GB2102483A - Window glazing - Google Patents

Abstract

A glazed,window assembly includes a window frame, (10), a glazing compound (32) serving to retain a pane of glass (30) adjacent to a flange (14) of the frame and a channel member bead (38) of unequal section having ridges (44, 46) on the inwardly directed face of the shorter limb (36) and a plurality of projections (40, 42, 62) provided on the window frame. The projections are engaged by the ridges of the channel member in order to retain the glazing compound and the pane of glass in the window frame. <IMAGE>

Description

SPECIFICATION Window glazing This invention relates to window glazing, more particularly to glazing in which putty is at least substantially not visible from the outside of the window.

It is completely conventional both with metal frame and wooden frame windows to secure glass with putty sometimes reinforced by embedded metal restraining devices or clips. Such conventional methods have disadvantages and glazing with the aid of retaining beads has become common practice, since such beads ensure a good appearance.

However, such use of beading has tended substantially to increase the cost of the glazing operation as a result of the complexity involved in the fixing arrangements for the beading so that some of the advantages, including cost savings, are lost.

According to the present invention there is provided a glazed window assembly comprising a window frame, a glazing compound serving at least partially to retain a pane of glass adjacent a flange of the frame, and a channel member bead of unequal section having engagement means on the inwardlydirected face of the shorter limb, and a plurality of projections provided on the window frame, said projections being engaged by the engagement means of the channel to retain the glazing compound and the pane of glass.

The invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure l is a fragmentary cross-section through a glazed window assembly in accordance with the invention; and Figure 2 is an end view, to an enlarged scale, of a channel member bead incorporated in the assembly of Figure 1.

The window frame 10 is of generally conventional section and includes a web 12, an upturned flange 14 (as shown) and a downturned flange 16. The upturned flange is continued for a short distance downwardly by a ridge 18 of aproximately triangular section.

As is conventional, a weather strip 20 (broken lines) is secured to the underside (as shown) of the web 12 by means of studs 22 (broken lines) spaced along the length of the web. The weather strip 20 has two flexible flanges 24, 26 to ensure that there will be minimal passage of air/water between opening inner frame and fixed outer frame. When installed the flange 24 will, of course, be deflected so that a seal is formed between it and the web of the fixed outer frame of the window.

A glass pane 30 is embedded in glazing compound 32 of the composition suited to the material of the frame; the glazing compound is bounded by one face of the upstanding flange 14, the web of the inner frame and the shorter limb 36 of a channel member bead 38; the outer, as shown, limb 34 of the bead extends towards and parallel to the downwardlyextending flange 16 of the window frame 10.

During manufacture of the window frame, spaced holes are pierced or drilled in the web 12 of the window frame 10, but it is not necessary to tap these holes since securing of the bead is effected by means of a self-tapping screw 40 having a SUPAD Rl\/ (Registered trade mark) or a POZIDRIVE (Registered trade mark) recess. A spacer 42 is placed beneath the head of each screw in order to ensure that the screw is driven to the correct depth.

As is apparent from the drawing-and In particular Figure 2, the channel member has two unequal limbs,34,36 the shorter limb 36 having two inwardly-extending projections 44, 46 shaped so that they engage around a portion of the head of each of the screws 40 corresponding to the overlap beyond this spacer.

The relative lengths of the limbs 34,36 will depend upon design criteria for particular window frames.

The two projections 44, 46 have different sections, the upper one, 44, having an upwardly facing edge 48 extending only a short distance from the adjacent surface of the inner face ofthe limb, a vertically.

extending edge 50 and an edge 52 extending at an angle of 60 to the adjacent inwardly-directed face of the limb 36. The junctions of the edges of this projection are all sharp.

As is apparent, the thickness of the limb between the projections is less than the thickness of the remainder of the limb.

The lower projection 46 has an upper edge 54 of greater extent than edge 48, a vertical edge 56 and an inclined edge 58 (45 to the limb surface) which extends to a radiussed lower tip 60 of the limb.

The channel member bead may be made of aluminium for example of specification HE9TF.

The self-tapping screw 40 is generally conventiona and is made of hardened steel, but has a head 62 slightly smaller than standard to enable accommodation within the space defined by the web 12. The head 62 is of "d" type. The spacer 42 is of aluminum or steel and has dimensions such that the longer limb 34 of the bead rests on the upper surface of the web 12.

It should be readily apparent from the description of the parts how the assembly operation takes place, but it will nevertheless be briefly described. The window frame 10 is povided with a series of holes corresponding to the number of the self-tapping screws 40, and the studs 22 for securing the weather strip 20 are inserted and the strip applied to the heads of the studs. The glazing compound 32 is then applied together with the glass 30, the self-tapping screws 40 applied by glazier and the pre-cut lengths of glazing strip are snapped over the heads 62 of the row of screws already applied. At the corners butt joints will be provided in the beading.

The method hereinbefore described together with the window frame itself eliminates the requirement for tapping of holes to receive the studs hitherto employed for securing beading and the specially adapted beading strip of unequal channel section avoids the need to provide notches in the bead so as to prevent interference between the beading and the studs securing the weather strip.

Although described in relation to single glazing, the invention is, of course, also applicable to factory assembled, double-glazed, frames.

CLAIMS (Filed 8.6.82) 1. A glazed window assembly comprising a window frame, a glazing compound serving at least partially to retain a pane of glass adjacent a flange of the frame, and a channel bead member of unequal section having engagement means on the inwardlydirected face of the shorter limb of the unequal section, and a plurality of projections provided on the window frame, said projections being engaged by the engagement means of the channel bead member whereby fully to retain the bead member, the glazing compound and the pane of glass in the frame.

2. A glazed window assembly comprising a metal window frame, a pane of glass, glazing compounds serving as primary retaining means for the pane of glass in the window frame adjacent one flange thereof, a channel section bead having unequal length limbs incorporating engagement means on the face of the shorter limb directed towards the longer limb, and a plurality of projections on a part of the window frame, said projections being engaged by the engagement means of the shorter limb of the channel bead, the engagement means of the shorter limb inter-acting between the glazing compound and the projections thereby to maintain said glass pane, the glazing compound and the bead in the frame.

3. A glazed window assembly according to Claim 1 or Claim 2 wherein the window frame comprises a web and flanges extending from the web in opposed directions, said web serving to mount the projections and also to mount studs serving to retain weather strip on the face of the web opposite to the glass pane.

4. An assembly according to any one of the preceeding Claims wherein the engagement means comprises two inwardly-directed ridges of the shorter limb one of which lies substantially at the free edge of the limb and the other of which is spaced from that ridge towards the base of the channel.

5. An assembly according to any one of the preceeding Claims wherein the glass pane is a sealed, spaced, double sheet of glass.

6. An assembly according to any one of the preceeding Claims wherein the projections comprise screws and spacers to ensure that the screws are correctly located on the frame.

7. A glazing bead comprising a channel section member having unequal limbs, the shorter limb having two longitudinally-extending ridges and the thickness of the shorter limb between the two ridges being less than the thickness of the limb lying between the inner one of the ridges and the base of the channel member.

8. A glazing bead according to Claim 7 wherein one ridge is substantially coincident with the free edge of the shorter limb and includes a plane surface directed towards the base of the channel member and a chamfered surface extending substantially from said plain surface to the free edge of the limb.

9. A glazing bead according to Claim 7 or Claim 8 wherein the ridge closer to the base of the channel member has a plane surface directed towards the base an inclined surface directed towards the base and an inclined surface directed towards the opening of the channel.

10. A glazing bead substantially as hereinbefore described with reference to the accompanying drawing.

11. A glazed window assembly substantially as hereinbefore described with reference to the accompanying drawing.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (11)

**WARNING** start of CLMS field may overlap end of DESC **. assembled, double-glazed, frames. CLAIMS (Filed 8.6.82)

1. A glazed window assembly comprising a window frame, a glazing compound serving at least partially to retain a pane of glass adjacent a flange of the frame, and a channel bead member of unequal section having engagement means on the inwardlydirected face of the shorter limb of the unequal section, and a plurality of projections provided on the window frame, said projections being engaged by the engagement means of the channel bead member whereby fully to retain the bead member, the glazing compound and the pane of glass in the frame.

2. A glazed window assembly comprising a metal window frame, a pane of glass, glazing compounds serving as primary retaining means for the pane of glass in the window frame adjacent one flange thereof, a channel section bead having unequal length limbs incorporating engagement means on the face of the shorter limb directed towards the longer limb, and a plurality of projections on a part of the window frame, said projections being engaged by the engagement means of the shorter limb of the channel bead, the engagement means of the shorter limb inter-acting between the glazing compound and the projections thereby to maintain said glass pane, the glazing compound and the bead in the frame.

3. A glazed window assembly according to Claim 1 or Claim 2 wherein the window frame comprises a web and flanges extending from the web in opposed directions, said web serving to mount the projections and also to mount studs serving to retain weather strip on the face of the web opposite to the glass pane.

4. An assembly according to any one of the preceeding Claims wherein the engagement means comprises two inwardly-directed ridges of the shorter limb one of which lies substantially at the free edge of the limb and the other of which is spaced from that ridge towards the base of the channel.

5. An assembly according to any one of the preceeding Claims wherein the glass pane is a sealed, spaced, double sheet of glass.

6. An assembly according to any one of the preceeding Claims wherein the projections comprise screws and spacers to ensure that the screws are correctly located on the frame.

7. A glazing bead comprising a channel section member having unequal limbs, the shorter limb having two longitudinally-extending ridges and the thickness of the shorter limb between the two ridges being less than the thickness of the limb lying between the inner one of the ridges and the base of the channel member.

8. A glazing bead according to Claim 7 wherein one ridge is substantially coincident with the free edge of the shorter limb and includes a plane surface directed towards the base of the channel member and a chamfered surface extending substantially from said plain surface to the free edge of the limb.

9. A glazing bead according to Claim 7 or Claim 8 wherein the ridge closer to the base of the channel member has a plane surface directed towards the base an inclined surface directed towards the base and an inclined surface directed towards the opening of the channel.

10. A glazing bead substantially as hereinbefore described with reference to the accompanying drawing.

11. A glazed window assembly substantially as hereinbefore described with reference to the accompanying drawing.