CA2114099A1 - Mitre joints in wood frames for doors and the like - Google Patents
Mitre joints in wood frames for doors and the likeInfo
- Publication number
- CA2114099A1 CA2114099A1 CA002114099A CA2114099A CA2114099A1 CA 2114099 A1 CA2114099 A1 CA 2114099A1 CA 002114099 A CA002114099 A CA 002114099A CA 2114099 A CA2114099 A CA 2114099A CA 2114099 A1 CA2114099 A1 CA 2114099A1
- Authority
- CA
- Canada
- Prior art keywords
- screw
- workpieces
- dowel
- hole
- juncture
- 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
- 239000002023 wood Substances 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 238000005304 joining Methods 0.000 claims description 8
- 238000009966 trimming Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 description 2
- 101150034533 ATIC gene Proteins 0.000 description 1
- 235000014328 Schoenoplectus acutus var occidentalis Nutrition 0.000 description 1
- 244000136421 Scirpus acutus Species 0.000 description 1
- 235000014326 Scirpus californicus Nutrition 0.000 description 1
- 235000017913 Scirpus lacustris Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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
- B27G5/00—Machines or devices for working mitre joints with even abutting ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
- B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
-
- 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
-
- 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
- B27M3/18—Manufacture or reconditioning of specific semi-finished or finished articles of furniture or of doors
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
Abstract
A mitre joint and a method and apparatus for its manufacture are disclosed A joint between two workpieces has a hole extending through one of the workpieces and into the other, across the line of juncture of the two workpieces, and preferably perpendicular to the line of juncture. A screw is driven into the hole to join the workpieces. A dowel is then inserted into the hole behind the screw and is then trimmed to provide a flush edge surface on the workpiece. The manufacture of the joint lends itself to automation and eliminates the clamping and setting time required with a convention glued and doweled joint.
Description
21140~9 Ml~RE JOINTS IN WOOD ~Al~ S FOR DOORS AND THE LIKE
The present invention relates to the joining of wood and more particularly to mitre joints and their pro~uction Mitre joints are commonly used in frames, for ~...p'e in the frames of panel doors for cab~ets and the like. These joints are formed by cutting the workpiece ends to mate along a line of junclule that bisects the angle b~wæn the workpieces, usuaUy equally. The workpi~Pces are joined with adhesive and dowels or splines set into the workI)ie~es to bridge the line of juncture. This conventional glued and doweled joint is subject to loosening and parting owing to changes in humidity and te~ erature. It is difficult to make, and the joint must be clamped until the glue is fully set. The prior art joint does not lend itself to high speed or ~u~~ ed pro~ucti-n.
The present invention relates to novel mitre joints that mitig~t~P these problems and to me~ho~ls and appa~alus for their m~nllfact~lre.
According to one aspect of the present invention there is provided a mitre joint comprising t-wo workpieces allanged at an angle and abutting end to end along a line of juncture bi.~ecting the angle, a hole eY~Pnding through one wo.~:ece and into the other, across the line of junclu~, a screw in the hole, joining the wolk~ieePs, the head of the screw being count~ lk and a dowel in the hole behind the screw.
The screw extends across the joint and forms a strong coupling that wiU not be disturbed by imm~ te h~n-lling after the joint is made or, in the long term, by changes in hllmi~ity and te,npe.ature. The dowel plug conceals the screw f~tenPr and is itself hardly noticeable as the end of the dowel is trimm~ flush with the edge of the workpiece.
According to another aspect of the present invention there is provided a method of pro~ucing a mitre joint in which two elongate workpieces are joined end to end ~- 211~Q9~
at an angle along a line of juncture that bisects the angle between the two workpieces, said method compri~in-:
all~nging the workri~s end to end at said angle;
drilling a hole through one workp:~ce and into the other, across the line of juncture;
driving a screw into said hole to join the two workpieces;
inserting a dowel into said hole behind the screw; and !.;----nin_ the dowel.
