US1574963A - Chair base - Google Patents

Description

March 2 1926; 1,574,963

T. W. FOOTE CHAIR BASE Filed July 6, 1925 72007625 W fbole animate c Patented Mar. 2, 1926.

UNITED srarss THOMAS W. FOOTE, OF CLEVELAND, OHIO.

CHAIR BASE.

Application filed. July 6,

17. 0 all whom it may concern:

lie it known that I, THOMAS W. Foorn, a citizen of the United States of America, residing at 15128 Terrace Road, city of Cleveland, county of Cuyahoga, and State of Ohio, have invented new and useful Improvements in Chair Bases, of which the following is a specification.

This invention relates to ii'nprovements in an all wood construction for chairbases of the type used with revolving chair seats, stools, costumers and the like.

The principal object of the invention is to provide a base of this character having radiating legs inter-engaging at their inner ends and corner filler blocks interlocking with adjacent legs to prevent radial displacement thereof, and to effect a rigid joint capable of sustaining great weight without danger of spreading or collapsing.

A further object of the invention is the provision of interlocking joints, for wood bases of this character which because of their simplicity of construction and design are easily and neatly assembled and give a finished appearance to the completed article.

The invention, briefly stated, comprises a plurality of radiating legs having their inner ends interengaging, corner filler blocks arranged between adjacent legs and inter-v locking therewith to prevent radial disengagement of the latter and top and bottom plates attachable to the base to prevent transverse displacement of either the legs or blocks.

One embodiment of my invention is illustratively exemplified in the accompanying drawings, in which, Figure 1 is a perspective view of my improved chair base showing the associated metal parts separated from the base; Figure 2 is a plan view of the jointed mid-portion of the base; and Figure 3 is a perspective view of the inner end of a leg portion and the interlocking filler block therefor.

Referring to the drawings, 10 denotes the leg members of the base and 11 the corner filler blocks interlocking with adjacent legs 10 to form a rigid joint and to prevent radial displacement of the legs. A substantially star shaped plate 12 is attached to the bottom of the base and is provided with a center opening 13 adapted to register with a tubular core 1 1, insertible in a bore 15 formed by the interengaged inner ends of the legs 10, and carried by a plate 16 attach- 1925. Serial N0.41,579.

able to the upper sides of the legs, as illustrated in Figure 1. The plates 12 and 16, being attached after the blocks are in position, prevent the legs from becoming transversely displaced withrespect to one another. i

The legs 10 may be of any style and design appropriate for the purpose, and each is provided at its inner end with a straight plain surface 17 disposed at right angles to the plane of the sides of the leg and extending to substantially one half the thickness thereof. Coincident with the upright longitudinal center plane of the leg and adjoin ing the inner end of the surface 17 is a narrow projecting shoulder surface 18. The opposite upright side of the leg, at the end thereof projects beyond the plane of the surface 17 a distance equal to the width of the latter surface and terminates in a narrow end surface or toe 19 disposed on a plane parallel to the surface 17 and at right angles to the shoulder 18. Between the shoulder 18 and toe 19 the other half of the.

end of the leg 10 is curved inwardly to provide a segmental recess 20, of 90 degrees which when combined with the corresponding recesses of the other legs, forms the bore 15, as illustrated in Figure 2.

Each leg 10 is further provided adjacent its inner end with dovetail mortises 21, one thereof in each side. A triangular shaped corner filler block 11, having opposite sides provided with dovetail tenons 22, is inserted between each pair of adjacent legs 10 and the tenons 22 are received by the mortises 21 to complete an interlockingjoint.

In assembling the legs and blocks thus formed, the legs are arranged radially of a common center, so as to bring the end surface or toe 19 of each leg into contact with the shoulder 18 of the adjacent leg. In this position the surface 17 will seat against the projecting portion of the side 0fv the adjacent leg.

The corner filler blocks 11 are then arrange-d between adjacent legs with the mortises 21 in register with the tenons 22, and each block is driven downwardly until the ends of the blocks are flush with the upper and lower sides of the legs. Glue may be applied to the contacting surfaces in the joints if it is found necessary. The bottom and top plates 12 and 16 are finally attached and the base is made ready for finishing and receiving the revolving part to be supported.

What I claim and desire to secure by Letters Patent is:

1. A chair base comprising a plurality of legs having their inner ends shaped to form abore when the legs are assembled, each leg having on each lateral face adjacentthe inner end of the leg an elongated mortise two opposite walls of which are hook shaped with the hooks facing each other, and filler blocks insertible between the assembled legs, each filler block having on each lateral face a tenon conforming in shape to and designed to engage one of the mortises and an angular member intermediate the tenons designed to project into the angular space between the inner ends of the side walls of the legs.

2. A chair base comprising a plurality of legs having their inner ends shaped to form a bore when the legs are assembled, each leg having on each lateral face adjacent the inner end of the leg an elongated mortise two opposite walls of which overhang parts of the mortise and have their edges facing each other, and filler blocks insertible between the assembled legs, each filler block being generally of triangular shape in end elevation with a flat base and sides which are undercut near the apex, whereby when said filler blocks are in position between the assembled legs the corners at the base of the triangle and the undercut portions at the sides thereof will be engaged by the overhung walls, respectively, of the mortises of the legs.

3. A chair base comprising a plurality of legs each having at its inner end a curved segmental face and a plane face at right angles to the general plane of the segmental face with a shoulder intermediate said faces.

THOMAS W. FOOTE.

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