US1994162A - Chair back - Google Patents

Description

March 12, 1935. c. c. ADELSPERGER CHAIR BACK Origin al Filed March 11, 1952 INVENT OR. 67% flea 6T Adela very:

ATTORNEY5 5 in a knocked down' condition-.=

Patented Mar. 12, 1935 units-o stares CHAIR BACK Charles C. :Adelsperger,. Union: City 31nd; assignor to Union City Body Company, Union City, Ind. a a corporation oflndiana.

Original 1 application: March-.11, 1932; Serial No.

598,231; Divided and this: applicationzApril' 2, a n 1934, Serial-Not 718-,594'

The present invention relates tic-improvements in theater chairs-and one of the objects of my invention. is- 'toprovide a chair structure organized in-such a mannerthat it may be shipped A further object of my invention is to pro vide an improvement in a chairback, primarily adapted. for association: with the above-mentioned type of knockedidown' chair, which may be cheaply and readily constructed; primarily of sheet metal, with means for securing the upholstery in position. in the back, which means not only providesfor a cheap and'efii'cient manner for securing: the upholstery in place, but also provides means whereby the upholstery maybe renewed when worn out or destroyed with a minimum of expense.

For the purpose of illustrating my invention I have illustrated anembodiment thereof i the accompanying drawing in which:

Fig; 1 is a side elevation of a frame for a back unit embodying my invention;

Fig. 2 is a central section of an back unit;

Fig. 3 is a fragmental front elevation t aback unit frame; a

Fig. 4' is a horizontal section thereof;

Fig. 5 is a longitudinal section on the line 5-5 of Fig. 6, showing in addition the back assembly; a

Fig. 6 is a fragmental plan of a seat unit showing the back-retaining means, and

Fig. 7 is an enlarged detailed view showing the means for securing the retaining bar and seat in position in the frame,

upholstered In the embodiment of the invention illustrated I provide a pair of side plates 1 adapted to be secured to suitable standards and each of these side plates is provided with an inwardly-facing socket portion 2 adapted toreceive the end of a cross bar 3, which cross bar provides means for connecting the side plates together, and a pivotal support for the tilting seat frame 4.

Each of the side plates 1 carries a back-supporting bracket 5 and each of said brackets comprises a plate secured to one of the side plates as by a rivet 6 passing through the upper end of the bracket and the plate and bolts or rivets '7 and 8 placed at spaced points on the bracket. Either the bracket plate 5 or the side plate may be formed of elongated apertures for the reception of the bolts 7 and 8 to provide for an adjustment of the angle of inclination of the back-supporting bracket.

Each bracket includes a rearwardly-extending portion- 9' terminating in a partly cylindrical portionIO as illustrated in Fi'g. 6, and it will be noted that these-partly'cylindrical portions face inwardly r A v The" back unit comprises a frame member 11 consisting of a sheetg'of: metal generally of rectangular form, and curved as illustrated; and provided with aperipherally-extending bead 12 adjacent threeof its edges; Beyond the bead portion 12 the said three edges of the sheet are formed to provide a;- continuous outwardly-opening groove- 1 3, the portion of the. sheet inwhich groove 13 is formed terminating in shoulders 14 at the bottom of the baclniand' the portion. of the bead at its'lowersend being.extended or projected'. to: form; afflange: or tongue: 1 5..

The fourth; edge of the: sheet. is: formed with a forwardlywpening. groove 16: and; adjacent eaclr. end of. the groove-the: sheet-II carries an ear? 17,;one endzportion: 18: of which is free. This can is preferably"- spot-welded. to: the sheet and ther fi'ee. end? portion: 16 may be: bent free' of the .boarch. .ispositioned ,Withmits. lower edge supportedrirr the: hook 19;. Compressible upholstering material 21, such for instance as hair or other padding, and preferably in sheet form, is supported on the cardboard sheet, a portion 22 of the material being folded over the upper edge of the cardboard and compressed between the cardboard sheet and the seat back. Likewise a portion 23 of the material may enter the cavity formed by the bead 12.

In this description and in certain of the claims appended hereto the material is referred to as fcardboard. It is to be understood, however, that any material which is relatively inexpensive, light, and which has sufficient stifiness to support the strip of upholstering material 21 during the assembly of the back is to be considered the equivalent of the cardboard.

, A resilient bar 24 is secured to three edges of a generally rectangular sheet 25 of covering material, preferably by having the edge of the sheet rolled over the bar and secured to the back of the material either by stitching or otherwise. A rod. 26 is secured to the bottom or other edge of the upholstering material, and this rod may be positioned in the groove 16. After the positioning of the rod 26 the ends 18 of the cars 17 may be bent downwardly against the rod to retain the same in rod has been assembled in the groove or recess,.

the extending lugs 15 are folded down to cover the rebent end of the rod 24.

The assembled back unit is engagedwith the seat unit by entering the lower ends ofthe bead 12 in the cylindrical portions 10 of the brackets 9 j and sliding the back unit downwardly in said portions until the hooks 30 secured onthe bead portions engage over the top edges of the cylindrical portions 10. This limits the downward movement of the back and also provides a covering for the raw edge of the curved portion 10 of the bracket. The lower edge of the bracket and bead are covered by, cap members 31 which engage over the lower edges of the curved portions 10 and the bead, as illustrated in Fig. '7, and these cap portions are provided with lugs 32 through which extend the threaded ends 29, nuts being secured on the underside of the lugs 32 for drawing the bar 24 snugly in position, and likewise holding the seat portion from'vertical displacement. j

The present application is a division'of. my oopending application Serial No. 598,231, filed March 11, 1932, for Theater chair. 7

I claim as my invention: 1

1. In a chair, a back comprising a sheet of metal of generally rectangular formation, said sheet being formed with an outwardly opening groove extending around three sides thereof, said groove terminating, at its opposite ends, in shoulders and a resilient bar positioned in said groove and provided at its opposite ends with abutments engageable with said shoulders tohold said barin place. 1

2. In a chair, a back comprising a sheet of metal of generally rectangular formation, said sheet being formed with an outwardly opening groove extending around three sides thereof, said groove terminating, at its opposite ends, in shoulders, a resilient bar positioned in said groove and provided at its opposite ends with abutments en-.

gageable with said shoulders to hold said bar in place, and a sheet of flexible covering material substantially coextensivein size with the sheet metal having a portion of its periphery secured to said bar.

3. In achair, a back comprising a sheet'of metal of. generally rectangular formation, said sheet being formed with an outwardly opening groove extending around three sides thereof, said groove terminating, atits opposite ends, in shoulders,,a resilient bar positioned in said grooveand provided at its. opposite ends'with abutmentsengageable with said shoulders to hold said bar in place, a groove formed in saidmetal sheet and extending along the fourth side thereof, a pair of spaced ears secured to said metal sheet adjacent said last-mentioned "groove, a sheet of flexible covering material of generally rectangular "fora rod receivable in said last-mentioned groove,

'20 the fourth'side of saidfflexible sheetbeingsecured r to said rod, said ears being adapted tobe bent into retaining relation with said rod to hold the same in position in said last-mentioned groove.

4. In a chair, a back comprising a sheet of metal of'generally rectangular formation, said sheet being formed withan outwardly opening thereof, a pair of spaced-ears secured to said metal sheet adjacent said last-mentioned groove, a sheet of flexible covering material of generally rectangular formation having three, sides secured to said bar and a rod receivable in said :lastmentioned groove, the fourth side of said flexible sheet being secured to said rod, said cars being adapted to be bent into retaining relation'with said rod to hold the same in position in said lastmentioned groove.

CHARLES c. ADELSPERGER.

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