This method lends itself to aulol"ated production.
In a prer~lr~d embodiment of the method there is provided a method of joining two wc 1~ r~s at a plcclete~ in~ angle with a mitre joint having a line of juncture that bisects the p~ete-~ ed angle, said method compri~ing:
s~u-;nP the workri.ooes on a moving support with the workpieces arranged end to end at the predetermin~ angle;
advancing the workpieces and the support to a first station;
driving a drill at the first station to form a hole through one of the workpi~s and into the other of the Wol~ cces, across the line of jur~tule;
a~lvancing the support to a second station;
in~l ling a screw at the second station into the hole;
o~e,aling a scr~wd~ er at the second station to drive the screw into the hole to join the two workpieces;
advancing the support to a third station;
ins~lling a dowel at the third station into the hole, behind the screw;
advancing the support to a fourth station; and 21i40Y9 ;ng the dowel at the fourth station.
According to a further aspect of the present invention there is provided a~palalus for ~ECU.;i~g two workpieces together at an angle along a line of jwl~lu bi~ting the angle, the appala~us comprising:
a s~lppoll, c1zn.pinP means for cl~llpillg the wu.kl icces on the support with the workpieces a~l~ ged at said angle;
support advancing means for advancing the support sequentially to a plurality of work st~tions;
a first work station comprising a drill and a means for driving the drill against the workpi~s to form a hole through one of the workpieces and into the other, across the line of jùn~;tu~
a second work station compri~ing a screw insertion means for inserting a screw into the hole and driving the screw into the hole to join the two workpi~es;
a third work station comprising dowel insertion means for inserting the dowel into the hole, behind the screw; and a fourth work station comprising dowel trimming means for l.;n~...;ng the dowel.
In the accolnpall~,ng drawings, which ilhl~tr~e an exemplary embodiment of the present ihlvell~ion:
Figure 1 ;11IJS~ eS a frame constructed according to the present invention;
Figure 2 is a cross sec~ion of one corner of the frame;
- 211~0~9 Figure 3 is a s~h~ l;c view of an app~dlus for manuf~tlJring the frame.
Referri~ to the accGll,panyilg drawings, Figure 1 illustrates a p~n~1~d cu~o~d door 6. The door has a frame 8 composed of four edge members 10, 12, 14 and 16, and a centre panel 18. The side memhP,rs meet at mitred corners 20, 22, 24 and 26.
The four mitred corners are all the same so that only one will be described in detail in the following.
Figure 2 is a cross-section of the corner 20 between the members 12 and 14.
The ends 28 and 30 of the ...e~..he ~ 12 and 14 are cut off at angles so as to meet along a line of juncture 32 that bisects the right angle between the two members. A hole 34 eYtends through the ..~el,lber 12 and into the m~,mber 14, perpendicular to and across the line of junc;lu~ 32. The outer end 35 of the hole is co~ '*~u~-k. A screw 36 is driven into the hole to join the two frame ..~..be~s. The screw head 38 is set into thecounte,~unk outer end 35 of the hole 34. A dowel 40 is inserted in the hole behind the screw head 38 and is tnmm~ flush with the edge of the ...~..be~ 12. In this embo~imPnt, before assembly a layer of adhesive 42 is applied to one or both of the end faces 28 and 30 of the two m~mbers. This serves not only to allpm~nt the strength of the joint but also to fill any irregu1~riti~s between the ends of the two pieces.
An app~tus for the aulG-~atic production of a joint of this sort is ill~lsl~t~
in Figure 3. As ill~lstr~t~ in that drawing, the ~pp~ 44 inc~ll)des a support table 46 cal,,~ ing a jig in the form of a fence 48 for ~ligning the workI-:^c~-s, A hold down clamp 50 is mounted on the table and clamps the two workpieces 12 and 14 onto the table.
