CA2070350A1 - Leg attachment - Google Patents
Leg attachmentInfo
- Publication number
- CA2070350A1 CA2070350A1 CA 2070350 CA2070350A CA2070350A1 CA 2070350 A1 CA2070350 A1 CA 2070350A1 CA 2070350 CA2070350 CA 2070350 CA 2070350 A CA2070350 A CA 2070350A CA 2070350 A1 CA2070350 A1 CA 2070350A1
- Authority
- CA
- Canada
- Prior art keywords
- leg
- plate
- attachment
- screws
- table top
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Landscapes
- Tables And Desks Characterized By Structural Shape (AREA)
- Furniture Connections (AREA)
Abstract
ABSTRACT
An attachment for securing a leg to an article of furniture, such as a table, eliminates the use of the costly sub-frame that would normally be required. The attachment utilizes a rigid large flat steel plate that is connected to the upper end of the leg by machine screws passing through holes in the plate and spaced axially extending bores in the table leg, these bores leading to a transverse bore in which is positioned a cylindrical dowel pin. The ends of the machine screws are threaded into the dowel pin and the screws can then be tightened to clamp the plate to the leg. The plate is of very much greater area than the leg and has holes around its perimeter through which wood screws can be passed to attach the plate to the underside of a table or the like.
An attachment for securing a leg to an article of furniture, such as a table, eliminates the use of the costly sub-frame that would normally be required. The attachment utilizes a rigid large flat steel plate that is connected to the upper end of the leg by machine screws passing through holes in the plate and spaced axially extending bores in the table leg, these bores leading to a transverse bore in which is positioned a cylindrical dowel pin. The ends of the machine screws are threaded into the dowel pin and the screws can then be tightened to clamp the plate to the leg. The plate is of very much greater area than the leg and has holes around its perimeter through which wood screws can be passed to attach the plate to the underside of a table or the like.
Description
2~7~3~0 The present invention relates to a new or lmproved attachment for securing a leg to an article of furniture such as a table top or the like.
Hitherto, to achieve the desired degree of rigidity in attaching a leg to a table, it has usually been necessary to resort to the provision of a costly sub-frame on the underside of the table and into which the upper part of the leg was braced.
The present invention aims to provide an improved method of mounting such a leg which avoids the use of the sub-frame.
The invention accordingly provides an attachment for securing an elongate leg to a table top or the like, said attachment comprising: a rigid generally flat mounting plate having an area that is many times greater than the cross sectional area of the leg, the plate having a peripheral region that is configured to facilitate rigid attachment of the plate to the underside of the table top; threaded fastener means for forming a rigid connection between the plate and the top of the leg, said fastener means comprising at least two screws each insertable through a corresponding mounting hole in the plate to extend downwardly therefrom, and a complementary nut member that is received in a recess in said leg that is spaced below the upper end thereof, each said screw being insertable throuyh a respective longitudinal passage opening from the top of said leg and being rotatable relati.ve to said plate and said leg to engage said nut, and upon tightening to clamp said plate securely to the top of said leg, whereupon attachment of the plate to the underside of the table top is effective to provide a secure mounting of the leg 207~3~0 to the table top.
The mounting plate is preferably a square steel plate having an area that is of the order of ten times greater than the cross-section of the leg. Preferably there are a series of mounting holes ln the plate so that the leg can be attached to the plate at various locations, e.g. centrally, or adjacent one corner, or midway along one edge of the mounting plate.
The mounting holes in the plate are preferably conf~gured to receive the heads of countersunk machine screws that extend into the passages in the upper end of the leg and engage the nut. The nut is preferably in the form of a transverse dowel rod received in a horizontal blind bore or through bore in the table leg. Means may be provided to assist orien~ation of the dowel to reglster its threaded holes for engagement by the machine screws. For example the dowel and the bore may both be provided with complementary flat surfaces. -The invention will further be described, hy way of example only, with reference to the accompanying drawings wherein:
Figure 1 is a fragmentary side view showing a square leg attached to the corner of a table;
Figure 2 is an exploded pictorial view showing the table leg, mounting plate and attachment screws;
Figure 3 is a pictorial view of the attachment plate showlng alternative mountlng posltlons for the table leg;
Figure 4 is an enlarged partly sectioned view illustrating a leg attached along one side of a table top;
Figure 5 is a sectional view taken on the line 5-5 in 2~7~3~V
Figure 4; and Figure 6 is a plan view of the mounting plate indicating a table leg of alternate profile.
As seen in Figure 1, an elongate leg 1 of square cross-section is secured to the underside of a corner of a table top 2, both the leg and the table top being of suitable material, e.g.
wood. Attachment means for securing the leg to the table top is provided in the form of a rigid s~uare steel mounting plate 3 having a series of pairs of countersunk mounting holes 4 arranged at different locations therein, as well as a further plurality of screw holes ~ arranged in its peripheral region, e.g. as shown at the corners thereof. The mounting plate is of suitable rigid material, e.g. steel and has a large area, e.g. ten times the area of the leg cross-section.
