GB2213900A - A method of making a frame - Google Patents
A method of making a frame Download PDFInfo
- Publication number
- GB2213900A GB2213900A GB8730112A GB8730112A GB2213900A GB 2213900 A GB2213900 A GB 2213900A GB 8730112 A GB8730112 A GB 8730112A GB 8730112 A GB8730112 A GB 8730112A GB 2213900 A GB2213900 A GB 2213900A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plug
- frame
- slots
- slot
- sidewalls
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 11
- 230000000295 complement effect Effects 0.000 claims abstract 4
- 238000000034 method Methods 0.000 claims description 6
- 240000002871 Tectona grandis Species 0.000 claims description 4
- 230000003190 augmentative effect Effects 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 5
- 239000002023 wood Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/0004—Joining sheets, plates or panels in abutting relationship
- F16B5/0032—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates, or panels or the interlocking key parallel to the abutting edge
- F16B5/0052—Joining sheets, plates or panels in abutting relationship by moving the sheets, plates, or panels or the interlocking key parallel to the abutting edge the interlocking key acting as a dovetail-type key
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
- E04B1/2604—Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/541—Joints substantially without separate connecting elements, e.g. jointing by inter-engagement
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
- E06B3/984—Corner joints or edge joints for windows, doors, or the like frames or wings specially adapted for frame members of wood or other material worked in a similar way
- E06B3/9845—Mitre joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
- E04B1/2604—Connections specially adapted therefor
- E04B2001/2652—Details of nailing, screwing, or bolting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Corner Units Of Frames Or Wings (AREA)
Abstract
A method of making a frame, which includes providing a pair of frame members which have end faces so shaped that they can be joined to one another to form a mitre joint at a corner of the frame, providing a slot in each of said end faces with the slots so positioned that, when the mitre joint is formed, the slots register with one another, providing a plug which has a cross-section complementary to the cross-section of the composite slot afforded by said registering slots, and securing said plug in said composite slot by means of an adhesive, characterised in that the sidewalls of the slots are formed with a plurality of parallel longitudinal ribs and that the sidewalls of the plug are formed with complementary troughs and/or the plug is a wooden plug whose grain extends at right angles to the axis of the composite slot. Pins 17 may augment the adhesive bonding. <IMAGE>
Description
A METHOD OF MAKING A FRAME
Field of the Invention
This invention relates to a method of making a frame and has particular application to the production of wooden window frames. The invention can, however, be applied to the production of other frames, including door frames and frames for greenhouses and conservatories.
The method of the present invention involves the use of a mitre joint and it is an object of the invention to provide a method of making a frame in which the mitre joint is stronger and more reliable than comparable mitre joints at present in use.
Summary of the Invention
According to one aspect of the present invention, there is provided a method of making a frame, which includes providing a pair of frame members which have end faces so shaped that they can be joined to one another to form a mitre joint at a corner of the frame, providing a slot in each of said end faces with the slots so positioned that, when the mitre joint is formed, the slots register with one another, providing a wooden plug which has a cross-section complimentary to the cross-section of the composite slot afforded by said registering slots, and securing said wooden plug in said composite slot by means of an adhesive, characterised in that the grain of the wooden plug extends at right angles to the axis of the composite slot.
Bonding of the plug in position by means of the adhesive can be augmented by means of pins passed through the plug and the frame members.
Adhesive is preferably also applied to the abutting end faces of the frame members and there can be either one or two pins passing through each of the frame members and the plug.
According to another aspect of the present invention, there is provided a method of making a frame, which includes providing a pair of frame members which have end faces so shaped that they can be joined to one another to form a mitre joint at a corner of the frame, providing a slot in each of said end faces with the slots so positioned that, when the mitre joint is formed, the slots register with one another, providing a plug which has a cross-section complimentary to the cross-section of the composite slot afforded by said registering slots, and securing said wooden plug in said composite slot by means of an adhesive, characterised in that the sidewalls of the slots are formed with a plurality of parallel longitudinal ribs and that the sidewalls of the plug are formed with complimentary troughs.
The ribs and troughs of the slot sidewalls and the plug can be afforded by making the slot sidewalls and the plug of saw-tooth form in cross-section.
The shaping of the slot sidewalls and the plug in the manner described above provides a greater surface area for the adhesive so that a stronger joint is thereby obtained.
Bonding of the plug in position by means of the adhesive can be augmented by means of pins passed through the plug and the frame members.
The plug can be a wooden plug, particularly a teak plug with the grain of the teak extending at right angles to the axis of the composite slot into which the plug is fitted.
Brief Description of the Drawings
Figure 1 is a plan view of a corner of a window frame;
Figure 2 is a view of the window frame corner in the direction indicated by the arrow A of Figure 1, and
Figure 3 is a perspective view of the opposite corner of the frame.
Description of the Preferred Embodiment
Figure 1 shows the construction of a corner of a window frame, the frame comprising frame members 10 and 11, the ends of which are cut or otherwise shaped so that they have end faces inclined at 450 to the longitudinal axes of the respective frame members 10 and 11. Each of the end faces is formed with a slot 12, 13 which is positioned midway between the upper and lower surfaces of the frame members 10 and 11 and which extends for the full length of each end face of each frame member 10, 11. The two slots 12 and 13 register with one another when the frame members 10 and 11 are fitted together as shown in Figure 1 to provide a mitre joint.
