US144080A - Improvement - Google Patents

Description

- 2Sheets--Sheeti. G. FELDKAMP. Chairs. No. 144-,08-0. Patentedomuzsnms.

2Sheets--Sheet2,

a. FELDKAMP.

Chairs. N0, 144,080. Patented Oct. 28,1873.

UNITED STATES PATENT DFFIGE.

GEORGE FELDKAMP, OF CINCINNATI, OHIO.

IMPRQVEMENT IN CHAIRS.

Specification forming part of Letters Patent No. 144.080, dated October 28, 1873; application filed August 13, 1873.

To all whom it may concern:

Be it known that I, GEORGE FELDKAMP, of Oincipnati, Hamilton county, Ohio, have i11- vented a new and useful Improvement in Chairs, of which the following is a specificationi My invention has for its object the more secure junction of the legs with the seat-frame of a chair, by means which, at the same time, serve to strengthen the said frame at the part where it is most liable to break asunder; and my invention is particularly designed for the class known as the round seat or cottage chair, whose seat-frame is of circular, or approximately circular, form, and composed of four sawed arc pieces or segments. In the most common and economical form of this seat the junctions of the front segment with the side segments occur near the jimctions of the front legs with the seat-frame, and at a part of the segment which is unavoidably weak, owing to the grain of the timber running nearly athwart said front segment near its ends where the legmortise has to be made. In order to re-enforce and stiffen the seat-frame at this part, and at the same time strengthen the glued joint which unites the abutting ends of the front and side segments, and to also strengthen the leg at this part, I provide a cleat which, being securely fastened to the under side of the seatframe, so as to overlap the joint which unites the front and side segments, is mortised to receive the leg-tenon, which is introduced clear through said cleat into the substance of the seat, in the manner hereinafter explained.

, Figure 1 is a perspective under-side view of a portion of a chair-seat and attached leg embodying my invention. Fig. 2 is a partiallysectionized elevation of the same. Fig. 3 is a perspective view (inverted) of a modification of my improvement. Fig. 4 is a vertical section of said modification. Fig. 5 is an underside view representing my improvement ap plied to a square seat. Figs. 6 and 7 show modifications of my improvement.

A and B represent, respectively, the abutting portions of thefront and one of the side segments of a chair-seat of the cottage or circular form; C, the glued and doweled joint formed by the abutting ends of said portions. D is a cleat, preferably of some hard wood,

which is glued and screwed, nailed or doweled, as represented, or otherwise firmly secured to the under surface of the seat-frame, in such a manner as to cover, at one and the same time, the most crossgrained parts of the segments, including the part weakened by the leg-mortise, and also to so far overlap the side segment as to cover and strengthen the butt-joint which unites it with the front segment. (1 represents the leg-mortise in the cleat, which eX- tends into the frame, as shown at 01 and d 01 represent orifices for the screws E or dowels F. L represents the leg, and 1 its tenon occupying the mortise or socket d (1 The width of the cleat may be such as to extend from near the outer edge of the frame to within a short distance of the cane-holes G, as in Fig. 1, or may extend to the inner edge of the frame, and be perforated for cane-holes, as in Fig. 3, where H shows a projection, which reaches to or near the inner edge of the seatframe, and G the cane-holes in said projection.

Beside adding largely to the strength of the chair at its otherwise weakest part, the improvement imparts a more substantial, tasteful, and symmetrical appearance.

Although described and more particularly intended for roLmd-seat chairs, my improvement may obviously be usefully applied to rocking, rim-back, and other chairs. It is applicable to all cane-seat and other chairs, settees, 850., where the bottom is set into or upon a frame. I

The cleat may, if desired, have a tongue or tenon, which tongue a may have vertical sides, and be inserted vertically into the mortise b in the frame, or the tongue may have the doveand other articles of furniture have before been secured and strengthened by socket pieces attached to the under side of the frame. This, therefore, I do not broadly claim, but such a device has never been applied in the manner described by inc-that is to say, with leg-fem ons passing through the socket piece and into the frame at a point remote from the joint in the latter.

By this peculiar construction I avoid the respective defects incident to each mode of construction heretofore adopted, and combine several useful results which, though not sepa rately new, are for the first time combined, and unite to produce a structure-of superior strength.

These results may be stated as follows: First, the cleat crossing the joint performs its usual function of strengthening the said joint. Second, the leg-tenon, passing through the cleat and into the frame, so as to take hold of both, cannot exert a direct strain upon the cleat to wrench it from the frame, and hence does not impair the strengthening effect of the cleat. Third, by locating the mortise or leg-' tenon at a point remote from the joint in the frame I avoid the weakening effect which the said tenon would otherwise exert on the said joint, as it is manifest that, where the tenon enters the-frame at'the joint, any lateral strain on the leg will tend to wrench the joint open, and that this weakening effect would more than counterbalance the advantage resulting from passing the tenon completely through the seat into the frame.

What I claim, therefore, as new, and desire to secure by Letters Patent, is-

1. The combination of the socket-cleat D, secured to the frame A B and crossing the joint 0, and leg L passing through the socket piece and into the frame at a point removed from the joint 0, all as specified.

2. The combination of the cleat D with tongue or tenon a, and the seat-frame A B with corresponding mortise b, as and for the purposes set forth.

In testimony of which invention I hereunto set my hand.

GEORGE FELDKAMP. Attest:

GEO. H. KNIGHT, J OHN KILOH.

Images