The support table is advanced stepwise past a sequence of work stations to form the joint. The first station is a drilling station 52 where a drill 54 drives a drill bit 56 211~09g - s -into the edge of the workpi~e 12, and through the workpiece 12 into the workpiece 14 t~
form the hole 34 with its count~ Jnk outer end 35. The second station is a Scl~;Wing station 58 where a supply of screws is held in a mag~7ine 60. A screw feeder 62 delivers screws one by one from the m~7.ine to a screw driver 64 that drives the screws into the hole 34 to join the two workpieces.
The third work station is a dowel insertion station 66 which has a dowel m~7ine 68 holding a supply of dowels. A dowel feeder 70 delivers the dowels one by one from the dowel ma~7ine to a dowel insertion gun 72. The insertion gun drives a dowel into the hole 34 behind the screw.
The final work station is a trimming station 74 that int ludes a cut-off saw 76 for cutting off the end of the dowel 40 projecting from the edge face of the workpiece 12 and sander 78 for s~ndin~ the end of a dowel to a smooth, finiched surface flush with the edge of the wolhl):ece 12.
Wo ~ cc~s leaving this au~"~ated apl)~atus may be h~n-llPd i,.""ff~ ~y without waiting for the setting or the curing of adhesive.
While one embo~iment of the invention has been described in the foregoil~g, the invention is not limited to that embo~iment Other embodimPnts are possible and are inten~ to be included within the scope of this applit~til n. The invention should be construed as limited solely by the scope of the appended claims.
The present invention relates to the joining of wood and more particularly to mitre joints and their pro~uction Mitre joints are commonly used in frames, for ~...p'e in the frames of panel doors for cab~ets and the like. These joints are formed by cutting the workpiece ends to mate along a line of junclule that bisects the angle b~wæn the workpieces, usuaUy equally. The workpi~Pces are joined with adhesive and dowels or splines set into the workI)ie~es to bridge the line of juncture. This conventional glued and doweled joint is subject to loosening and parting owing to changes in humidity and te~ erature. It is difficult to make, and the joint must be clamped until the glue is fully set. The prior art joint does not lend itself to high speed or ~u~~ ed pro~ucti-n.
The present invention relates to novel mitre joints that mitig~t~P these problems and to me~ho~ls and appa~alus for their m~nllfact~lre.
According to one aspect of the present invention there is provided a mitre joint comprising t-wo workpieces allanged at an angle and abutting end to end along a line of juncture bi.~ecting the angle, a hole eY~Pnding through one wo.~:ece and into the other, across the line of junclu~, a screw in the hole, joining the wolk~ieePs, the head of the screw being count~ lk and a dowel in the hole behind the screw.
The screw extends across the joint and forms a strong coupling that wiU not be disturbed by imm~ te h~n-lling after the joint is made or, in the long term, by changes in hllmi~ity and te,npe.ature. The dowel plug conceals the screw f~tenPr and is itself hardly noticeable as the end of the dowel is trimm~ flush with the edge of the workpiece.
According to another aspect of the present invention there is provided a method of pro~ucing a mitre joint in which two elongate workpieces are joined end to end ~- 211~Q9~
at an angle along a line of juncture that bisects the angle between the two workpieces, said method compri~in-:
all~nging the workri~s end to end at said angle;
drilling a hole through one workp:~ce and into the other, across the line of juncture;
driving a screw into said hole to join the two workpieces;
inserting a dowel into said hole behind the screw; and !.;----nin_ the dowel.
This method lends itself to aulol"ated production.
