GB2198180A

GB2198180A - Window stay

Info

Publication number: GB2198180A
Application number: GB08727003A
Authority: GB
Inventors: Francis Naylor
Original assignee: TLV
Current assignee: TLV
Priority date: 1986-12-05
Filing date: 1987-11-18
Publication date: 1988-06-08
Also published as: GB8727003D0

Abstract

A window stay arm 10 comprises a channel section cover 12, an insert 14 having holes or slots 40, 42 for stay pegs, security clips and the like and a pivoting bracket (26 Figs. 1-4) attached to the cover at axis 20. Both parts 12, 14 may be formed from mild steel by cutting and bending, the insert suitably being retained in the channel of the cover by punching over the latter at locations 32. <IMAGE>

Description

Window Stays DESCRIPTION This invention concerns window stays and in particular window stay arms.

Window stay arms are cast in on piece usually from an alloy, such as mazak (a zinc/aluminium alloy).

The cost of production is relatively high due to the cost of the raw material and the time required for cooling after casting and before further processing can be carried out on the stay arms.

The object of this invention is to provide a window stay arm that may be manufactured quickly and cheaply.

According to the invention there is provided a window stay arm that comprises a cover part and an insert, the insert having location for at least window stay pegs.

The cover and insert are preferably manufactured by cutting and bending operations from sheet material.

The preferred sheet material is mild steel, which can result in upto a two thirds reduction in material costs compared with alloys used for making window stay arms by casting. As an alternative to mild steel strip, aluminium, brass, stainless steel or other like materials in sheet form could be used. Overall costs of production of a window stay arm of the invention may also be lower than for an equivalent cast arm as the production time can be greatly reduced because no cooling time is necessary.

Furthermore, the preferred window stay arms of the invention can be lighter than equivalent cast arms.

The cover of the stay arm of the invention is preferably a generally channel section member and is preferably formed with locations for the insert, such as ledges on the inside of the cover on which the insert can sit. Any suitable means for holding the insert in place may be used. One convenient way is to punch material of the cover over onto the insert.

A pivotable bracket for attachment to a window frame may be provided at one end of the cover say with pin through the sides of the cover and a part of the bracket between the sides of the cover. The other end of the cover part is preferably of shallower channel section to provide the stay arm with a position under which a finger or fingers may fit in order to lift the stay arm.

The cover part of the stay arm of the invention may be provided with any suitable decorative finish.

The insert of the window stay arm of the invention is preferably an elongated rectangle that has holes and/or slots formed therein to provide the locations for window stay pegs, security clips and the like.

The preferred cover and insert together form a box section which is recognised as being a strong construction. At the same time the outer appearance of the stay arm of the invention with a suitable finish can have the appearance of a conventional cast stay arm.

This invention will now be further described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a side view of a window stay arm; Figure 2 is a plan view from below the window stay arm of Figure 1; Figure 3 is a plan view from above of the window stay arm of Figure 1; Figure 4 is an end view of the window stay arm of Figure 1; and Figure 5 is an exploded view of the window stay arm of Figure 1.

Referring to the drawings, a window stay arm 10 comprises an elongated generally channel section upper part 12 and an elongate generally rectangular insert 14. Both parts 12 and 14 are made of mild steel by a cutting and bending process.

The upper part 12 is cut at one end 16 to a shallower channel depth than the remainder of the part 12 to provide a position where a finger can be placed under the stay arm to lift it. The other end 18 of the upper part has holes 20 in the sides 22 thereof to receive a pin 24 of a pivotable mounting bracket 26 of a conventional type for the stay.

Between the ends 16 and 18 of the upper part 12, each sides 22 thereof has an internal ledge 28 formed therein. The ledges 28 are to provide a seating for the insert 14. The insert 14 is held in place by punching over metal of the upper part 12 at spaced locations 32 of the insert 14.

The insert 14 itself has a slot 40 near the mounting bracket end and a series of holes 42 along its length. These holes 40 are for location of a conventional window stay peg located on the fixed frame of the window the choice of hole for the peg depending upon how far open the window is to be held open. To hold the window closed two choices are provided by the insert 14. A conventional two peg fixing may be used in which the first peg locates in the slot 40 and the second peg in the furthest hole 42 therefrom.

Alternatively, one peg may be used in combination with a security clip of the type described in our copending U.K. Patent Application No. 2160581A. Again the peg locates in the slot 40 but the security clip locates in a slot 44 provided near the other end of the insert. At the slot 44, the insert 14 is actually bent and formed so that when in position, the sides of the slot 44 are lower than the rest of the insert 14.

That is to provide sufficient clearance for a security clip.

As an additional security measure, the end 16 the upper part 12 may have a hole 50 (shown in dotted lines in Figure 5) to receive the peg of a security device of the type wherein a locking part is secured onto the peg over the stay arm.

Claims

1. A window stay arm comprising a pivoting bracket attachment, a cover part and an insert, the insert having locations for at least window stay pegs.

2. A window stay arm as claimed in claim 1, wherein the cover part is made from sheet material by cutting an bending operations.

3. A window stay arm as claimed in claim 1 or 2, wherein the insert is made from sheet material by cutting and bending operations.

4. A window stay arm as claimed in claim 1,2 or 3 made of mild steel.

5. A window stay arm as claimed in any one of claims 1 to 4, wherein the cover is a generally channel section member having locations for the insert.

6. A window stay arm as claimed in claim 5, wherein said locations are ledges on the inside of the cover on which the insert sits.

7. A window stay arm as claimed in any one of claims 1 to 6, wherein the insert is held in the cover by means of punching material of the cover over onto the insert.

8. A window stay arm as claimed in any one of claims 1 to 7, wherein one end of the cover is shallower to provide a finger hold.

9. A window stay arm as claimed in any one of claims 1 to 8, wherein the insert is an elongated rectangle having holes and/or slots therein to provide locations for window stay pegs, security clips and the like.

10. A window stay arm as claimed in any one of claims 1 to 9, wherein the pivoting bracket is provided at one end of the cover with a pin through the sides of the cover and a part of the bracket.

11. A window stay arm substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.