US138571A - Improvement in extension tables - Google Patents

Description

s. H MARTIN,

Extension-Tables. 1 10.138571. Patented May;6,187.

Witnesses: A lnventulr: W 4 P Attorneys! UNITED STATES PATENT OEEIcE.

SAMUEL H. MARTIN, MOUNT VERNON, NEW YORK.

IMPR OVEM ENT lN EXTENSION TABLES.

Specification forming part of Letters Patent No. 138,571, dated May 6, 1873; application filed March 8, 1873.

To all whom it may concern:

Be it known that I, SAMUEL H. MARTIN, of Mount Vernon, in the county of Westchester and State of New York, have invented a new and useful Improvement in Extension Tables, of which the following is a specification:

The object of this invention is to so construct an extension table that there shall be no loose pieces belonging to itto be put on when it is extended and taken off when it is contracted.

The invention consists in the improvement of extension tables, as hereinafter described and pointed out in the claims.

In the accompanying drawing, Figure 1 is a top or plan view, showing the table extended. Fig. 2 is a vertical longitudinal section of Fig. 1 taken on the line 00 m. Fig. 3 is a horizontal section of Fig. 2 taken on the line y y. Fig. 4 is a diminished view of the table contracted.

Similar letters of reference indicate corresponding parts.

This table is supported by the legs A on rollers B, which rollers revolve on pivots in the bottoms of the legs, and, consequently, extend transversely from one leg to the other, thus protecting the carpet. 0 represents a portion of the table-top, at each end of the table which,like the ends of ordinary extension tables, is rigidly fixed to the legs. The two central legs are connected with the two end legs marked A, and they form together a frame-work which supports the transverse octagonal shaft D. E is the flexible top of the table, composed of sections F, which are hinged together, as seen in Fig. 1. This flexible top is supported bya chain, G, on each side, formed of plates connected by joint-rivets. The two chains are connected by transverse rods or stretchers. One end of each chain is attached to the insides of theflanges H, which flanges are on the ends of the shaft D. The flanges are octagons, the sides of which correspond with the width of the sections of the flexible top E. The other ends of the two chains are attached to the nu der side of the other end of the table by means of rods I I, connected together by a cross-bar which, has longitudinal play in the slot-plate J. (See Fig. 2.) As the shaft D is revolved the chains wind up on it, and the flexible top E winds up on the flanges H H, to which the first section is rigidly attached. The two chains are not parallel with each other, but approach each other as they recede from the shaft, as seen in Fig. 3, so that, when winding up, they fold toward the center of the shaft. In Fig. A the form of the table is seen when closed.

I do not confine myself to any particular form. The ends of the table may be round or convex, and other variations may be made Without departing from my invention. The journals of the shaft extend through, as seen in Fig. 4, and are made square, so that a key or wrench may be applied for revolving the shaft.

Having thus described my invention, I claim as-ne-w and desire to secure by Letters Patent-- 1. An extension table having a flexible top, F, chains G G, octagonal shaft D, and flanges H H, arranged to operate substantially for the purpose described.

2. In combination. with the chains G the slot-plate J, as shown and described.

SAMUEL H. MARTIN.

Witnesses: '1. B. MOSHER, ALEX. F. ROBERTS.

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