In a prer~lr~d embodiment of the method there is provided a method of joining two wc 1~ r~s at a plcclete~ in~ angle with a mitre joint having a line of juncture that bisects the p~ete-~ ed angle, said method compri~ing:
s~u-;nP the workri.ooes on a moving support with the workpieces arranged end to end at the predetermin~ angle;
advancing the workpieces and the support to a first station;
driving a drill at the first station to form a hole through one of the workpi~s and into the other of the Wol~ cces, across the line of jur~tule;
a~lvancing the support to a second station;
in~l ling a screw at the second station into the hole;
o~e,aling a scr~wd~ er at the second station to drive the screw into the hole to join the two workpieces;
advancing the support to a third station;
ins~lling a dowel at the third station into the hole, behind the screw;
advancing the support to a fourth station; and 21i40Y9 ;ng the dowel at the fourth station.
According to a further aspect of the present invention there is provided a~palalus for ~ECU.;i~g two workpieces together at an angle along a line of jwl~lu bi~ting the angle, the appala~us comprising:
a s~lppoll, c1zn.pinP means for cl~llpillg the wu.kl icces on the support with the workpieces a~l~ ged at said angle;
support advancing means for advancing the support sequentially to a plurality of work st~tions;
a first work station comprising a drill and a means for driving the drill against the workpi~s to form a hole through one of the workpieces and into the other, across the line of jùn~;tu~
a second work station compri~ing a screw insertion means for inserting a screw into the hole and driving the screw into the hole to join the two workpi~es;
a third work station comprising dowel insertion means for inserting the dowel into the hole, behind the screw; and a fourth work station comprising dowel trimming means for l.;n~...;ng the dowel.
In the accolnpall~,ng drawings, which ilhl~tr~e an exemplary embodiment of the present ihlvell~ion:
Figure 1 ;11IJS~ eS a frame constructed according to the present invention;
Figure 2 is a cross sec~ion of one corner of the frame;
- 211~0~9 Figure 3 is a s~h~ l;c view of an app~dlus for manuf~tlJring the frame.
Referri~ to the accGll,panyilg drawings, Figure 1 illustrates a p~n~1~d cu~o~d door 6. The door has a frame 8 composed of four edge members 10, 12, 14 and 16, and a centre panel 18. The side memhP,rs meet at mitred corners 20, 22, 24 and 26.
The four mitred corners are all the same so that only one will be described in detail in the following.
Figure 2 is a cross-section of the corner 20 between the members 12 and 14.
The ends 28 and 30 of the ...e~..he ~ 12 and 14 are cut off at angles so as to meet along a line of juncture 32 that bisects the right angle between the two members. A hole 34 eYtends through the ..~el,lber 12 and into the m~,mber 14, perpendicular to and across the line of junc;lu~ 32. The outer end 35 of the hole is co~ '*~u~-k. A screw 36 is driven into the hole to join the two frame ..~..be~s. The screw head 38 is set into thecounte,~unk outer end 35 of the hole 34. A dowel 40 is inserted in the hole behind the screw head 38 and is tnmm~ flush with the edge of the ...~..be~ 12. In this embo~imPnt, before assembly a layer of adhesive 42 is applied to one or both of the end faces 28 and 30 of the two m~mbers. This serves not only to allpm~nt the strength of the joint but also to fill any irregu1~riti~s between the ends of the two pieces.
An app~tus for the aulG-~atic production of a joint of this sort is ill~lsl~t~
in Figure 3. As ill~lstr~t~ in that drawing, the ~pp~ 44 inc~ll)des a support table 46 cal,,~ ing a jig in the form of a fence 48 for ~ligning the workI-:^c~-s, A hold down clamp 50 is mounted on the table and clamps the two workpieces 12 and 14 onto the table.
The support table is advanced stepwise past a sequence of work stations to form the joint. The first station is a drilling station 52 where a drill 54 drives a drill bit 56 211~09g - s -into the edge of the workpi~e 12, and through the workpiece 12 into the workpiece 14 t~
form the hole 34 with its count~ Jnk outer end 35. The second station is a Scl~;Wing station 58 where a supply of screws is held in a mag~7ine 60. A screw feeder 62 delivers screws one by one from the m~7.ine to a screw driver 64 that drives the screws into the hole 34 to join the two workpieces.
