CA1298189C - Furniture frame construction - Google Patents
Furniture frame constructionInfo
- Publication number
- CA1298189C CA1298189C CA 590116 CA590116A CA1298189C CA 1298189 C CA1298189 C CA 1298189C CA 590116 CA590116 CA 590116 CA 590116 A CA590116 A CA 590116A CA 1298189 C CA1298189 C CA 1298189C
- Authority
- CA
- Canada
- Prior art keywords
- panels
- frame construction
- panel
- series
- teeth
- 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.)
- Expired
Links
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 239000002023 wood Substances 0.000 claims abstract description 23
- 239000011120 plywood Substances 0.000 claims abstract description 8
- 239000011121 hardwood Substances 0.000 claims description 6
- 241000168036 Populus alba Species 0.000 claims description 3
- 241000183024 Populus tremula Species 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000002776 aggregation Effects 0.000 claims description 2
- 238000004220 aggregation Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 abstract description 3
- 238000007796 conventional method Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C5/00—Chairs of special materials
- A47C5/14—Chairs of special materials characterised by the use of laminated wood
Landscapes
- Joining Of Corner Units Of Frames Or Wings (AREA)
Abstract
ABSTRACT
A furniture frame construction utilizes a series of panels of multilayered laminated wood sheet, such as oriented strand board or plywood. Connecting pairs of the panels have interlocking teeth on their connecting edge. The frame construction does not utilize the dowel joints found in conventional furniture frames, thus requiring a lower level of skill for assembly. Automatic milling machines can produce the panels quickly and efficiently with high precision tolerances.
Because the connection between the panels extends along an edge rather than being concentrated at a joint, the frame tends to be stronger than a frame built by conventional methods.
A furniture frame construction utilizes a series of panels of multilayered laminated wood sheet, such as oriented strand board or plywood. Connecting pairs of the panels have interlocking teeth on their connecting edge. The frame construction does not utilize the dowel joints found in conventional furniture frames, thus requiring a lower level of skill for assembly. Automatic milling machines can produce the panels quickly and efficiently with high precision tolerances.
Because the connection between the panels extends along an edge rather than being concentrated at a joint, the frame tends to be stronger than a frame built by conventional methods.
Description
12~31B~
~ . ~
FURNITURE FR~ME CONSTRUCTION
The invention relates to a furniture frame construction, and more particularly, to a frame construction which utilizes a series of panels of multilayered laminated wood sheet and in which connecting pairs of the panels have an interlocking arrangement on their connecting edge.
Frames for furniture have traditionally been built from boards secured together by dowel joints, glue and screws. The boards must be carefully sized and aligned before being secured together by persons skilled in furniture making. Because the boards are connected together only at points proximate of their ends, ~he connections at those points must exhibit strong tensile and shear strength. Dowel joints, which have been used to provide the required alignment and strength for the connection points, have disadvantages. Such joints require the careful boring of holes for pin placement in the boards being connected, which requires careful workmanship during assembly. A further disadvantage is that dowel pins may become loose during use and reduce the rigidity of the furniture.
The frame construction of the invention utilizes two advances in wood product technology, and takes advantage of the compressive strength of wood. Large automatic milling macnines, capable of cutting laminated wood sheets into computer-defined 2~ shapes at high speed, have become available. The panels produced by these machines have a consistently high tolerance. By careful planning, a single piece of standard-sized laminated wood sheet may be cut to form all of the panels required in forming a piece of furniture. In this context, laminated wood sheet refers to the product known as plywood and also to a cheaper product developed recently. This other product, which represents the second advance in wood product technology, is oriented strand board (O.S.B.) which is formed from multiple layers of machined strands of hardwood (either white poplar or aspen). Each strand of this material has a definite length-to-width ratio (approximately equal to four). Since the wood grain runs in the major direction in every strand, the strands can be engineered into a panel which fully optimizes the fibre strength. The strands, which are 9818~
aligned so that the long axis of each strand is parallel to the length of the panel in the faces and alternate layers and is perpendicular to the length of the panel in the other layers, are bound together by phenolic resin. This fibre overlapping at right angles is the same principle as the grain overlap found in plywood.