The sidewalls of the slots 12 and 13 are not parallel sided but are of generally ribbed or saw-tooth formation as shown in Figure 2, the slots being of constant cross-section throughout their length so as to provide a composite slot into which a plug 14 can be fitted. The plug 14 is of constant cross section complimentary' to that of the composite slot afforded by the two registering slots 12 and 13, i.e. the plug 14 has upper and lower surfaces which are of ribbed or saw-tooth form in cross-section. The dimensions of the plug 14 are such that it is a loose sliding fit in the composite slot afforded by the two registering slots 12 and 13.
As shown in Figure 3, the plug 14 has two parallel -sides 15 and 16 and end formations which include portions inclined at 45 to the respective sides 15 and 16 so that, when the plug 14 is fitted in the composite slot afforded by the two registering slots 12 and 13, the end faces of the plug 14 are flush with the adjacent sidewalls of the frame members 10 and 11.
Before the plug 14 is fitted in the composite slot afforded by the registering slots 12 and 13, adhesive is applied to the abutting surfaces of the end faces of the frame members and to the sidewalls and the bases of the two slots 12 and 13. The plug 14 is then slid into position and pins 17 are then driven through the frame members 10 and 11 and through the plug 14 to augment the adhesive bonding provided at the joint. As shown in the drawing, only a single pin 17 may be used for each frame member 10, 11. It is preferred, however, that two pins 17 should be used for each frame member 10, 11, i.e. a total of four pins.
Because of the ribbed or saw-tooth formation of the upper and lower surfaces of the plug 14, the area of the adhesive bond between the plug 14 and the two frame members 10 and 11 is significantly greater than would be obtained if the slots 12 and 13 were straight parallel sided slots. In addition, the ribbed formation of the plug 14 inter-engaging with the ribbed or saw-tooth formation of the sides of the slots 12 and 13 provides a keying interlock between the plug 14 and each frame member 10, 11.
The plug 14 may be formed as a moulding from a synthetic plastics material, for example, a polyamide. It is preferred, however, that the plug 14 should be of a hard wood, such as teak. In such case, the grain of the wood is at right angles to the planes of the abutting faces of the frame members 10 and 11, i.e. the grain of the wood forming the plug 14 is so oriented to provide the maximum strength for the joint.
Claims (7)
1. A method of making a frame, which includes providing
a pair of frame members which have end faces so shaped
that they can be joined to one another to form a mitre joint
at a corner of the frame, providing a slot in each of said
end faces with the slots so positioned that, when the mitre
joint is formed, the slots register with one another, providing
--a plug which has a cross-section complementary to the cross -section of the composite slot afforded by said registering
slots, and securing said plug in said composite slot by means of. an -adhesive, characterised in that the sidewalls of the
slots are formed with a plurality of parallel longitudinal ribs
and that the sidewalls of the plug are formed with complementary
troughs and/or the plug is a wooden plug whose grain extends
at right angles to the axis of the composite slot.
2. A method according to claim 1 in which bonding of
the plug in position by means of the adhesive is augmented
by means of one or more pins passed through the plug and
the frame members.
3. A method according to claim 1 or claim 2 in which
adhesive is also applied to the abutting end faces of the
frame members.
4. A method according to any of claims 1 to 3 in which
the ribs and troughs of the slot sidewalls and the plug are
afforded by making the slot sidewalls and the plug of saw
tooth form in cross-section.
5. A method according to any of the preceding claims v in which the plug is a teak plug.
6. A method of making a frame substantially as described with reference to the accompanying drawings.
7. A frame made by a method according to any of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8730112A GB2213900B (en) | 1987-12-24 | 1987-12-24 | A method of making a frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8730112A GB2213900B (en) | 1987-12-24 | 1987-12-24 | A method of making a frame |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8730112D0 GB8730112D0 (en) | 1988-02-03 |
| GB2213900A true GB2213900A (en) | 1989-08-23 |
| GB2213900B GB2213900B (en) | 1991-05-01 |
Family
ID=10629031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8730112A Expired - Lifetime GB2213900B (en) | 1987-12-24 | 1987-12-24 | A method of making a frame |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2213900B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0722047A2 (en) * | 1995-01-12 | 1996-07-17 | Teknolux Limited | Connector for connecting together two generally elongate members |
| EP2096217A1 (en) * | 2008-02-26 | 2009-09-02 | SPAX International GmbH & Co. KG | Connection for plank structures |
| CN104895879A (en) * | 2015-05-07 | 2015-09-09 | 吴中区光福明仕阁古典家具厂 | Plate strip corner joint structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4057356A (en) * | 1974-11-07 | 1977-11-08 | Richard Bent Nissen | Glued corner-joints |
| GB2076924A (en) * | 1980-05-31 | 1981-12-09 | Fairclough Harry Joinery Ltd | Corner joint for window frames |
-
1987
- 1987-12-24 GB GB8730112A patent/GB2213900B/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4057356A (en) * | 1974-11-07 | 1977-11-08 | Richard Bent Nissen | Glued corner-joints |
| GB2076924A (en) * | 1980-05-31 | 1981-12-09 | Fairclough Harry Joinery Ltd | Corner joint for window frames |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0722047A2 (en) * | 1995-01-12 | 1996-07-17 | Teknolux Limited | Connector for connecting together two generally elongate members |
| EP0722047A3 (en) * | 1995-01-12 | 1996-07-24 | Teknolux Limited | |
| EP2096217A1 (en) * | 2008-02-26 | 2009-09-02 | SPAX International GmbH & Co. KG | Connection for plank structures |
| CN104895879A (en) * | 2015-05-07 | 2015-09-09 | 吴中区光福明仕阁古典家具厂 | Plate strip corner joint structure |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2213900B (en) | 1991-05-01 |
| GB8730112D0 (en) | 1988-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19931224 |