The third work station is a dowel insertion station 66 which has a dowel m~7ine 68 holding a supply of dowels. A dowel feeder 70 delivers the dowels one by one from the dowel ma~7ine to a dowel insertion gun 72. The insertion gun drives a dowel into the hole 34 behind the screw.
The final work station is a trimming station 74 that int ludes a cut-off saw 76 for cutting off the end of the dowel 40 projecting from the edge face of the workpiece 12 and sander 78 for s~ndin~ the end of a dowel to a smooth, finiched surface flush with the edge of the wolhl):ece 12.
Wo ~ cc~s leaving this au~"~ated apl)~atus may be h~n-llPd i,.""ff~ ~y without waiting for the setting or the curing of adhesive.
While one embo~iment of the invention has been described in the foregoil~g, the invention is not limited to that embo~iment Other embodimPnts are possible and are inten~ to be included within the scope of this applit~til n. The invention should be construed as limited solely by the scope of the appended claims.
Claims (17)
1. A method of producing a mitre joint in which two elongate workpieces are joined end to end at an angle along a line of juncture that bisects the angle between the two workrpieces, said method comprising:
arranging the workpieces end to end at said angle;
drilling a hole through one workpiece and into the other, across the line of juncture;
driving a screw into said hole to join the two workpieces;
inserting a dowel into said hole behind the screw; and trimming the dowel.
arranging the workpieces end to end at said angle;
drilling a hole through one workpiece and into the other, across the line of juncture;
driving a screw into said hole to join the two workpieces;
inserting a dowel into said hole behind the screw; and trimming the dowel.
2. A method according to Claim 1 including applying adhesive to at least one of the end faces before arranging the workpieces end to end.
3. A method of joining two workpieces at a predetermined angle with a mitre joint having a line of juncture that bisects the predetermined angle, said method comprising securing the workpieces on a moving support to with the workpieces arranged end to end at the predetermined angle;
advancing the workpieces and the support to a first station;
driving a drill at the first station to form a hole through one of the workpieces and into the other of the workpieces, across the line of juncture;
advancing the support to a second station;
inserting a screw at the second station into the hole;
operating a screwdriver at the second station to drive the screw into the hole to join the two workpieces;
advancing the sport to a third station;
inserting a dowel at the third station into the hole, behind the screw;
advancing the support to a fourth station; and trimming the dowel at the fourth station.
advancing the workpieces and the support to a first station;
driving a drill at the first station to form a hole through one of the workpieces and into the other of the workpieces, across the line of juncture;
advancing the support to a second station;
inserting a screw at the second station into the hole;
operating a screwdriver at the second station to drive the screw into the hole to join the two workpieces;
advancing the sport to a third station;
inserting a dowel at the third station into the hole, behind the screw;
advancing the support to a fourth station; and trimming the dowel at the fourth station.
4. A method according to Claim 3 including the preliminary step of applying adhesive to at least one of the workpiece ends before arranging the workpieces end to end on the support.
5. Apparatus for securing two workpieces together at an angle along a line of juncture bisecting the angle, the apparatus comprising:
a support, clamping means for clamping the workpieces on the support with the workpieces arranged at said angle;
support advancing means for advancing the support sequentially to a plurality of work stations;
a first work station comprising a drill and a means for driving the drill against the workpieces to form a hole for one of the workpieces and into the other, across the line of juncture;
a second work station comprising a screw insertion means for inserting a screw into the hole and driving the screw into the hole to join the two workpieces;
a third work station comprising dowel insertion means for inserting the dowel into the hole, behind the screw; and a fourth work station comprising dowel trimming means for trimming the dowel.
a support, clamping means for clamping the workpieces on the support with the workpieces arranged at said angle;
support advancing means for advancing the support sequentially to a plurality of work stations;
a first work station comprising a drill and a means for driving the drill against the workpieces to form a hole for one of the workpieces and into the other, across the line of juncture;
a second work station comprising a screw insertion means for inserting a screw into the hole and driving the screw into the hole to join the two workpieces;
a third work station comprising dowel insertion means for inserting the dowel into the hole, behind the screw; and a fourth work station comprising dowel trimming means for trimming the dowel.