In general terms the invention is a furniture frame construction utilizing a series of connected contoured planar panels that together define the general shape of a piece of furniture, each of the panels being formed out of multilayered laminated wood sheet. Pairs of connected panels that extend perpendicular to each other are connected together by a series of interlocking teeth on their connecting edge. The series of teeth extend substantially the length of the connecting edge, with one panel of each pair of panels having one more tooth on its connecting edge than the number of teeth on the connecting edge of the other panel. Each of the teeth on each of the connecting edges has a length equal to at least approximately ten per cent of the length of the connecting edge. The frame construction also comprises a series of support members connected to the panels for providing rigidity to the frame construction.
The wood sheet may be formed from multiple layers of machined strands of plywood or hardwood. The hardwood may be white poplar wood or aspen wood. All of the planar panels for a piece of furniture may be cut from a single standard-sized piece of the wood sheet. One or more of the panels may be constructed from an aggregation of smaller panel sections.
In one particular form of the invention the panels of the frame construction are formed out of multiple layers of machined strands of hardwood and the frame construction also comprises a series of wooden support members. The frame construction comprises a front panel, a pair of side panels, and a pair of back panels. Each side panel is oriented perpendicular to the front panel and to the back panels. Each side panel is connected to a respective end of the front panel and to one of the back panels by a series of interlocking teeth formed in the connecting edges of the panels. Each pair of connecting panels has a series of teeth positioned in a complementary manner such ~ 12~8~l89 that each tooth on the one panel enters a cavity on the other panel. The series of teeth extend substantially the length of each connecting edge. One panel of each pair of connecting panels has one more tooth on its connecting edge than the number of teeth on the connecting edge of the other panel. Each of the teeth on each of the connecting edges has a length equal to at least approximately ten per cent of the length of the connecting edge.
The support membexs are connected to the panels to provide rigidity to the frame construction.
The invention will next be more specifically described in terms of a preferred embodiment utilizing the accompanying drawings, in which:
Figure 1 is a perspective view of the front of a furniture frame utiliziny dowel joints known in the art;
Figure 2 is a perspective view of the front of a furniture frame utili2ing the frame construction of the invention;
and, Figure 3 is a perspective view of the back of the furniture frame of Figure 2.
~ wooden furniture frame is generally designated as 9 in Figure 1. Frame 9 represents the skeleton of a sofa or similar piece of furniture. The frame will be modified by the addition of springs and upholstery (not shown) to form the particular piece of furniture. The frame is created by connecting together a series of wooden boards 1~. In the type of frame construction shown in Figure 1 holes 11 have been drilled in the wooden boards 10; the diameter of those holes matches the diameter of wooden dowel pins 12 to be inserted. The pins 12 and surfaces to be abutted are coated with glue. Additionally, nails 13 may be driven into wooden boards 10 in a direction parallel to dowel pins 12 to provide additional rigidity; screws might alternately be used.
A furniture frame built using the construction of the invention is shown in Figures 2 and 3. Figure 2 depicts a front view of that frame, and Figure 3 depicts a back view of the same frame. The particular frame shown has five major panels formed out of a material generically called Oriented Strand Board (O.S.B.). One brand of this product is known as STURDI-WOOD*.
O.S.B. is a product similar to plywood, but is a more recent *Trade Mark ~2~ !3189 development and is cheaper. O.S.B. can achieve higher strengths than those found in most plywoods. The five major panels of O.S.B. used in the frame are the two back panels 1~ and 17, the two side panels 18 and l9, and the front panel 20. The panels are formed from 3/~-inch thick O.S.B. Side panel 18 may be created from a single piece of O.S.B. or may be created by abutting a generally rectangular O.S.B. piece 21 with a generally triangular O.S.B. piece 22; side panel 19 may be formed from the connection of two similar pieces. Similarly, front panel 70 may be created from a single piece of O.S.B. or may be created by abutting a pair of arcuate end pieces 23 to a generally rectangular piece 24.
