US7789A

US7789A - Extension-table

Info

Publication number: US7789A
Authority: US
Publication date: 1850-11-19
Anticipated expiration: 1867-11-19

Description

Vvania, have invented certain new and useful extension tables, bedsteads or other articles marten sTATEs PATENT oTTTcn.

E. F. SHOENBERGER, OF PITTSBURGH, PENNSYLVANIA.

EXTENSION-TABLE.

Specification of Letters Patent No.

T0 all 'whom may concern Be it known that I, EDWIN F. SnonN- BERGER, of Pittsburgh, in the county of Allegheny and Commonwealth of Pennsylimprovements in the construction of tables, counters, bedsteads, and other articles to which the principle of extension may be applied; and I do hereby declare that the following is a full and exact description of the same, reference being had to the annexed drawings, forming part of this specification, in which- Figure l represents a perspective view of a table constructed on my plan drawn out to its full length. Fig. 2 is a view` of the same table closed up. Fig. 3 is a perspective view of the same table turned upside down in order to exhibit the construe tion, one of the sections being drawn out to its full length and the remaining sections only partly extended. Fig. 4 is a perspective view of one of the inner sections of my table showing the under side as in Fig. 3.

Similar parts in the several figures arey designated by the same letters.

In order to enable others skilled in the art to construct and use my improvements I will proceed to describe them fully with reference to the accompanying drawings.

My invention consists in the construction and combination of the several sections of in such a manner as to slide inside of each other, so that when the several parts are pushed together the whole shall be inclosed in one section. In order to accomplish this object it is desirable to construct these parts of the tables or other articles which slide together of as4 thin a material as is consistent with strength and durability,because as each section (excepting the outside one marked a Fig. 3) slides into that one which is next above it, the sections thus overlapping each other, if the top pieces of the table are made of the ordinary thickness, it would cause an inconvenient variation or irregularity in the surface when the table is extended. To obviate this difficulty I propose to construct the top and side pieces of my tables, &c., of metal plates, about one sixteenth of an inch in thickness, so that in a table of eight sections the variation in height would be only one half of an inch in the whole length. In the drafts accompany- 7,789, dated November 19, 1850.

ing this specification the proportionate thickness of the top pieces of the sections is exaggerated in order to exhibit the construction more accurately. I do not however desire to claim as my invention the use of metallic plates, or to confine myself to their use in the construction of any articles made on any plan as my invention is usually applicable to tables or other articles-whether constructed of wood, metal, or any other suitable material.

The drawings accompanying this specification represent an extension table without reference to other articles, as bedsteads, counters, &c., &c., which may be made on the plan invented by me, and to which the same mode of extension may be readily applied. l

The construction of the several sections of the table is shown in Fig. 3, in which a is the outside end section, b b are the inner sections, which are of similar construction varying only in size and in the width of their side flanges ff and c represents the inner end sections, differing from the inner sections Z), only in having an end piece k, to which the legs Z Z are attached. The yconstruction of the inner sections 6, b is shown more clearly in Fig. 4;.

In the drawings, (see Figs. 3 and 41:) CZ, cl, are the side pieces which extend the whole length of each section at right angles to the plane of the surfaces of the table. Parallel to the surface or top of the sections are flanges f f which extend in ward from the under edge of the side pieces, (l, (Z, of each section. These (f, f) I call side flanges.7 At one end of each inner section b, and of the end section c, is a flange e pressedl downward and extending nearly the whole width of the section piece. These (e e) I call end flanges for the sake of distinction. The design of these end flanges is to act as guides or supports for the top piece of the sections to compensate for their extreme thinness. The side flanges f f necessarily vary in width as will be seen by reference to the drawing Fig. 3. The inner end of each side flange has a catch or projection g, which rises as lhigh as the thickness of the adjoining flange.

This projection, or catch prevents the sections from drawing out too far, when the table is extended, by resting against the requiring extension, in sections, because thathas been known and used before; but

What I do claim as my invention is- The construction of extension tables in such a manner as that the' sliding parts when extended shall constitute a table complete without any replacing of panels to form the leaf, substantially in the manner hereinbefore set forth.

EDWIN F. SHOENBERGER. Witnesses: BENJ. PA'l'loN, WM. BAKEWELL.