U.S. patent number 3,603,546 [Application Number 04/794,942] was granted by the patent office on 1971-09-07 for furniture leg attachment assembly.
This patent grant is currently assigned to Myrtle Desk Company. Invention is credited to Klaus P. Ruffert.
United States Patent |
3,603,546 |
Ruffert |
September 7, 1971 |
FURNITURE LEG ATTACHMENT ASSEMBLY
Abstract
A leg attachment assembly connecting a furniture leg to an
article of furniture for providing maximum rigidity and strength to
the leg and eliminating wobbling of the assembled furniture. A
bracket plate overlies and is secured to the top end of the leg and
underlies and is secured to the undersurface of the article of
furniture. A depending support bracket is disposed in a recess in
the inner corner of the leg and is secured thereto so that it fits
flush into the leg thereby bracing the leg. The plate is attached
to the leg and to the article of furniture by employing threaded
steel bars that are threaded into a steel locking bar mounted in
the leg and in the article of furniture respectively.
Inventors: |
Ruffert; Klaus P. (High Point,
NC) |
Assignee: |
Myrtle Desk Company
(N/A)
|
Family
ID: |
25164152 |
Appl.
No.: |
04/794,942 |
Filed: |
January 29, 1969 |
Current U.S.
Class: |
248/188; 403/262;
403/230 |
Current CPC
Class: |
F16B
12/48 (20130101); F16B 2200/403 (20180801); Y10T
403/46 (20150115); A47B 13/021 (20130101) |
Current International
Class: |
F16B
12/00 (20060101); F16B 12/48 (20060101); F16m
011/16 () |
Field of
Search: |
;248/188,188.1,151,168
;108/156 ;287/20,20.94,20.95 ;85/32K |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
798,528 |
|
Jul 1958 |
|
GB |
|
1,218,378 |
|
Dec 1959 |
|
FR |
|
586,374 |
|
Oct 1933 |
|
DD |
|
233,636 |
|
Nov 1944 |
|
CH |
|
Primary Examiner: Parsons, Jr.; Marion
Claims
What is claimed as new is as follows:
1. A leg attachment assembly for securing legs to an article of
furniture comprising a plate engaging the undersurface of the
article of furniture and being disposed in overlying engagement
with the top edge of the leg, means securing the plate to the
article of furniture, fastener means extending through apertures in
the plate for securing the plate to the top edge of the leg,
depending means on said plate engaging the inner surface of the
leg, and means securing the depending means to the inner surface of
the leg for bracing and rigidifying the leg, said depending means
including an angled bracket integral with the plate with the legs
of the angled bracket engaging adjacent surfaces of the inner
corner of the furniture leg, said means securing the plate to the
article of furniture including a plurality of screw-threaded
fasteners extending through apertures in the plate, and a locking
bar in the article of furniture threadedly engaging the fasteners
for fixedly securing the plate to the article of furniture, said
fastener means securing the plate to the leg including threaded
fasteners extending through said apertures in the plate, and
locking bar means in the leg screw-threadedly receiving the
fasteners for securing the plate to the leg.
2. The structure as defined in claim 1 wherein said plate and
depending bracket are of unitary cast material with the plate
including a projection thereon overlying the top edge of the leg
and conforming therewith.
3. In combination with a tabletop having a locking bar inserted
therein and a depending leg at the corner thereof having a locking
bar inserted therein in spaced relation to the top edge thereof, an
attaching plate underlying the tabletop, threaded fasteners
extending through the plate and threaded into the locking bar in
the tabletop, said plate including an extension overlying and
conforming with the top edge of the leg, threaded fasteners
extending through apertures in the extension and threaded into the
locking bar in the leg for rigidly securing the leg to the
tabletop, and a depending supporting bracket on the undersurface of
the plate, said bracket being right-angular in configuration, said
leg including an inner corner having a recess therein conforming
with and receiving the bracket in flush relation therewith, and
fasteners extending through the legs of the bracket into the table
leg for securing the leg rigidly in position thereby providing a
table with the legs secured thereto without the use of stretchers
or aprons extending between the upper end portions of the legs to
provide greater comfort and space for crossing and uncrossing the
legs when positioned in a chair with the person's legs occupying
the chair extending under the table.