The table leg 1 to be attached is of generally conventional form, being for example of square profile and formed in wood. The upper end of the leg is formed to receive the attachment means by the provision of two diagonally spaced vertical passages 7 opening from the upper surface 8 of the leg, these passages opening into a large transverse horizontal bore 9 spaced below the upper end of the table leg. As shown, the bore 9 is a blind bore opening from one corner edge of the leg and extending diagonally therethrough (see Figure 5). The bore is adapted to receive a cylindrical steel dowel rod 10 having adjacent to the opposite ends thereof two transverse threaded bores 11, these bores being at a spacing corresponding to that of the vertical passages 7.
2 9 7 1~
For attachment of the mountlng plate 3 to the top end of the leg 1, the leg is positioned with the passages 7 in alignment with a selected pair of countersunk holes 4 in the mounting plate 3. The dowel rod 10 is inserted in the horizontal bore 9 and oriented so that the threaded bores register with the passages 7.
Thereafter a pair of countersunk head machine screws 15 are passed through the countersunk holes 4 and the passages 7, and brought into threaded engagement with the bores 11 in the dowel rod. It will be seen that tightening of the screws 15 into the dowel rod will effectively clamp the plate 3 against the upper end of the leg 1. Thereafter, the mounting plate with the leg attached can be secured to the underside of the table top 2 by wood screws or the like 16 Figure 4 passed through the peripheral holes 5 in the plate and engaged in~o the material of the table top. This therefore provides an effective means of securely attaching the leg to the table top, without the need for a costly sub-frame.
For attachment of a leg as shown having a square cross-section of 3 1/4 inches, a pair of 5/16 inch machine screws of suitable length having a flat countersunk head, are employed. The steel mounting plate 3 has an area that is very much greater than the cross-section of the leg, as shown havin~ a size 9 inches by 9 inches.
As indicated ln Figures 2, 3 and 6, the mounting plate has countersunk holes 4 at a number of different locations to facilitate varlous placements of the leg 1 relative ~o the plate 3. The leg of course may be of various shapes, e.g. square as shown in Figures 1 to 5 or round as indicated in Figure 6.
2~7$~
The countersunk holes 4 are located in the plate 3 in such a way as to allow placement of the leg at the corners or along the edges of a table top, or in the middle thereof. The legs can be recessed from the edges, or indeed can be projected laterally outwardly with respect to the edges of the table. In the latter event, the mounting plate might be modified in shape so that the only portion thereof that projects beyond the edge of the table is the portion that overlies the top end of the leg. In this arrangement it would not be necessary for the heads of the machine screws 15 to be countersunk. However a decorative cap would be provided to cover the heads of these screws and the projecting portion of the mounting plate. The attachment system described provides a strony means of mounting a leg to an article of furniture such as a table top, and allows for multiple configurations of leg locations, enhancing the range of flexibility of the product.
It will be realized that the upper end of the leg 4 can be configured very easily to accept the described mounting means.
All that is necessary is the provision of three bored holes 7 and 9. The bore 9 may be a through bore or a blind bore. Upon installation, the open ends of the bore 9 will be plugged.
The nut member, described above as the dowel rod 10, by means of which the machine screws clamp the plate 3 to the leg 1 may take various forms. Instead of being round as shown, the dowel rod and its bore may be provided with means to ensure proper registration of the threaded bores 11 with the passages 7, e.g. by having cooperating flat surfaces or otherwise.
2~7~3~
Varlous other modifications will occur to those skilled in the art, all such being intended to be encompassed wi~hin the scope of the following claims.
Hitherto, to achieve the desired degree of rigidity in attaching a leg to a table, it has usually been necessary to resort to the provision of a costly sub-frame on the underside of the table and into which the upper part of the leg was braced.
The present invention aims to provide an improved method of mounting such a leg which avoids the use of the sub-frame.
The invention accordingly provides an attachment for securing an elongate leg to a table top or the like, said attachment comprising: a rigid generally flat mounting plate having an area that is many times greater than the cross sectional area of the leg, the plate having a peripheral region that is configured to facilitate rigid attachment of the plate to the underside of the table top; threaded fastener means for forming a rigid connection between the plate and the top of the leg, said fastener means comprising at least two screws each insertable through a corresponding mounting hole in the plate to extend downwardly therefrom, and a complementary nut member that is received in a recess in said leg that is spaced below the upper end thereof, each said screw being insertable throuyh a respective longitudinal passage opening from the top of said leg and being rotatable relati.ve to said plate and said leg to engage said nut, and upon tightening to clamp said plate securely to the top of said leg, whereupon attachment of the plate to the underside of the table top is effective to provide a secure mounting of the leg 207~3~0 to the table top.
The mounting plate is preferably a square steel plate having an area that is of the order of ten times greater than the cross-section of the leg. Preferably there are a series of mounting holes ln the plate so that the leg can be attached to the plate at various locations, e.g. centrally, or adjacent one corner, or midway along one edge of the mounting plate.
The mounting holes in the plate are preferably conf~gured to receive the heads of countersunk machine screws that extend into the passages in the upper end of the leg and engage the nut. The nut is preferably in the form of a transverse dowel rod received in a horizontal blind bore or through bore in the table leg. Means may be provided to assist orien~ation of the dowel to reglster its threaded holes for engagement by the machine screws. For example the dowel and the bore may both be provided with complementary flat surfaces. -The invention will further be described, hy way of example only, with reference to the accompanying drawings wherein:
Figure 1 is a fragmentary side view showing a square leg attached to the corner of a table;
Figure 2 is an exploded pictorial view showing the table leg, mounting plate and attachment screws;
Figure 3 is a pictorial view of the attachment plate showlng alternative mountlng posltlons for the table leg;
Figure 4 is an enlarged partly sectioned view illustrating a leg attached along one side of a table top;
Figure 5 is a sectional view taken on the line 5-5 in 2~7~3~V
Figure 4; and Figure 6 is a plan view of the mounting plate indicating a table leg of alternate profile.
As seen in Figure 1, an elongate leg 1 of square cross-section is secured to the underside of a corner of a table top 2, both the leg and the table top being of suitable material, e.g.
wood. Attachment means for securing the leg to the table top is provided in the form of a rigid s~uare steel mounting plate 3 having a series of pairs of countersunk mounting holes 4 arranged at different locations therein, as well as a further plurality of screw holes ~ arranged in its peripheral region, e.g. as shown at the corners thereof. The mounting plate is of suitable rigid material, e.g. steel and has a large area, e.g. ten times the area of the leg cross-section.
The table leg 1 to be attached is of generally conventional form, being for example of square profile and formed in wood. The upper end of the leg is formed to receive the attachment means by the provision of two diagonally spaced vertical passages 7 opening from the upper surface 8 of the leg, these passages opening into a large transverse horizontal bore 9 spaced below the upper end of the table leg. As shown, the bore 9 is a blind bore opening from one corner edge of the leg and extending diagonally therethrough (see Figure 5). The bore is adapted to receive a cylindrical steel dowel rod 10 having adjacent to the opposite ends thereof two transverse threaded bores 11, these bores being at a spacing corresponding to that of the vertical passages 7.
2 9 7 1~
For attachment of the mountlng plate 3 to the top end of the leg 1, the leg is positioned with the passages 7 in alignment with a selected pair of countersunk holes 4 in the mounting plate 3. The dowel rod 10 is inserted in the horizontal bore 9 and oriented so that the threaded bores register with the passages 7.
Thereafter a pair of countersunk head machine screws 15 are passed through the countersunk holes 4 and the passages 7, and brought into threaded engagement with the bores 11 in the dowel rod. It will be seen that tightening of the screws 15 into the dowel rod will effectively clamp the plate 3 against the upper end of the leg 1. Thereafter, the mounting plate with the leg attached can be secured to the underside of the table top 2 by wood screws or the like 16 Figure 4 passed through the peripheral holes 5 in the plate and engaged in~o the material of the table top. This therefore provides an effective means of securely attaching the leg to the table top, without the need for a costly sub-frame.
For attachment of a leg as shown having a square cross-section of 3 1/4 inches, a pair of 5/16 inch machine screws of suitable length having a flat countersunk head, are employed. The steel mounting plate 3 has an area that is very much greater than the cross-section of the leg, as shown havin~ a size 9 inches by 9 inches.
As indicated ln Figures 2, 3 and 6, the mounting plate has countersunk holes 4 at a number of different locations to facilitate varlous placements of the leg 1 relative ~o the plate 3. The leg of course may be of various shapes, e.g. square as shown in Figures 1 to 5 or round as indicated in Figure 6.
2~7$~
The countersunk holes 4 are located in the plate 3 in such a way as to allow placement of the leg at the corners or along the edges of a table top, or in the middle thereof. The legs can be recessed from the edges, or indeed can be projected laterally outwardly with respect to the edges of the table. In the latter event, the mounting plate might be modified in shape so that the only portion thereof that projects beyond the edge of the table is the portion that overlies the top end of the leg. In this arrangement it would not be necessary for the heads of the machine screws 15 to be countersunk. However a decorative cap would be provided to cover the heads of these screws and the projecting portion of the mounting plate. The attachment system described provides a strony means of mounting a leg to an article of furniture such as a table top, and allows for multiple configurations of leg locations, enhancing the range of flexibility of the product.
