CA2275836C - Production of composite wood product from used wood - Google Patents
Production of composite wood product from used wood Download PDFInfo
- Publication number
- CA2275836C CA2275836C CA002275836A CA2275836A CA2275836C CA 2275836 C CA2275836 C CA 2275836C CA 002275836 A CA002275836 A CA 002275836A CA 2275836 A CA2275836 A CA 2275836A CA 2275836 C CA2275836 C CA 2275836C
- Authority
- CA
- Canada
- Prior art keywords
- stave
- section
- side edges
- substrate
- major surfaces
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G1/00—Machines or devices for removing knots or other irregularities or for filling-up holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27H—BENDING WOOD OR SIMILAR MATERIAL; COOPERAGE; MAKING WHEELS FROM WOOD OR SIMILAR MATERIAL
- B27H3/00—Manufacture of constructional elements of tubes, coops, or barrels
- B27H3/02—Manufacture of barrel staves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
- B27M3/0086—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by connecting using glue
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Barrel staves are recycled into a high value wood product. The longitudinally and laterally curved stave is initially trimmed along the edges to eliminate the convergency of the side edges. The stave is then split longitudinally, following the longitudinal curve of the stave. Each section of the stave is then passed through a thickness planer where the thin stave section is flattened and planed to provide two parallel surfaces. The resultant planed stave sections are flattened and adhered to a substrate as a thick veneer. The composite product can than be used for such purposes as cabinet and furniture making.
Description
PRODUCTION OF COMPOSITE WOOD PRODUCT FROM USED WOOD
FIELD OF THE INVENTION
The present invention relates to the production of a high value wood product from waste materials, particularly barrel staves.
BACKGROUND
Barrels, particularly those use in the storage, ageing and transportation of wines and liquors, are manufactured from high quality hardwood, especially white oak. Supplies of this wood for use in, for example, cabinet and furniture making, are limited and expensive. While it would be desirable to recycle used barrel material for these purposes, the barrel staves are curved both lengthwise and transversely and can not be trimmed to a useful flat product. The inner surface of a barrel stave is often charred for ageing of wines and spirits, making the inner surface unusable for other purposes.
The applicant has now invented a process for reclaiming this high value wood for use, for example, in cabinetry and furniture making.
SUMMARY
According to the present invention there is provided a method of producing a wood product from a barrel stave having opposite ends, inner and outer major surfaces extending between the ends and opposite side edges extending between the inner and outer major surfaces, each of the inner and outer major surfaces having a longitudinal curvature between the ends, said method comprising:
splitting the stave from end to end, along at least one longitudinally curved kerf between the inner and outer major surfaces, to produce plural longitudinally curved stave sections;
planing each stave section to provide parallel, longitudinally curved planed major surfaces;
FIELD OF THE INVENTION
The present invention relates to the production of a high value wood product from waste materials, particularly barrel staves.
BACKGROUND
Barrels, particularly those use in the storage, ageing and transportation of wines and liquors, are manufactured from high quality hardwood, especially white oak. Supplies of this wood for use in, for example, cabinet and furniture making, are limited and expensive. While it would be desirable to recycle used barrel material for these purposes, the barrel staves are curved both lengthwise and transversely and can not be trimmed to a useful flat product. The inner surface of a barrel stave is often charred for ageing of wines and spirits, making the inner surface unusable for other purposes.
The applicant has now invented a process for reclaiming this high value wood for use, for example, in cabinetry and furniture making.
SUMMARY
According to the present invention there is provided a method of producing a wood product from a barrel stave having opposite ends, inner and outer major surfaces extending between the ends and opposite side edges extending between the inner and outer major surfaces, each of the inner and outer major surfaces having a longitudinal curvature between the ends, said method comprising:
splitting the stave from end to end, along at least one longitudinally curved kerf between the inner and outer major surfaces, to produce plural longitudinally curved stave sections;
planing each stave section to provide parallel, longitudinally curved planed major surfaces;
-2-deforming each section to a flat configuration and adhering the deformed section to a substrate.
Splitting the stave lengthwise, preferably in two, produces thinner stave sections that are, unlike the full stave, sufficiently flexible that they may be pressed flat. This may be done during planing, using the pressure rollers of a thickness planer. When the resultant stave section is flattened and glued to a flat substrate, a composite article ready for use is produced. The substrate may be another type of wood, a wood product for example particle board or plywood, or any other suitable substrate.
The longitudinal splitting of the staves is preferably carried out using a band saw in order to follow the longitudinal contour of the stave. As a preliminary step, one or both edges of the stave may be cut off to provide a flat surface perpendicular to the longitudinal cut for supporting the stave on the table of the band saw.
