GB2099895A

GB2099895A - Pivoting window assembly

Info

Publication number: GB2099895A
Application number: GB8117165A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1981-06-04
Filing date: 1981-06-04
Publication date: 1982-12-15

Abstract

A window comprises a main frame 10, a glazed wing frame 11 which is pivotal inwardly about a vertical axis and a bottom flap 14 hingedly mounted in the frame 10 between a secured upright position and an inwardly-pivoted position. The upper face of the flap 14 and the lower face of the frame 11 are engageable when the flap is in the upright secured position, to provide not only a weather-tight seal but also to prevent inwardly pivotal movement of the frame 11. The frame 11 may be pivoted at one side (Figs. 1-3) or centrally (Figs. 4 to 6). The flap 14 is held in its upright position by ball catches and if desired, by a snib i.e. a sliding bolt fastener (not shown). Rebates 20 and 21 are formed in the flap 14 and gaskets 24, 25 are provided so that when the flap 14 is upright and secured a weather seal is formed. <IMAGE>

Description

SPECIFICATION Window frames This invention relates to window frames, particularly for windows that can open inwards about a vertical axis, hereinafter referred to as "window frames of the type aforesaid." A major problem with window frames is providing an effectual weather seal, especially for frames of the type aforesaid made of wood. The problem is not as acute with frames made of metal, but these are more expensive and more prone to condensation problems.

An object of the present invention is to obviate or mitigate the aforesaid problem.

According to the present invention, there is provided a window frame of the type aforesaid including a surrounding framework and a frame in which the window glass can be located, said frame being pivotal inwardly, relative to said framework, about a vertical axis and a bottom flap, hingedly mounted in the framework between a secured position upright and an inwardly-pivoted position, the upper face of the flap and the lower face of the frame being engagable when the flap is in the upright secured position, to provide a weather-tight seal and to prevent inwardly pivotal movement of the window.

Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is an inside elevation of one embodiment of a window frame according to the invention; Fig. 2 is a sectional side elevation to a larger scale; Fig. 3 is a sectional plan on the line Ill-Ill of Fig. 2; and Figs. 4 to 6 are views corresponding to Figs. 1 to 3, illustrating a second embodiment of the window frame according to the invention.

Referring firstly to Figs. 1 to 3, the window frame comprises a surrounding framework 10 within which is a frame 11 carrying a pane of glass 12. The frame 1 1 is hinged at 13 to one side of the framework 10 to be pivotal inwards relative thereto.

Below the frame 1 1 is a flap 14 which is hinged at 1 5 to the bottom end of the framework to be pivotal inwardly thereof between an upright position and a 'swing-back' position. In the upright position, the flap engages the sides of the framework with a ball-catch 1 6 or the like and can be snibbed to the framework to secure it against opening.

As best shown in Fig. 2, the flap has contoured upper and lower faces which form rebates 20, 21.

The upper rebate 20 is outwardly-facing and engages a complementary rebate 22 in the lower face of the frame 1 Thus, while the flap is upright and secured to the framework, the frame 11 cannot pivot inwards due to the raised portion 23 of the rebate 20.

A gasket 24 is located between the rebates 20, 22 and a gasket 25 is located below the lower face of the flap 14 and the external sill 26 of the framework 10.

Thus, while the flap is in the raised secured position, a weather seal is provided at both top and bottom of the flap 14 and the window 1 1/1 2 is secured against opening. Only when the flap is released and pivoted down inwards can be window 1 1/12 be opened inwards.

In a second embodiment, like parts are given like numbers primed.

The frame 11' carrying the window pane 12' is pivotal centrally about vertical pivot hinges 13', so that only a part of the frame 11' will extend inwards when the frame is pivoted about its hinges.

A beam 30 is located across the bottom of the framework and engages the frame 11' when the latter is closed. One half of the beam 30 is in the form of a flap 14' which when pivoted down inwardly, allows inward movement of the frame 11.

The lower face of the flap 1 4' has a rebate 21' and a gasket 25' between the rebate 21' and the external sill 26'. The upper face 31 of the flap 14' is inclined downwardly and outwardly, and the lower face 32 of the frame 1 1 ' has a complementary incline. A gasket 24' is provided therebetween so that when the flap is in the raised, secured position and the window is closed a weather seal is provided at both top and bottom of the flap 14' and the window 11'/12' is prevented from opening.

The flap 14, 14' may be a narrow strip or a panel of substantial height relative to the strip shown in the drawings.

The frame 1 1, 11' may carry double-glazing.

The provision of gaskets between the frame 11, 11' and the framework 10, 10' removes the need for a close fit between the frame and framework, so there can be a space to allow several coats of paint to be applied; also, a certain amount of warp can take place without destroying the weather seal qualities of the window frame.

The window frame may be used in existing casements, i.e. as replacement window frames and also in new buildings.

The framework is preferably made of wood but may be of any other suitable material.

The centrally pivotal window is a much safer construction than horizontally pivotal windows which, until now, have been preferred because of the more efficient weather seal. A vertically pivotal window as described with reference to Figs. 3 to 6 will provide the required weather seal properties without the dangers of a horizontally pivotal window.

1. A window frame of the type aforesaid including a surrounding framework and a frame in which the window glass can be located, said frame being pivotal inwardly, relative to said framework, about a vertical axis, and a bottom flap, hingedly mounted in the framework between a secured upright position and an inwardlypivoted position, the upper face of the flap and the

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

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Window frames This invention relates to window frames, particularly for windows that can open inwards about a vertical axis, hereinafter referred to as "window frames of the type aforesaid." A major problem with window frames is providing an effectual weather seal, especially for frames of the type aforesaid made of wood. The problem is not as acute with frames made of metal, but these are more expensive and more prone to condensation problems. An object of the present invention is to obviate or mitigate the aforesaid problem. According to the present invention, there is provided a window frame of the type aforesaid including a surrounding framework and a frame in which the window glass can be located, said frame being pivotal inwardly, relative to said framework, about a vertical axis and a bottom flap, hingedly mounted in the framework between a secured position upright and an inwardly-pivoted position, the upper face of the flap and the lower face of the frame being engagable when the flap is in the upright secured position, to provide a weather-tight seal and to prevent inwardly pivotal movement of the window. Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is an inside elevation of one embodiment of a window frame according to the invention; Fig. 2 is a sectional side elevation to a larger scale; Fig. 3 is a sectional plan on the line Ill-Ill of Fig. 2; and Figs. 4 to 6 are views corresponding to Figs. 1 to 3, illustrating a second embodiment of the window frame according to the invention. Referring firstly to Figs. 1 to 3, the window frame comprises a surrounding framework 10 within which is a frame 11 carrying a pane of glass 12. The frame 1 1 is hinged at 13 to one side of the framework 10 to be pivotal inwards relative thereto. Below the frame 1 1 is a flap 14 which is hinged at 1 5 to the bottom end of the framework to be pivotal inwardly thereof between an upright position and a 'swing-back' position. In the upright position, the flap engages the sides of the framework with a ball-catch 1 6 or the like and can be snibbed to the framework to secure it against opening. As best shown in Fig. 2, the flap has contoured upper and lower faces which form rebates 20, 21. The upper rebate 20 is outwardly-facing and engages a complementary rebate 22 in the lower face of the frame 1 Thus, while the flap is upright and secured to the framework, the frame 11 cannot pivot inwards due to the raised portion 23 of the rebate 20. A gasket 24 is located between the rebates 20, 22 and a gasket 25 is located below the lower face of the flap 14 and the external sill 26 of the framework 10. Thus, while the flap is in the raised secured position, a weather seal is provided at both top and bottom of the flap 14 and the window 1 1/1 2 is secured against opening. Only when the flap is released and pivoted down inwards can be window 1 1/12 be opened inwards. In a second embodiment, like parts are given like numbers primed. The frame 11' carrying the window pane 12' is pivotal centrally about vertical pivot hinges 13', so that only a part of the frame 11' will extend inwards when the frame is pivoted about its hinges. A beam 30 is located across the bottom of the framework and engages the frame 11' when the latter is closed. One half of the beam 30 is in the form of a flap 14' which when pivoted down inwardly, allows inward movement of the frame 11. The lower face of the flap 1 4' has a rebate 21' and a gasket 25' between the rebate 21' and the external sill 26'. The upper face 31 of the flap 14' is inclined downwardly and outwardly, and the lower face 32 of the frame 1 1 ' has a complementary incline. A gasket 24' is provided therebetween so that when the flap is in the raised, secured position and the window is closed a weather seal is provided at both top and bottom of the flap 14' and the window 11'/12' is prevented from opening. The flap 14, 14' may be a narrow strip or a panel of substantial height relative to the strip shown in the drawings. The frame 1 1, 11' may carry double-glazing. The provision of gaskets between the frame 11, 11' and the framework 10, 10' removes the need for a close fit between the frame and framework, so there can be a space to allow several coats of paint to be applied; also, a certain amount of warp can take place without destroying the weather seal qualities of the window frame. The window frame may be used in existing casements, i.e. as replacement window frames and also in new buildings. The framework is preferably made of wood but may be of any other suitable material. The centrally pivotal window is a much safer construction than horizontally pivotal windows which, until now, have been preferred because of the more efficient weather seal. A vertically pivotal window as described with reference to Figs. 3 to 6 will provide the required weather seal properties without the dangers of a horizontally pivotal window. CLAIMS

1. A window frame of the type aforesaid including a surrounding framework and a frame in which the window glass can be located, said frame being pivotal inwardly, relative to said framework, about a vertical axis, and a bottom flap, hingedly mounted in the framework between a secured upright position and an inwardlypivoted position, the upper face of the flap and the lower face of the frame being engagable when the flap is in the upright secured position, to provide a weather-tight seal and to prevent inwardly pivotal movement of the frame.

2. A window frame as claimed in claim 1, in which the flap has contoured upper and lower faces which form rebates complementary with a rebate in the lower face of the frame and with an external sill of the framework respectively.

3. A window frame as claimed in claim 2, in which gaskets are located in said rebates to form the weather tight seals.

4. A window frame as claimed in claims 1, 2, or 3 in which the frame is pivotal along one side thereof.

5. A window frame as claimed in claim 1, 2 or 3 in which the frame is pivotal about a central axis.

6. A window frame as claimed in any one of claims 1 to 5, in which the flap, in the upright position, is secured by ball catches.

7. A window frame as claimed in any one of claims 1 to 6, in which the flap, in the upright position, is secured by a sliding bolt fastener, i.e. a snib.

8. A window frame of the type aforesaid substantially as hereinbefore described wihh reference to Figs. 1 to 3 or Figs. 4 to 6 of the accompanying drawings.