The back of the furniture frame is defined by a pair of transverse wooden beams 25 and 26, respectively positioned above and below the back panels 16 and 17. Beams 25 and 26 are secured to the back panels 16 and 17 by a series of staples 27. The two lateral ends of the furniture frame back each has a pair of teeth, the pair of teeth on the one end being designated as 28 and 29 in Figure 3. The two side panels 18 and 19 each have three teeth formed in their one end for engaging the back of the furniture frame; for instance, side panel 18 has teeth 30, 31 and 32 formed in its one end. With reference to Figure 2, a similar interlocking arrangement is used to connect the side panels 18 and 19 to the front panel 20. For instance, side panel 18 has a tooth 35 on its other end interlocked between a pair of teeth 36 and 37 in front panel 20. The furniture frame is braced by a series of wooden brace members generally designated 38 that extend parallel to the front panel 20, and by another series of wooden brace members generally designated 39 that connect the back of the frame to front panel 200 A still further series of wooden brace members generally designated 40 are utilized to provide support to the back of the furniture frame, as illustrated in Figures 2 and 3.
Because O.S.B. can be cut to precise shapes by automatic milling machines, construction of furniture frames utilizing O.S.B. is not as dependent on the level of workmanship required for assembly as is the case with conventional dowel-joint furniture. The precise tolerances on the panels cut by these machines allow the teeth in the panels to interlock very tightly.
Nails are used to secure the series of complementary teeth on each ~2~ 89 \
connecting edge together; those nails are generally designated as 45 in Figure 3. To provide greater strength to the furniture, glue may be applied to the surface of the teeth before they are connected together.
Although the foregoiny description has related to the use of O.S.B., the panels of the furniture frame could also be created from plywood. Although only one type of furniture frame has been described, it should be obvious to those skilled in the art that the frame construction of the invention may be applied in forming other types of furniture frames.
. ' . .... ~,.
~ . ~
FURNITURE FR~ME CONSTRUCTION
The invention relates to a furniture frame construction, and more particularly, to a frame construction which utilizes a series of panels of multilayered laminated wood sheet and in which connecting pairs of the panels have an interlocking arrangement on their connecting edge.
Frames for furniture have traditionally been built from boards secured together by dowel joints, glue and screws. The boards must be carefully sized and aligned before being secured together by persons skilled in furniture making. Because the boards are connected together only at points proximate of their ends, ~he connections at those points must exhibit strong tensile and shear strength. Dowel joints, which have been used to provide the required alignment and strength for the connection points, have disadvantages. Such joints require the careful boring of holes for pin placement in the boards being connected, which requires careful workmanship during assembly. A further disadvantage is that dowel pins may become loose during use and reduce the rigidity of the furniture.
The frame construction of the invention utilizes two advances in wood product technology, and takes advantage of the compressive strength of wood. Large automatic milling macnines, capable of cutting laminated wood sheets into computer-defined 2~ shapes at high speed, have become available. The panels produced by these machines have a consistently high tolerance. By careful planning, a single piece of standard-sized laminated wood sheet may be cut to form all of the panels required in forming a piece of furniture. In this context, laminated wood sheet refers to the product known as plywood and also to a cheaper product developed recently. This other product, which represents the second advance in wood product technology, is oriented strand board (O.S.B.) which is formed from multiple layers of machined strands of hardwood (either white poplar or aspen). Each strand of this material has a definite length-to-width ratio (approximately equal to four). Since the wood grain runs in the major direction in every strand, the strands can be engineered into a panel which fully optimizes the fibre strength. The strands, which are 9818~
aligned so that the long axis of each strand is parallel to the length of the panel in the faces and alternate layers and is perpendicular to the length of the panel in the other layers, are bound together by phenolic resin. This fibre overlapping at right angles is the same principle as the grain overlap found in plywood.
In general terms the invention is a furniture frame construction utilizing a series of connected contoured planar panels that together define the general shape of a piece of furniture, each of the panels being formed out of multilayered laminated wood sheet. Pairs of connected panels that extend perpendicular to each other are connected together by a series of interlocking teeth on their connecting edge. The series of teeth extend substantially the length of the connecting edge, with one panel of each pair of panels having one more tooth on its connecting edge than the number of teeth on the connecting edge of the other panel. Each of the teeth on each of the connecting edges has a length equal to at least approximately ten per cent of the length of the connecting edge. The frame construction also comprises a series of support members connected to the panels for providing rigidity to the frame construction.
