CA1157247A - Metal window and/or door construction - Google Patents
Metal window and/or door constructionInfo
- Publication number
- CA1157247A CA1157247A CA000358689A CA358689A CA1157247A CA 1157247 A CA1157247 A CA 1157247A CA 000358689 A CA000358689 A CA 000358689A CA 358689 A CA358689 A CA 358689A CA 1157247 A CA1157247 A CA 1157247A
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- CA
- Canada
- Prior art keywords
- jig
- sections
- elongate
- members
- resin
- 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.)
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Abstract
ABSTRACT OF THE DISCLOSURE
A thermal break in a metal frame for a door and/or window is provided by moulding and curing thermal barrier material, such as resin, in two parallel, laterally spaced, elongate gaps defined between respective pairs of confronting elongate surfaces of the inner and outer frame elements which when assembled form a box-section member. The gaps are converted into respective mould cavities for the resin by the pressure of shoes against the elements adjacent the respective gaps to close one side thereof, the shoes being removed only after the resin has cured to leave the finished thermal break. The shoes are carried on opposite walls of a laterally expansible tube which is inserted into the box-section and is expanded to press "non-stick"
surfaces of the shoes against the respective gaps ready for the moulding and curing of resin therein, whilst maintaining the gap dimensions. After curing of the resin, the tube is contracted laterally to disengage the shoes and is then withdrawn to leave the finished thermal break.
A thermal break in a metal frame for a door and/or window is provided by moulding and curing thermal barrier material, such as resin, in two parallel, laterally spaced, elongate gaps defined between respective pairs of confronting elongate surfaces of the inner and outer frame elements which when assembled form a box-section member. The gaps are converted into respective mould cavities for the resin by the pressure of shoes against the elements adjacent the respective gaps to close one side thereof, the shoes being removed only after the resin has cured to leave the finished thermal break. The shoes are carried on opposite walls of a laterally expansible tube which is inserted into the box-section and is expanded to press "non-stick"
surfaces of the shoes against the respective gaps ready for the moulding and curing of resin therein, whilst maintaining the gap dimensions. After curing of the resin, the tube is contracted laterally to disengage the shoes and is then withdrawn to leave the finished thermal break.
Description
1157~
B~CKGROUND OF TiiE INVENTI~N
Field o~ the Invention . .
This invention relates to mctal window ancl/or door frames, and particularly to a jig for use in forming a thermal break disposed between the inner and outer parts of a frame.
Description of the P-rior Art Metal eXtruSioT1S, particularly aluminum extrusions, are widely used in the construction of door and/or window frames, because of the advant-ages afforded by the strength, ease of maintenance etc. of the finished con-struction. However, the thermal properties of the metal tend to result in the formation of condensation when one part of the frame is subjected to lower temperatures than are experienced by another part of the frame, e.g. by the side of a door frame exposed to the exterior of a building which tends to be colder than the inner side exposed to the building interior. To combat this, a thermal break is provided between the two parts of the frame~ being in the form of a layer of thermal barrier material, usually a rigid resin~
~ 15724 ~
which cormects the t~,~o parts OI -the ~rame so that there is no direct metal-to--met,l:L contac-t between themO
One widely used rnethod of construc-ting a thermal break is illuc;trated in Figures 1 and 2 of -the accompanyi.ng drawings, and involves the u.se of a one-piece a:Luminium extrusion which comprises the outer elcment 1 of the .erame and the inner elernent
B~CKGROUND OF TiiE INVENTI~N
Field o~ the Invention . .
This invention relates to mctal window ancl/or door frames, and particularly to a jig for use in forming a thermal break disposed between the inner and outer parts of a frame.
