|Publication number||US3703871 A|
|Publication date||Nov 28, 1972|
|Filing date||Jan 18, 1971|
|Priority date||Jan 19, 1970|
|Publication number||US 3703871 A, US 3703871A, US-A-3703871, US3703871 A, US3703871A|
|Inventors||Bertelsen Henry Filso|
|Original Assignee||Bertelsen Henry Filso|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (9), Referenced by (5), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent Bertelsen  Nov. 28,1972
 TABLE EXTENSION 1,870,222 8/ 1932 Balschuweit 108/74 X 730 473 6/1903 Palladino 108/74  Inventor. Henry Filso Bertelsen, Industnvey 1, I Kibaek Denmark 1,328,243 H8083]  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  Foreig" Application Priority Data Primary Examiner-Francis K. Zugel Jan. 19, 1970 Denmark ..207/70 A rney-Kenyon & Kenyon Reilly Carr & Chapin  US. Cl ..108/66, 108/73  ABSTRACT  Int. Cl. ..A47b l/05 The leaf extensions are mounted on a set of short side  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  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.
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.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US730473 *||Nov 25, 1902||Jun 9, 1903||Gaetano Palladino||Extension-table.|
|US811209 *||Mar 26, 1904||Jan 30, 1906||John H Farrell||Knockdown support.|
|US1328243 *||Jul 26, 1919||Jan 13, 1920||Hensal Elmer A||Extension-table|
|US1388708 *||Apr 1, 1920||Aug 23, 1921||Hermans John||Extension-table|
|US1472129 *||Dec 9, 1921||Oct 30, 1923||Meixell Clyde C||Shelf|
|US1870222 *||May 31, 1930||Aug 9, 1932||Wilhelm Balschuweit||Extension table|
|US1922478 *||Feb 15, 1932||Aug 15, 1933||Seng Co||Extension table|
|US2703740 *||Nov 29, 1952||Mar 8, 1955||Marie Cochard Jean||Segment extension leaves for round or oval tables|
|DE1243355B *||Sep 8, 1966||Jun 29, 1967||Haslocher Ausziehtisch Und Moe||Verwandlungstisch|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4069770 *||Apr 30, 1976||Jan 24, 1978||Henry Filso Bertelsen||Table with an undivided table-top|
|US4069771 *||Apr 30, 1976||Jan 24, 1978||Henry Filso Bertelsen||Oval table with undivided table top|
|US4201816 *||Dec 12, 1978||May 6, 1980||Bertelsen Henry F||Basis for a tabletop for an extension table|
|US4862230 *||Sep 14, 1987||Aug 29, 1989||Nec Corporation||Double heterostructure light emitting diode|
|US20070278916 *||May 31, 2007||Dec 6, 2007||Cermak James J||Crawl space storage system|
|U.S. Classification||108/66, 108/73|
|International Classification||A47B1/05, A47B1/00|