GB2432187A

GB2432187A - Window fastening with locking pin and release trigger bar built into length of handle

Info

Publication number: GB2432187A
Application number: GB0621417A
Authority: GB
Inventors: Andrew Robert Holt
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-12
Filing date: 2006-10-27
Publication date: 2007-05-16
Also published as: GB0621417D0

Abstract

A window lever handle lockable by means of a locking pin 4 that is activated and released using a compression release trigger bar 1 that is built into the length of the lever handle. The handle may also be deadlocked. When squeezed, the compression release trigger bar 1 may retract the locking pin 4 from an aperture 4a incorporated in the Fixing Plate 7. A secondary sliding locking switch 11A may comprise a movable button pin key 18-18a which when extracted in the locked position makes the fastener inoperable. This window lever handle has been designed for easier use by the elderly and less abled.

Description

1 2432187 AUTOMATIC LOCKING WINDOW HANDLE FASTENER WITh PIN

KEY SECURITY

This invention relates to an automatic locking Window Fastening Lever Handle for use on modern window systems.

There is much emphasis about security on today's modem PVCu windows systems in that all Window Fastening Lever Handles require some kind of locking facility.

There are already various types of automatic locking fastener handles on the market. Most are the espagnolette type which incorporate either a Push to Lock Button' or a Push to Release Button' which is the most favoured style.

Whilst these styles are effective they can however create some problems for the operator, particularly where opening vents are located in high or difficult to reach situations such as over a kitchen sink unit. This is even more of a problem for those of limited ability and who may suffer from some form of physical ailment, being crippled with arthritis or by being disabled for example. The ageing process itself also creeps in its own problems over time.

People with arthritic hands for example or with some other form of disability, find that depressing a Push to Release Button' with the thumb and rotating the Lever Handle of the fastener through 90 degrees at the same time and before pushing a window open can be a very difficult manoeuvre. Just accessing the Window Fastening Lever Handle alone can be a troublesome task for some people. Consequently many windows remain unopened and unused.

Invariably when operating such Window Fastening Lever Handles the hand has to be palm downwards. Sometimes it's easier if the hand can be used palm upwards particularly for those who are elderly, of limited ability or disabled.

This new innovation in window handles for the fenestration industry allows for the latter practice to be applied as it has been designed with the elderly and less abled persons in mind. However, it also includes the younger and more mobile person, a consideration which is often overlooked in design. The styles of Window Fastening Lever Handles that are commonly applied today are suitable for today's younger and more agile person, but even they will become burdensome to us all as we get older and develop debilitating ailments. This new style of design should do much to mitigate and eliminate these present and future difficulties.

The locking mechanism of this new innovative Window Fastening Lever Handle herein described allows for an automatic locking fastening handle to be released by hand palm downwards palm upwards by using fingers only, without the operator having to resort to depressing a Push to Release' button inwardly with his/her thumb extended and always palm downward, as is the current procedure on mostly all Window Fastening Lever Handles fitted today. To realise one of the difficulties associated with Push Release' button fasteners the reader should attempt to try opening a left handed button fastener with the right hand. A scenario someone with a disability might have to endure at some point.

To overcome the variable operating problems associated with current window fastening designs by those with physical difficulties, the present invention proposes incorporating an automatic locking device which incorporates a Compression Release Trigger Bar built into the length of the Lever Handle means of the fastener which, when the operator grips or pulls it towards him/her, it compresses and the Automatic Locking Pin automatically disengages and the operator turns upwardly the Lever Handle with the fingers (palm up) therefore releasing the window frame for opening. The Window Fastening Lever Handles locking mechanism is automatically re-engaged once the window is closed and fasteners Lever Handle is turned downwards to the horizontal position whereupon the Automatic Locking Pin engages automatically into its housing to lock the window.

The locking mechanism can then be further deadlocked' by a basic Sliding Switch or the innovative Sliding Locking Switch herein which incorporates a Pin Key locking feature. The alternatives are to employ the standard push button' means of release/locking or by a key locking device fitted within the product, or any combination of these if so desired.

The innovative Sliding Switch with a removable Pin Key provides for a double dead locking facility without the use of a conventional style of Key. By sliding the locking Sliding Switch into position, thus securing the Automatic Locking Pm in the locked position, and then pulling out the Button Pin Key, the window is securely locked. To operate the user simply re-inserts the Pin Key and slides the locking Sliding Switch back to the unlocked position.

Furthermore, by employing this new fastener in conjunction with an already existing window reaching aid already being marketed, a very effective window operating system, that will open up a new world by providing greater ease of use and convenience to the disabled, elderly and infirm persons will have been created. At the same time this new innovation gives consideration to the younger able bodied persons who will later experience the difficulties that come with age.

As more and more new properties are being built for the elderly; retirement villages, care homes etc. this new innovation will no doubt prove to be an asset towards their convenience, comfort and needs whilst providing and promoting easier security and safety operating procedures.

The Compression Trigger Release Bar design allows for much easier control of the automatic locking and unlocking procedure of Window Fastening Lever Handle than current designs especially when used in conjunction with an independent remote reaching aid, already available, and particularly so for those who suffer with ailments that restrict movement and those who have grasping difficulties.

The Pin Key Button' can be supplied in various styles to accommodate people who experience difficulty grasping with the fingers.

It is therefore the intention of this new Window Fastening Lever Handle design described herein to mitigate the difficulties associated with existing designs of lever window handle and provide for a much simpler releasing and securing facility for those people with limited access and limited physical abilities.

REFERENCE TO DRAWINGS

The preferred product is depicted and described within the text for Figure 1 of this document.

The innovation comprises two main innovative features: A Compression Release Trigger Bar means and: A Sliding Locking Switch means with a novel removable Pin Key.

The Compression Release -Trigger Bar.

A Compression Trigger Release Bar (1) is built into the Lever Handle (2) part of the fastener which is secured by a pivotal means (3). The Compression Release Trigger Bar (1) is proud of the Lever Handle casing when in the locked position to enable release by applied pressure.

When the Compression Release Trigger Bar (1) is squeezed into the body of the Lever Handle it compresses a Spring (5,) (17), and withdraws the Automatic Locking Pin (4) from its housing in the Fixing Plate (7) thus releasing the Lever Handle and allowing the window to be opened.

Releasing the Compression Release Trigger Bar (1) allows the Spring (5) (17), or Magnets (6) to eject the Automatic Locking Pin outwardly so as to enable automatic locking by allowing the Automatic Locking Pin (4) to re-enter it's housing aperture located within the Fixing Plate (7) and the Compression Release Trigger Bar (1) is returned to its normal position which is raised proud of the Lever Handle casing (2).

The Pm Key Sliding Lockable Sliding Switch. (Featured in figures 1, la,) The Automatic Locking Pin (4), can be made secure by a Sliding Locking Switch means (11), which incorporates a new removable Pin Key (18 -18a) innovation.

The Pin Key (18 -18a) is required to operate the new innovative Sliding Switch (11) means. (Figures 1, Ia, lb. ic) refers. The operator simply slides the Sliding Switch left or right with the Button Pin Key (18-18a) in place so as to release or secure the Automatic Locking Pin (4). The user can then remove the Pin Key (18) with the Pin Key Button (1 8a) rendering the fastener inoperable.

Removal of the Pin Key (18-18a) disables the Sliding Switch means (1 1A) until it is replaced. The advantage of this system is that there is no requirement to turn a conventional key in order to lock /unlock the Lever Handle. The Pm Key (18 -1 8a) makes for easier use compared to push buttons and conventional Key Locks when used by the less abled. The Button (18) part of the Pin Key design can be that of a conventional key form to facilitate easier grasping.

A conventional key locking means (16) or a push button means for use with the Compression Release Trigger Bar (1) can be produced as a separate design or in conjunction with a Sliding Switch (11) means although preference is given to the Pin Key Locking Sliding Switch (1 IA) with Pin Key (18 -18a).

DRAWINGS: (Parts List) Compression Trigger Release Bar (1) Fastener Lever Handle (2) Pivotal means (3) Automatic Locking Pin (4) Housing (4a) Spring -Flat (5), Coiled (5a) Magnets (6) Fixing Plate (7) Main Body of the fastener (8) Spindle (9) Keep Plate (10) Sliding Switch I Lock (11) New Pin Key Sliding Lockable Sliding Switch (1 1A) Securing Bush (12) Bush (13) Spacer (14) Spring Loaded Ball Bearing Catch or Pip' (15) Depression (ISa) for 15 Key Locking Device (Barrel)(16) Spring -Convex (17) Pin Key (18) Button (ISa) Retaining (Gripping) Spring (19) Slot (20) Stop (21) Screw Fixing Chamber (21) Screw Chamber Cover Plate (23) Sliding Locking Switch Chamber (24) Key Barrel Lock (25) Key (25 a) Male-Female union (rn-f) Housing (H) Screw Apertures (a, b) Slide projections (c, d) The invention will now be described with reference to the accompanying drawings: FIGURE 1 Illustrates the preferred design in three dimensional detail incorporating both new mnovations.