The wood sheet may be formed from multiple layers of machined strands of plywood or hardwood. The hardwood may be white poplar wood or aspen wood. All of the planar panels for a piece of furniture may be cut from a single standard-sized piece of the wood sheet. One or more of the panels may be constructed from an aggregation of smaller panel sections.
In one particular form of the invention the panels of the frame construction are formed out of multiple layers of machined strands of hardwood and the frame construction also comprises a series of wooden support members. The frame construction comprises a front panel, a pair of side panels, and a pair of back panels. Each side panel is oriented perpendicular to the front panel and to the back panels. Each side panel is connected to a respective end of the front panel and to one of the back panels by a series of interlocking teeth formed in the connecting edges of the panels. Each pair of connecting panels has a series of teeth positioned in a complementary manner such ~ 12~8~l89 that each tooth on the one panel enters a cavity on the other panel. The series of teeth extend substantially the length of each connecting edge. One panel of each pair of connecting panels has one more tooth on its connecting edge than the number of teeth on the connecting edge of the other panel. Each of the teeth on each of the connecting edges has a length equal to at least approximately ten per cent of the length of the connecting edge.
The support membexs are connected to the panels to provide rigidity to the frame construction.
The invention will next be more specifically described in terms of a preferred embodiment utilizing the accompanying drawings, in which:
Figure 1 is a perspective view of the front of a furniture frame utiliziny dowel joints known in the art;
Figure 2 is a perspective view of the front of a furniture frame utili2ing the frame construction of the invention;
and, Figure 3 is a perspective view of the back of the furniture frame of Figure 2.
~ wooden furniture frame is generally designated as 9 in Figure 1. Frame 9 represents the skeleton of a sofa or similar piece of furniture. The frame will be modified by the addition of springs and upholstery (not shown) to form the particular piece of furniture. The frame is created by connecting together a series of wooden boards 1~. In the type of frame construction shown in Figure 1 holes 11 have been drilled in the wooden boards 10; the diameter of those holes matches the diameter of wooden dowel pins 12 to be inserted. The pins 12 and surfaces to be abutted are coated with glue. Additionally, nails 13 may be driven into wooden boards 10 in a direction parallel to dowel pins 12 to provide additional rigidity; screws might alternately be used.
A furniture frame built using the construction of the invention is shown in Figures 2 and 3. Figure 2 depicts a front view of that frame, and Figure 3 depicts a back view of the same frame. The particular frame shown has five major panels formed out of a material generically called Oriented Strand Board (O.S.B.). One brand of this product is known as STURDI-WOOD*.
O.S.B. is a product similar to plywood, but is a more recent *Trade Mark ~2~ !3189 development and is cheaper. O.S.B. can achieve higher strengths than those found in most plywoods. The five major panels of O.S.B. used in the frame are the two back panels 1~ and 17, the two side panels 18 and l9, and the front panel 20. The panels are formed from 3/~-inch thick O.S.B. Side panel 18 may be created from a single piece of O.S.B. or may be created by abutting a generally rectangular O.S.B. piece 21 with a generally triangular O.S.B. piece 22; side panel 19 may be formed from the connection of two similar pieces. Similarly, front panel 70 may be created from a single piece of O.S.B. or may be created by abutting a pair of arcuate end pieces 23 to a generally rectangular piece 24.
The back of the furniture frame is defined by a pair of transverse wooden beams 25 and 26, respectively positioned above and below the back panels 16 and 17. Beams 25 and 26 are secured to the back panels 16 and 17 by a series of staples 27. The two lateral ends of the furniture frame back each has a pair of teeth, the pair of teeth on the one end being designated as 28 and 29 in Figure 3. The two side panels 18 and 19 each have three teeth formed in their one end for engaging the back of the furniture frame; for instance, side panel 18 has teeth 30, 31 and 32 formed in its one end. With reference to Figure 2, a similar interlocking arrangement is used to connect the side panels 18 and 19 to the front panel 20. For instance, side panel 18 has a tooth 35 on its other end interlocked between a pair of teeth 36 and 37 in front panel 20. The furniture frame is braced by a series of wooden brace members generally designated 38 that extend parallel to the front panel 20, and by another series of wooden brace members generally designated 39 that connect the back of the frame to front panel 200 A still further series of wooden brace members generally designated 40 are utilized to provide support to the back of the furniture frame, as illustrated in Figures 2 and 3.
