US2381718A - Chair - Google Patents

Description

Patented Aug. 7, 1945' CHAIR Earl C. Booth, Columbus, Ind., assigner to Noblitti, Sparks Industries, Inc., Columbus, Ind., a corporation of Indiana Application June 5, 1943, Serial No. 489,732

2 Claims.

AMy invention relates to metal chairsand has for its object the production of a metal chair which can be simply and economically manufactured,- which can be knocked down and shipped in a compact package, and which 'can easily be erected.

In carrying out my invention I form the seat and back of the chair as a single sheet-metal stamping, desirably weakened by a transverse row of perforations at `the junction of the seat-portion and back-portion and provided around its periphery with a stiening flange which is interrupted at such line of perforations to permit relative swinging movement of the seat-portion and back-portion. To support the back and seat, and to hold them in the desired angular relationship when the chair is erected, I employ two side members, desirably of metal tubing, which are bent into a general U-shaped form to provide a horizontal base leg adapted to rest on the ground, oor, or other supporting surface, a vertically extending intermediate portion which is secured to the seat at a front corner thereof, and an armforming portion which extends rearwardly above the seat and is secured to the chair-back.

The accompanying drawing illustrates my invention: Fig. 1 is a side elevation of an erected chair; Figs. 2 and 3 are plan and side elevations respectively of the unitary seat and back of the chair; and Fig. 4 is a side elevation showing the seat and back collapsed for packaging.

The single stamping of which the seat and back of the chair is formed is illustrated in Figs. 2 and 3. It includes a seat portion I0 and a back portion II separated from each other by a transverse line of perforations I2. Surrounding the stamping is a peripheral stiiening ange I3 interrupted on each side of the stamping at the line of perforations, as indicated at I4. Near the front corners of the seat portion I0, the stamping is formed with generally semi-circular indentations I6, and similar indentations I'I are provided at a point intermediate the length of the back portion II- The precise form given the seat portion and the back portion is a matter of design and may vary considerably.

In addition to the stamping III--I I, the chair includes a pair of side members 2U each of which is desirably formed of metal tubing bent` into the general form of a U to provide a base leg 2|, a vertical leg 22, and an upper leg 23. The vertical leg 22 of each of the side members 20 is received in one of the indentations I6 at a front corner of the seat, while the rear end of the upper leg 23 is received and secured in one of shown in the drawing, the attachment of each vertical leg 22 to the seat I0 is effected through the medium of U bolts 25 which surround the leg 22 and pass through the flange I3. The rear end of each upper leg 23 is secured in its associated indentation I'I by means of a bolt 26 which extends through such upper leg .and through the flange I3. Desirably, the chair includes a stretcher 21 which extends between and is secured to the base legs 2| of the two side members 20. I

The stamping constituting the back and seat of the chair is formed as a single stamping, and is painted or otherwise nished in any desired manner. Prior to shipment, the back portion II may be folded over the seat portion lIIJ about the line of perforations I2, as indicated in Fig. 4, thus reducing materially the size of the package needed to contain the chair-parts. When the chair is to be erected, the back portion II is swung about the line of perforations I2 to a position approximately perpendicular with the seat portion IIJ, .and the side members 20 are then applied( The interruption of the ilange I3 at the line of perforations I2 permits the relative swinging movement of the seat portion and back portion.

The line of perforations I2 has a double function. In the rst place, such periorations facilitate bending of the stamping IIJ- II both into and out of the collapsed condition illustrated in Fig. 4. In the second place, in the completed chair, such perforations provide for the drainage of any water that might otherwise collect in the chair at the junction of the seat and back.

I claim as my invention:

1. In a chair, a single sheet-metal' stamping having a seat-portion and a back-portion, said stamping being provided with a transverse row of perforations at the junction of the seat-portion and back-portion and with a peripheral 'flange interrupted at the ends of said row of perforations to permit relative angular movement of the two stamping-portions about such line of perforations, and a pair of side members disposed at the sides of and supporting said stamping, eachof said side members comprising a continuous tube bent into a general U-shape to provide a horizontal base leg, .a vertical leg, and an upper leg, said vertical leg being connected to said seat portion near a front corner thereof and said upper leg being connected to said back-portion at a point above said seat-portion.

2. In a chair, a single sheet-metal stamping having a seat-portion and a back-portion, said stamping being provided with a transverse row of perforations at the junction of the seat-portion and back-portion and with a peripheral ange interrupted at the ends of said row of perforations to permit relative .angular movement of the two stamping-portions about such line of perforations, and means for holding said seat-portion and back-portion in predetermined angular relationship, said means comprising a pair of members each secured to said seat-portion and back-portion at points spaced from said line ot perforations.

EARL C. BOOTH.

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