Description of the P-rior Art Metal eXtruSioT1S, particularly aluminum extrusions, are widely used in the construction of door and/or window frames, because of the advant-ages afforded by the strength, ease of maintenance etc. of the finished con-struction. However, the thermal properties of the metal tend to result in the formation of condensation when one part of the frame is subjected to lower temperatures than are experienced by another part of the frame, e.g. by the side of a door frame exposed to the exterior of a building which tends to be colder than the inner side exposed to the building interior. To combat this, a thermal break is provided between the two parts of the frame~ being in the form of a layer of thermal barrier material, usually a rigid resin~
~ 15724 ~
which cormects the t~,~o parts OI -the ~rame so that there is no direct metal-to--met,l:L contac-t between themO
One widely used rnethod of construc-ting a thermal break is illuc;trated in Figures 1 and 2 of -the accompanyi.ng drawings, and involves the u.se of a one-piece a:Luminium extrusion which comprises the outer elcment 1 of the .erame and the inner elernent
2 of the frame, the elements 1 and 2 having respective confronting surfaces 3 and 4 which are spaced apart by a thin web 5 which at this stage connects the elements 1 and 2. In other words, there i.s formed between the elemen-ts 1 and 2 a shaped channel of which the walls are defined by the confronti..ng su,faces 3 and ~r ~ and the web 5. The shaped channel is then filled with a resin material, and when this has cured and thus rigidi~ied, the base of the channel constituted by the web 5 is removed by a machining operation to leave the construc-tion shown in Figure 2 where the resin materlal 5 constitu.tes -the sole connection between the parts 1 and 20 Conveniently the sur~aces 3 and are undercut as shown at 7, to provide a secure connection between the resin rnaterial 6 and the elements and 2.
Although the method descrlhed above is suitable to produce a construction such as that shown in Figure ~ ~ 5 7~'1 7 2, there is a need for a box-like constructioll such as that shown in Figure 3 of the accompanying drawings, where the elements 1 and 2 are connected by a thermal break comprising two parallel stri.ps of resin 6 and 6A, disposcd in opposite side walls of a box-like section. I~requently this box-like construc-tion is required in lengths of up to 5 metres, and it will be readily appreciated therefore that if the method described with reference to Figures 1 and 2 is applied to the box-like construction, the appearance of the construction after the formation of the thermal breaks 6 and 6A would be as is shown in Figure of the accompanying drawings, requiring a difficult if not impossible machin-ing operation to remove the unwanted webs 5 and 5A inside the box section.
The object of the present invention is to provide means for forming a thermal break which does not require the subsequent removal of unwanted metal webs, and which is therefore particularly suitable for the production of the box-like construction shown in Figure 3 of the accompanying drawings.
SUM~IARY OF THE INVENTION
. _ .
According to the present invention, there is provided a jig for use in securing two elongate sections together by two spaced thermal barriers to form a hollow member, comprlsing a pair of elongate members to be located side-by-side ~ithin the sections between the locations where the thermal barriers are to be formed, each elongate member having mould base means extend-ing along an outer side thereof to form with spaced opposing parts of the two elongate sections, mould cavities to receive thermal barrier material means to expand the pair of members of the jig laterally to engage the mould base means with the sections to form ~B ,~.
~ ~57~4~
the re~uired moul~l cavities and locating means on -the mcmbe-rs o-f the jig Eor engaging co-operating locatlng means on the sections on e:ither side~ of the mould cavities to adjust the spac:ing of the sections in response to said lateral expansion of the jig to a requisite distance to create, after filling of the mould cavities with thermal barrier material, a hollow member of the required cross-sectional si~e.
BRIEF DESCRIPTION OF '~IE DRAWINGS
Figures 1 and 2 show various stages in the construction of a thermal break according to a known method, as described hereinabove;
Figure 3 shows a cross-sectional view of a typical box-section member incorporating a thermal break;
~ ~72~Y7 Figure 4 shows an intermedi.ate stage in the construction of a bo~-section member such as that shown in Figure 3, using a similar method to that used in E'igures 1 and 2;
Figure 5 shows an embodiment of apparatus according to the invention at an intermediate stage during the construction of a box-section member incorporating a thermal break such as that shown in Figure 3;
Figure 6 shows a perspective view of the S ~
~ :~57~4~
expallsible tube ~nd pressure bag used in the app,~atus sho~,~
in Figure ~, . ~igure 7 o~ ~he draw:in~ shows an al~erna~i.v~
construc~;ion of expansible tube;
Figure 8 of the accompanying drawings sho~ls a modified pair of sections to be asbemb~ed w~th the thermal break therebetween; and Figure 9 is a "Blown-up" view of part o~ one of the sections shown in Fi~ure 8.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
It should be noted that throughout the ~igures of the drawings, like parts are indicated by like reference numerals, for easy identification.