Once the stave section has been laminated onto the substrate, side edges of the compound product may be trimmed as necessary to provide a parallel sided product with the desirable high quality wood covering one complete surface.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is an isometric view illustrating a barrel stave;
Figure 2 is a transverse cross section of the stave;
Figure 3 is a longitudinal cross section of the stave;
Figure 4 is a transverse cross section showing an edge trimming step;
Figure 5 is a transverse cross section showing the longitudinal splitting of the stave;
Splitting the stave lengthwise, preferably in two, produces thinner stave sections that are, unlike the full stave, sufficiently flexible that they may be pressed flat. This may be done during planing, using the pressure rollers of a thickness planer. When the resultant stave section is flattened and glued to a flat substrate, a composite article ready for use is produced. The substrate may be another type of wood, a wood product for example particle board or plywood, or any other suitable substrate.
The longitudinal splitting of the staves is preferably carried out using a band saw in order to follow the longitudinal contour of the stave. As a preliminary step, one or both edges of the stave may be cut off to provide a flat surface perpendicular to the longitudinal cut for supporting the stave on the table of the band saw.
Once the stave section has been laminated onto the substrate, side edges of the compound product may be trimmed as necessary to provide a parallel sided product with the desirable high quality wood covering one complete surface.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is an isometric view illustrating a barrel stave;
Figure 2 is a transverse cross section of the stave;
Figure 3 is a longitudinal cross section of the stave;
Figure 4 is a transverse cross section showing an edge trimming step;
Figure 5 is a transverse cross section showing the longitudinal splitting of the stave;
-3-Figure 6 is a longitudinal cross section illustrating the planning of a strip section;
Figure 7 is an elevation showing the laminating of the stave section to a substrate;
and Figure 8 is a plan view illustrating edge trimming of the composite article formed by the stave section and the substrate.
DETAILED DESCRIPTION
Referring to the accompanying drawings, Figure I illustrates a barrel stave 10.
The stave has two opposite ends 12. It has two major faces, an inner face 14 that is concave and outer face 16 that is convex. Extending between the inner and outer faces are side edges 18. These edges are convex from end to end and converge from the outer face towards the inner face. In many cases the inner face 14 of the barrel is charred and the barrel stave has a relatively high moisture content, particularly if it has been used in the recent past for containing a liquid. As discussed above, barrel staves of this sort are commonly made from white oak, a material which is of very high value for furniture and cabinet making.
Before processing the barrel stave, it is preferably dried to a suitable moisture level for workability, preferably below 18% moisture.
The first step in processing the barrel is illustrated in Figure 4. This involves trimming the side edges 18 to remove in the inwards taper of the stave. This is conveniently done using a band saw, trimming about one quarter inch off each edge of the stave.
The next step is splitting the stave in two lengthwise, as illustrated in Figure 5.
The center kerf 22 extends from edge to edge perpendicular to the trimmed edges. The cut is made with a band saw with on of the trimmed edges supported on the table 24 of the saw. The kerf 22 follows the longitudinal contour of the stave. This
Figure 7 is an elevation showing the laminating of the stave section to a substrate;
and Figure 8 is a plan view illustrating edge trimming of the composite article formed by the stave section and the substrate.
DETAILED DESCRIPTION
Referring to the accompanying drawings, Figure I illustrates a barrel stave 10.
The stave has two opposite ends 12. It has two major faces, an inner face 14 that is concave and outer face 16 that is convex. Extending between the inner and outer faces are side edges 18. These edges are convex from end to end and converge from the outer face towards the inner face. In many cases the inner face 14 of the barrel is charred and the barrel stave has a relatively high moisture content, particularly if it has been used in the recent past for containing a liquid. As discussed above, barrel staves of this sort are commonly made from white oak, a material which is of very high value for furniture and cabinet making.
Before processing the barrel stave, it is preferably dried to a suitable moisture level for workability, preferably below 18% moisture.
The first step in processing the barrel is illustrated in Figure 4. This involves trimming the side edges 18 to remove in the inwards taper of the stave. This is conveniently done using a band saw, trimming about one quarter inch off each edge of the stave.
The next step is splitting the stave in two lengthwise, as illustrated in Figure 5.
The center kerf 22 extends from edge to edge perpendicular to the trimmed edges. The cut is made with a band saw with on of the trimmed edges supported on the table 24 of the saw. The kerf 22 follows the longitudinal contour of the stave. This
-4-produces an inner section 26 and an outer section 28 of the stave.
In the following step, the stave section is passed through a thickness planer 30. The planer is conventional. It includes a set of pressure rollers 32 for pressing a workpiece against a bed 34 and upper and lower planer heads 36 for planing parallel surfaces on the workpiece as it passes through the planer. As the curved stave section passes through the planer, the rollers 32 press it flat against the planer bed. This removes any charcoal on the inner face and yields a planed inner face 38 and a planed outer face 40. The stave section is at this point approximately one quarter inch thick and 30 inches long.
