US102178A - Chair - Google Patents

Description

nitrd Statua gaat aan.

ALEXANDER W. STEWART, Ol? BOSTON, MASSACHUSETTS.

Leners Patent No. 102,178,11ataz April 19, 1870.

.IMPROVED FOLDIN 'CHAIR The Schedule xefen'ed to in thele Letters Patent and making part of the same.

To all whom it may concern in the art to practice it.

My improved chair is, in some respects, like a folding chair shown in United States Patent No. 41,001, granted to P. J. Hardy, December '22, 1863, in that, both in said Hardys chair and mine, the seat tips up at the back as the chair is folded, bringing the top 'of the seat to the front, and in that theextended seat in such chair is supported at its front upon struts or braces, or a strut or brace-supported bar, the folding movement of the chair carrying these braces into the plane assumed by the pivoted frames and seat.

My improvement consists primarily in pivoting to the front legs of a chair having a falling seat, and below the pins by which the crossing legs are pivoted t0- gether, a seat-supporting frame or braces connected to and operated by the legs of the chair.

The drawings represent a. chair embodying my iml provements.

A shows a side elevation of the open chair.

B, a front elevation of it.

.C is avertical section of the foldedV chair.

As the invention relates wholly to the arrangemen and connection of the parts with reference to obtaining the requisite strength in `the open chair, and compact'ness in the folded chair, no upholstery is shown upon the frame.

The two crossing legs a b a" b' oneach side of the chair are shown as pivoted. together at c, and the legs a a', a bottom stretcher, d, and a-top stretcher, e, constitute a rigid quadrangnlar frame, in which the seat fis hung by pivot-pins g, the preponderence of weight being in front of the pivots, so that `the seat freely drops into,'or nearly into,A a plane with-the flame when the legs are folded? llhe legs bpb' constitute, with one or more stretchers, i, below the pivots, another frame, these legs beingpivotcd outside of and t0 the legs a a.

To support the sea-t in horizontal position two movable braces, k, are used, each brace extending from the legs under the seat, and rmly supporting the seat under any weight upon it. v

To automatically remove these braces, for folding the chair, each is jointed to theadjaeent leg, as seen at Land at-or near the upper end of each brace I connect it to a lever or arm, preferably worked by the other" legs, which lever or arm, as. the legs close together, swings the blaces inward, bringing them into, or nearly into, vertical line with the legs to which they are pivoted, and out of the path of tipping-down movement of the seat.

The brace-actuating levers are shown atm, each being fulerumed to the adjacent leg a, or a', and having its front arm provided with a finger or pin that enters a groove, n, in the side ofthe brace. The rear arm of the lever extends through an eye or loop, o, in a rail, 1J, connecting the legs b b', and, as the legs b'b' are lnoved into line with the legs a a', the rail and the legs to which the braces are pivoted force down the rear arms of the levers, and the front ends rearward, thereby bringing the braces into line with the legs.

When the legs are spread, the eyes or loops draw up the rear arms of the levers, `thus throwing forward their front arms and pushing out the braces, which, in their outward movement,4 tilt up the seat into horizontal position, and themselves assumea position to firmly suppoit the seat.

Undne spreading of the legs may be prevented by hooks q, on the rear ends of the levers, catching upon the eyes or loops o.

I claim- In combination with the crossing pivoted legs and with a dropping seat, the' seat-supporting braces pivoted-to the legs a a', and thrown out under the front of the seat when the legs are spread, and back into the plane of the legs when 4thev chair is folded, substantially as described.

ALEXR. W'. STEWART.

'Witnesses J. B. CROSBY, FRANCIS GoULD.

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