The known method of forming a thermal break comprising a single strip of resin material, as shown in ~igures 1 and 2, has already been described herein, as well as the difficulties in adapting this method in producing a thermal break in a box-section member requiring two closely spaced parallel strips of resin material, as shown in ~'igure 3.
Considering Figures 5 and 6 9 accoraing to a preferred embodiment of the present invention, an elongate box-section member is formed by assembling two independent metal extrusions, here shown as elements 1 and 2, alongside one another, with respecti.ve pairs of confronting surfaces 3,4 and 3h,~ defining respecti-~re elongate gaps between the elements 1 and 1 ~ 5^~
2, th~ ~aps l~ei~lg.Located ~-l';he side walls Or ~he box-se~ion m~nber, Ea~h sur~ace 3, 3A, llan~ A îs pre~erab:ly ~.~le~rcut as bei'ore a~ sho~ at 7. An e~pansible tube ~ is inserte~ bet~leen the elementsl and 2, so l;hat respec-tive shaped shoes 9 and 10 carried ,on opposite sides o-f the tube 8 are allgned with the inner open sides of the gaps between the pairs of surfaces 3,~ and 3~,4A.
~ he tube is constructed from -two elongate channel members ll and 12, which are nested together in the ma2~ner illustrated in'~igures 5 and 6, to form the tube which i.s open at both ends, and which is expansible in one lateral direction only by relative lateral sliding movement of channel member 11 into and out of char~el member 12. ~he shoes 9,10 are moullted on the sides ofthetube ~ormed by the base walls of the respective channel members 12 and llO
It will be seen that with this construction of the tube 8, the exterior dimension of the tube in a lateral direction perpendicular to the di.rection of the relative sliding movement between the channel members 11 and 12 remains substantially constant during expansion and contraction ofthetube, so that the tube 8 can be used to maintain the desired gap width once it is inserted within the box-section member.
Once the tube is inserted in the box-section member with the shoes aligned as iLlustrated in ~igure 5, the tube is expanded in a manner described.
in deta.il below, to press the shoes into engagement I ~ S7~
,~
Wit~l the ~:lelllenls l and 2 adjacen-t the inner sides of the respective ~ap~, so that e/lch shoe closes off one side of the respectivc ~rap, and convert~ i-t into a mo~lld cav:ity into which the thermal barrier re~in material can be injected. Because the resin is introduced into the mould cavities as a fluid, the elemen-l;.~ l,2 are first arranged so that one of the mould cavities is uppermost, and the res~.n is poured into this mould cavity. After a few minutes, when thc resin has hardened sufficiently, the elements 1,2 are turned over so -that the other mould cavity can be filled ~.rith resin also. The resin 6,6A in each mould cavity is allowed to set i.e. cure, after which the shoes are retracted from the elements 1,2 by contraction of the tvhe 8, after which the tube 8 and the shoes 9,10 are removed from the now completed box~-section .
Preferably the surfaces 13 of the shoes 95 lO which engage the elements l and 2 and which conskitute the respective mould cavities are hollow, each surface having a f'lat base with ver~ shallow inclined side walls rising theref'rom. The surf'aces of the elements l and 2 which the inclined side walls engage are correspondi.ngly under-cut to facilitate the correct relative locations of the elements l and 2 during f'illing and curing of the resin 6, 6A
1 ~ 572~ ~
. ~ .
within ~i1e mou~.~ cavi~iec. r~O faci:titate the ready remova] o~ the shoes 9 t 10 from the cured resin material, the surfaces 13 are prcferab].y "non-stick", being -for example treated wi~h a coating of P'~FE or silicone.
The relative movement produced between the shoes 9 and 10 during their engagement with and disengagemerlt from the elements 1 and 2 during the me-thod described above, can be achieved in any suitable way. In the embodiment illustrated in ~igures 5 and 6, where the shoes are mounted on the expansible -tube, expansion and contraction of the tube may be per~ormed by for example a mechanical linkage, or a series of opposed inclined planes~ or, as in the illustrated embodiment, using hydraulic or pneumatic pressure operated means, .
preferably the latter. In the illustrated embodiment, an elongate pressure bag 14~ having a closed end 15 and a valve 16 located in its opposite end is di.sposed within the tube 8. The pressure inside the bag is suitably varied to produce the desired contraction and expansion of the -tube 8, whether using positive or negative air pressurc inside the bag to produce expansion of the tube.
- -J1~7 /o ....
~ ;gure 7 shows an alternative e.~pansible tube construction in which the shoes 9, 10 are rormed iritegrally with the channel members ~ nd 1~ respectively.
Also the inner sides o~ the bases of the channel members are formed with part cylindrical seats 17, 18 to support the elongate pressure bag (not shown). , The elements are otherwise substantially the same as the elements previously described. The method of use Or the expansible tube is llkewise similar to the 10 method used for the tube described earlier except that since the ~hoes 9, 10 are formed integrally with the channels, the tube as a whole is inserted ln and extracted from the sections being as'sembled.
~igure 8 o~ the drawing shows an alternative pair of sections to be assembled with a thermal break between the sections. The sections are generally similar to the elements 1 and 2 previously described and like parts have been allotted the same reference nun.erals. As prevlously described, the sections have confronting surfaces 3, 4 and 3A, 4A defini,ng respectively the elongate gaps between the elements 1 and 2 to be filled with a resin to bond the two elements together whilst providing a thermal break between the elements. The expansib]e tube 8 to be inserted between the elements is intended to be a close 5 7~ ~ ~
~.
sliding filJ between the elelllerlts and the wall o~ the element 1 between ~he surraces 4 is formed on the inner side thereof w:ith ra:ised :Lands lA irnrnediately adjacent the surfaces (s~e Fi~ure 9) against ~hich the outer ends of the integral shoes on the channel members 11, 12 engage whilst holding the elements 1 and 2 for the filling of the gaps Ll, LIA As best seen in the enlarged vie~r 9A of the drawings the land lA merges with the rest of the wall of` the section through a 10 shallow inclined ramp. When the resin in the gaps 4~ 4A has set and it is desired to rernove the expansible tube and shoes, the inflatable ~ag is de-flated and the sections 11, 12 of the tube are pressed towards each other. Once the outer ends of the tube are thus 15 retracted from the lands lA the tube should then be sufficiently loose between the sections 1 and 2 to be readily extracted~ The provision of the lands enables the tube to be loosened between the sections even though the sections may be have been drawn towards each other 20 slightly by the setting of the resin in the gaps 4, 4A
which may contract slightly on setting. The provision of the ramps leading u~ the lands assists in guiding the corners of the expandible tube into engagement with the lands imMediately adjacent the surfaces 4, 4A when the 25 tube is expanded to hold the sections for filling o~
the gaps. qhe arranoement is otherwise similar to that previously described.
.
Although the method descrlhed above is suitable to produce a construction such as that shown in Figure ~ ~ 5 7~'1 7 2, there is a need for a box-like constructioll such as that shown in Figure 3 of the accompanying drawings, where the elements 1 and 2 are connected by a thermal break comprising two parallel stri.ps of resin 6 and 6A, disposcd in opposite side walls of a box-like section. I~requently this box-like construc-tion is required in lengths of up to 5 metres, and it will be readily appreciated therefore that if the method described with reference to Figures 1 and 2 is applied to the box-like construction, the appearance of the construction after the formation of the thermal breaks 6 and 6A would be as is shown in Figure of the accompanying drawings, requiring a difficult if not impossible machin-ing operation to remove the unwanted webs 5 and 5A inside the box section.
The object of the present invention is to provide means for forming a thermal break which does not require the subsequent removal of unwanted metal webs, and which is therefore particularly suitable for the production of the box-like construction shown in Figure 3 of the accompanying drawings.
SUM~IARY OF THE INVENTION
. _ .
According to the present invention, there is provided a jig for use in securing two elongate sections together by two spaced thermal barriers to form a hollow member, comprlsing a pair of elongate members to be located side-by-side ~ithin the sections between the locations where the thermal barriers are to be formed, each elongate member having mould base means extend-ing along an outer side thereof to form with spaced opposing parts of the two elongate sections, mould cavities to receive thermal barrier material means to expand the pair of members of the jig laterally to engage the mould base means with the sections to form ~B ,~.
~ ~57~4~
the re~uired moul~l cavities and locating means on -the mcmbe-rs o-f the jig Eor engaging co-operating locatlng means on the sections on e:ither side~ of the mould cavities to adjust the spac:ing of the sections in response to said lateral expansion of the jig to a requisite distance to create, after filling of the mould cavities with thermal barrier material, a hollow member of the required cross-sectional si~e.
BRIEF DESCRIPTION OF '~IE DRAWINGS
Figures 1 and 2 show various stages in the construction of a thermal break according to a known method, as described hereinabove;
Figure 3 shows a cross-sectional view of a typical box-section member incorporating a thermal break;
~ ~72~Y7 Figure 4 shows an intermedi.ate stage in the construction of a bo~-section member such as that shown in Figure 3, using a similar method to that used in E'igures 1 and 2;
Figure 5 shows an embodiment of apparatus according to the invention at an intermediate stage during the construction of a box-section member incorporating a thermal break such as that shown in Figure 3;
Figure 6 shows a perspective view of the S ~
~ :~57~4~
expallsible tube ~nd pressure bag used in the app,~atus sho~,~
in Figure ~, . ~igure 7 o~ ~he draw:in~ shows an al~erna~i.v~
construc~;ion of expansible tube;
Figure 8 of the accompanying drawings sho~ls a modified pair of sections to be asbemb~ed w~th the thermal break therebetween; and Figure 9 is a "Blown-up" view of part o~ one of the sections shown in Fi~ure 8.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
It should be noted that throughout the ~igures of the drawings, like parts are indicated by like reference numerals, for easy identification.
The known method of forming a thermal break comprising a single strip of resin material, as shown in ~igures 1 and 2, has already been described herein, as well as the difficulties in adapting this method in producing a thermal break in a box-section member requiring two closely spaced parallel strips of resin material, as shown in ~'igure 3.
Considering Figures 5 and 6 9 accoraing to a preferred embodiment of the present invention, an elongate box-section member is formed by assembling two independent metal extrusions, here shown as elements 1 and 2, alongside one another, with respecti.ve pairs of confronting surfaces 3,4 and 3h,~ defining respecti-~re elongate gaps between the elements 1 and 1 ~ 5^~
2, th~ ~aps l~ei~lg.Located ~-l';he side walls Or ~he box-se~ion m~nber, Ea~h sur~ace 3, 3A, llan~ A îs pre~erab:ly ~.~le~rcut as bei'ore a~ sho~ at 7. An e~pansible tube ~ is inserte~ bet~leen the elementsl and 2, so l;hat respec-tive shaped shoes 9 and 10 carried ,on opposite sides o-f the tube 8 are allgned with the inner open sides of the gaps between the pairs of surfaces 3,~ and 3~,4A.
~ he tube is constructed from -two elongate channel members ll and 12, which are nested together in the ma2~ner illustrated in'~igures 5 and 6, to form the tube which i.s open at both ends, and which is expansible in one lateral direction only by relative lateral sliding movement of channel member 11 into and out of char~el member 12. ~he shoes 9,10 are moullted on the sides ofthetube ~ormed by the base walls of the respective channel members 12 and llO
It will be seen that with this construction of the tube 8, the exterior dimension of the tube in a lateral direction perpendicular to the di.rection of the relative sliding movement between the channel members 11 and 12 remains substantially constant during expansion and contraction ofthetube, so that the tube 8 can be used to maintain the desired gap width once it is inserted within the box-section member.
Once the tube is inserted in the box-section member with the shoes aligned as iLlustrated in ~igure 5, the tube is expanded in a manner described.
in deta.il below, to press the shoes into engagement I ~ S7~
,~
Wit~l the ~:lelllenls l and 2 adjacen-t the inner sides of the respective ~ap~, so that e/lch shoe closes off one side of the respectivc ~rap, and convert~ i-t into a mo~lld cav:ity into which the thermal barrier re~in material can be injected. Because the resin is introduced into the mould cavities as a fluid, the elemen-l;.~ l,2 are first arranged so that one of the mould cavities is uppermost, and the res~.n is poured into this mould cavity. After a few minutes, when thc resin has hardened sufficiently, the elements 1,2 are turned over so -that the other mould cavity can be filled ~.rith resin also. The resin 6,6A in each mould cavity is allowed to set i.e. cure, after which the shoes are retracted from the elements 1,2 by contraction of the tvhe 8, after which the tube 8 and the shoes 9,10 are removed from the now completed box~-section .
Preferably the surfaces 13 of the shoes 95 lO which engage the elements l and 2 and which conskitute the respective mould cavities are hollow, each surface having a f'lat base with ver~ shallow inclined side walls rising theref'rom. The surf'aces of the elements l and 2 which the inclined side walls engage are correspondi.ngly under-cut to facilitate the correct relative locations of the elements l and 2 during f'illing and curing of the resin 6, 6A
1 ~ 572~ ~
. ~ .
within ~i1e mou~.~ cavi~iec. r~O faci:titate the ready remova] o~ the shoes 9 t 10 from the cured resin material, the surfaces 13 are prcferab].y "non-stick", being -for example treated wi~h a coating of P'~FE or silicone.
The relative movement produced between the shoes 9 and 10 during their engagement with and disengagemerlt from the elements 1 and 2 during the me-thod described above, can be achieved in any suitable way. In the embodiment illustrated in ~igures 5 and 6, where the shoes are mounted on the expansible -tube, expansion and contraction of the tube may be per~ormed by for example a mechanical linkage, or a series of opposed inclined planes~ or, as in the illustrated embodiment, using hydraulic or pneumatic pressure operated means, .
preferably the latter. In the illustrated embodiment, an elongate pressure bag 14~ having a closed end 15 and a valve 16 located in its opposite end is di.sposed within the tube 8. The pressure inside the bag is suitably varied to produce the desired contraction and expansion of the -tube 8, whether using positive or negative air pressurc inside the bag to produce expansion of the tube.
- -J1~7 /o ....
~ ;gure 7 shows an alternative e.~pansible tube construction in which the shoes 9, 10 are rormed iritegrally with the channel members ~ nd 1~ respectively.
Also the inner sides o~ the bases of the channel members are formed with part cylindrical seats 17, 18 to support the elongate pressure bag (not shown). , The elements are otherwise substantially the same as the elements previously described. The method of use Or the expansible tube is llkewise similar to the 10 method used for the tube described earlier except that since the ~hoes 9, 10 are formed integrally with the channels, the tube as a whole is inserted ln and extracted from the sections being as'sembled.
~igure 8 o~ the drawing shows an alternative pair of sections to be assembled with a thermal break between the sections. The sections are generally similar to the elements 1 and 2 previously described and like parts have been allotted the same reference nun.erals. As prevlously described, the sections have confronting surfaces 3, 4 and 3A, 4A defini,ng respectively the elongate gaps between the elements 1 and 2 to be filled with a resin to bond the two elements together whilst providing a thermal break between the elements. The expansib]e tube 8 to be inserted between the elements is intended to be a close 5 7~ ~ ~
~.
sliding filJ between the elelllerlts and the wall o~ the element 1 between ~he surraces 4 is formed on the inner side thereof w:ith ra:ised :Lands lA irnrnediately adjacent the surfaces (s~e Fi~ure 9) against ~hich the outer ends of the integral shoes on the channel members 11, 12 engage whilst holding the elements 1 and 2 for the filling of the gaps Ll, LIA As best seen in the enlarged vie~r 9A of the drawings the land lA merges with the rest of the wall of` the section through a 10 shallow inclined ramp. When the resin in the gaps 4~ 4A has set and it is desired to rernove the expansible tube and shoes, the inflatable ~ag is de-flated and the sections 11, 12 of the tube are pressed towards each other. Once the outer ends of the tube are thus 15 retracted from the lands lA the tube should then be sufficiently loose between the sections 1 and 2 to be readily extracted~ The provision of the lands enables the tube to be loosened between the sections even though the sections may be have been drawn towards each other 20 slightly by the setting of the resin in the gaps 4, 4A
which may contract slightly on setting. The provision of the ramps leading u~ the lands assists in guiding the corners of the expandible tube into engagement with the lands imMediately adjacent the surfaces 4, 4A when the 25 tube is expanded to hold the sections for filling o~
the gaps. qhe arranoement is otherwise similar to that previously described.
.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A jig for use in securing two elongate sections together by two spaced thermal barriers to form a hollow member, comprising a pair of elongate members to be located side-by-side within the sections between the locations where the thermal barriers are to be formed, each elongate member having mould base means extending along an outer side thereof to form with spaced opposing parts of the two elongate sections, mould cavities to receive thermal bar-rier material means to expand the pair of members of the jig later-ally to engage the mould base means with the sections to form the required mould cavities and locating means on the members of the jig for engaging co-operating locating means on the sections on either side of the mould cavities to adjust the spacing of the sections in response to said lateral expansion of the jig to a requisite distance to create, after filling of the mould cavities with thermal barrier material, a hollow member of the required cross-sectional size.
2. A jig as claimed in claim 1 wherein the locating means on the members of the jig for adjusting the spacing of the sections comprise inclined face means disposed on either side of the base means for engaging corresponding inclined faces on the two sections.
3. A jig as claimed in claim 2 wherein the inclined face means rise above the base means on either side thereof.
4. A jig as claimed in claim 1 wherein the elongate members are adapted to locate between a pair of spaced abutments on one of the elongate sections to prevent lateral expansion of the members beyond the position in which the sections will have reached their required spacing as determined by the locating means.
5. A jig as claimed in claim 1 wherein the mould base means are formed on elongate shoes separate from and lying in abutment with the laterally expansible elongate members.
6. A jig as claimed in claim 1 wherein the elongate members comprise two elongate U-shaped channel members assembled with the side walls of one channel member extending into the other channel member and means being provided within the channels to act on the bases thereof to effect lateral expansion of the channels with respect to each other.
7. A jig as claimed in claim 6 wherein the means to expand the members comprise an elongate flexible bag disposed between said channels and means for inflating the bag and releasing pres-sure from the bag for expansion and contraction of the members.
8. A jig as claimed in claim 7 wherein the elongate flex-ible bag is circular in cross section and each channel section has a part cylindrical bearing surface at the base thereof against which the circular bag bears.
9. A jig as claimed in claim 1 wherein the surfaces of the base means are coated with "non-stick" material to facilitate release of the jig from the pair of sections after formation of the thermal barriers between the sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000358689A CA1157247A (en) | 1980-08-20 | 1980-08-20 | Metal window and/or door construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000358689A CA1157247A (en) | 1980-08-20 | 1980-08-20 | Metal window and/or door construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1157247A true CA1157247A (en) | 1983-11-22 |
Family
ID=4117700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000358689A Expired CA1157247A (en) | 1980-08-20 | 1980-08-20 | Metal window and/or door construction |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1157247A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11035167B1 (en) | 2020-03-03 | 2021-06-15 | Quaker Window Products Co. | Thermally enhanced extrudate for windows and doors |
| US11946313B2 (en) | 2020-09-04 | 2024-04-02 | Quaker Window Products Co. | Fenestration unit including slidable glass panels |
-
1980
- 1980-08-20 CA CA000358689A patent/CA1157247A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11035167B1 (en) | 2020-03-03 | 2021-06-15 | Quaker Window Products Co. | Thermally enhanced extrudate for windows and doors |
| US11713612B2 (en) | 2020-03-03 | 2023-08-01 | Quaker Window Products Co. | Thermally enhanced extrudate for windows and doors |
| US11946313B2 (en) | 2020-09-04 | 2024-04-02 | Quaker Window Products Co. | Fenestration unit including slidable glass panels |
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