WO1997018931A1 - Radially sawn posts - Google Patents
Radially sawn posts Download PDFInfo
- Publication number
- WO1997018931A1 WO1997018931A1 PCT/AU1996/000744 AU9600744W WO9718931A1 WO 1997018931 A1 WO1997018931 A1 WO 1997018931A1 AU 9600744 W AU9600744 W AU 9600744W WO 9718931 A1 WO9718931 A1 WO 9718931A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wedge sectors
- closest
- sectors
- ofthe
- structure according
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
- B27B1/005—Methods for subdividing trunks or logs essentially involving sawing including the step of dividing the log into sector-shaped segments
-
- 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
- B27M3/0026—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
- E04C3/14—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with substantially solid, i.e. unapertured, web
Definitions
- Radial sector wedges are produced from a log by cutting the log from the outside to a chosen centre or through the chosen centre
- Wedge sectors for the present invention are produced with an acute angle between the radial saw cut faces and would generally be sectors with 60° angles, 45° angles or less
- Wedges for the present invention have two stated radial faces to which the growth ⁇ ngs are basically at ⁇ ght angles, a face or point that was closest to the apex ofthe sector and is referred to as the apex face and a face that was closest to the outside ofthe tree, to which the growth ⁇ ngs are basically tangential, and which is referred to as the tangential face
- Figure 1 shows the end sectors of a log radially divided by saw cuts ( 1 ) into eight sector wedges (2)
- Figure 2 shows how growth stresses can cause wedge sectors (3) to spring away from dotted line (4), which represents the former axis of a log, along which a saw cut was made to release the wedges.
- Figure 3 shows the end section ofthe sectors (5) with dotted line (6) representing the plane that divides the two radial faces ofthe wedge This plane generally does not distort when wedges are cut from a log A characterstic of radial saw wedges is their straightness when viewed along this plane
- Figure 4 shows a wedge processed to produce a component for the structure with an apex face (7), a tangential face (8) and two radial faces (9), with typical growth ⁇ ng orientation represented by lines (10)
- Figure 5 shows four wedge sectors connected together in a preferred embodiment ofthe method with tangential faces (8) closest together, and apex faces (7) furtherest apart
- Figure 5 shows how wedges can be machined with flats and rebates to facilitate joining, with a square face and rebate shown by (11) and an angled rebate shown at (12)
- Posts can be connected by bolts represented by dotted line (13), screws represented by dotted line (34), by gluing at the interface or by a combination ofthe above methods
- Dotted lines (13) and (14) also represent the plane that divide the angle formed by the two radial faces
- the angles between the planes would generally be equal, i.e. 180° for 3 sector posts, 90° for 4 sector posts, 60° for 6 sector posts and the like
- These planes would generally meet at a central point in the middle ofthe post Post connected together in this manner will be inherently straight, with growth stresses and distortion factors balanced
- Tapered posts can be made by applying tapering cuts and machining to wedge sectors. This can be useful for appearance and by using the natural taper of logs for the full use ofthe timber and natural strength.
- wedge sectors can be connected by a intermediate means, other than directly to each other.
- Figure 6 shows four sectors connected to a rectangular hollow section (RHS) of steel (16). Sectors can be used for enhancing appearance and strength characteristics of a steel section. Sectors can be connected by screwing, gluing or bolting or other mechanical means. Connection can be continual or at suitable spacings and allow for increasing distance between components to make a flared or tapered structure.
- Figure 7 shows how sectors can be cut or machined as at dotted line
- Section sectors such as indicated by (18) can be used to make smaller section members.
- Figure 8 shows how wedges can be joined externally by connection means applied to radial faces or faces machined on or in to the radial faces. These could allow the joining of sectors without the cutting or machining of tangential faces. These could be metal, timber, plastic or other suitable means fixed by screwing, gluing- nailing or other mechanical means.
- Posts or structures can be made from any number of sectors from wedges cut with acute angles between the radial faces.
- Timber components may be machined to enhance the appearance or function ofthe product.
Abstract
A structure formed by connecting together three or more timber wedge sectors produced by cutting acute-angled wedge sectors from a log so that: (a) the parts of the wedge sectors that were closest (8) to the outside of the log are closest together, (b) the parts of the wedge sectors that were closest (7) to the centre of the log are furtherest apart, (c) the angles between the planes dividing the angle formed by the wedge sectors radial faces are generally equal, (d) the planes dividing the angle formed by the wedge sectors meet generally at the centre (15) of the structure.