It will be realized that the upper end of the leg 4 can be configured very easily to accept the described mounting means.
All that is necessary is the provision of three bored holes 7 and 9. The bore 9 may be a through bore or a blind bore. Upon installation, the open ends of the bore 9 will be plugged.
The nut member, described above as the dowel rod 10, by means of which the machine screws clamp the plate 3 to the leg 1 may take various forms. Instead of being round as shown, the dowel rod and its bore may be provided with means to ensure proper registration of the threaded bores 11 with the passages 7, e.g. by having cooperating flat surfaces or otherwise.
2~7~3~
Varlous other modifications will occur to those skilled in the art, all such being intended to be encompassed wi~hin the scope of the following claims.
Claims (9)
1. An attachment for securing an elongate leg to a table top or the like, said attachment comprising:
a rigid generally flat mounting plate having an area that is many times greater than the cross sectional area of the leg, the plate having a peripheral region that is configured to facilitate rigid attachment of the plate to the underside of the table top;
threaded fastener means for forming a rigid connection between the plate and the top of the leg, said fastener means comprising at least two screws each insertable through a corresponding mounting hole in the plate to extend downwardly therefrom, and a complementary nut member that is received in a recess in said leg that is spaced below the upper end thereof, each said screw being insertable through a respective longitudinal passage opening from the top of said leg and being rotatable relative to said plate and said leg to engage said nut, and upon tightening to clamp said plate securely to the top of said leg, whereupon attachment of the plate to the underside of the table top is effective to provide a secure mounting of the leg to the table top.
a rigid generally flat mounting plate having an area that is many times greater than the cross sectional area of the leg, the plate having a peripheral region that is configured to facilitate rigid attachment of the plate to the underside of the table top;
threaded fastener means for forming a rigid connection between the plate and the top of the leg, said fastener means comprising at least two screws each insertable through a corresponding mounting hole in the plate to extend downwardly therefrom, and a complementary nut member that is received in a recess in said leg that is spaced below the upper end thereof, each said screw being insertable through a respective longitudinal passage opening from the top of said leg and being rotatable relative to said plate and said leg to engage said nut, and upon tightening to clamp said plate securely to the top of said leg, whereupon attachment of the plate to the underside of the table top is effective to provide a secure mounting of the leg to the table top.
2. An attachment as claimed in claim 1 wherein said plate has a width dimension that is of the same order as its length dimension, said screws each being engageable in a common nut member.
3. An attachment as claimed in claim 2 wherein said nut member is positioned in a transverse bore in the upper region of said leg and comprises a pin having spaced screw-threaded bores for engagement by respective ones of said screws.
4. An attachment as claimed in claim 3 wherein said pin is a cylindrical dowel and said screws are machine screws.
5. An attachment as claimed in claim 1 wherein each said screw is a machine screw having a countersunk head, said mounting holes being similarly countersunk to receive said head.
6. An attachment means as claimed in claim 1 wherein there are a plurality of mounting holes in said plate to enable attachment of said leg to different selected regions of said plate.
7. An attachment as claimed in claim 1 wherein said plate is generally of oblong shape and is configured for attachment to the underside of the table top by the provision of through holes in the corner regions of the plate to receive fasteners engageable with the underside of the table top.
8. An attachment as claimed in claim 1 wherein said leg is of rectangular cross section, the two longitudinal passages extending from the upper end thereof being arranged diagonally with respect to each other, said nut member comprising a rod positioned in a transverse through hole in the leg, said rod having threaded bores at a spacing corresponding to that of said passages for engagement with respective screws extended through two said mounting holes in the plate.
9. An attachment as claimed in claim 1 wherein said mounting plate is a steel plate of oblong outline, said fastener means comprises two machine screws extending through respective mounting holes, said machine screws having countersunk heads, and being engageable with threaded holes in a nut member in the form of a dowel rod extending through a transverse aperture in the upper region of the leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2070350 CA2070350A1 (en) | 1992-06-03 | 1992-06-03 | Leg attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2070350 CA2070350A1 (en) | 1992-06-03 | 1992-06-03 | Leg attachment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2070350A1 true CA2070350A1 (en) | 1993-12-04 |
Family
ID=4149963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2070350 Abandoned CA2070350A1 (en) | 1992-06-03 | 1992-06-03 | Leg attachment |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2070350A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2508099A1 (en) * | 2011-04-08 | 2012-10-10 | David Shemmer | Connection of a wooden board with one or more wooden stands and object produced using the connection |
-
1992
- 1992-06-03 CA CA 2070350 patent/CA2070350A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2508099A1 (en) * | 2011-04-08 | 2012-10-10 | David Shemmer | Connection of a wooden board with one or more wooden stands and object produced using the connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |