US2520810A - Lateral moving table leg fastener - Google Patents

Description

Aug. 29, 1950 F. E. H. OHLSSON I I 2,520,310

LATERAL MOVING TABLE LEG FASTENER Filed July 25, 1947 WWW Q6; P15 5 Patented Aug. 29, 1950 EATERAILMOKHNG TABLE IiEGsFASTENERi FolkeEi'liiiglHerlowt Ohlsson, Malnio, Sweden, as-

signor to Kooks snickerifabriker'Az-lfl, Ma'lmo';

Sweden; acornorationof Sweden Application'lulwzfi; 1947; Serial-No. 763,543 lnlsweden Maye21', 1946 3. 'Claims; 1 f

' The use of easily mountable and'i removable legs in" furniture; especially tables; presents" at great I For thistreasorr ithas previously beenj proposed to: make legs of furniture easily,- mountable and" removable. andthebody partof a piece-oi furniture',.e; g. a table topgtis="provided' with oneor' more grooves having converging backed-off side walls, whereas the legs belonging to-the"piece"of furniture are provided "with i one 1 or'more' wedges for dovetail engagementwithlrespective" grooves? However, the known constructions'v of "this type haveeseveral' disadvantages; Among these there may be. mentioned. the following: ones. The. wedges 1 are. not securely, flied" to the. legs, the backed-'ofiledges ;of.lthe. grooves are notsupported; inLa-i way, toensure. complete; safety. to. the pressure exerted; on. the. same by the wedges; Y and thewconstructions(are/of ainaturewhieh has made it"impossiblepractically to use said constructions in furniture, upon-whichdemands aremad'e with respect to the aesthetical appearancethereof.v

An essential object of the invention is, there fore tofprovidea :piece. of furniture-of the /above! mentioned type, which is constructed in sucha mamierr'that" thetb'aoked-sofi edges =oi1thef=grooves are securely supported.

Another objct'iof the invention Vis to provide for; at suflicient. connection. between. the fixing wedges and the legs, in furnituremf the typeiin question. H

A further object of the invention" is to provide slinpi and reliable means for readjustment of the positions of the- -fixingwedges in the grooves upon a." possibledrying ofthe fiirniture 1 wood;

Further a'dvantagesand objectsef the invention" will appear-from the foliow-ing description ofsome I embodiments ofthe invention" shown asrexampl'es onlyin'the accompanying'gdrawing. Inithedrawing:

Fig? 1 is a' perspective wiewwf a: tabl a'ccording to the invention;

Fig 2 is a vertical section taken along. the line-II-l-ILin Fig. 1.

Figs,,-. 3'. and 4' are sectionsv along the li nes III-.i-III. and IV -I'V," respectively,- ,in Figs 213V Figs: 51- andLGI' similm'fto'l Fig: 2:: show 'aiter'natii/e embodiments .oftheinventioni Fig; '7 shows aimodificatioztofitne'invention:i

The wooden: tableshown" in* Fig? 1' in "the usual' mannerz" comprises a= table topi Ii and? four legs 2: which 'are'easily mountabl-y andi'r'emovably fixe'd' to theztabl-top; Forrmountingitheilegs- 2? there is: forfeachile'g alwood'eniplate? 3:'g1ued;'on t'o the under!sidei ofithetable top I; in which-platethei e is: provided: a groove-idefined by foiirisidewalls 4', .4 4a iandui'bgxthertwo oppositei wallsidof which converge towards one end of the 1 groove: and I to wardsetiter-downward:facing' mouth of'the groove? At the upper endof 3 each leg there? is provided" laterally extending member- 5: whoseswood fibers extend .in att re longitudinal direction: off. the? part and. whichzat: l 9 issdovetailedi into and glued f to theiileg 2'; 011 the. upper side of each member 5 there is provided. an integral 1 wed-ge 5: which issadapted iforfdovetail engagement with tlietsid'e walls-i iofitheiplate 3. Theigroovesrmltheiiplaite 3? and sthe wed'ge? 6 are "s'o dimensioned thatthewedge can. be:- introduced? in" the -rooverat? its wider: end; amdiengag'esri'the 'side walls: 41- offthe groove-upon displacement o'ft 'tlrefleg auditions of thetwe'dgeztowardsetlie HaIKrOWTeIRibT tHE groove before'itherwedgei be'ars against theend walli m at the narrow? end: of: the? groove: The" member 5*. has= such. a. length" that ittcompletely covers tries-groove izrthei'platei- 3: (see?- therd'ot and dash line of .Fi'gi". 4 r and Y presents an": elongated- 1 hole 1 for a: woodf screw"? which: aiterrfasteni-nig' of the leg serew'e'da into the table-top: forrthe' purpose" of. preventing" an inadvertent displace ment off thetrwe'dge. 6- towards the: wide" end; of

the groove-2 If: the: wood: siioitidi dry" aftertthe whereafter tlie screw-81 is: againflti'ghtened; The

displaceriient of the wedge without having: to remove the 's'crew completely from the tabi top I is "made p'ossible by the elongated hole'l which has its long 'dimension"in thelongititdinal 3 of the wedge 6 is less than the depth of the groove in the plate 3 so that there isformed a small clearance 20 between the upper side of the wedge and the under side of the table-top i, whereby there is no risk for the wedge to press against the table-top with such a force, upon dimensional changes of the wood owing to changes of humidity, that the plate 3 is worked loose from the table-top, or the wedge or the plate 7 is broken.

Instead of arranging the groove in a special plate 3 glued to the table-top I, it is sometimes advantageous to provide the groove directly in the under side of the table-top 8, as is evident from Figs. and 6. In the embodiment accordingto Fig. 5 the parts are, for the rest, of the same construction as described with reference to Figs. 1 to 4. In the embodiment according to Fig. 6 the wedge 6 is however fastened in another way than by means of a wood screw 8' in an elongated hole 1. Instead the transverse wall '9 at the wider end of the groove is here inclined in the longitudinal direction of the groove, as is apparent from Fig. 6, and on the member 5 of the leg 2 there is fixed a spring 10 the free end of which may be pressed against the inclined transverse Wall 9 by means of a screw ll, so that the wedge 6 cannot be displaced towards the wider end of the groove. When the wood possibly dries, all'that is necessary is to knock the wedge somewhat towards the narrow end of the groove and to tighten the screw 1 1 until the end of the spring 4 end thereof being pressed against said inclined side wall at the wide endof each groove by means of said screws whereby displacement of the wedges toward the wider end of said grooves is prevented.

2. A piece of furniture comprisin a body portion and legs supporting said body portion, side walls on said body portion defining a number of grooves, two opposite straight side walls of each groove converging towards one end of the groove and towards the downward facing mouth of the groove, wedges for dovetail engagement with said converging side walls, said legs having lateral extensions at the top end thereof carrying said wedges and wholly covering said mouth of each groove and abutting said body portion along the margin of each groove when said legs are at tached to said body portion by engagement between said wedges and said converging side walls, so as to support said converging side walls along their whole length through the material ofsaid body portion against displacement under the influence of the wedge forces generated bysaid through said elongated holes into said body per- Ill again bears against the inclined end wall 9.

' A modification of the invention is shown in Fig. 7 and consists in that a leg pair [4 and an inter mediate border member 15 are connected to a unity which may be easily removably fixed to a table-top it by means of a wedge l! on the border member and by means of a groove of the kind described in the table-top. The wedge is held in fixed engagement with the groove by means of wood screws 18 which through holes in the herder member are screwed into the table-top.

The invention must of course not be considered as limited to the embodiments described above and shown in the drawings, as several modifications can be made without departing from the spirit 'of the invention. It may be pointed out especially that the device according 'to the invention can be used for fixing legs on other furniture body portions than table-tops, such as cupboards, chair seats, etc. Instead of usin one single wedge for fixing a leg, it is possible to use several wedges and corresponding grooves, although this is generally not necessary.

What I claim and desire to secure by Letters Patent is:

1. A piece of furniture comprising a body portion and legs supportin said body portion, side walls on said body portion defining a number of grooves, two'opposite side walls of each groove converging towards one end of the groove and towards the downward facing mouth of the groove, wedges for dovetail engagement with said wedges, said lateral extensions carrying said Wedges having tapered holes therein elongated in the longitudinal direction of said wedges toward the top edge thereof, locking screws projecting tion for locking said wedges in desired position between said converging side walls, said tapered holes permitting tightening connection between said wedges and said body portion withoutv displacement of said screws from said body portion.

3. A piece of furniture comprising a body portion and legs supporting said body portion, a plurality of grooves formed in the underside of said body portion, two opposite straight side wallsof each groove converging towards one end of the groove and towards the downward facing mouth of the groove, wedges for dovetail engagement with said converging side Walls of corresponding.

shape therewith, said wedges having a height less than the'depth of said grooves, said legs having lateral projections on the top edge thereof carry-= ing said wedges and Wholly covering said mouth of each groove and abutting said body portion along the margin of each groove when said legs are attached to said body portion by engagement between said wedges and said converging side walls, so as to support said converging side walls along their whole length through the material of said body portion against displacement under the influence of the wedge forces generated by said wedges.

FQLKE ERLING HERLOW OI-ILSSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 568,397 Birely 1 Sept. 29, 1896 639,781 Sleeth Dec. '26, 1899 655,358 Symth Aug. 7, 1900 722,462 Gruender Oct. 18, 1904 835,582 Tobey 1 Nov. 13, 1906 1,292,090 Schimmel Jan. 21, 1919 1,793,709 Meyers Feb. 24, 1931 2,010,394 Herman Aug. 6, 1935 FOREIGN PATENTS Number Country Date 116,095 Germany Dec. 21,1900 144,773 .Germany Mar. 20, 1901 617,895 Germany Aug. 28,1935

Images