Description
RADIALLY SAWN POSTS
The present method has for its object a post and a method of constructing posts from radially sawn wedge sectors of timber The advantages of producing the construction include a low wastage log sawing process for post components a dedicated and repetative production process option of minimal or no drying requirements for use of wedge sectors high stability and low distortion factor to wedge sectors option of minimal machining requirements strong and easy construction the capability of production in long lengths capacity for steel reinforcing capacity for provision of services in hollow centres the ability to balance and negate the adverse effects of growth stresses in logs
The invention m its most basic embodiment involves the cutting of wedge sectors from a log and taking at least three ofthe wedge sectors and connecting them together to form a post column or structural member such that the wedge sectors that were closest to the outside ofthe tree are closest together in the structural member and so that the former apex ofthe radial faces which were closest together in the tree are furtherest apart in the structural member
Radial sector wedges are produced from a log by cutting the log from the outside to a chosen centre or through the chosen centre
Wedge sectors for the present invention are produced with an acute angle between the radial saw cut faces and would generally be sectors with 60° angles, 45° angles or less
Wedges for the present invention have two stated radial faces to which the growth πngs are basically at πght angles, a face or point that was closest to the apex ofthe sector and is referred to as the apex face and a face that was
closest to the outside ofthe tree, to which the growth πngs are basically tangential, and which is referred to as the tangential face
In the accompanying diagrams, Figure 1 shows the end sectors of a log radially divided by saw cuts ( 1 ) into eight sector wedges (2)
Figure 2 shows how growth stresses can cause wedge sectors (3) to spring away from dotted line (4), which represents the former axis of a log, along which a saw cut was made to release the wedges.
Figure 3 shows the end section ofthe sectors (5) with dotted line (6) representing the plane that divides the two radial faces ofthe wedge This plane generally does not distort when wedges are cut from a log A characterstic of radial saw wedges is their straightness when viewed along this plane
Figure 4 shows a wedge processed to produce a component for the structure with an apex face (7), a tangential face (8) and two radial faces (9), with typical growth πng orientation represented by lines (10)
Figure 5 shows four wedge sectors connected together in a preferred embodiment ofthe method with tangential faces (8) closest together, and apex faces (7) furtherest apart Figure 5 shows how wedges can be machined with flats and rebates to facilitate joining, with a square face and rebate shown by (11) and an angled rebate shown at (12)
Posts can be connected by bolts represented by dotted line (13), screws represented by dotted line (34), by gluing at the interface or by a combination ofthe above methods Dotted lines (13) and (14) also represent the plane that divide the angle formed by the two radial faces For the present invention the angles between the planes would generally be equal, i.e. 180° for 3 sector posts, 90° for 4 sector posts, 60° for 6 sector posts and the like These planes would generally meet at a central point in the middle ofthe post Post connected together in this manner will be inherently straight, with growth stresses and distortion factors balanced
Services, reinforcing or connecting facilities can be accommodated in hollow section (15)
Tapered posts can be made by applying tapering cuts and machining to wedge sectors. This can be useful for appearance and by using the natural taper of logs for the full use ofthe timber and natural strength.
In a further embodiment ofthe invention wedge sectors can be connected by a intermediate means, other than directly to each other. Figure 6 shows four sectors connected to a rectangular hollow section (RHS) of steel (16). Sectors can be used for enhancing appearance and strength characteristics of a steel section. Sectors can be connected by screwing, gluing or bolting or other mechanical means. Connection can be continual or at suitable spacings and allow for increasing distance between components to make a flared or tapered structure. Figure 7 shows how sectors can be cut or machined as at dotted line
(17) to make components for posts of a different thickness and with different characteristics. Section sectors such as indicated by (18) can be used to make smaller section members.
Figure 8 shows how wedges can be joined externally by connection means applied to radial faces or faces machined on or in to the radial faces. These could allow the joining of sectors without the cutting or machining of tangential faces. These could be metal, timber, plastic or other suitable means fixed by screwing, gluing- nailing or other mechanical means.
Posts or structures can be made from any number of sectors from wedges cut with acute angles between the radial faces.
Timber components may be machined to enhance the appearance or function ofthe product.
Claims
THE CLAIM DEFINING THE INVENTION ARE AS FOLLOWS
1 A structure formed by connecting together three or more timber wedge sectors produced by cuttmg acute angled wedge sectors from a log so that
(a) the parts ofthe wedge sectors that were closest to the outside ofthe log are closest together
(b) the parts of the wedge sectors that were closest to the centre of the log are furtherest apart
(c) the angles between the planes dividing the angle formed by the wedge sectors radial faces are generally equal
(d) the planes dividing the angle formed by the wedge sectors meet generally at the centre ofthe structure
2 A structure according to claim one in which an apex face ofthe required width and shape to cut or machined and or on which a tangential face is cut or machined on the wedge sectors
3 A structure according to claim 1 & 2 in which flats and or rebates are machined or cut in tangential faces and radial faces for appearance purposes and to facilitate joining
4. A structure according to claim 1 to 3 in which the components are connected directly to one another by gluing, bolting, screwing or other mechanical means.
5 A structure according to claim 1 to 3 in which the components are connected to one another by attachments to part or part of the radial faces said attachments being visible from the outside said method removing the necessity of cuttmg or machining tangential faces A structure according to claims 1 to 3 in which the component may not touch each other and are connected by intermediate means such as retangular hollow section steel, bolts, struts or spaces either continually or at suitable spacing
A structure according to claims 1 to 5 in which the structure tapers, such taper being caused by either machining and tapeπng the individual components, or increasing the distance between the individual components
A structure according to claim 1 in which four wedge sectors are connected together so that the adjoining radial faces form two distinct planes
A method according to claims 1 to 8 in which
(a) wedge sectors are cut from a log
(b) the wedge sectors are sawn or machined if necessary to produce a component
(c) at least three components are connected together so that the part of component that was closest to the outside ofthe tree are closest together -ind the part ofthe component that was closest to the centre of the tree are furtherest apart
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU75570/96A AU7557096A (en) | 1995-11-22 | 1996-11-21 | Radially sawn posts |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPN6728 | 1995-11-22 | ||
| AUPN6728A AUPN672895A0 (en) | 1995-11-22 | 1995-11-22 | Radial sawn posts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997018931A1 true WO1997018931A1 (en) | 1997-05-29 |
Family
ID=3791052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AU1996/000744 WO1997018931A1 (en) | 1995-11-22 | 1996-11-21 | Radially sawn posts |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AUPN672895A0 (en) |
| WO (1) | WO1997018931A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH183513A (en) * | 1935-05-20 | 1936-04-15 | Maag Hans | Process for the production of middle layers for carpentry purposes. |
| SU490651A1 (en) * | 1973-01-11 | 1975-11-05 | Воронежский лесотехнический институт | Method for producing glued blanks for radial sawing |
| SU666075A1 (en) * | 1976-11-17 | 1979-06-05 | Центральный Научно-Исследовательский И Проектно-Конструкторский Институт Механизации И Энергетики Лесной Промышленности | Round timber processing method |
| US4394409A (en) * | 1977-09-22 | 1983-07-19 | Weyerhaeuser Company | Composite wood article and method of manufacture |
| DE3216669A1 (en) * | 1982-05-04 | 1983-11-10 | Peter 2057 Reinbek Polaczek | METHOD FOR PROCESSING ROUND WOOD TO CONSTRUCTION WOOD OR VENEER AND DEVICE FOR CARRYING OUT THE METHOD |
| AU5578090A (en) * | 1989-05-22 | 1990-11-22 | Andrew Karl Knorr | A method in which radial segments are cut from a log and various products are made from the resulting segments |
| SE465412B (en) * | 1987-06-25 | 1991-09-09 | Lars Hammarstroem | Method for producing timber units |
-
1995
- 1995-11-22 AU AUPN6728A patent/AUPN672895A0/en not_active Abandoned
-
1996
- 1996-11-21 WO PCT/AU1996/000744 patent/WO1997018931A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH183513A (en) * | 1935-05-20 | 1936-04-15 | Maag Hans | Process for the production of middle layers for carpentry purposes. |
| SU490651A1 (en) * | 1973-01-11 | 1975-11-05 | Воронежский лесотехнический институт | Method for producing glued blanks for radial sawing |
| SU666075A1 (en) * | 1976-11-17 | 1979-06-05 | Центральный Научно-Исследовательский И Проектно-Конструкторский Институт Механизации И Энергетики Лесной Промышленности | Round timber processing method |
| US4394409A (en) * | 1977-09-22 | 1983-07-19 | Weyerhaeuser Company | Composite wood article and method of manufacture |
| DE3216669A1 (en) * | 1982-05-04 | 1983-11-10 | Peter 2057 Reinbek Polaczek | METHOD FOR PROCESSING ROUND WOOD TO CONSTRUCTION WOOD OR VENEER AND DEVICE FOR CARRYING OUT THE METHOD |
| SE465412B (en) * | 1987-06-25 | 1991-09-09 | Lars Hammarstroem | Method for producing timber units |
| AU5578090A (en) * | 1989-05-22 | 1990-11-22 | Andrew Karl Knorr | A method in which radial segments are cut from a log and various products are made from the resulting segments |
Non-Patent Citations (2)
| Title |
|---|
| DERWENT ENGLISH LANGUAGE ABSTRACT, Accession No. B7649C/08, Week C08, Class P6, page 6; & SU,A,666 075 (FOREST POWER MECHN) 9 June 1979. * |
| DERWENT ENGLISH LANGUAGE ABSTRACT, Accession No. H3213X/33, Week X33, Class P6, page 3; & SU,A,490 651 (VORON FOREST) 6 February 1976. * |
Also Published As
| Publication number | Publication date |
|---|---|
| AUPN672895A0 (en) | 1995-12-14 |
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