Because O.S.B. can be cut to precise shapes by automatic milling machines, construction of furniture frames utilizing O.S.B. is not as dependent on the level of workmanship required for assembly as is the case with conventional dowel-joint furniture. The precise tolerances on the panels cut by these machines allow the teeth in the panels to interlock very tightly.
Nails are used to secure the series of complementary teeth on each ~2~ 89 \
connecting edge together; those nails are generally designated as 45 in Figure 3. To provide greater strength to the furniture, glue may be applied to the surface of the teeth before they are connected together.
Although the foregoiny description has related to the use of O.S.B., the panels of the furniture frame could also be created from plywood. Although only one type of furniture frame has been described, it should be obvious to those skilled in the art that the frame construction of the invention may be applied in forming other types of furniture frames.
. ' . .... ~,.
Claims (8)
1. A furniture frame construction comprising a series of connected contoured planar panels each formed out of multilayered laminated wood sheet, the relative position of the panels defining the general shape of a piece of furniture, pairs of connected panels extending perpendicular to each other each being connected together by a series of interlocking teeth on their connecting edge, the series of teeth extending substantially the length of the connecting edge, one panel of each pair of panels having one more tooth on its connecting edge than the number of teeth on the connecting edge of the other panel, each of the teeth on each of the connecting edges having a length equal to at least approximately ten per cent of the length of the connecting edge, the frame construction also comprising a series of support members connected to the panels for providing rigidity to the frame construction.
2. A furniture frame construction as in claim 1, wherein the wood sheet is formed from multiple layers of machined strands of hardwood.
3. A furniture frame construction as in claim 2, wherein the wood sheet is formed from three layers of machined strands of white poplar wood.
4. A furniture frame construction as in claim 2, wherein the wood sheet is formed from three layers of machined strands of aspen wood.
5. A furniture frame construction as in claim 1, wherein the wood sheet is plywood.
6. A furniture frame construction as in claim 1, wherein all of the planar panels for a piece of furniture may be cut from a single standard-sized piece of the wood sheet.
7. A furniture frame construction comprising a series of connected contoured planar panels each formed out of multiple layers of machined strands of hardwood and also comprising a series of wooden support members, the frame construction comprising a front panel, a pair of side panels, and a pair of back panels, each side panel being oriented perpendicular to the front panel and to the back panels, each side panel being connected to a respective end of the front panel and to one of the back panels by a series of interlocking teeth formed in the connecting edges of the panels, each pair of connecting panels having a series of teeth positioned in a complementary manner such that each tooth on the one panel enters a cavity on the other panel, the series of teeth extending substantially the length of each connecting edge, one panel of each pair of connecting panels having one more tooth on its connecting edge than the number of teeth on the connecting edge of the other panel, each of the teeth on each of the connecting edges having a length equal to at least approximately ten per cent of the length of the connecting edge, the support members being connected to the panels to provide rigidity to the frame construction.
8. A furniture frame construction as in claim 1 or 7, wherein one or more of the panels is constructed from an aggregation of smaller panel sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 590116 CA1298189C (en) | 1989-02-03 | 1989-02-03 | Furniture frame construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 590116 CA1298189C (en) | 1989-02-03 | 1989-02-03 | Furniture frame construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1298189C true CA1298189C (en) | 1992-03-31 |
Family
ID=4139574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 590116 Expired CA1298189C (en) | 1989-02-03 | 1989-02-03 | Furniture frame construction |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1298189C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023004917A1 (en) * | 2021-07-28 | 2023-02-02 | Huzhou Glory Home Furnishings Co., Ltd | Artificial wood board applicable to furniture and bed frame using the same |
-
1989
- 1989-02-03 CA CA 590116 patent/CA1298189C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023004917A1 (en) * | 2021-07-28 | 2023-02-02 | Huzhou Glory Home Furnishings Co., Ltd | Artificial wood board applicable to furniture and bed frame using the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |