GB2285818A - Providing expanded insulation in lintel - Google Patents

Providing expanded insulation in lintel Download PDF

Info

Publication number
GB2285818A
GB2285818A GB9425521A GB9425521A GB2285818A GB 2285818 A GB2285818 A GB 2285818A GB 9425521 A GB9425521 A GB 9425521A GB 9425521 A GB9425521 A GB 9425521A GB 2285818 A GB2285818 A GB 2285818A
Authority
GB
United Kingdom
Prior art keywords
lintel
channel portion
lid
beads
void
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
GB9425521A
Other versions
GB9425521D0 (en
GB2285818B (en
Inventor
John Coyle
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.)
Keystone Lintels Ltd
Original Assignee
Keystone Lintels 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 GB939325846A external-priority patent/GB9325846D0/en
Application filed by Keystone Lintels Ltd filed Critical Keystone Lintels Ltd
Priority to GB9425521A priority Critical patent/GB2285818B/en
Publication of GB9425521D0 publication Critical patent/GB9425521D0/en
Publication of GB2285818A publication Critical patent/GB2285818A/en
Application granted granted Critical
Publication of GB2285818B publication Critical patent/GB2285818B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C2003/023—Lintels

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Thermal Insulation (AREA)

Abstract

A method of providing insulation material in the void of a channel portion (12) of a profiled metallic lintel (10) comprising the steps of pre-heating the lintel (10), closing off the open ends of the channel portion (12) with wall members (8), closing off the opening (18) to the channel portion with a lid (20), introducing a plurality of polystyrene beads (16) into the channel portion (12) through the lid (20), introducing at one or more locations (22) a heated medium, e.g. steam or hot gas into the closed-off channel portion (12) while allowing exhausting of any air therein via (24) to cause expansion of the beads to fully fill the void, and removing the lid (20) from the opening (18). <IMAGE>

Description

LINTELS This invention relates to an improved lintel formed from a metal sheet into a substantially top hat profile having two planar portions separated by a channel portion, the channel portion being filled with an insulation material whose function is to prevent cold bridging.
Presently, there are two methods of providing insulation material into the channel portion. A first method inserts preformed sheets of expanded polystyrene board into the void of the channel portion. A disadvantage of this method is that the board does not always fill fully the void in the channel portion and therefore cold bridging can still occur in those instances, defeating the function of providing the insulation material. A second method inserts polyurethane foam which expands to completely fill the void however is disadvantageous due to the toxic nature of the chemicals involved and therefore not environmentally-friendly as well as being difficult to handle.
An object of the present invention is to provide a lintel having insulation material in the void of its channel portion, the insulation material being inserted by a method which obviates or mitigates the disadvantages of the methods heretofore.
Accordingly, a first aspect of the present invention is a method of providing insulation material in the void of a channel portion of a profiled metallic lintel, the method comprising the steps of closing off the open ends of the channel portion with wall members, closing off the opening to the channel portion with a lid, introducing a plurality of polystyrene beads into the channel portion, introducing at one or more locations a heated medium into the closed-off channel portion while allowing exhausting of any air therein to cause expansion of the beads to fully fill the void, and removing the lid from the opening.
Preferably, the method includes pre-heating the lintel. The heating desirably is effected using a heated medium, preferably heated water. The method further beneficially includes the step of locating the lintel in a jig providing the wall members, each lintel being positioned in the jig in an inverted position with the opening uppermost. The method desirably includes introducing the polystyrene beads through the lid.
Further, a second aspect of the present invention is a lintel having the void of its channel portion filled with an insulation material formed of expanded polystyrene beads according to the method described in the preceding next two paragraphs.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawing which shows schematically a crosssectional view of a lintel located in a jig and having a lid positioned over the opening thereof with a heated medium inlet and an air outlet being shown extending through the lid.
Referring to the drawing, a profiled metallic lintel 10 has the void of its channel portion 12 filled with an insulation material 14 formed of expanded polystyrene beads 16.
A method of providing insulation material into the void of the channel portion 12 of a lintel 10 comprises the steps of pre-heating the lintel using warm water or other suitable heated medium, closing off the open ends of the channel portion 12 with wall members 8, closing off the opening 18 to the channel portion 12 with a lid 20, introducing a plurality of polystyrene beads 16 into the channel portion 12 through the lid 20, introducing at one or more locations along the length of the lintel 10 a heated medium through a first pipe or pipes 22 into the closed-off channel portion 12 while allowing exhausting of any air therein through a second pipe or pipes 24 to cause expansion of the beads 16 to fully fill the void, and removing the lid 20 from the opening 18. Operating valves 28 are provided, one in each first and second pipe 22, 24.The beads 16 are gravity fed through pipes 22, one pipe 22 provided approximately every 2-4 inches lengthwise of the lid of the lintel 10 with the respective operating valve 28 acting as a shutter to cut off flow of beads. The beads 16 flow into the closed off channel portion 12. The air can be drawn off through pipes 24 which can also be provided at approximately 2-4 inch spaced intervals along the lid of the lintel.
For the method to be performed, the lintel 10 is positioned in a jig 26 providing the wall members, each lintel 10 in turn being positioned in the jig 26 in an inverted position. The heated medium may be gaseous, for example steam or an inert gas, or may be very hot air.
The size of the polystyrene beads are preferably within the range 2 to 4 mm diameter.
The pipes 22 may extend into the channel portion 12 each thereby leaving a recess of complementary shape to provide a key for any settable material to be adhered thereto.
Variations and modifications can be made without departing from the scope of the invention described and as claimed hereinafter.

Claims (16)

1. A method of providing insulation material in the void of a channel portion of a profiled metallic lintel, the method comprising the steps of closing off the open ends of the channel portion with wall members, closing off the opening to the channel portion with a lid, introducing a plurality of polystyrene beads into the channel portion, introducing at one or more locations a heated medium into the closed-off channel portion while allowing exhausting of any air therein to cause expansion of the beads to fully fill the void, and removing the lid from the opening.
2. A method as claimed in Claim 1, wherein the lintel is pre-heated.
3. A method as claimed in Claim 2, wherein the heating is effected using a heated medium
4. A method as claimed in Claim 3, wherein the heated medium is heated water.
5. A method as claimed in any one of Claims 1 to 4, wherein the method further includes the step of locating the lintel in a jig providing the wall members, each lintel being positioned in the jig in an inverted position.
6. A method as claimed in any one of the preceding Claims, wherein the method includes introducing the polystyrene beads through the lid.
7. A method as claimed in Claim 6, wherein the beads are introduced through one or more first pipes provided in the lid.
8. A method as claimed in Claim 6 or 7, wherein the air is exhausted by being drawn off through one or more second pipes provided in the lid.
9. A method as claimed in any one of the preceding Claims, wherein an operating valve is provided, one in each first and second pipe.
10. A method as claimed in Claim 7, 8 or 9, wherein the beads are gravity fed through the first pipe(s), one first pipe being provided approximately every 2-4 inches lengthwise of the lid of the lintel with the respective operating valve acting as a shutter to cut off flow of beads.
11. A method as claimed in Claim 10, wherein the beads introduced flow into the closed off channel portion.
12. A method as claimed in any one of Claims 8 to 11, wherein the air is drawn off through the second pipe(s) which are provided at approximately 2-4 inch spaced intervals along the lid of the lintel.
13. A method as claimed in any one of Claims 7 to 12, wherein the first pipe(s) extend into the channel portion whereby on expansion of the beads complementary recess are provide on removal of the lid, the recesses serving to provide a keying means for any settable material to be adhered thereto.
14. A lintel having the void of its channel portion filled with an insulation material formed of expanded polystyrene beads according to the method described in any one of the preceding Claims.
15. A method substantially as hereinbefore described with reference to the accompanying drawing.
16. A lintel substantially as hereinbefore described with reference to the accompanying draswing.
GB9425521A 1993-12-17 1994-12-19 Lintels Expired - Fee Related GB2285818B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9425521A GB2285818B (en) 1993-12-17 1994-12-19 Lintels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB939325846A GB9325846D0 (en) 1993-12-17 1993-12-17 Lintels
GB9425521A GB2285818B (en) 1993-12-17 1994-12-19 Lintels

Publications (3)

Publication Number Publication Date
GB9425521D0 GB9425521D0 (en) 1995-02-15
GB2285818A true GB2285818A (en) 1995-07-26
GB2285818B GB2285818B (en) 1997-08-20

Family

ID=26304041

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9425521A Expired - Fee Related GB2285818B (en) 1993-12-17 1994-12-19 Lintels

Country Status (1)

Country Link
GB (1) GB2285818B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413837B (en) * 2002-06-11 2006-06-15 Eder Walter Dipl Ing Fh MURDER FOR A MUZZLE OF A WINDOW OR DOOR RECEIVING WALL OPENING
GB2620231A (en) * 2022-04-13 2024-01-03 Keystone Lintels Ltd Method for filling a cavity in a building component and a building component

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992011422A1 (en) * 1990-12-20 1992-07-09 Birtley Building Products Limited Lintel
GB2262756A (en) * 1991-12-23 1993-06-30 Catnic Ltd Lintels
GB2267520A (en) * 1992-06-02 1993-12-08 Catnic Ltd Lintel with insulation and keying means
GB2274293A (en) * 1992-06-02 1994-07-20 Catnic Ltd Lintel with insulation and keying means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992011422A1 (en) * 1990-12-20 1992-07-09 Birtley Building Products Limited Lintel
GB2262756A (en) * 1991-12-23 1993-06-30 Catnic Ltd Lintels
GB2267520A (en) * 1992-06-02 1993-12-08 Catnic Ltd Lintel with insulation and keying means
GB2274293A (en) * 1992-06-02 1994-07-20 Catnic Ltd Lintel with insulation and keying means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413837B (en) * 2002-06-11 2006-06-15 Eder Walter Dipl Ing Fh MURDER FOR A MUZZLE OF A WINDOW OR DOOR RECEIVING WALL OPENING
GB2620231A (en) * 2022-04-13 2024-01-03 Keystone Lintels Ltd Method for filling a cavity in a building component and a building component

Also Published As

Publication number Publication date
GB9425521D0 (en) 1995-02-15
GB2285818B (en) 1997-08-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20021219