US2044021A - Chair base - Google Patents

Description

' June 16, 1936. o. scHAcHTEL CHAIR BASE Filed March 9, 1935 dzwgfe Patented June 16, 1936 UNITED STATES 2,044,021 cHAm BASE Otto Schachtel, Chicago, Ill., assignor to Theo. A.

Kochs Company, Chicago, Ill., a corporation of Y Illinois Application March 9, 1935, Serial No. 10,258

10 Claims.

The chair baseof the present invention is intended primarily for use as a support for. the seat of a swivel chair, which may be a barber chair, Va dental chair, a beauty parlor chair, or any other type of swivel chair, and the base yis adapted for numerous uses in which a rm, rigid, easily assmbledwbas'e of attractive appearance and strong andhunyielding structure is desired.

I'he base of the present invention moreover is one in which the parts can be made in quantity and readily assembled, and which lends itself to Vthe requirements of modernistic design, and in which furthermore a bright metallic finish may be imparted without marring or disgurement from screws, rivet heads, or other agencies employed in the assembling of the parts.

Further objects and details of the invention will appear from the description thereof in conjunction with the accompanying drawing, wherein,-

y y'Figure 1` is a perspective view of a chair for use iii a beauty parlor, embodying the base of the presentinvention; A

Fig. 2 is an enlarged sectional detail of the center post with the legs radiating therefrom;

Fig. 3 is a perspective view looking into the upper end of one of the legs;

4 is a similar View looking into the lower end of one of the legs; and

Fig'. 5 is a perspective view of the coupling for 30 securing the legs within the center post.

The base or support comprises a center post I0 which `is provided with threads Il throughout its inedi'al region, which threads engage with the exterior threads I 2 of a standard I 3 which carries Ag5 thechair seat I4.

The Acenter post I0 is supported by a plurality of yUFShaped legs I5, each of which has its upper and i lower ends secured to the center post, and each of which is provided at 0r near the bend or loop `40 of the leg with a foot I6 which rests upon the hoor, holding the regs with the post ih eievated relation with respect to the surface of the licor.

Each of the U-shaped legs is constructed of tubing which is attened cn the sides to airord an 45 oval'r elliptical cross section, and the upper and -55 vtlieleg extends radially outward and thereafter (Cl. 155a-138) dipsslightly downward toward the outer bendY I9,` at which point the foot I6 is secured. Y I I Each of the legs at its lower end I8 has inserte thereinto a pin 20 which lies upon the basev of the lower end of the leg and is secured thereto by a 5 spot weld 2| formed on the under side of the leg and at 'a point which will be practically indiscernable when the base is nished. e f Y The pins 20 project inwardly through apertures 22 near the lower end of the post I0, and the inner 10 ends'of the pins are enteredthrough apertures 23 in a coupling plug 24 located centrally within the post I0 near the lower end thereof. The pins are united to the center coupling plug by spot welds The upper end I1 of each leg has entered thereinto a nut 26 which is secured by a spot welding 2l in right angle relation to the axis of this portion of the leg, and the nut is threaded to receive a screw 28 which is entered through an obliquely 20 disposed bore 29 in the center post near the upperv end thereof, which bore is countersunk at its inner end to receivethe head of the screw and is located in such relation to the upper end on the post as to permit a screw driver to be manipulated A through the upper end of the post in order to draw the upper end of each leg into close abutment with the center post.

The base constructed as above described will aiord a strong and rigid support for a chair or 30 the like. By uniting the inwardly projecting pins 20 at the lower ends of the respective U-shaped legs in the manner shown, a strong, rigid and unyielding connection will be afforded and vertical thrusts will be adequately resisted.

In short, the coupling furnishes a bridge between the lower ends of the'legs, and the post I0 is supported medially upon said bridge inv such a way as to maintain a tight fit at all times between the center post and the' legs radiating 40 therefrom. This is due to the fact that a down` ward thrust exerted against the inwardly projecting ends of the pins 2i] will result in an inward thrust causing a cramping or binding of the inner faces of the lower ends of the legs against the outer surface of the center post, so that a tight, lrm joint will at all times be maintained. In view of the fact that the upper ends of the legs are under thrust inwardly against the center post and are not subjected in like degree to a downward thrust, a cross connection like the coupling 24 is unnecessary, which leaves the center of the post unobstructed for the travel of the standard I3 which supports the chair seat.

All of the connections, with the exception of the spot welds 2|, are completely hidden, and the welds 2| practically so, so that the center post and legs may be given a bright metallic nish, such as a chromium iinish, in keeping with modernistic designs in furniture, and at the same time the structure is one which permits of variation in the nish and conguration of the U-shaped legs without variation in general structure or the means provided for affording the connections.

Although the invention has been described with particularity as to detail, it is not the intention, unless otherwise indicated, to limit the invention to the particular structure shown, since modifications may be made therein without departing from the principles of the invention.

I claim:

1. In a base of the class described, the combination of a center post, radially extending legs of looped formation each having an upper end and a lower end in spaced radially abutting relation to the center post, connecting means extending from the lower ends of said legs and through transversely the interior of the post for aiording a bridge connection between the lower ends of said legs, and means for securing the upper ends of the legs to the post.

2. In a base of the class described, the combination of a center post, radially extending legs of looped formation each having an upper end and a lower end in spaced radially abutting relation to the center post, connecting means extending from the lower ends of said legs and through transversely the interior of the post for affording a bridge connection between the lower ends of said legs, a nut carried by the upper end of each of said legs, and a screw entered through the contiguous wall of the post and into the associated nut.

3. In a base of the class described, the combination of a center post, radially extending legs of looped formation each having an upper end and a lower end in spaced abutting relation to the center post, connecting means extending from the lower ends of said legs and through the interior of the post for affording a bridge connection between the lower ends of said legs, a nut carried by the upper end of each of said legs, and a screw entered through the contiguous wall of the post and into the associated nut at an oblique angle near the top of the post and in position to permit manipulation of the screw by a screw driver from a position above the post.

4. In a base of the class described, the combination of a tubular center post, a plurality of radially extending tubular legs each of looped formation affording upper and lower ends in spaced abutting relation to the center post, pins inwardly extending from the lower ends of the respective legs and into the interior of the post,

, a coupling member engaging said pins and affording a bridge connection between the legs, and means for securing the upper ends of the legs to the center post.

5. In a base of the class described, the combination of a tubular center post, a plurality of radially extending tubular legs each of looped formation affording upper and lower ends in spaced abutting relation to the center post, pins inwardly extending from the lower ends of the respective legs and into the interior of the post, a coupling member engaging said pins and affording a bridge connection between the legs, a screw for each of the upper ends of the legs, said screws extending obliquely through the contiguous wall of the post, and means within each of sai-d leg ends into which the associated screw is threaded.

6. In a base of the class described, the combination of a tubular center post, a plurality of radially extending tubular legs each of looped formation affording upper and lower ends in spaced abutting relation to the center post, pins inwardly extending from the lower ends of the Y respective legs and into the interior of the post,

a coupling member engaging said pins and affording a bridge connection between the legs, a screw for each of the upper ends of the legs, said screws extending obliquely through the continuous wall of the post, and means within each of said ends into which the associated screw is threaded, the respective screws being located near the upper end of the tubular post and in position to permit manipulation of each screw by a screw driver from a position above the upper end of said post.

'7. In a base of the class described, the combination of a tubular center post, a plurality of radially extending tubular legs each looped to afford upper and lower ends in spaced abutting relation to the center post, pins extending inwardly through the center post from the lower ends of the respective legs, said pins being rigidly secured to the respective legs, a coupling plug within the center post into which the inner ends of the pins are inserted and rigidly secured to afford a bridge connection for the lower ends of the legs, and means for holding the upper ends of the legs in abutting relation to the center post.

8. In a base of the class described, the combination of a tubular center post, a plurality of radially extending tubular legs each looped to afford upper and lower ends in spaced abutting relation to the center post, pins extending inwardly through the center post from the lower ends of the respective legs, said pins being rigidly secured to the respective legs, a coupling plug within the center post into which the inner ends of the pins are inserted and rigidly secured to afford a bridge connection for the lower ends of the legs, and screw means for securing the upper ends of the respective legs to the center 50 post.

9. In a base of the class described, the combination of a tubular post, a plurality of radially extending legs each of tubing looped to afford upper and lower ends in spaced abutting relation to the center post, pins extending inwardly through the center post from the lower ends of the respective legs, said pins being rigidly secured to the respective legs, a coupling plug within the center post into which the inner ends of the pins are inserted and rigidly secured to afford a bridge connection for the lower ends of the legs, a screw for each of the upper leg ends entered obliquely through the wall of the center post and into the interior of the leg ends and a member rigid with each leg end for receiving said screw to permit each leg end to be drawn into abutting relation to the center post.

10. In a base of the class described, the combination of a tubular post, a plurality of radially extending legs each of tubing looped to aiord upper and lower ends in spaced abutting relation to the center post, pins extending inwardly through the center post from the lower ends of the respective legs, said pins being rigidly secured to the respective legs, a coupling plug said screw to permit each leg end to be drawn into abutting relation to the' center post, the screws being located in close proximity to the upper end of the post and in position to permit manipulation thereof by a screw driver from 5 a. point beyond the upper end of the post.

O'I'I'O SCHACHTEL.

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