includes a brace 5I extending between and connecting the rear legs 52 and 53 which it is noted are not slotted as are lthe legs I4 and I5 ofthe form iirst described. The brace'5l is connected to the legs 52 and 53 inthe manner shown in Figs. 6, '1 and 8.

A'connecting means or bar 54 extends transversely of the chair 50 and replaces the connecting means 2| of the chair I0. The rear end of the foot rest frame D is connected to the means 54- through the clamping means including the blocks 3| and the bolts 33'and nuts 34 while the lower end of the back frame C is pivotally connectedwith the said means.` Means 54 is of such length as to project beyond the sides of the legs 52 and 53 and in fact when the chair is set up for use has its end portions 58 resting on the upper side of such legsl as shown. These end portions may be formed with a groovev .to re'- ceivea split spring ring 60 so it projects beyond theV 'surfaceof bar 54 just outsidethe wside members I9 as shown v.in Figs. 10, 11 and '12 to hold themfrom Vsliding ofi the ends of the bar. f

Theends of the brace 5I are .mortised into the legs 52 and 53 and the legs and brace areclamped together by the nut andboltjmeans 55fand456. 'From Fig; 10 it will be clear that the .bolts 55 pass through the legs from the outer sides there,- of and that the brace 5I is provided adjacent its ends with openings 51 whereby the nuts-may be applied to the bolts after which on tightening of the nuts on the bolts the brace andl legs are drawn tightly together providing a rigid'strucl ture. Thus it will be seen with the exceptions of the use of the brace 5I and the extension of the connecting means 54 and the disposing ofthe same on the upperedges of the legs 52 and 53 the construction of the chair of Figs. 9 and l0 is the'sameas that of Figs. 1 through 8.

The angle of inclination of the leg rests and back in this chair can also be adjusted asin the rst form by moving the end portions 58 of bar 54 to different positions along the top of the legs 52. The weight of the user and engagement of the vends of the legs on the iioor or ground retains them in adjusted positions. These adjustments can be made While the user is sitting in the chair. v Y

The chairs fold much alike. In folding chair I the leg frames A and B are swungY toward one another about the pivoting means I8 and the connecting meansZI moves'downwardly, being guided by the slots I6. During this time the frame D is rocking on its hinges 35 and its inner end together with the lower end of the back frame C is moving with the 'connectingmeans 2|. Thus the leg framesy fold one partl'ywithin the other whilethe back frame C folds partly into the rear leg frame and the foot restmemibers are partly Within the leg `frames, but being of greater length 'projects beyond their forward ends.

In folding chair 5I) the action is about the same except that movement of the connecting means 54 is not controlled by slots. The flexible materials lformingv the double'seat and back inthe disclosed constructions will not interfere with the yfolding ofthe chairs, and the same is true with respect to the iiexible straps 4I comprising arm rests and means for adjusting theV relation between the seat and back. v

The chairs disclosed are fully braced laterally since the chair Ill has cross braces I3,v 2| and 22 while the chair 5i! has thecross braces I3 and 22, and further has the brace 5I. The chairs are easily folded and'unfolded'are rigid and Willwithstand hard usage, are veasy to enter an'dto leave, and the backand seatmay be adjusted to the convenience of the userl while the latter is seated in the chair. Such adjustment takes place by tightening or loosening of the strap-like arm rests 4I. Also, the inclination of the foot rests may be Varied as described.

Having thus set forth the nature of my invention, wh-at I claim is:

1. In a folding chair, front and rear leg frames each comprising a pair of leg members, said frames inclining toward one another, means pivotally connecting the upper ends of the rear leg members to the upper ends of the front leg members, a rigid brace connecting said front leg members intermediate their ends, foot rest members and a back frame, means comprising a rear cross bracepivotally connecting thelower end of the back rest `frame with the rear'ends of the foot `rest members and supported on said rear. leg members, a flexible underseat connected at its respective lends with the last mentioned means and said rigid brace, meanshingedly connecting intermediate portions of the foot rest members with said rigid brace, an'upper brace connecting the upper portions of the back rest frame members, a flexible seat and back means located over vthe underseat and connected at its respective ends to said rigid and upper braces, said rear brace being rotatable relative tosaid footrest members to adjust the length ofthe underseat, means for 'clamping the rear brace in adjusted position, and side arm portions connecting the back frame with said pivotally connected leg frames. v

2. In a folding chair, a supporting structure comprising pivotally connected yfront and rrear legs, a rigid 'brace extending between and connected with said front legs, foot rest members, a back frame, means comprising a rear cross brace pivotally connecting'the rear ends of the foot rest members With the lower end `of the back frame and movably supported onsaid rear legs, said foot rest members projecting forwardly and having'their intermediate portions resting on and hinged to said rigid brace, adjustable arm rests connected With said back framev and said'supporting structure, and a seat and back for'said chair comprising a vflexible member connected at its respective ends with said rigid brace and said back frame, -a flexible underseat connecting the rigid and rear braces, said rear brace being rotatable relative to the foot rest members'to adjust the length ofy the underseat, and means for lclamping-this brace in Aadjusted positions. f

3. In `afvfolding chair, a supporting structure comprising front and rear legs inclined in opposite directions and pivotally connected at their upper ends, a rigidbrace extending between said front legs, said bracecomprising a member having end *portions of' considerably greater width than thickness, means rigidly connecting thej ends .of said brace to the front legs and with the width of the brace extending longitudinally along said legs, foot rest members, a back frame, means pivotally connecting the rear ends of the 'foot rest members with the lower end of the back .frame and supported on saidrear legs, said`foot rest members projecting forwardly and vhaving their intermediate portions resting on and hinged to said rigid brace, -adjustable eXible arm rests connected with said back frame and said 4supporting structure adjacent the pivotal connection lbetween the legs, a seat and'backy for said chair comprising a flexible'member connected vat its p respective ends with said brace and saidv back frame, and said foot rest members beyond said rigid brace comprising a pair of spaced members .between which a user may enter to sit in the chair.

