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Publication numberUS3703871 A
Publication typeGrant
Publication dateNov 28, 1972
Filing dateJan 18, 1971
Priority dateJan 19, 1970
Publication numberUS 3703871 A, US 3703871A, US-A-3703871, US3703871 A, US3703871A
InventorsBertelsen Henry Filso
Original AssigneeBertelsen Henry Filso
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Table extension
US 3703871 A
Abstract
The leaf extensions are mounted on a set of short side extension bars and a set of long middle extension bars. The middle extension bars, when in the extended state, are restrained against pivoting by retaining slabs secured to the cross-frame. In order to permit the middle extension bars of diametrically opposed sets to slide over each other, the sets are provided with different profiles so as to slide on the retaining slabs into different planes.
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Description  (OCR text may contain errors)

United States Patent Bertelsen [45] Nov. 28,1972

[54] TABLE EXTENSION 1,870,222 8/ 1932 Balschuweit 108/74 X 730 473 6/1903 Palladino 108/74 [72] Inventor. Henry Filso Bertelsen, Industnvey 1, I Kibaek Denmark 1,328,243 H8083] [22] F1 d J 18 1 1 811,209 l/1906 Farrell ..l08/66X i e an. 97 1 pp No 107 FOREIGN PATENTS OR APPLICATIONS 1,243,355 6/1967 7 Germany 108/73 [30] Foreig" Application Priority Data Primary Examiner-Francis K. Zugel Jan. 19, 1970 Denmark ..207/70 A rney-Kenyon & Kenyon Reilly Carr & Chapin [52] US. Cl ..108/66, 108/73 [57] ABSTRACT [51] Int. Cl. ..A47b l/05 The leaf extensions are mounted on a set of short side [58] Field of Search extension bars and a set of long middle extension bars. The middle extension bars, when in the extended state, are restrained against pivoting by retaining slabs [56] Refernces Cited secured to the cross-frame. In order to permit the mid- UNITED STATES PATENTS dle extension bars of diametrically opposed sets to slide over each other, the sets are provided with dif- 2,703,740 3/1955 Cochard 108/66 ferent profiles so as to Slide on the retaining Slabs into 1,472,129 lO/l923 Meixell 108/69 difl-erent planes. 1,922,478 8/1933 Fox ..l08/72 1,388,708 8/1921 Hermans ..108/73 4Claims,4DrawingFigures H u 2 4: U j 1 W 4- J r I L 2 J11! K 1T jar" Tl" W, k 2 ll l |l||| I l l l 5 PATENTEUHUVZB I 3.703.871

' SHEET 1 [IF 2 i 1 I 2 JV '(K INVENTOR. HENR Y Fhso 56 -77655 Y PATENTEnuuvze I972 3.703.871

A 4 HEQF a l 1 ii INVENTOR. HENRY F7450 652751. 5

TABLE EXTENSION This invention relates to a table extension for tables with undivided central table top and extension panels which may be added by drawing out the panels.

The purpose of the'invention is above all to provide a table extension which in an easy way makes it possible to add a ring of extra panels around a round'table with undivided central table top,- this being done by drawing out two one-eighth circle-ring panels placed'upon one another and hinged together; these panels are placed beneath the table and upon drawing out, one of the panels is folded out from the other panel. The table has four such sets of panels.

Various suggestions have already been made for obtaining a bigger table top on round tables by meansof extensions but these known constructions are complicated and therefore expensive and are furthermore difficult to handle.

The table extension according to the invention has the merit of being very simple.

The table extension according 'to the invention is characterized by the fact that beneath the'central table top there is arranged a fixed construction called an arm-cross consisting of four arms perpendicular to one another. At each of the four arms of this arm-cross there is placed a retaining slab and each extension panel has near its edges short side extension bars and near to its middle a pair of longmiddle extension'bars. These bars all rest on the frame-of the table and the middle extension bars furthermore engagethe underside of the retaining slab with a view to preventing tiltin g down.

The invention will be further illustrated in connection with the drawing in which FIG. I is a part of a circular table seen from below and having the extension according to theinvention,

FIG. 2 a section according to line lIlI of FIG. 1,

FIG. 3 a sketch of principle of a square table having the extension according to the invention and FIG. 4 a section through an extension panel having its middle extension bar modified in such a way that the extensions may cross one another under the center of the table.

The table shown in the drawing has a central table top P, which may be rotatable about a pinion T (FIG. 2), a frame S and legs not shown.

Beneath the table top P are arranged four one-eighth circle-ring extension panels U1 which are hinged two by two, by means of hinges H, to corresponding panels U2.

Beneath each extension panel D1 are fastened two side extension bars 1 having a stop 4 for engagement against the frame S and two middle extension bars 2 sliding on either side of an arm-cross K placed under the center of the table, the ends of the arms of the armcross each carrying'an retaining slab 3 which'in the drawn-out position of the panels U1 prevent the latter from tilting down.

In non-extending condition the four pairs of middle extension bars 2,2 meet just under the middle of the table in the embodiment shown in FIG. 1. However, the extension panels may be so large in comparison to the central table top P that it is desirable to make the middle extension bars cross one another under the middle of the table.

In that case one may make an arrangement to the effect that the middle extension'barsfln two diametrically opposite one another placed extension panels, may be staggered in the same plane so that they may pass one another without collision. The two oppositely directed arms of the arm-cross K should in this casealso be staggered a little in relation to one another. The other pair of diametrically-oppositely arranged middle extension bars should then also have a profile which is slightly modified in comparison to the middle extension bars 2 shown in G2. A profile modified in this way is shown in FIG. 4.

lt should be remarked thatthe-profile of the middle extension bars 2 modified in this way has a more abruptly raising edge for engaging the retaining slab 3 and the retaining slabs 3 in this pair of diametrically oppositely arranged'retaining slabs are therefore placed lower than the other" retaining slabs '3.

Finally itshould be remarked that the invention is not restricted to round tables having an undivided central table top. The extension may also be used in for instance the table shown in FIG. 3 which has a square middle top P and rectangular extension panels U1 and U2 according to otherwise the same principle as in FIGS. 1-3.

Irrespective of the form of the'table, the support of the panels U2 which may be'folded out from the panels U1 is preferably simply arranged 'by means of stops placed under the central table top; these stops may preferably be pushed away underthe edge of the table top when the table is used with its small diameter.

Between the four sets of extension panels there -will be openings under the central table top. These openings may, if desired, be filled with suitable shaped wooden blocks whereby the table will obtain a more handsome look when the table panels are not drawn out. w

The present extension may also'beused for oval and elliptical tables.

I claim:

1. An extension table comprising a table with an undivided central table top (P) overlying a supporting frame and extension panels which may be added by drawing out, characterized by the fact-that beneath the central table top (P) there is arranged a fixed fourarmed arm-cross (K) on each of the arms of which there is fastened a retaining slab (3) and that each extension panel (Ul) near its edges have short side extension bars (1) and near its middle have-long middle extension bars (2) slidably mounted about one arm of said arm-cross, the said extension bars all resting upon the frame (S) of the table and the middle extension bars (2) engaging the underside of a retaining slab (3) for preventing tilting down of thepanel.

2. A table comprising a central table top;

a four-armed arm cross under said table top;

a retaining slab mounted on each respectivearm of said cross;

a frame beneath said table top and disposed about said arm cross;

a plurality of extension panels;

a pair of middle extension bars-secured medially to alternate ones of said panels, said middle extension bars being slidably mounted about a respective slidably resting on said frame.

3. A table as set forth in claim 2 wherein said table top is circular.

4. A table as set forth in claim 2 wherein said side ex- 5 tension bars each include a stop for engaging against said frame upon extension of said side extension bars.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US730473 *Nov 25, 1902Jun 9, 1903Gaetano PalladinoExtension-table.
US811209 *Mar 26, 1904Jan 30, 1906John H FarrellKnockdown support.
US1328243 *Jul 26, 1919Jan 13, 1920Hensal Elmer AExtension-table
US1388708 *Apr 1, 1920Aug 23, 1921Hermans JohnExtension-table
US1472129 *Dec 9, 1921Oct 30, 1923Meixell Clyde CShelf
US1870222 *May 31, 1930Aug 9, 1932Wilhelm BalschuweitExtension table
US1922478 *Feb 15, 1932Aug 15, 1933Seng CoExtension table
US2703740 *Nov 29, 1952Mar 8, 1955Marie Cochard JeanSegment extension leaves for round or oval tables
DE1243355B *Sep 8, 1966Jun 29, 1967Haslocher Ausziehtisch Und MoeVerwandlungstisch
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4069770 *Apr 30, 1976Jan 24, 1978Henry Filso BertelsenTable with an undivided table-top
US4069771 *Apr 30, 1976Jan 24, 1978Henry Filso BertelsenOval table with undivided table top
US4201816 *Dec 12, 1978May 6, 1980Bertelsen Henry FBasis for a tabletop for an extension table
US4862230 *Sep 14, 1987Aug 29, 1989Nec CorporationDouble heterostructure light emitting diode
US20070278916 *May 31, 2007Dec 6, 2007Cermak James JCrawl space storage system
Classifications
U.S. Classification108/66, 108/73
International ClassificationA47B1/05, A47B1/00
Cooperative ClassificationA47B1/056
European ClassificationA47B1/05R