Preferably, the Compression Release Trigger Bar (1) is freely pivoted at a point (3) within a housing (I-I) at one end of the Lever Handle (2).

At the opposite end of the Compression Release Trigger Bar a male protrusion (m) is preferably located within a recess (f) in the Automatic Locking Pin (4).

Squeezing the Compression Release Trigger Bar (1) compresses a Convex fonned Spring (17) which is prevented from being displaced preferably by a stop (23). This action pulls the Automatic Locking Pin downwardly to release the Lever Handle (2) for turning upwardly so as to open the window. By turning the Lever Handle upwardly the Automatic Locking Pin (4) is preferably retained in its housing aperture within the main body (8) of the fastener and preferably by the Fixing Plate (7). When closing a window the Lever Handle (2) is turned downwardly and preferably automatically ejects the Automatic Locking Pin (4) back into the Fixing Plate (7) housing aperture (4a) thus securing the window in an automatically locked position.

Preferably the new Sliding Locking Switch (1 1A)means is moved to beneath the Automatic Locking Pin (4) means and is held in place preferably by a pressured Ball Bearing or Pip' means (15) which rests within a depression (15a) to prevent any involuntary movement thus dead locking the fastener. (See fig lOa).

Preferably operation of the Sliding Lockable Switch is by use of a Button (1 8a) 210 means which moves the Sliding Switch (1 IA) via a Pin' (18) means along a slot means (21) fabricated within the Lever Handle (2) part of the fastener.

The Pm Key (18 -1 8a) can then be removed manually to prevent any operation or movement of the Sliding Locking Switch (I 1A) means making the Window Fastening Lever Handle deadlocked and secure.

The Pin means (18) of the Pin Key is offered back into the Sliding Switch means (1 1A) which is preferably via a slot means (21) in the Lever Handle (2) sited in the Main Part (8) of the Fastener opposite the Automatic Locking Pin (4) location.

Preferably a Retaining (Gripping) Spring means (19) applies tension upon the Pin (18) thus gripping and making secure the Pin Key (18-18a) means within the Sliding Locking Switch (1 1A).

The Stop (23) preferably prevents the Sliding Locking means (1 1A) from moving too far forward and lines up the Pin Aperture ready for the Pin Key to be re-inserted. Only by applying the Pm Key (18-i 8a) means does the Sliding Locking Switch (11 A) become operable again.

230 The Sliding Switch (1 1A) may also or alternatively have pressure applied to the Bearing or Pip' (15) by locating a shallow Convex formed Spring between the Lever Handle and the Sliding Switch block within the Sliding Switch Chamber (24) should a Ball Bearing type catch (15) not be accommodated.

The figure also shows in cross section a cut away of the Spindle (9) means to reveal preferably securing Bushes (12) and (13), which also preferably incorporates a Spacer (14) means for smooth operation.

The Fixing Plate (7) means is secured to a window frame by preferably passing 240 securing means through apertures (a, b) within a fixing chamber (22) whilst a Cover Plate (23) for the screw fixing Chamber (22) finishes the appearance.

FIGURE la This illustrates the Sliding Locking Switch (1 1A) in the locked position beneath the Automatic Locking Pin (4). The Pin Key (18 -I 8a) is both extracted and inserted in the direction of the arrow shown. Preferably, the retaining Spring means (19) can be seen in the naturally occurring sprung open' position and projecting outwardly into the housing aperture of the Pin Key Pin (1 8a) whereby 250 the outward force is applied to the Pin (I 8a) as the Pin is inserted.

FIGURES lb& ic Illustrate just two Pin Key styles as an example of the varying geometric designs which can be applied to this innovation.

Whilst the manufactured product can include any combination of the features described herein within the text and illustrations featured; the Compression Release Trigger Bar (1) and Sliding Locking Switch (1 1A) with Pin Key (18- 260 1 8a) security combination, will be unique within the fenestration industry and of

products for the elderly and less abled field.

FIGURE 2 Shows a cross section of the Window Fastening Lever Handle and Lever Handle with the cross hatched parts showing the Main Body of the fastener and Lever Handle.

A Compression Release Trigger Bar (1) is incorporated within the casing of the 270 fasteners Lever Handle (2) and is shown in the automatic locked position with the Compression Release Trigger Bar (1) standing proud of the Lever Handle casing (2). The Compression Release Trigger Bar (I) is secured and preferably pivoted at one end (3) within the casing of the Lever Handle (2).

The Compression Release Trigger Bar (1) may also be secured by being freely located inside a return housing (1-1) at the end of the Lever Handle (fig 2a).

Preferably the Compression Release Trigger Bar (1) and Automatic Locking Pm (4) are produced as two separate components, (fig 3a), but may be manufactured as an integral all in one' component.

Preferably the effective outward tension on the Compression Release Trigger Bar (1) is by a Spring means (5), Magnets (6) or a combination of both.

The Automatic Locking Pin (4) is activated preferably by way of a Spring means (5) or by Magnetic means (6) being of the same Magnetic poles which repels the Automatic Locking Pin (4) back into the housing aperture (4a) in the Fixing Plate (7).

When the Compression Release Trigger Bar (1) is squeezed or pulled back into the handle the Spring (5) is compressed and the Automatic Locking Pin (4) 290 retracts itself from its housing aperture (4a) the Fixing Plate (7).

The Automatic Locking Pin (4) automatically engages a housing aperture (4a) within the Fixing Plate (7) when the Compression Release Trigger Bar (1) is released to automatically lock the Lever Handle (2) fastener.

Preferably the Automatic Locking Pin (4) is housed within the Main Body (8) of the fastener. Preferably the Lever Handle (2)is integral with the Main Body (8) of the fastener and secured to the Fixing Plate (7) by means of an operating Spindle (9) Bushing mechanism.

Preferably, the Fixing Plate (7) comprises at least two apertures (a) & (b) through which screws, rivets or any other suitable securing means are passed into the window frame.

FIGURE 3 Shows the innovative part of the Window Fastening Lever Handle with the 310 Compression Release Trigger Bar (1); and the Automatic Locking Pin (4) in its component form.

Preferably the Compression Release Trigger Bar (1) incorporates a pivotal fixing point (3) at one end of the Lever Handles casing. (See also fig 3a).

The Automatic Locking Pin (4) is an integral part of the Compression Release Trigger Bar (1). It can however preferably be as separate components as shown in (fig 3a). The Automatic Locking Pm (4) is still operated by the Compression Release Trigger Bar (1) but preferably connected by means of a free moving 320 male and female union (m, f) Preferably the Spring mechanism (5) (17) is of either convex, fiat or coiled form and provides the means to eject the Automatic Locking Pin (4) into the Automatic Locking Pin housing aperture (4a) situated in the Fixing Plate (7) whilst at the same time pushing the Compression Release Trigger Bar (1) outwardly and proud of the Lever Handle casing (2).

Magnets (6) may also be used as a means of ejecting the Automatic Locking Pin (4) into the locking position by way of ejecting the Compression Release Trigger 330 Bar (1) mechanism.

FIGURE 4 Shows an alternative method of assembly whereby the Compression Release Trigger Bar (1) and the Automatic Locking Pin (4) are still as an integral component but this time the whole piece is simply placed into position and secured via a keep plate (10) which simply slots into place in the main part of the fastener (8).

340 FIGURE 5 Shows the Compression Release Trigger Bar (1) and Automatic Locking Pin (4) as an all in one component secured within the fastener by a clip-able pivot means (3) at one end and a keep plate (10) at the opposite end. A flat Spring (5), a coiled Spring (5a) and Magnets (6) are also illustrated.

FIGURE 6 Shows the above details in cross section but preferably with a deadlocking means which in this illustration is demonstrated a simple Sliding Locking Switch (11) 350 means. The direction of travel is indicated by the arrow. Point (x) is the unlocked position and is illustrated. Position (y) is the deadlocked position. This Sliding Switch however may be replaced with a Double Action Push Button locking/release means or a conventional Key Locking means.

FIGURE 7 Shows a three dimensional representation of the fastener, with the face view (F) showing the Sliding Locking Switch (11); and the rear view (R) showing the Automatic Locking Pin (4) and the Compression Release Trigger Bar (1).

360 A chamfered guidance slot (g) allows the Automatic Locking Pin (4) to be coaxed back into its housing as the Lever Handle (2) is turned downwardly to the closed position so as not to break the Automatic Locking Pin (4) or prevent the Lever Handle from closing properly.

A preferred alternative is for the Spindle (9) to be close to the Automatic Locking Pin (4) whereupon the Automatic Locking Pin (4) is retained inside its housing aperture (4a) in the Main Body (8) of the fastening handle by the Fixing Plate (7) when the Lever Handle is in the unlocked position. (See figure 1).

FIGURE 8 Shows further components of the device.

Fig. 8a. The Spindle (9), a round and stepped Bush (12) which is located within in the Fixing Plate (7) and which passes through to the Main Body of the fastener (8). Preferably a second inner Bush (13) which has a square aperture through which the Spindle (9) passes, is situated within the outer Bush (12) creating a fixing for the Spindle (9) and Fixing Plate union. This allows the Spindle (9) to be set in place within the Main Body (8) and be independently rotating of the 380 Fixing Plate (7). Preferably a Spacing means (14) allows for clearance between the Main Body (8) of the fastener and the Fixing Plate (7) and may be manufactured as part of the outer Bush (12) or provided as a separate item.

Fig. 8b. Illustrates the Sliding -Locking / Release Sliding Switch (11) with top, bottom, and end views. Preferably a Spring loaded Ball Bearing Catch means, (15) or a moulded Pip' permits the Sliding Switch (11) to stay in the open or locked position by clicking into a small depression manufactured into the Main Body of the fastener (8).

390 Preferably slide projections (c & d) are placed between runners built into the Main Body of the fastener (8) to permit a sliding action of the Sliding Switch.

Although a complex Sliding Switch (11) is illustrated a simpler device can be used by eliminating the upper part (11.1) (see fig 1) and employing the lower half only.

The Sliding Switch may be pressured by an alternative Spring means located within Sliding Switch Chamber to prevent any involuntary movement.

However, the new and preferred innovative Pin Key Sliding Locking Switch as 400 illustrated in figure 10, is favoured.

FIGURE 9 Shows an enlarged cross section of the main part of the fasteners body wherein the components are housed.

The Compression Release Trigger Bar (1) with the Automatic Locking Pin (4) and the Sliding Switch (11) are shown with the Automatic Locking Pin (4) in the 410 automatically locked position which is preferably created by the pressure means of a Spring (17). The Sliding Switch (11) is shown in the unlocked position.

By sliding the Sliding Switch (11), towards the Lever Handle, in the direction of y', the mechanism inserts a male securing block (p), into a recess in the Automatic Locking Pin (4) thus making secure the Automatic Locking Pin (4).

At the same time, the design of the Sliding Switch (11) allows for the Automatic Locking Pin (4) to be completely blocked as the lower part of the Sliding Switch (11) travels between the base of the Automatic Locking Pin (4) and the outer part of the Lever Handle (2) casing effectively making the whole of the locking 420 system more solid within the handle.

The figure also shows the Spindle (9) housed in the Main Body (8) of the Fastener and which is secured preferably by passing through stepped Bush (12) which in turn preferably houses a second Bush (13).

Two small depressions (1 5a) can be seen in the diagram above the Sliding Switch. (11). These are to receive preferably a single Spring loaded Ball Bearing Catch (15) incorporated within the upper part of the Sliding Switch (11), or a moulded Pip' and prevents the locking Sliding Switch (11) from involuntarily 430 sliding out of position.

Preferably a Convex formed Spring (17) is utilised at one end which pushes the Automatic Locking Pin (4) into its housing in the Fixing Plate (7). By compressing the Release Trigger Bar (1) the Spring (17) flattens out in the direction z'. Upon releasing the Compression Release Trigger Bar (1) the Spring (17) returns to its convex form and by doing so pushes outwardly the Compression Release Trigger Bar (1) and the Automatic Locking Pin (4) returns into its aperture housing (4a) in the Fixing Plate (7) thus automatically and securely locking the Window Fastening Lever Handle.

FIGURE 10 As figure 9 but shows a Barrel Key Locking means (25), and key (25a) as an alternative to the Sliding Locking Switch (11) illustrated in the previous diagram.

Also shown is a Convex formed Spring (17) manufactured so as to be fixed at one end by it being located into a securing slot (s).

A Press to Lock/Release -Double Action Button' means (not shown), could be substituted within the housing for the Key Locking Barrel (25) means; or a Push 450 Button with a key locking facility could be incorporated as a further alternative to the design.

