US211175A - Improvement in chairs - Google Patents

Description

3 Sheets-Sheet 2.

11.11 NEWELL.

Chair.

gatente d Jan 7, 1879.

gWITNESSES V ATTORNEY N. PETERS. PHOTO-Ll OGRAPHER WASHINGTON D c 3 Sheets-Sheet 3.

D. P. NE'WELL.

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Ptentd Jan. 7, 1879 I g INVENTOR:

TTQRNEY N.PETHS, PBOTO-LITHOGRAPMER WASH NGTDN D C UNITED STATES PATENT OFFICE.

DANIEL P. NEWELL, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN CHAIRS.

Specification forming part of Letters Patent No. 211,175, dated January 7, 1879 application filed September 17, 1878.

To all whom it may concern:

Be it known that I, DANIEL P. NEWELL, of Chicago, inthe county of Cook and State of Illinois, have invented certain new and useful Improvements in Chairs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improyement in chairs, the object being to construct chairs in such a manner that the several parts may be manufactured and transported as knock-down chairs.

In the accompanying drawings, Figure 1 is a view, in perspective, of a chair embodying my invention. Fig. 2 is a detached view representing the difierent parts of the chair. Fig. 3 is a vertical section through the front legs of the chair, and Fig. 4 is a side elevation of my improvement.

A represents the chair-bottom. B are the chair-legs. Each leg is provided with an upper screw-threaded end, a, which fits within a screw-threaded socket formed in the chairbottom.

C are the chair-rounds, each having a right and left hand thread, I) 0, formed, respectively, on its opposite ends, which fit with corresponding right and left hand screw-threaded sockets, d e, in the chair-legs. I

The chair'legs are first screwed tightly int the chair-bottom, after which the legs are slightly sprung-apart and the rounds inserted, and by turning them in one direction the screwthreaded ends draw the legs together until the rounds are firmly secured in place.

D represents the side pieces of the chairback. The lower ends, f, are made of sufficient width to insure an extended bearing on the seat-bottom, and allow the side piece to be firmly attached to the bottom by means of two or more screws, g.

E is a top cross-piece of the frame, and before the same is secured to the side pieces the back spindles are placed in position and properly secured by means of the screw-threaded ends h i, which fit in corresponding screwthreaded sockets in the seat-bottom and top tom by smooth tenons and secured by a coat-' ing of glue, the variable changes of the temperature and atmosphere operate to impair the holding strength of the glue, and the legs become loose and impair the durability and worth of the chair. The same is also true of the chair-back and leg-rounds.

In a chair constructed in accordance with my invention, the screw-threaded joint between the several parts of the chair precludes any displacement of the several parts when subjected to ordinary usage. If desired, the screw-threaded ends may be covered with a coating of glue, to insure a more rigid joint and obviate the turning of the legs or rounds.

I do not limit myself to the construction of chairs of the particular style shown in the accompanying drawings, as it is evident that the improvement may be embodied in any style or form of chair.

The improvement is specially adapted to rockin g-ch airs. The legs of the ordinary rock ingchair often become loosened from the rock er but by forming thelegs with screw-threaded ends, and securing their opposite ends in screw threaded sockets in the seat-bottom and rock er, the parts are secured against any displacement.

I do not limit myself to the particular meth= 0d shown and described of joining the back frame of the chair to its seat, as any plan or construction may be adopted without depart ing from the spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-- A chair provided with legs screw-threaded on their upper ends ,Eleg-rounds the opposite ends of which are formed with right and left hand screw-threads, Which engage in corresponding tom by screws extending upwardlythrough screw-threaded sockets in the chair-legs backthe chair-bottom, substantially as set forth. spindles the opposite ends of which are pro 'In testimony that I claim the foregoing I vided with right and left hand screw-threads, have hereunto set my hand this 4th day of which engage in screw-threaded sockets in the September, 1878.

chair-bottom and cross-piece of the chair-back, DANIEL P. 4 NEWELL. and chair-back sides the upper ends of which Witnesses: are secured to the ends of the cross-piece by P. J. BLAKE,

screws, and the lower ends t0 this chair-bot- REUBEN SMALL.

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