4. The combination as defined in claim 3 wherein the plate,
extension and depending supporting bracket are of unitary one-piece
construction, the junction between the plate and bracket being
provided with a rounded, thickened gusset area reinforcing the
bracket and plate, said tabletop having a peripheral edge
terminating flush with the lower surface of the plate thereby
concealing the plate and eliminating depending projections under
the tabletop.
Description
The present invention generally relates to furniture construction
and more particularly an assembly for mounting the legs of
furniture such as a table to the article of furniture such as a
tabletop or the like.
One of the problems facing the furniture industry has been secure
attachment of supporting legs to the furniture. This is especially
a problem in table structures where the legs are relatively long
and frequently become loose and wobbly especially after extended
use. Various types of attaching brackets have been employed for
connecting the legs to the tabletop or the like with such devices
usually employing wood screws or lag bolts which depend on friction
for holding to the wood components. As the wood changes character
due to change in humidity conditions, age and the like, such
fastening devices frequently become loose thus enabling relative
movement between the legs and tabletop or other article of
furniture supported by the legs.
Accordingly, it is an object of the present invention to provide a
leg attachment assembly of a unique shape and configuration of cast
iron that underlies the tabletop and overlies the top end of the
leg and includes a depending support bracket that is received in a
recess formed in the inner corner of the leg at the upper end
thereof with the plate being secured to the tabletop and to the leg
by threaded steel bars or rods threaded into locking bars or plates
mounted in the leg and tabletop respectively with the vertical
support bracket also being secured to the leg and fitting flush
into the leg thereby bracing the leg and providing great strength
and rigidity to the table.
Another object of the present invention is to provide a leg
attachment assembly especially useful in connecting legs to a
tabletop such as in constructing tables employed in libraries and
the like so that maximum rigidity and strength is provided which
enables elimination of the usual stretcher board or apron which
extends between the upper end portions of legs of conventional
tables thereby providing additional vertical clearance so that
persons seated at the table may cross and uncross their legs
without discomfort and to provide not only a more efficient table
structure but also one which provides a neat and attractive
appearance as well as great strength and rigidity.
Still another feature of the present invention is to provide a leg
attachment assembly which is simple in construction, easy to use,
quite rigid in construction and in use, and relatively inexpensive
to manufacture.
These together with other objects and advantages which will become
subsequently apparent reside in the details of construction and
operation as more fully hereinafter described and claimed,
reference being had to the accompanying drawings forming a part
hereof, wherein like numerals refer to like parts throughout, and
in which:
FIG. 1 is a fragmental perspective view illustrating the
construction of the leg attachment assembly associated with a
library table and one corner leg thereof;
FIG. 2 is a vertical sectional view taken substantially upon a
plane passing along section line 2--2 of FIG. 1 illustrating the
association of the leg attachment assembly and the tabletop and
supporting leg;
FIG. 3 is a bottom plan sectional view of the construction of FIG.
1 illustrating the table leg in section and the orientation of the
leg attachment assembly therewith; and
FIG. 4 is a perspective view of the leg attachment assembly of the
present invention.
Referring now specifically to the drawings, the leg attachment
assembly of the present invention is generally designated by the
numeral 10 and is illustrated in association with a tabletop 12 and
a table leg 14. While the invention is disclosed specifically with
a tabletop structure and particularly a library table, it is
pointed out that this attachment may be used with almost any other
type of table or other articles of furniture. As illustrated in
FIG. 1, by employing the present invention, the usual stretcher
panels or aprons which extend between the upper end portions of the
adjacent legs on a table or the like, such as those used in
libraries, have been eliminated thus providing full use of the
space from the bottom edge of the tabletop to the floor so that
persons using the table may cross and uncross their legs and be
more comfortable while employing the table while studying or for
other purposes.