Whilst the manufactured product can include any combination of the features described herein within the text and illustrations featured; the Compression Release Trigger Bar (1) and Sliding Locking Switch (1 1A) with Pin Key (18- 1 8a) security combination, will be unique within the fenestration industry and of

products for the elderly and less abled field.

Claims

CLAIMS

1. A rotating Window Fastening Lever Handle device with an automatic 460 locking facility made releasably engageable and lockable by means of an Automatic Locking Pin activated by the compressing and releasing action of a Compression Release Trigger Bar built into the length of the Lever Handle part of the fastener and which can be further deadlocked by the activation of a secondary and integral Sliding Switch means with additional Pin Key releasing and locking means.

2. A Window Fastening Lever Handle as described in Claim I which incorporates a Compression Release Trigger Bar.

470 3. A Window Fastening Lever Handle as in Claim 2 which incorporates a separate Automatic Locking Pin which ejects into the fasteners fixing means.

4. A Window Fastening Lever Handle as in Claim 2 which incorporates an integral Automatic Locking Pin which ejects into the fasteners fixing means.

5. A Window Fastening Lever Handle as in Claim 1 which incorporates a Sliding Locking Switch means.

6. A Window Fastening Lever Handle as in Claim 1 which incorporates a rotating Spindle means.

7. A Window Fastening Lever Handle as in Claim I which incorporates fixing means.

8. A Sliding Locking Switch means as in Claim 5 which incorporates a Pin Key Locking means.

490 9. A Sliding Locking Switch as in Claim 5 which incorporates a Pin Key releasing means.

10. A Sliding Locking Switch as in Claim 5 which incorporates a Pin Key Pin retaining means.

11. A Sliding Locking Switch as in Claim 5 which incorporates a position retaining means.

12. A Sliding Locking Switch as in Claim 5 which incorporates a switch 500 sliding means.

13. A switch as in Claim 5, 8, 9, 10, & 12 which incorporates an operating Pin Key Button means.

14. A Pin Key means which is locatable inside the lockable switch means via an aperture in the Lever Handle fastener.

15. A Compression Release Trigger Bar as described in Claim 2 which incorporates an ejecting pressure means.

16. A Compression Release Trigger Bar as described in Claim 15 which incorporates a spring means.

17. A Compression Release Trigger Bar as described in Claim iS which incorporates Magnetic means.

18. A Compression Release Trigger Bar as described in Claim 15 has a combined spring and Magnetic ejection means.

520 19. A Compression Release Trigger Bar as described in Claim 2 which has pivotal means at one end.

20. A Compression Release Trigger Bar as in Claim 15 which incorporates a male union point for an Automatic Locking Pin.

21. An Automatic Locking Pin as in Claim 3 which has a female union point.

22. A Compression Release Trigger Bar that is secured within the body of the Window Fastening Lever Handle at one end by a keep plate.

23. A Compression Release Trigger Bar that is retained within the body of the Window Fastening Lever Handle by fabricated design.

24. A Window Fastening Lever Handle as described in Claim I which incorporates a fixing means to an opening window.

25. A Window Fastening Lever Handle as in Claim 1 which incorporates an operating Spindle means.

540 26. An operating Spindle as in Claim 25 which is secured within the main body of the fastener.

27. A Window Fastening Lever Handle as in Claim 24 which has the window fixing means secured to the operating Spindle means with a bushing means containing a suitably shaped aperture to receive the Spindle.

28. A Window Fastening Lever Handle as in Claim 27 which further has the fixing means secured to the Lever Handle and main body of the fastener by a secondary outer bushing means inside of which the bushing means 550 as described in Claim 27 is inserted.

29. A Window Fastening Lever Handle as in Claim I which incorporates an operating Spindle means as in Claim 26 in which the bushing means is secured within the Fixing Plate only.

30. A Window Fastening Lever Handle as in Claim I which incorporates an operating Spindle means as in Claim 26 in which the bushing means is secured within the main body of the Lever Handle fastener only.

560 31. A Window Fastening Lever Handle as in Claim I which incorporates a key locking means.

32. A Window Fastening Lever Handle as in Claim 1 which incorporates a Push Button locking and releasing means.

33. A Window Fastening Lever Handle as in Claim I which incorporates a combination of Claims 31 and 32.

34. A Window Fastening Lever Handle as in Claim 1 which incorporates any 570 or all of the Claims 2 to 33 inclusive.