As illustrated in Figure 7, a substrate 42 is covered with a layer of adhesive 44 and the planed workpiece is laminated to the substrate. Pressure is applied to the composite using a hydraulic press (not illustrated) with a base plate 46 supporting the substrate 42 and a top plate 48 pressing the stave section against the substrate. This yields a composite panel 50 with the stave section laminated to the top surface of the substrate. The side edges of this composite article may then be trimmed along parallel cut lines 52 as shown in Figure 8 to yield a parallel sided product with a thick surface veneer of sound white oak.
While one particular embodiment of the present invention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention and are intended to be included herein. The invention is to be considered limited solely by the scope of the appended claims.
In the following step, the stave section is passed through a thickness planer 30. The planer is conventional. It includes a set of pressure rollers 32 for pressing a workpiece against a bed 34 and upper and lower planer heads 36 for planing parallel surfaces on the workpiece as it passes through the planer. As the curved stave section passes through the planer, the rollers 32 press it flat against the planer bed. This removes any charcoal on the inner face and yields a planed inner face 38 and a planed outer face 40. The stave section is at this point approximately one quarter inch thick and 30 inches long.
As illustrated in Figure 7, a substrate 42 is covered with a layer of adhesive 44 and the planed workpiece is laminated to the substrate. Pressure is applied to the composite using a hydraulic press (not illustrated) with a base plate 46 supporting the substrate 42 and a top plate 48 pressing the stave section against the substrate. This yields a composite panel 50 with the stave section laminated to the top surface of the substrate. The side edges of this composite article may then be trimmed along parallel cut lines 52 as shown in Figure 8 to yield a parallel sided product with a thick surface veneer of sound white oak.
While one particular embodiment of the present invention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention and are intended to be included herein. The invention is to be considered limited solely by the scope of the appended claims.
Claims (4)
1. A method of producing a wood product from a barrel stave having opposite ends, inner and outer major surfaces extending between the ends and opposite side edges extending between the inner and outer major surfaces, each of the inner and outer major surfaces having a longitudinal curvature between the ends, said method comprising:
splitting the stave from end to end, along at least one longitudinally curved kerf between the inner and outer major surfaces, to produce plural longitudinally curved stave sections;
planing each stave section to provide parallel, longitudinally curved planed surfaces on the stave section;
deforming each stave section to a flat configuration and adhering the deformed stave section to a substrate.
splitting the stave from end to end, along at least one longitudinally curved kerf between the inner and outer major surfaces, to produce plural longitudinally curved stave sections;
planing each stave section to provide parallel, longitudinally curved planed surfaces on the stave section;
deforming each stave section to a flat configuration and adhering the deformed stave section to a substrate.
2. A method according to claim 1 for a stave with inwardly convergent side edges, said method including a preliminary step of cutting at least one of the side edges of the stave to provide a trimmed side edge and subsequently forming said longitudinally curved kerf perpendicular to the trimmed side edge so that the at least one of the sides edges is neither inwardly nor outwardly convergent.
page 6
page 6
3. A method according to claim 1 or 2 including a subsequent step of trimming the side edges of at least one of the stave sections and substrate.
4. A method according to claim 1, 2 or 3 comprising flattening each stave section during the planing step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002275836A CA2275836C (en) | 1999-06-21 | 1999-06-21 | Production of composite wood product from used wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002275836A CA2275836C (en) | 1999-06-21 | 1999-06-21 | Production of composite wood product from used wood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2275836A1 CA2275836A1 (en) | 2000-12-21 |
| CA2275836C true CA2275836C (en) | 2008-09-16 |
Family
ID=30774414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002275836A Expired - Lifetime CA2275836C (en) | 1999-06-21 | 1999-06-21 | Production of composite wood product from used wood |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2275836C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023239932A1 (en) * | 2022-06-10 | 2023-12-14 | Jonathan William Roleder | Systems and methods for recycling a barrel |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6898834B1 (en) * | 2003-03-03 | 2005-05-31 | Westbridge Pty Ltd | Barrel stave reclaim |
| FR2888769A1 (en) * | 2005-07-21 | 2007-01-26 | Pascal Mathieu | Oak cask`s stave treating method, involves exerting pressure on plane when one of staves is at temperature higher than vitreous transition point, and maintaining pressure until temperature at core passes beyond transition point |
| IT1397877B1 (en) * | 2009-09-17 | 2013-02-04 | Bottega Del Mobile S R L | METHOD OF REALIZING A SOLID WOOD FURNITURE COMPONENT |
| FR2953758B1 (en) * | 2009-12-16 | 2012-01-06 | Olivier Casier | DECORATIVE MODULE, DECORATIVE SURFACE AND METHOD OF OBTAINING |
| US10052787B1 (en) * | 2014-06-09 | 2018-08-21 | Thomas A. Petschke, JR. | Spirit flavored and scented wooden articles |
-
1999
- 1999-06-21 CA CA002275836A patent/CA2275836C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023239932A1 (en) * | 2022-06-10 | 2023-12-14 | Jonathan William Roleder | Systems and methods for recycling a barrel |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2275836A1 (en) | 2000-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20190621 |