The table leg 14 is square in cross-sectional configuration and
includes a flat upper end surface. The tabletop 12 has a planar
lower surface in parallel relation to the upper end surface of the
leg 14. The leg attachment assembly includes a flat plate 16 of
generally square or rectangular configuration with one corner of
the plate 16 including a lateral extension 18 which terminates in a
generally square projection 20 which has the peripheral edges and
the apex thereof corresponding generally with the periphery of the
leg 14. The undersurface of the plate is provided with a depending
support bracket 22 which includes a pair of legs or plates 24 and
26 which are at right angles to each other and correspond with and
engage the inner corner surface of the leg 14. Where the legs 24
and 26 are integral with the undersurface of the plate 16, there is
a rounded thickened gusset area 28. In construction, the plate 16
and the bracket 22 are of one-piece or integral construction and
preferably is a cast iron material such as ASTM--48 Class 30 to
provide substantial rigidity.
The plate 16 is provided with five apertures 30 therein which are
countersunk from the lower surface of the plate 16 and are oriented
adjacent each corner of the plate 16 and on either side of the
depending support bracket 22 as best illustrated in FIG. 3 and 4.
The generally square projection 20 is also provided with apertures
32 and four such apertures 32 are provided with the apertures being
countersunk from the top surface of the projection 20 with the
apertures 32 being oriented in the central area of the projection
20 as illustrated in FIGS. 3 and 4. Also, each of the legs 24 and
26 is provided with an aperture 34 adjacent the lower edge thereof
with the apertures being vertically staggered and countersunk from
the outer surface of the legs 24 and 26 respectively.
Screw-threaded rods or fasteners 36 having tapering enlarged heads
provided with kerfs thereacross are received in the apertures 30
and similar fasteners 38 are received in the apertures 32.
Screw-threaded fasteners 40 of a similar type are received in the
apertures 34 in the support bracket 22. As illustrated in FIGS.
1-3, the support bracket 22 is received in a correspondingly shaped
recess 42 which has been routed into the inner corner surface of
the leg 14 so that the support bracket 22 conforms with the shape
of the recess and fits flush with the outer surface of the leg up
to the thickened portion 28 as illustrated in the drawings.
The threaded rods 36 are received in threaded apertures in a
locking bar 44 disposed in the tabletop 12 and the fasteners 38 are
screw-threaded into a similar locking bar 46 disposed in the legs
14 while the fasteners 40 may conveniently be conventional wood
screws with the heads of all of the fasteners being flush with the
surfaces when properly installed.
While dimensions of the plate and depending bracket may vary, it
has been found that with the depending bracket 22 approximately 2
inches in length, the leg will be materially rigidified. Also, the
metal bar 46 is mounted in holes located in the center of the top,
that is, between the top and bottom surface thereof and in the leg
approximately one and one-half inches from the top edge of the leg.
For example, two locking bars would be provided in the leg with
each locking bar receiving two of the threaded machine bolts, rods
or the like. The locking bars or rods 44 and 46 would be concealed
in a conventional manner such as by a veneer or the like. The edges
of the square projection 20 may be flush with the surface of the
same or contrasting appearance characteristics. Also, a single
carved reveal line 48 may be provided along the edge of the top and
which may extend down the surfaces of the leg to accentuate the
total impression of architectural simplicity. With the depending
supporting bracket and the rigid attachment by using the mounting
bars and machine bolts rather than wood screws or lag bolts, the
leg is rigidly attached to the tabletop with the total vertical
dimension of the tabletop being only that occupied by the tabletop
itself.
The foregoing is considered as illustrative only of the principles
of the invention. Further, since numerous modifications and changes
will readily occur to those skilled in the art, it is not desired
to limit the invention to the exact construction and operation
shown and described, and accordingly all suitable modifications and
equivalents may be resorted to, falling within the scope of the
invention.
* * * * *