US274803A - Device for holding and forming chai r-fram es - Google Patents

Description

(N fiodel.

J. L. MAY.

DEVIGE FOR HOLDING AND FORMING CHAIR FRAMES. No. 274,803. gatented Mar.27,1883.

WITNESSES v INVENTOR' ATTORNEYS u. PEFERS. Fhm-uim n m Waahinghm. 04 c UNITED STATES PATENT OFFICE.

JOHN AY, on MARTINSBURG, PENNSYLVANIA.

DEVICE FOR-HOLDING AND FORMING CHAIR-FRAMES.

SPECIFICATION forming part of Letters Patent No. 274,803, dated March 27, 1883.

Application filed annary 27,1883. (No model.)

To all whom it may concern Be it known that I, JOHN L. MAY, a citizen of the United States, and a resident at Martinsburg, in the county of Blair and State of Pennsylvania, have invented certain new and useful Improvements in Devices for Holding and Forming Chair-Frames; and I do declare the following to be a full, clear, and exact de scription ofthe invention, such as will enable others skilled in the, art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1' of the drawings is a representation of this invention, and shows a perspective view. Fig. 2 is'a vertical section.

This invention has relation to devices for facilitating the manufacture of chairs, especially of rustic chairs, or chairs made of bent wood; and it consists in the construction and novel arrangement, in connection with a workbench or base-structure, of atrestleframe havin g a transverse trestle-pin and leg-clamps, and in rearof the trestleframe a post extending upward, and provided with formers, supporters, and clamps for the parts constituting the back ofthe chair, all as hereinafter set forth.

In the accompanying drawings, the letter A designates a broad, low work-bench or supporting-structure, which is mortised at b b to receive the feet of the standards 0 of the trestle-frame D. The front standards, 0, are usually made higher than the rear standards, and are connected to the latter by the inclined side bars, 0. The front of the trestle is braced bythe transverse front bar, g, and its rear portion by the transverse rear bar, h. perforations k in the rear standards passes the long transverse trestle-pin L. On the bench are located, at or near' the lower ends, respectively, of the front and rear standards, the clamps M and N, which are designed respectively to hold the lower ends of the front and rear legs of the chair in position while the chair is being constructed.

P represents the post in rear of the trestleframe D. Its lower end is securely mortised in the bench or base, and it extends upward to Through designed to support the parts forming the back of the chair, while the trestle-frame is intended to support the parts forming the body. The post P is provided with bearings q and 1, one

.above the other, to support arms S and T,

which extend forward, and are provided with bearin gs at their front ends for transverse supporting-bars U and V, which are reversed in The supporters U provided with a bearing at its end for the y arched top piece or bow-former, W, which is secured in position by means of thevertical pin d. The lower arm,T, is also provided with a bearing at its end to support a transverse bar, Z, having forks or gains Z in its ends,

which are designed to receive the outer bars of the chair-back, holding them in position to form the lower bends or elbows of said bars while the chair is being constructed. The bar Z is held in place by the vertical pin-d.

The body of the chairis builtover'the trestleframe, the lower ends of the legs being held in the leg-clamps. The rearleg-bars are extended upward to form the middle bars of the chairback, and are bent around in front of the ends of the trestle-pin in rear of the transverse supporter V and in front of the transverse supporter U, so that they are held firmly in position untilthechairisfinished. W and the transverse forked bar Z are de signed to form the bends of the outer or rim bar of the back, and are employed toward the end of the work, when the bowed rim-bar of the back is to be setin shape. The trestlepin is removable.

The illustration is designed to show a simple and strong method of constructing the chair-building frame, and the details of construction may be varied in many ways by those skilled in the art.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s

1. A chair-forming device consisting of a trestle-frame having a transverse trestle-pin and leg-clamps, and in rear thereof a post extransverse trestle-pin L, the post P, its arms S tending upward and provided with supporting and T, the transverse supporters U and V, the and forming devices for the chair-back, the bow-former W, and the transverse bar-bearing whole connected to a work-bench or support- Z, substantially as specified. 1 5 ingstructure, substantially as specified. In testimony whereof I affix my signature in 2. The combinatiomdwith the trestle-frName presence of two Witnesses. D, its trestle-pin L, an the leg-clamps of. a the post 1?, its arms S and T, and transverse .JOHN MAL supporters U andV, substantially as specified. Witnesses: 1o 3. The combination, with the trestle-frame W. S. NIGODEMUS,

and. leg-clamps M and N, of the removable U. SKYLEs.

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