GB2147649A - Glazing strip - Google Patents

Abstract

A glazing strip 20 comprises two parallel, longitudinally conterminous, and co-extensive channels 22 and 24. The channel 22 is substantially wider than the channel 24 and serves as a drainage channel for condensation running down a glazing pane (not shown) held in the channel 24. The drainage channel 22 has a plurality of spaced drainage apertures 28 which communicate with a hollow, longitudinally co-extensive chamber 30 located beneath the channels 22 and 24. The chamber 30 has a downwardly extending front face or limb 32 which 22 conforms to external putty or beading chamfering. The face or limb 32 has a plurality of spaced apertures 34, which 24 am preferably milled slots or holes communicating with the chamber 30. The chamber 30 has a downwardly sloping floor 35 to facilitate drainage of the condensation to the exterior. <IMAGE>

Description

SPECIFICATION Glazing Strip This invention relates to a glazing system and in particular to a glazing strip whereby a panel of glass, plywood, metal or other material in sheet form (hereinafter referred to as a "pane") is held within a mounting or glazing frame.

Nowadays, improved internal heating methods, for example central heating, in houses had led to increased problems with window condensation.

Condensation runs down the interior surface of the window panes, and as there is usually no means of drainage for the condensation, the water remains standng with possible consequential damage to the window frames by rotting or to adjacent curtains, wallpaper and plaster.

The invention sets out to provide an improved glazing strip, more particularly an extrudable glazing strip, say of synthetic plastics material for supporting said panes, a method of affixing the glazing strip to a mounting or glazing frame, and an assembly so produced. The invention also sets out to reduce at least substantially the aforementioned disadvantage of known glazing systems.

According to a first aspect of the invention, there is provided a glazing strip which comprises two parallel, longitudinally conterminous, and co-extensive, channels, one of said channels being substantially wider than the other of said channels, the one said channel serving as a drainage channel for condensation running down a pane held in the other said channel, the drainage channel communicating with the exterior of the glazing strip to allow the condensation collected therein to drain away, the glazing strip being affixable to a mounting or glazing frame so that the one said channel at least partly overlies an edge portion of the mounting or glazing frame.

One side of the channel, conveniently the side forming the division between the two said channels for the glazing pane is preferably resilient and inclined over the channel whereby a glazing pane may be gripped by and held in the channel. The inclination of the channel side may also enable panes of different thicknesses to be held, the channel having a maximum width at its base and a minimum at the free edge of the channel side.

The glazing strip may be affixed to the mounting or glazing frame via the fixing means, say screws or the like, interconnecting the one said channel to the mounting or glazing frame.

The one said channel may have a plurality of spaced drainage apertures or the like, each of the plurality of drainage apertures or the like communicating with a hollow chamber which is longitudinally co-extensive with and located beneath the said channels. The hollow chamber may have a plurality of spaced drainage apertures or the like arranged in a face or limb of the hollow chamber extending downwardly from the other said channel to or towards the mounting or glazing frame, the limb conforming to putty or beading chamfering.

The chamber may have a downwardly sloping floor to facilitate drainage.

The glazing strip may have a downwardly extending flange or the like which is adapted for engagement with a retaining member, say a strip or the like, secured to the mounting or glazing frame.

The glazing strip is preferably arranged to abut in a rebate of the mounting or glazing frame.

The glazing strip may be formed from a synthetic plastics extrusion, in which the said channels are of flexible synthetic plastics material. The hollow chamber and the face or limb thereof may be of rigid synthetic plastics material.

According to a second aspect of the invention, there is provided a method of affixing the glazing strip as hereinbefore defined to a mounting or glazing frame which includes placing the glazing strip in a rebate of the mounting or glazing strip so that the one said channel at least partly overlies an edge portion of the mounting or glazing frame and affixing said glazing strip to the mounting or glazing frame by means of fasteners or the like engaging between the one said channel and the edge portion of the mounting or glazing frame.

According to a third aspect of the invention, there is provided an assembly of a mounting or glazing frame in combination with a glazing strip or strips as hereinbefore defined affixed thereto.

The invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 is an isometric view of part of a glazing strip according to the invention, affixed to a mounting or glazing frame.

Figure 2 is a section taken through the glazing strip.

Figure 3 is a section through a deflector of the glazing strip; Figure 4 is a plan view from above of the glazing strip; Figure 5 is a plan view of part of a further embodiment of the glazing strip; and Figure 6 is a section through a further embodiment of the glazing strip.

Referring to the drawings, Figure 1 shows part of a mounting or glazing frame 10, for example, a window frame. The frame 10 has a sill 12 and a ledge 14. In a conventional manner, the frame is rebated at 16.

The glazing strip 20 according to the invention comprises two parallel, longitudinally conterminous, and co-extensive channels 22 and 24 (as shown in Figures 2 and 4). The channel 22 is substantially wider than the channel 24 and serves as a drainage channel for condensation running down a pane 26 (as hereinbefore defined) held in the channel 24. The drainage channel 22 has a plurality of spaced drainage apertures 28 which communicate with a hollow, longitudinally co-extensive chamber 30 located beneath the channels 22 and 24. The chamber 30 has a downwardly extending front face or limb 32 which conforms to external putty or beading chamfering. The face or limb 32 has a plurality of spaced apertures 34, which are preferably milled slots or holes communicating with the chamber 30.The chamber 30 has a down wardly sloping floor 35 to facilitate drainage of the condensation to the exterior. The drainage apertures 28 in the channel 22 are located within a recess 36 in the bottom of the channel 22, and can be formed either by punching (as shown in Figure 4) or by milling to form slots 28a (as shown in Figure 5).

As shown in Figure 1, the glazing strip 20 abuts the rebate 16 of the mounting or glazing frame 10.

The channel 22 overlies, in use, at least partly an edge portion 18 of the sill 12. The glazing strip is retained in the rebate 16 by the interengagement of a downwardly extending flange 38 from the base 40 of the channel 22 with a retaining strip 42 secured to the rebate and spaced from the sill 12.

The strip 42 is co-extensive with the glazing strip.

The flange 38 drops into the space between the sill 12 and the strip 42. The glazing strip can be additionally affixed to the sill by means of fasteners, say screws, passing through the base 40 of the channel 22 into the sill.

The glazing strip is preferably formed from a synthetic plastics extrusion, in which the channels 22 and 24 are of a flexible synthetic plastics material. This is particularly necessary for the channel 24 which holds the pane in place. The common boundary flange between the two channels 22 and 24, namely the upstanding flange 44, is chamfered at its upper free end portion 46 to assist condensation running down the pane into the drainage channel 22. The hollow chamber 30 and the front face or limb 32 is preferably formed of a rigid synthetic plastics material.

Figure 3 shows a deflector 59 for use with the glazing strip.

A most useful feature arises from modification to what is shown in Figure 2 in order to accommodate different thicknesses of glass. As shown in Figure 6, such may be done by inclining the flange 44 and ensuring same is resiliently flexible for deflection purposes, such inclination of the flange 44 providing a maximum width of the channel 24 at its root and a minimum width at its free edge.

The bottom edge of the flange 38 can, of course, be shaved in order to match to non-standard or otherwise variant rebate depths and still get seat ing of the rearward extension to the wider slot 22 without loss of slope on the floor panel 35.

Also, it is possible, say for particularly heavy grades of plate glass, to reinforce the cavity 30 against significant deformation under load, say by a vertical wall from either, but usually, the front wall of the slot 24, and a corresponding rib on the bottom of the floor panel 35. Other alternatives in cluded bottom-face-grooved fillet strips installed in the cavity 30.

Claims (13)

1. A glazing strip which comprises two parallel, longitudinally conterminous, and co-extensive, channels, one of said channels being substantially wider than the other of said channels, the one said channel serving as a drainage channel for conden sation running down a pane held in the other said channel, the drainage channel communicating with the exterior of the glazing strip to allow the condensation collected therein to drain away, the glazing strip being affixable to a mounting or glazing frame so that the one said channel at least partly overlies an edge portion of the mounting or glazing frame.

2. A glazing strip as claimed in claim 1, wherein one side of the channel for the glazing pane is resilient and inclined over the channel, whereby a glazing pane may be gripped by and held in the channel.

3. A glazing strip as claimed in claim 2 wherein said one side is the division between the two channels.

4. A glazing strip as claimed in claim 1, 2 or 3, wherein the one said channel has a plurality of spaced drainage apertures or the like, each of the plurality of drainage apertures or the like communicating with a hollow chamber which is longitudinally co-extensive with and located beneath the said channels.

5. A glazing strip as claimed in claim 4, wherein the hollow chambers has a plurality of spaced drainage apertures or the like arranged in a face or limb of the hollow chamber extending downwardly from the other said channel to or towards the mounting or glazing frame, the limb conforming to putty or beading chamfering.

6. A glazing strip as claimed in claim 4 or 5, wherein the chamber has a downwardly sloping floor to facilitate drainage.

7. A glazing strip as claimed in any one of claims 1 to 6 having a downwardly extending flange or the like which is adapted for engagement with a retaining member secured to the mounting or glazing frame.

8. A glazing strip as claimed in claim 7 arranged to abut in a rebate of the mounting or glazing frame.

9. A glazing strip as claimed in any one of claims 1 to 8 formed from a synthetic plastics extrusion, in which the said channels are of flexible synthetic plastics material.

10. A glazing strip as claimed in claim 9, wherein the hollow chamber and the face or limb thereof are of rigid synthetic plastics material.

11. A method of affixing a glazing strip as claimed in any one of claims 1 to 10 to a mounting or glazing frame which includes placing the glazing strip in a rebate of the mounting or glazing strip so that the one said channel at least partly overlies an edge portion of the mounting or glazing frame and affixing said glazing strip to the mounting or glaz ing frame by means of fasteners or the like engag ing between the one said channel and the edge portion of the mounting or glazing frame.

12. An assembly of a mounting or glazing frame in combination with a glazing strip or strips as claimed in any one of claims 1 to 10 affixed thereto.

13. A glazing strip substantially as hereinbefore described with reference to and as illustrated in any of Figures 1 to 4, Figure 5 or Figure 6 of the accompanying drawings.