US1756551A - Chair - Google Patents

Description

April 29, 1930. HAYES 1,756,551

CHAIR Filed Feb. 2, 1928 2 Sheets-Sheet 1 7770211 as E. Hag ed,

April 29, 1930.

T. R. HAYES CHAIR Filed Feb. 2, 1928 2 sheets-sheep 2 I nvmitozp [Zomas i1. Hay

Patented Apr. 29, 1930 UNITED STATES 'rnouas n. HAYES, or mounovra, camroanm GHAIB Application filed February 2, 1928. Serial No. 251,285.

My invention relates particularly to collapsible or folding chairs of the class in which the seat is composed of flexible material such as a woven fabric, and is especially directed to the means whereby the seat may be adj ustably connected with its supporting members.

The principal objects of my invention are to provide a folding chair with seat supporting means so constructed and arranged as to ten to relieve the seat from the usual tensile strains incident, in chairs ofthis type, to the spreading action of the chair frame.

Other objects of my invention are to provide a folding chair with clamping means so associated with a locking element as to posi-= tively determine the relative height of the chair seat with respect to the floor upon which the chair rests, as well as the maximum width between the extended side frames.

My invention oomprehends such an arrangement of the clamping means as to insure that the chair seat supports and locking elements will be maintained relatively parallel and normal to the legs of the chair frame structure, irrespective of any stretching of the fabric or material of which the chair seat may be formed.

My invention further includes anovel arrangement of back-rest support which permits both a rocking adjustment of the backrest upon a horizontal axis and an adjustment vertically u on the upwardly extended rear legs of the c air. The form of back-rest support as shown comprises a slider which referably embraces the upwardly extended chair leg, and to which the back-rest frame may be pivoted if desired, said slider bein limited by suitablyprovided stops disposed on said chair leg extensions Obviously, my invention is equally applicable to chair frame members that approach and separate laterally toward and from each other and those that fold forward and back with respect to the chair.

'The form of my invention as hereinafter described, comp with legs upon each of which a rider plate is arra slide, being provided with opdisfipleed flanges extending, along its g i' tical w and parallel wi the leg comprises t leg stile 3 and the back leg rises a chair frame provided upon which it. slides, and oppositely disposed fianges extending along its horizontal edges and terminating short of said leg toform a pocket, the rider plates of the legs of the respective frame members-being connected by a seat supporting rail rigidly secured in said pocket, and a locking bar floatingly engaged in said pocket and retained by said flanges, arranged to effect jamming of the outerfiange against the chair leg.-

My invention also includes all of the various novel features of construction and arrange-.

ment as hereinafter more definitely specified.

In the accompanying drawings, Figure 1 is a perspective View of a collapsible or folding chair conveniently embodying my invention; Fig. 2 is an enlarged fragmentary perspective view showing the details of construction of the rider plate and its associated parts; Fi 3 is a perspective view of the chair shown in ig. 1, in its collapsed or folded position;

Fig. 4 is a vertical transverse sectional view of the chair extended or spread as shown in Fig. 1, looking toward the front thereof; Fig. 5 is'an enlarged fragmentary sectional view taken transversely, as shown in Fig. 4, and showing the details of the rider plate con-- nection; Fig. 6 is a perspective view of the rider plate viewed as looking into the pocket formed by the inturned flanges; and Fig. 7

.is a fragmentary plan sectional view of the back-rest and its slider by which it is supported u n the extended chair leg.

. In sai fi res, the right frame of the chair e front leg stile 1 and the back leg the left frame comprises the front stile 4, the leg stiles 1 and 2 being connected y the rungs 5 and 6 and the leg stiles 3 and 4 being connected by the rungs 7 and 8 and the arm 9.

The ri ht frame of the chair is provided with a taile leaf 10 mounted to swing on the rung 6 and provided with the cleat 12 having stile 2, and

pivoted thereto at 13 the leaf supporting bar 15, which, as best shown in Fig. 4 is provide with the slot 16 terminating in the notch 17 and is arranged .to slide on the headed stud 18 provided on the leg stile 1 and serving as a.

eeper with which the notch 17 may engage to support the table in horizontal position.

The leg stiles 1 and 2 of the right frame are embraced by the oppositely flanged rider plates 19 and 20 which are connected by the seat supporting rail 22 rigidly secured thereto by the screws 21, and accompanied by the lockm bar 23 which is rotatably associated therewlth and which is connected by the trellis bars 26 and 27 with the chair rung 7 upon which said trellis bars-are arranged to rotate.

Similarly, the leg stiles 3 and 4 of the left frame are embraced by the oppositely flanged rider plates 29 and 30, which are connected by the seat supporting rail 32 rigidly secured thereto by the screws 31, and accompanied by the locking bar 33 which is rotatably associated therewith, and which is connected by the trellis bars 36 and 37 with the chair rung 5 upon which said trellis bars are arranged to rotate. As best shown in Figs. 1 and 4, the trellis bars are pivoted together intermediate of their length as at 39.-

The seat supporting rails 22 and 32 are arranged to support the seat 40 which may be of any desired form or material, but may preferably be in the form of an endless belt or' band of flexible material through the looped ends 41 and 42 of which said rails 22 and 32 extend, as illustrated.

The back leg stiles 2 and 4 of the respective side frames of the chair are extended upwardly to support the back-rest which may preferably be formed in a manner similar to the seat and be composed of an endless band of,.flexible material 45 through the looped eil is' 46 and 47 of which the back-rest stays 48-and49 may extend as shown, said stays beilig pivoted to the leg stiles 2 and 4.

As shown in Fig. 7, the stay braced bya channel-shaped fitting 50 which is engaged therewith by the headed rivet 51,

and the intermediate web of said channelshaped fitting is pivotally engaged by the pivot 52 with the slider 53, which may preferably be composedof a strip of sheet material folded to form a rectangular tube, and having its end portions overlapped as shown and substantially conforming to the cxtension of the chair leg stile 4, upon which it is arranged to slide for vertically adjusting the back-rest, its movement being limited by the stops 54.

-As shown in Figs. 4, 5 and 6, the-rider plates are each provided with the inturned flanges 57 58, 59 and 60, the flanges 59 and 60 cooperating with the flange 58 to form a pocket to be hereinafter more specifically described.

49 is en1-;

The outer flange 57 is arranged to bear against the outer side of the'leg stiles, and the inner flange 58 is so spaced from the inner side of the leg stiles as to embrace the ends of the seat rails and locking bars which extend into the pocket formed by the cooperation of the flanges 59 and 60, the seat rails being rigidly engaged therein by the screws 21, extending through the screw-hole 61, and the locking bar floatingly retained in said pocket by the flanges 58 and 60.

Although I have shown in Figs. 1, and 3 the seat-supporting rail 22 engaged with the rider plate 19, and the seat-supporting rail 32 engaged with the rider plate 29, each by two screws 21 and 31 respectively, it is to be upderstood that in view of the engagement 0 normal flanges'58 and 59, best shown in F ig.

6, said supporting rails may be rigidly en gaged by but a single screw 21 or 31, as shown in Figs. 4 and 5, the plate being interchangeable.

said supporting rails with the relatively My invention advantageous in that by v the employment of rider plates as contemplated, the stretching of the canvas or other flexible material forming the seat effects no influence upon the working members of the chair, and the seat may be removed from the chair frames without affecting their relation. Furthermore, the weight of a person on the seat of the chair tends to draw the flange of the rider plates firmly against leg stiles, and also tends to crowd the locking bar to the opposite side of the leg stiles, thus pinching them between the two. TlllS action is efliciently effected regardless of any stretching of the seat material. The greater the weight on the seat ofthe chair, the more rigid it becomes, thereby making .it at such times as solid and firm as a permanent chair. Such construction alsopermits the free adjustment of the chair members without conflicting with the table leaf -structure.

I do not desire to limit my invention to the precise details of construction and arl'angement as herein set forth, as it is obvious that various modifications may be made therein without departing from the essential features of my invention as defined. in the appended claims;

Having'thus described my invention, I

. claim:

movable frames having leg stiles upon engage said rider plates with said leg- 2. A collapsible chair comprising relatively movable frames havin leg stiles, rider plates each havin relative y parallel flanges arranged to slida ly embrace said leg stiles and flanges relatively/normal thereto forming pockets, a locking bar floatingly en aged in said pockets and rotatably associate with said rider plates and arranged to effect frictional engagement of said rider plates with their respective leg stiles upon the spreading.

of said frames. v

3. A collapsible chair comprising relatively movable frames having leg stiles, rider plates each having flanges arrangedto slid- 1 ably embrace said leg stiles and forming pockets, a locking bar rotatably associated with said rider plates and floatin ly engaged in said pockets, arranged to e ect the engagement and release of said rider plates with their respective leg stiles, uponthe extension and approach of said frames, and seat supporting rails carried by said rider plates independent of said locking bars, but afiording an abutment therefor.

4. A collapsible chair comprising relatively movable frames each having a forward leg stile and a rearward leg stile, a rider plate having opposite relatively parallel flanges arranged to slidably embrace each of said leg stiles, a locking barfloatingly engaged with opposed rider plates and extended between, one of the flanges of said rider plates and the leg stile, and means connecting said locking bar with the opposed relatively movable frame arranged to effect the rotation of said locking bar whereby the relative separation of said frames eflects movement of said looking bar to frictionally-engage said rider with its leg stile, and therelative approach of said 40 frame effects a release of said frictional engagement.

5. A collapsible chair comprising relatively movable frames each having leg stiles, rider plates comprising gockets and having flanges arranged to slida ly engage said leg stiles of one of said frames, a locking bar floatingly engaged in said pockets, between opposite leg stiles and the opposed wall of said pockets, said locking-bar being connected with the other of said frames to effect itsrotation when said frames are relatively moved, whereby the extension of said frames cfl'ects frictional engagement of said rider plates with their respective leg stiles, and the approach of said frames effects release of said frictional engagement.

In witness whereof, I have hereunto set my hand this twentieth day of January,

A. D. 1928. THOMAS R. HAYES.

Images