Friction supporting stay

Abstract

 The invention relates to a friction supporting stay of the kind shown in Patent 2081803 which has a track member 16 and mounted on the track member is a nose-cap 22. The nose-cap 22 has a lateral extension 23 which extends beyond the outer edge 24 of the track 16. By forming this lateral extension on the nose-cap, the nose member will invariably be prevented from riding along the outside of the nose-cap, and will also come into the interior part of the nose-cap.
Another advantage is that a narrower track may be used without any danger of the nose member failing to locate in and engage the nose-cap.

Description

[0001] This invention relates to a friction supporting stay, particularly of a type used to support windows, and is an improvement upon the stay shown and described in our UK Patent No. 2081803B.

[0002] The friction supporting stay has a track member, usually attached to the window frame and a bar usually attached to the window light. The bar carries a nose member which cooperates with the nose-cap so that as the window is closed the nose member enters the nose-cap and assists in pulling the window to its closed position.

[0003] A problem has arisen, particularly where heavy windows are employed or where the hinges are of exceptional length, in that as the strut wears it is possible for there to be sufficient play in the strut for the nose member to miss the nose-cap and ride over the side of it, which prevents the window closing properly.

[0004] A further problem arises when it is desired to use narrow stays, and therefore narrow tracks. The width of the nose-cap has to be narrowed normally to align with the narrower stay and track, but this reduces the possibility of the nose member engaging properly into the nose-cap.

[0005] An object of the invention is to provide a nose-cap in which both of these disadvantages may be overcome, and therefore to provide a more efficient form of stay.

[0006] According to the present invention there is a friction stay of a kind comprising a track with a slider in it and a bar connected to the slider through a link, the bar having a nose member which cooperates with a nose-cap on one end of and in line with the track so as to ensure full closing movement of the bar to align with or overlap the track when the strut is in its closed position, characterised by the nose-cap having a lateral extension protruding sufficiently far beyond one edge of the track so as to ensure that the nose member will not inadvertently ride over the outside of the nose-cap.

[0007] The nose-cap may have assymetrically inclined internal surfaces and the nose member may have corresponding surfaces.

[0008] The nose-cap may be of plastic material.

[0009] In the accompanying drawings:

Figure 1 shows the upper part of a stay of known kind, in elevation, to illustrate the problem;

Figure 2 shows the upper portion of a stay incorporating the present invention; and

Figure 3 is an enlarged detail of the stay shown in Figure 2 showing a nose-cap in accordance with the present invention.

[0010] In Figure 1 is shown a track 10 of a stay of the kind shown in Patent Specification 2081803 except that in this instance the nose-cap is of a different internal shape to that shown in the earlier Patent Specification.

[0011] The track 10 carries a nose-cap 11 and a bar 12 carries a nose member 13. A portion of a link 14 is also shown, the remaining details of the stay being as shown in Patent 2081803.

[0012] It will be seen that it is possible for the nose member 13 to ride over the side 15 of the nose-cap 11 if there is undue wear or play in the strut.

[0013] In Figure 2 is shown the upper portion of a stay modified in accordance with this invention.

[0014] The stay has a track member 16, a bar 17, a slider 18 to which the bar is connected by a link 19, a brace 20 of which only a part is shown, a strut 21 which interconnects the bar 17 and the brace 20.

[0015] Mounted on the track 16 is a nose-cap 22 shown in detail in Figure 3. The nose-cap 22 has a lateral extension 23 which extends beyond the outer edge 24 of track 16.

[0016] By forming this lateral extension of the nose-cap the nose member will invariably be prevented from riding along the outside of the nose-cap (in the manner shown in Figure 1) and will always come into the interior part of the nose-cap where the surfaces 25 and 26 cooperate to ensure that the hinge closes properly and the window is brought into its fully closed position.

[0017] The invention may be applied to a nose-cap which has an assymetric internal surface 26 as shown in Figures 2 and 3 or one which has a symmetrical internal surface as shown in our earlier Patent 2081803 or any other form of internal surface.

Claims

1. A friction stay of a kind comprising a track (10) with a slider (18) in it and a bar (17) connected to the slider (18) through a link (19), the bar having a nose member (13) which cooperates with a nose-cap (22) on one end of and in line with the track so as to ensure full closing movement of the bar to align with or over­lap the track when the strut is in its closed position characterised by the nose-cap (22) having a lateral extension (23) protruding sufficiently far beyond one edge of the track (16) so as to ensure that the nose member (13) will not inadvertently ride over the outside of the nose-cap (22).

2. A stay according to claim 1 characterised in that the nose-cap (22) has assymetrically inclined internal surfaces (26) and the nose member (13) has corresponding surfaces (25).

3. A strut according to claim 1 or claim 2 and characterised in that the nose-cap is of plastic material.

Drawing