4. In a folding chair, a supporting structure comprising pivotally connected front and rear legs, a rigid brace extending between and connected with saidfront legs, foot rest members, a back frame, means pivotally connecting the rear ends of the foot rest members with the lower end of the back frame and vmovably supported on said rear legs, said foot rest members projecting forwardly and having their intermediate portions hinged to said rigid brace, adjustable means connecting the back frame with said supporting structure, a seat and back for said chair comprising a flexible member connected at its respectiveends'with said brace and said back frame', a flexible underseat connected at its forward end with said brace and at its rear end with said means connecting the back and foot rest members, said ylast mentioned means being turnable relative to said members to adjust the tension of the material of said underseat, and means for securing said connecting means against casual turning movement.

5. In a folding chair, a supporting structure comprising pivotally connected front and rear legs, a rigid brace extending between and connected with said front legs, foot rest members, a back frame, means pivotally connecting the rear ends of the foot rest members with the lower end of the back frame and movably supported on said rear legs, said foot rest members projecting forwardly and having their intermediate portions hinged to said brace, adjustable arm rest means connecting the back frame with said supporting structure, a seat and back for such chair comprising a flexible member connected at its respective ends with said brace and said back frame, a flexible underseat connected at its forward end with said brace and at its rear end with said means connecting the back and foot rest members, said last mentioned means being turnable relative to said members to adjust the tension of the material of said underseat, and means on at least one of said foot rest members and embracing said connecting means and adjustable to tightly clamp the same to secure it in an adjusted position 6. In a folding chair, a supporting structure including oppositely inclined front and rear legs, means pivotally connecting said front and rear legs at their upper ends for relative folding movements, a back frame resting at its lower end on said rear legs and including a lower cross member, a rigid brace connecting said front legs, a seat and back connected at its respective ends with said brace and said back frame, side members hinged to the brace and pivotally connected to the lower end of the back frame, flexible strap and buckle means at each side of said chair and connecting an intermediate portion of the back frame with said supporting structure for adjustment of the back frame relative to such structure, and a flexible under-seat connected at its forward end with said brace and at its rear end with said cross member, and said cross member being turnable relative to the side members to adjust the tension of the material of said underseat.

7. In a folding chair, a supporting structure including front and rear legs, means connecting said front and rear legs for relative folding movements, a back frame resting at its lower end on said rear legs, a brace connecting said front legs, side members hinged to the brace and pivotally connected to the lower end of the back frame,

said back frame comprising side members and a vconnecting piece extending between said side lmembers adjacent each of their ends, a flexible seat and back Iconnected at itsvrespective ends with said brace and said connecting piece at the outer end of the frame, said connecting piece being turnable relative to the remainder of the back frame to adjust the length of said flexible seat and back, means to secure said connecting piece against turning movement after adjustment, and a flexible under-seat connected at its forward end with said brace and at its rear end with the connecting piece at the lower end of the frame, said latter connecting piece being turnable to adjust the tension of the material of said under-seat.

8. In a folding chair, a supporting structure comprising front and rear legs and means connecting said legs for relative folding movements, a rigid brace means extending between said front legs, said brace comprising a member having end portions of considerably greater width than thickness, means rigidly connecting the ends of said brace to the front legs and with the width of the brace extending longitudinally along said legs, foot rest members, a back frame, means pivotally connecting the rear end of said foot rest members with the lower end of the back frame and supported on said rear legs, said foot rest members projecting forwardly and having their intermediate portions resting on said rigid brace, means hinging said intermediate portion to said brace, adjustable arm rest means connected with said back frame and said supporting structure, and a seat and back for said chair comprising a flexible member connected at its respective ends with said brace and said back frame.

9. In a folding chair, a supporting structure comprising front and rear legs inclining toward one another and pivotally connected at their upper ends, a rigid brace means extending between said front legs, said brace comprising a member having end portions of considerably greater width than thickness, means rigidly connecting the ends of said brace to the front legs and with the width of the brace extending longitudinally along said legs, a similar rigid brace extending between and connecting said rear legs, foot rest members, a back frame, means connecting the rear end of foot rest members with the lower end of said back frame and resting on the upper edges of said inclined rear legs, said foot rest members projecting forwardly and having their intermediate portions hinged to said first named rigid brace, flexible arm rests connecting the back frame and the upper ends of the legs, and a seat and back comprising a flexible member connected at its respective ends with said brace connecting said CLARENCE F. BENJAMIN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2618317 *Nov 1, 1949Nov 18, 1952Telescope Folding Furniture CoFolding chair
US5244250 *Jan 31, 1992Sep 14, 1993Nordmeyer Robert APortable fold-up sports chair
Classifications
U.S. Classification297/28, 297/423.19, 297/359
International ClassificationA47C4/40, A47C4/00
Cooperative ClassificationA47C4/40
European ClassificationA47C4/40