6. Apparatus according to Claim 5 where the support means comprise a table and a jig on the table for aligning the workpieces in a desired alignment.
7. Apparatus according to Claim 6 wherein the clamp means comprise an overhead clamp mounted on the table.
8. Apparatus according to Claim 5 wherein the screw insertion means comprises a screw magazine, a screw feeder for feeding screws one at a time from the magazine, and a screw driver for receiving a screw from the screw driver and driving the screw into the hole.
9. Apparatus according to Claim 5 wherein the dowel insertion means comprise a dowel magazine for holding a plurality of dowels and a dowel feeder means for feeding the dowels one at a time from the magazine and dowel insertion means for receiving a dowel from the dowel feeder means and injecting the dowel into the hole.
10. Apparatus according to Claim 5 wherein the dowel trimming means comprise a dowel cut-off saw and a sander.
11. A mitre joint comprising two workpieces arranged at an angle and abutting end to end along a line of juncture bisecting the angle, a hole extending through one workpiece and into the other, across the line of juncture, a screw in the hole, joining the workpieces, the head of the screw being countersunk and a dowel in the hole behind the screw.
12. A joint according to Claim 11 where the dowel has an outer face flush with the surrounding outer face of the said one workpiece.
13. A mitre joint according to Claim 11 including adhesive joining the workpieces along the line of juncture.
14. A mitre joint according to Claim 11, 12 or 13 wherein the screw is perpendicular to the line of juncture.
15. A frame comprising four workpieces joined at four corners, each corner being a mitre joint comprising a line of juncture between a respective pair of the workpieces, and including a hole extending through one workpiece and into the other, across the line of juncture, a screw in the hole, joining the workpieces, with the head of the screw countersunk, and a dowel in the hole behind the screw.
16. A frame according to Claim 15 wherein the screw is perpendicular to the line of juncture.
17. A cupboard door comprising a panel and a plurality of frame members surrounding the panel, the frame members being joined by mitre joints, each of which comprises two frame members arranged at an angle and abutting end to end along a line of juncture bisecting the angle, a hole extending through one frame member and into the other, across the line of juncture, a screw in the hole, joining the frame members, the head of the screw being countersunk and a dowel in the hole behind the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002114099A CA2114099A1 (en) | 1994-01-24 | 1994-01-24 | Mitre joints in wood frames for doors and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002114099A CA2114099A1 (en) | 1994-01-24 | 1994-01-24 | Mitre joints in wood frames for doors and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2114099A1 true CA2114099A1 (en) | 1995-07-25 |
Family
ID=4152785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002114099A Abandoned CA2114099A1 (en) | 1994-01-24 | 1994-01-24 | Mitre joints in wood frames for doors and the like |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2114099A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1726767A1 (en) * | 2005-05-25 | 2006-11-29 | Scagis s.r.l. | Machine to insert and tighten fixings in predrilled holes to couple mitre cut joining heads of wood or wood-metal profiles in the manufacturing of frames and door/window frames |
| CN115066578A (en) * | 2020-11-10 | 2022-09-16 | 气体运输技术公司 | Method for producing a thermal insulation barrier for a can body |
-
1994
- 1994-01-24 CA CA002114099A patent/CA2114099A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1726767A1 (en) * | 2005-05-25 | 2006-11-29 | Scagis s.r.l. | Machine to insert and tighten fixings in predrilled holes to couple mitre cut joining heads of wood or wood-metal profiles in the manufacturing of frames and door/window frames |
| CN115066578A (en) * | 2020-11-10 | 2022-09-16 | 气体运输技术公司 | Method for producing a thermal insulation barrier for a can body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |