GB2097037A - Wall ties with moisture-trap or drip-promoter - Google Patents
Wall ties with moisture-trap or drip-promoter Download PDFInfo
- Publication number
- GB2097037A GB2097037A GB8210658A GB8210658A GB2097037A GB 2097037 A GB2097037 A GB 2097037A GB 8210658 A GB8210658 A GB 8210658A GB 8210658 A GB8210658 A GB 8210658A GB 2097037 A GB2097037 A GB 2097037A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tie
- coating
- wall tie
- plastics
- round
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 239000004033 plastic Substances 0.000 claims abstract description 23
- 229920003023 plastic Polymers 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 19
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000012768 molten material Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003618 dip coating Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4178—Masonry wall ties
- E04B1/4185—Masonry wall ties for cavity walls with both wall leaves made of masonry
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
A straight mid-portion of the metal tie 10 is coated with mouldable material 12, the coating having lateral projection(s) 15 as moisture-trap or drip-promoter 14, intermediate the ends of the straight mid-portion and depending from the tie. Deformation of the metal to produce the moisture trap or drip promoter is thereby avoided, so that there is no stress raiser in the metal to give rise to buckling of the wall tie under compression loads when in use. The coating may be plastics which may be moulded on to the tie as, or together with, the projection; or the plastics may be deformed after coating by hot tools or local heating, or a strip, having bump(s), may be wrapped round the tie. <IMAGE>
Description
SPECIFICATION
Wall ties
This invention relates to wall ties, and has for its object a method of providing a wall tie of metal with a moisture trap or drip promoter without having to deform the metal, e.g., by kinking or twisting, so that there is no stress raiser in the metal to give rise to buckling of the wall tie under compression loads when in use.
According to the present invention, a method of providing a wall tie of metal with a moisture trap or drip promoter comprises coating at least a straight mid-portion of the wall tie with mouldable material and forming the coating with at least one lateral projection intermediate the ends of the straight mid-portion and adapted to depend from the wall tie when in use.
The mouldable material may be plastics
material and may extend over a mid-portion only of the wall tie, but preferably extends over the whole wall tie, which may then be formed of steel, being protected by the plastics coating from corrosion in known manner.
The plastics material may be thermosetting or thermoplastics and be moulded on to the wall tie with the lateral projection co-moulded on it, but
the use of thermoplastics is advantageous for
applying a uniform coating which is then deformed locally by heating or the application of
hot tools to produce the lateral projection or
projections. Thus, the wall tie may be formed of plastics coated wire rod (of suitable stiffness with respect to buckling), with end formations shaped for locking in mortar layers, the plastics coating being deformed locally around the middle to form one or more lateral projections. However, the invention is equally applicable to wall ties formed of other metal sections with uniform or nonuniform coatings of thermoplastics material.Thus a flat strip metal tie may have a plastics coating, applied by extrusion or by dip or spray coating, which coating may be rough surfaced so as to provide a plurality or multiplicity of lateral projections a number of which are inherently adapted to depend from the wall tie when in use.
Alternatively, the coating may be formed round a mid-portion only by dropping molten material, such as wax, plastics or metal, on to the tie and allowing it to coalesce round the tie with a depending portion, or by moulding molten material round a mid-portion to form a bulge on one or more sides.
Again, the coating may be formed by bonding round a mid-portion a strip of material wrapped round the tie, which strip is provided with one or more bumps.
The invention also embraces a wall tie of metal provided with a moisture trap or drip promoter consisting of a lateral projection or projections by any of the aforesaid methods.
A number of wall ties in accordance with the invention, and methods of making them, will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a plan of a round wire rod wall tie in accordance with the invention;
Figure 2 is an enlarged fragmentary section taken on the line A-A of Figure 1 and showing a method of providing a moisture trap or drip promoter;
Figure 3 is a plan of a flat strip metal wall tie in accordance with the invention;
Figure 4 is an enlarged fragmentary section taken on the line B-B of Figure 3 and showing a method of providing the moisture trap or drip promoter;
Figure 5 is a plan of another round wire wall tie in accordance with the invention;
Figure 6 is a side elevation of the wall tie of
Figure 5;;
Figure 7 is a plan of another flat strip metal wall tie in accordance with the invention; and
Figure 8 is a side elevation of the wall tie of
Figure 7, with an indication of how it is provided with the moisture trap or drip promoter.
The wall tie 10 of Figures 1 and 2 is formed from round steel wire 11 coated with thermoplastics 1 2 and bent at each end into a loop 13. In between, the plastics coated wire is straight, i.e., it is not deformed (e.g., by kinking or twisting) to form a moisture trap or drip promoter, so that there is no stress raiser in the metal to give rise to buckling of the wall tie under compression loads when in use. Instead, the wall tie is provided with a moisture trap or drip promoter 14 consisting of two lateral projections
15 above and below the plane of the loops 13
and formed by deforming the plastics coating 12
locally by the application of hot tools 1 6. Thus the wall tie 10 can be used either way up with equal
effectiveness.
In Figures 3 and 4 a wall tie 20 is formed from flat strip steel 21 with divided ends 22 and coated with thermoplastics 23, and a moisture trap or drip promoter 24 consisting of two lateral projections 25 above and below the plane of the strip is formed by deforming the plastics coating 23 locally between the ends of the straight midportion by passing the wall tie laterally between a pair of heated rollers 26. Again, tho wall tie 20 is equally effective used either way up.
In contrast, the wall tie 30 of Figures 5 and 6 is formed of round steel wire rod 31, which may be stainless or galvanised or may be plastics coated, with a loop 32 at each end, and a moisture trap or drip promoter 33 is formed by dropping molten material, such as wax, plastics or metal, on to the tie and allowing itto coalesce round the tie with a depending portion 34, whereby the wall tie serves best the way up shown in Figure 6.
Likewise, the wall tie 40 of Figures 7 and 8 is formed of flat strip steel 41, which may be stainless or galvanised or may be plastics coated, with divided ends 42, and a moisture trap or drip promoter 43 with lateral projections 44 is formed either by moulding molten material between moulds 45 or by bonding a strip of plastics material wrapped round the tie.
Claims (14)
1. A method of providing a wall tie of metal with a moisture trap or drip promoter comprising coating at least a straight mid-portion of the wall tie with mouldable material and forming the coating with at least one lateral projection intermediate the ends of the straight mid-portion and adapted to depend from the wall tie when in use.
2. A method as in Claim 1, wherein the mouldable material is plastics material.
3. A method as in Claim 2, wherein the plastics material extends over the whole wall tie.
4. A method as in Claim 3, wherein the wall tie is formed of steel.
5. A method as in any one of Claims 2 to 4, wherein the plastics material is thermosetting or thermoplastics and is moulded on to the wall tie with the lateral projection comoulded on it.
6. A method as in Claim 3, wherein the plastics material is thermoplastics applied as a uniform coating which is then deformed locally by heating or the application of hot tools to produce the lateral projection or projections.
7. A method as in Claim 6, wherein the wall tie is formed of plastics coated wire rod with end formations shaped for locking in mortar layers, the plastics coating being deformed locally around the middle to form one or more lateral projections.
8. A method as in Claim 6, wherein the wall tie is formed of flat strip metal with a plastics coating, applied by extrusion or dip or spray coating.
9. A method as in Claim 8, wherein the coating is rough surfaced so as to provide a plurality of multiplicity of lateral projections a number of which are inherently adapted to depend from the wall tie when in use.
10. A method as in Claim 1, wherein the coating is formed round a mid-portion only by dropping molten material on to the tie and allowing it to coalesce round the tie with a depending portion.
11. A method as in Claim 1, wherein molten material is moulded round a mid-portion to form a bulge on one or more sides.
12. A method as in Claim 1, wherein the coating is formed by bonding round a mid-portion a strip of material wrapped round the tie, which strip is provided with one or more bumps.
1 3. A wall tie of metal provided with a moisture trap or drip promotor consisting of a lateral projection or projections by any of the methods in the preceding Claims.
14. A wall tie substantially as hereinbefore described with reference to Figures 1 and 2, or
Figures 3 and 4, or Figures 5 and 6, or Figures 7 and 8 of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8210658A GB2097037B (en) | 1981-04-14 | 1982-04-13 | Wall tiles with moisture-trap or drip-promoter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8111782 | 1981-04-14 | ||
| GB8210658A GB2097037B (en) | 1981-04-14 | 1982-04-13 | Wall tiles with moisture-trap or drip-promoter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2097037A true GB2097037A (en) | 1982-10-27 |
| GB2097037B GB2097037B (en) | 1985-07-17 |
Family
ID=26279141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8210658A Expired GB2097037B (en) | 1981-04-14 | 1982-04-13 | Wall tiles with moisture-trap or drip-promoter |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2097037B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003097953A1 (en) * | 2002-05-17 | 2003-11-27 | Surecav Limited | Spacer device for a cavity wall |
| EP2562318A1 (en) * | 2011-08-23 | 2013-02-27 | NV Bekaert SA | A binding element for a building wall structure |
| US8584420B2 (en) | 2002-05-17 | 2013-11-19 | Surecav Limited | Spacer device for a cavity wall |
-
1982
- 1982-04-13 GB GB8210658A patent/GB2097037B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003097953A1 (en) * | 2002-05-17 | 2003-11-27 | Surecav Limited | Spacer device for a cavity wall |
| US8584420B2 (en) | 2002-05-17 | 2013-11-19 | Surecav Limited | Spacer device for a cavity wall |
| EP2562318A1 (en) * | 2011-08-23 | 2013-02-27 | NV Bekaert SA | A binding element for a building wall structure |
| WO2013026641A1 (en) * | 2011-08-23 | 2013-02-28 | Nv Bekaert Sa | A binding element for a building wall structure |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2097037B (en) | 1985-07-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |