GB2165573A

GB2165573A - Windows

Info

Publication number: GB2165573A
Application number: GB08525045A
Authority: GB
Inventors: Kenneth William Piper
Original assignee: Piper And Co K W
Current assignee: Piper And Co K W
Priority date: 1984-10-11
Filing date: 1985-10-10
Publication date: 1986-04-16
Also published as: GB8425743D0; GB8525045D0

Abstract

A window comprises an outer frame 1, an upper inner frame 2, and a lower inner frame 3, pivotally mounted in the outer frame 1 and movable between an open position and a closed positions in which the base 2b of the upper frame 2 bears against the top 3b of the lower frame 3. Thus in the closed position the window has an outward appearance similar to a conventional sash and casement window. <IMAGE>

Description

SPECIFICATION Pivotally mounted windows This invention relates to windows of the type having pivotally mounted frames.

Conventional sash and casement windows have a number of disadvantages. They require counterbalance mechanisms to be built into the frameworkfor normal operation. It is difficult to arrange them in such a way as to allow easy access to the outside for cleaning. The sliding action of the windows can also make it difficult to achieve a satisfactory seal between the parts thus causing draughts.

Modern swing and pivot type windows overcome these disadvantages.

However it is found that, when renovating old buildings which originally used sash and casement type windows, modern types of window tend not to compliment the overall visual appearance of the building.

It is an object of the present invention to provide a window which combines the visual appearance of sash and casement windows with the operating advantages of pivotally mounted type window units.

According to the present invention there is provided a window comprising an outer frame, an upper inner frame and a lower inner frame, the upper and lower inner frames being pivotally mounted in the outer frame and movable between open positions, and closed positions in which the planes of the inner frames are parallel to the plane of the outer frame and spaced apart laterally of one another such that the lower part of the inner face of the upper frame bears against the upper part of the outer face of the lower frame, the window having in its closed position the appearance of a sash and casement window from the outside.

Preferably the pivotal mountings on the inner frames are at the mid points of side members of the inner frames.

Preferably also the frames are of timber construction.

Preferably also sealing members are provided to provide a seal between the frames when the window is in the closed position.

Preferably also the inner frames are provided with safety catches to prevent the inner frames being opened beyond a predetermined amount, the safety catches being releasable to allow the inner frames to pivot around to allow access to the outside of the window for cleaning.

Preferably also there is sufficient friction in the pivotal mountings of the inner frames to allow them to be self supporting in any angular position.

Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a front view of an improved window made in accordance with the present invention; Figure 2 is a rear view of the window of Figure 1; Figure 3 is a sectional side view of the window of Figure 1 in a closed position; Figure 4 is a sectional side view of the window of Figure 1 in an open position; Figure 5 is an exploded sectional detail side view to a larger scale of the window of Figure 1; Figure 6 is a detail sectional top plan view of part of the window of Figure 1; Figure 7 is a detail front view of part of the window of Figure 1; and Figure 8 is a detail sectional top plan view of an alternative embodiment of a window in accordance with the present invention.

Referring to Figures 1 to 7 of the drawings, an improved window comprises an outer frame 1, an upper inner frame 2 and a lower inner frame 3.

The frames 1, 2 and 3 are of timber construction and the inner frames 2 and 3 are glazed.

The upper frame 2 and the lower frame 3 are pivotally mounted in the outer frame 1 by way of pivots 4 and 5 respectively. The upper part la and lower parts 1 b of the outer frame 1 are stepped to engage corresponding steps 2a and 3a on the upper inner frame 2 and lower inner frame 3 respectively.

Sealing members (omitted for clarity) are provided to seal between the outer frame 1 and the inner frames 2 and 3 when the window is in its closed position (Figure 3).

In the closed position the planes of the inner frames 2 and 3 lie parallel to the plane of the outer frame 1 with the base 2b of the upper inner frame overlapping the top 3b of the lower inner frame 3.

The inner frames 2 and 3 are a close fit within the outer frame 1 so that the outside view of the complete window has no unsightly gaps between the various parts ensuring that the pivots 4 and 5 are not visible. In addition the upper innerframe 2 has horns 2c extending downwardly at either side. The overall visual effect of the window in its closed position is thus virtually identical to a conventional sash and casement window.

To open the window either of the inner frames 2 and 3 can be pivoted about the pivots 4 and 5 respectively to the positions shown in Figure 4.

Safety catches are provided to prevent the frames 2 and 3 inadvertently opening beyond a predetermined position. In addition the friction in the pivot 4 and 5 is sufficient to hold the frames 2 and 3 in an open position and prevent them from closing under their own weight. For cleaning the safety catches can be released to allow the frames 2 and 3 to pivot completely round and thus allow the outside of the glass to be reached easily.

Figure 8 shows an alternative way in which the lower inner frame 3 can be mounted in the outer frame 1. This type of mounting allows the lower inner frame 3 to be moved within the outer frame 1 to a position were it leaves sufficient clearance between it and the frame to allow the window to be used as a fire escape.

Modifications and improvements may be made without departing from the scope of the invention.

1. Awindowcomprising an outerframe, an upper inner frame and a lower inner frame, the upper and lower inner frames being pivotally mounted in the outer frame and movable between

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

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Pivotally mounted windows This invention relates to windows of the type having pivotally mounted frames. Conventional sash and casement windows have a number of disadvantages. They require counterbalance mechanisms to be built into the frameworkfor normal operation. It is difficult to arrange them in such a way as to allow easy access to the outside for cleaning. The sliding action of the windows can also make it difficult to achieve a satisfactory seal between the parts thus causing draughts. Modern swing and pivot type windows overcome these disadvantages. However it is found that, when renovating old buildings which originally used sash and casement type windows, modern types of window tend not to compliment the overall visual appearance of the building. It is an object of the present invention to provide a window which combines the visual appearance of sash and casement windows with the operating advantages of pivotally mounted type window units. According to the present invention there is provided a window comprising an outer frame, an upper inner frame and a lower inner frame, the upper and lower inner frames being pivotally mounted in the outer frame and movable between open positions, and closed positions in which the planes of the inner frames are parallel to the plane of the outer frame and spaced apart laterally of one another such that the lower part of the inner face of the upper frame bears against the upper part of the outer face of the lower frame, the window having in its closed position the appearance of a sash and casement window from the outside. Preferably the pivotal mountings on the inner frames are at the mid points of side members of the inner frames. Preferably also the frames are of timber construction. Preferably also sealing members are provided to provide a seal between the frames when the window is in the closed position. Preferably also the inner frames are provided with safety catches to prevent the inner frames being opened beyond a predetermined amount, the safety catches being releasable to allow the inner frames to pivot around to allow access to the outside of the window for cleaning. Preferably also there is sufficient friction in the pivotal mountings of the inner frames to allow them to be self supporting in any angular position. Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a front view of an improved window made in accordance with the present invention; Figure 2 is a rear view of the window of Figure 1; Figure 3 is a sectional side view of the window of Figure 1 in a closed position; Figure 4 is a sectional side view of the window of Figure 1 in an open position; Figure 5 is an exploded sectional detail side view to a larger scale of the window of Figure 1; Figure 6 is a detail sectional top plan view of part of the window of Figure 1; Figure 7 is a detail front view of part of the window of Figure 1; and Figure 8 is a detail sectional top plan view of an alternative embodiment of a window in accordance with the present invention. Referring to Figures 1 to 7 of the drawings, an improved window comprises an outer frame 1, an upper inner frame 2 and a lower inner frame 3. The frames 1, 2 and 3 are of timber construction and the inner frames 2 and 3 are glazed. The upper frame 2 and the lower frame 3 are pivotally mounted in the outer frame 1 by way of pivots 4 and 5 respectively. The upper part la and lower parts 1 b of the outer frame 1 are stepped to engage corresponding steps 2a and 3a on the upper inner frame 2 and lower inner frame 3 respectively. Sealing members (omitted for clarity) are provided to seal between the outer frame 1 and the inner frames 2 and 3 when the window is in its closed position (Figure 3). In the closed position the planes of the inner frames 2 and 3 lie parallel to the plane of the outer frame 1 with the base 2b of the upper inner frame overlapping the top 3b of the lower inner frame 3. The inner frames 2 and 3 are a close fit within the outer frame 1 so that the outside view of the complete window has no unsightly gaps between the various parts ensuring that the pivots 4 and 5 are not visible. In addition the upper innerframe 2 has horns 2c extending downwardly at either side. The overall visual effect of the window in its closed position is thus virtually identical to a conventional sash and casement window. To open the window either of the inner frames 2 and 3 can be pivoted about the pivots 4 and 5 respectively to the positions shown in Figure 4. Safety catches are provided to prevent the frames 2 and 3 inadvertently opening beyond a predetermined position. In addition the friction in the pivot 4 and 5 is sufficient to hold the frames 2 and 3 in an open position and prevent them from closing under their own weight. For cleaning the safety catches can be released to allow the frames 2 and 3 to pivot completely round and thus allow the outside of the glass to be reached easily. Figure 8 shows an alternative way in which the lower inner frame 3 can be mounted in the outer frame 1. This type of mounting allows the lower inner frame 3 to be moved within the outer frame 1 to a position were it leaves sufficient clearance between it and the frame to allow the window to be used as a fire escape. Modifications and improvements may be made without departing from the scope of the invention. CLAIMS

1. Awindowcomprising an outerframe, an upper inner frame and a lower inner frame, the upper and lower inner frames being pivotally mounted in the outer frame and movable between open positions, and closed positions in which the planes of the inner frames are parallel to the plane of the outer frame and spaced apart laterally of one another such that the lower part of the inner face of the upper frame bears against the upper part of the outerface of the lowerframe, the window having in its closed position the appearance of a sash and casement window from the outside.

2. A window as claimed in Claim 1, wherein the pivotal mountings on the inner frames are at the mid points of side members of the inner frames.

3. A window as claimed in Claim 1 or 2, wherein the frames are of timber construction.

4. A window as claimed in Claim 1, 2 or 3, wherein sealing members are provided to provide a seal between the frames when the window is in the closed position.

5. A window as claimed in any one of the preceding Claims, wherein the inner frames are provided with safety catches to prevent the inner frames being opened beyond a predetermined amount, the safety catches being releasable to allow the inner frames to pivot around to allow access to the outside of the window for cleaning.

6. A window as claimed in any one of the preceding Claims, wherein the inner frames are self supporting in any angular position by virtue of friction in the pivotal mounting of the inner frames.

7. A window substantially as hereinbefore described with reference to Figures 1 to 7 or Figure 8 of the accompanying drawings.