GB2138058A - Manufacture of thermally insulated frame members - Google Patents

Manufacture of thermally insulated frame members Download PDF

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Publication number
GB2138058A
GB2138058A GB08409217A GB8409217A GB2138058A GB 2138058 A GB2138058 A GB 2138058A GB 08409217 A GB08409217 A GB 08409217A GB 8409217 A GB8409217 A GB 8409217A GB 2138058 A GB2138058 A GB 2138058A
Authority
GB
United Kingdom
Prior art keywords
component
channels
limbs
limb
plastics material
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
Application number
GB08409217A
Other versions
GB2138058B (en
GB8409217D0 (en
Inventor
James Nicholas Stevens
Terence James Hirons
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Alcan Aluminium Ltd
Original Assignee
British Alcan Aluminium Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB838309984A external-priority patent/GB8309984D0/en
Application filed by British Alcan Aluminium Ltd filed Critical British Alcan Aluminium Ltd
Priority to GB08409217A priority Critical patent/GB2138058B/en
Publication of GB8409217D0 publication Critical patent/GB8409217D0/en
Publication of GB2138058A publication Critical patent/GB2138058A/en
Application granted granted Critical
Publication of GB2138058B publication Critical patent/GB2138058B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/263—Frames with special provision for insulation
    • E06B3/267—Frames with special provision for insulation with insulating elements formed in situ
    • 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
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/263—Frames with special provision for insulation
    • E06B3/26336—Frames with special provision for insulation with two metal frame members having interpenetrating or overlapping parts when mounted

Abstract

Curable thermally insulating plastics material 17 in a fluid condition is poured into each of two channels in one elongate metal component 10. Limbs 23 of the other metal component 19 are then lowered into the material in the channels while the material is still fluid, the two components being located by engagement of limbs 22 on component 19 in rebates at the outer sides of the channels in component 10. After the plastics material has cured, limbs 22 are sawn off, leaving components 10 and 19 connected only through the bodies of plastics material. The plastics material forms mechanical interlocks with the sides of channel 14 and with limb 23. <IMAGE>

Description

SPECIFICATION Manufacture of thermally insulated frame members This invention relates to the manufacture of thermally insulated frame members for example for windows and doors.
According to the invention there is provided a method of making a frame member comprising placing a quantity of a curable plastics material in a fluid condition in a channel or channels extending length-wise of a first elongate component of the frame member which channel or channels are so shaped that a mechanical interlock is formed between the plastics material when cured and the first component, then while the material is still in a fluid condition assembling with the first limb or limbs adapted to locate the second component relative to the first component and a second limb or limbs arranged to project into the fluid material in the channel or respective channels, said second limb or limbs being shaped to be out of direct contact with the first component but to form a mechanical interlock with the plastics material when said material has cured, and after the material has cured cutting away at least part of the first limb or limbs to remove the direct connection between the first and second components.
In a preferred method according to the invention, two of said channels are provided on the first component and face in the same direction, the second component having two first limbs engaging the first component at the sides of the channels remote from each other.
According to a preferred feature of the invention, the channels are defined by upstanding flanges on the first component, and the first limbs of the second component engage in rebates along side edges of said flanges.
One embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figures 1 to 4 are cross-sectional views illustrating the successive steps in a method according to the invention.
Fig. 1 shows a first component 10, which is extruded from aluminium for example, having a main body 11 with two pairs of L-shaped flanges 12, 13 on its rear face to form two channels 14 extending lengthwise of the component and overhung at the top at both sides.
Flanges 12 have an upstanding rib 15 spaced from the angle of the L to form a rebate 16 at the side of each channel remote from the other channel. In the first step in the method, a quantity of a curable thermally insulating plastics material 17 in a fluid condition is passed into both of the channels, but the channels are not filled completely, for reasons which will appear presently.
While the plastics material is still in a fluid condition the second component 19 is assembled with the first component as shown in Fig. 2. The second component 19 may also conveniently be an extruded aluminium section and has a main body 20 with two flanges 21 the end portion of each of which is bifurcated to provide two limbs 22, 23. Limb 22 is effectively a straight continuation of flange 21, but limb 23 projects sideways and then parallel to limb 22 and has a transverse foot 24 at its free end. During assembly of the components, the tips of the two limbs 22 lodge in the rebates 16 in the respective flanges 12, and the end portions of the limbs 23 project into the plastics material in the channels 14. This raises the level of the fluid in the channels, but since the channels were not initially filled, the material does not overflow from the channels.
When the plastics material has set, so that the limbs 23 now locate the two components relative to each other and the limbs 22 are no longer necessary, the limbs 22 are sawn through as indicated in Fig. 3, leaving the final product in the form illustrated in Fig. 4.
There is now no direct metallic interconnection between the components 10, 11 but the feet at the free ends of the limbs 23 form a mechanical interlock with the hardened plastics material, and the material is positively retained in the channels by the mechanical interlock formed by the overhanging sides of the channels.
If desired, a preformed plastic plug may be introduced into the channels formed by the sawing operation so as to conceal the machining marks. Alternatively a further quantity of the curable synthetic insulating plastics material may be introduced into these channels for the same purpose.
1. A method of making a frame member comprising placing a quantity of a curable plastics material in a fluid condition in a channel or channels extending lengthwise of a first elongate component of the frame member which channel or channels are so shaped that a mechanical interlock is formed between the plastics material when cured and the first component, then while the material is still in a fluid condition assembling with the first component a second elongate component having a first limb or limbs adapted to locate the second component relative to the first component and a second limb or limbs arranged to project into the fluid material in the channel or respective channels, said second limb or limbs being shaped to be out of direct contact with the first component but to form a mechanical interlock with the plastics material when said material has cured, and after the material has cured cutting away at least part of the first limb or limbs to remove the direct connection between the first and second com
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Manufacture of thermally insulated frame members This invention relates to the manufacture of thermally insulated frame members for example for windows and doors. According to the invention there is provided a method of making a frame member comprising placing a quantity of a curable plastics material in a fluid condition in a channel or channels extending length-wise of a first elongate component of the frame member which channel or channels are so shaped that a mechanical interlock is formed between the plastics material when cured and the first component, then while the material is still in a fluid condition assembling with the first limb or limbs adapted to locate the second component relative to the first component and a second limb or limbs arranged to project into the fluid material in the channel or respective channels, said second limb or limbs being shaped to be out of direct contact with the first component but to form a mechanical interlock with the plastics material when said material has cured, and after the material has cured cutting away at least part of the first limb or limbs to remove the direct connection between the first and second components. In a preferred method according to the invention, two of said channels are provided on the first component and face in the same direction, the second component having two first limbs engaging the first component at the sides of the channels remote from each other. According to a preferred feature of the invention, the channels are defined by upstanding flanges on the first component, and the first limbs of the second component engage in rebates along side edges of said flanges. One embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figures 1 to 4 are cross-sectional views illustrating the successive steps in a method according to the invention. Fig. 1 shows a first component 10, which is extruded from aluminium for example, having a main body 11 with two pairs of L-shaped flanges 12, 13 on its rear face to form two channels 14 extending lengthwise of the component and overhung at the top at both sides. Flanges 12 have an upstanding rib 15 spaced from the angle of the L to form a rebate 16 at the side of each channel remote from the other channel. In the first step in the method, a quantity of a curable thermally insulating plastics material 17 in a fluid condition is passed into both of the channels, but the channels are not filled completely, for reasons which will appear presently. While the plastics material is still in a fluid condition the second component 19 is assembled with the first component as shown in Fig. 2. The second component 19 may also conveniently be an extruded aluminium section and has a main body 20 with two flanges 21 the end portion of each of which is bifurcated to provide two limbs 22, 23. Limb 22 is effectively a straight continuation of flange 21, but limb 23 projects sideways and then parallel to limb 22 and has a transverse foot 24 at its free end. During assembly of the components, the tips of the two limbs 22 lodge in the rebates 16 in the respective flanges 12, and the end portions of the limbs 23 project into the plastics material in the channels 14. This raises the level of the fluid in the channels, but since the channels were not initially filled, the material does not overflow from the channels. When the plastics material has set, so that the limbs 23 now locate the two components relative to each other and the limbs 22 are no longer necessary, the limbs 22 are sawn through as indicated in Fig. 3, leaving the final product in the form illustrated in Fig. 4. There is now no direct metallic interconnection between the components 10, 11 but the feet at the free ends of the limbs 23 form a mechanical interlock with the hardened plastics material, and the material is positively retained in the channels by the mechanical interlock formed by the overhanging sides of the channels. If desired, a preformed plastic plug may be introduced into the channels formed by the sawing operation so as to conceal the machining marks. Alternatively a further quantity of the curable synthetic insulating plastics material may be introduced into these channels for the same purpose. CLAIMS
1. A method of making a frame member comprising placing a quantity of a curable plastics material in a fluid condition in a channel or channels extending lengthwise of a first elongate component of the frame member which channel or channels are so shaped that a mechanical interlock is formed between the plastics material when cured and the first component, then while the material is still in a fluid condition assembling with the first component a second elongate component having a first limb or limbs adapted to locate the second component relative to the first component and a second limb or limbs arranged to project into the fluid material in the channel or respective channels, said second limb or limbs being shaped to be out of direct contact with the first component but to form a mechanical interlock with the plastics material when said material has cured, and after the material has cured cutting away at least part of the first limb or limbs to remove the direct connection between the first and second com ponents.
2. A method as claimed in claim 1, wherein two of said channels are provided on the first component and face in the same direction, the second component having two limbs engaging the first component at the sides of the channels remote from each other.
3. A method as claimed in claim 2, wherein the channels are defined by upstanding flanges on the first component, and the first limbs of the second component engage in rebates along side edges of said flanges.
4. A method of making a frame which method is substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
5. A frame member when made by a method as claimed in any one of claims 1 to 4.
GB08409217A 1983-04-13 1984-04-10 Manufacture of thermally insulated frame members Expired GB2138058B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08409217A GB2138058B (en) 1983-04-13 1984-04-10 Manufacture of thermally insulated frame members

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838309984A GB8309984D0 (en) 1983-04-13 1983-04-13 Thermally insulating frame members
GB08409217A GB2138058B (en) 1983-04-13 1984-04-10 Manufacture of thermally insulated frame members

Publications (3)

Publication Number Publication Date
GB8409217D0 GB8409217D0 (en) 1984-05-23
GB2138058A true GB2138058A (en) 1984-10-17
GB2138058B GB2138058B (en) 1986-03-05

Family

ID=26285808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08409217A Expired GB2138058B (en) 1983-04-13 1984-04-10 Manufacture of thermally insulated frame members

Country Status (1)

Country Link
GB (1) GB2138058B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307262A (en) * 1995-11-17 1997-05-21 John Edward Rose Two-part window frame component
US5901509A (en) * 1995-11-17 1999-05-11 Rose; John Edward Component for a window frame

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2084230A (en) * 1980-09-19 1982-04-07 Norcros Investments Ltd Thermal break sections

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2084230A (en) * 1980-09-19 1982-04-07 Norcros Investments Ltd Thermal break sections

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307262A (en) * 1995-11-17 1997-05-21 John Edward Rose Two-part window frame component
US5901509A (en) * 1995-11-17 1999-05-11 Rose; John Edward Component for a window frame
GB2307262B (en) * 1995-11-17 1999-11-03 John Edward Rose Component for a window frame

Also Published As

Publication number Publication date
GB2138058B (en) 1986-03-05
GB8409217D0 (en) 1984-05-23

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PCNP Patent ceased through non-payment of renewal fee