Why lockable chain window winder??

[Skew ChiDAMN!!]

Actually it,s all a joke as windows can be broken.
Or they could ram raid your house.

It's often easier and less conspicuous to come in through the roof, if tiled. DAMHIKT.

[Lappa]

Hi,
Actually it,s all a joke as windows can be broken.
Or they could ram raid your house.
Regards

You would have to be one heavy sleeper to sleep through a ramraid on your house

[Beardy]

The main reason is that insurance companies want you to have locks on all openings to insure you.

From a marketing point of view you can leave your window partially open and you still can’t put your hand in and wind it out far enough to disengage the chain from the sash to gain full access

Like all locks they only keep the honest people out

[ian]

Can a wiser person tell me the propose of a lock on a chain window winder?
When it is locked the window cannot be opened or closed. Why?

Attachment 448091

there's also a (BCA?) requirement that windows with a drop greater than a certain distance be lockable so that ankle biters and bigger can't open the window and fall out.

[Beardy]

there's also a (BCA?) requirement that windows with a drop greater than a certain distance be lockable so that ankle biters and bigger can't open the window and fall out.

Not quite right, the BCA requirement is that the openings on the windows are permanently restricted to open a maximum of 90 or 110mm if the fall distance is greater than 3.4 m from memory. There is no requirement for them to be able to be locked, just a restriction on how far they open
The newer chain winders have a restriction option on the back of them that you can activate

[ian]

Not quite right, the BCA requirement is that the openings on the windows are permanently restricted to open a maximum of 90 or 110mm if the fall distance is greater than 3.4 m from memory. There is no requirement for them to be able to be locked, just a restriction on how far they open
The newer chain winders have a restriction option on the back of them that you can activate

OK
Lately I've been looking at older residential flat buildings -- most have been retro-fitted with window locks that restrict how far a window can be opened.

[Beardy]

OK
Lately I've been looking at older residential flat buildings -- most have been retro-fitted with window locks that restrict how far a window can be opened.

Yes I did a couple last week, I just Googled up a video that shows you what I mean, https://m.youtube.com/watch?v=Hfpi7hO63Sc
Some are like in the video and there are others that have a little rubber stopper you fit in a similar manner.
I haven’t used the non locking ones as they have never been asked for but I would say they work exactly the same

[Wongo]

My neighbors have same brand of winders but 10 years newer than mine. The interesting thing is my keys can unlock theirs and their keys can unlock mine. They are identical.

Just another log to the fire.

[malb]

The chain winders are not particularly secure if left moderately ajar for ventilation, lock or no lock. With a opening of about 70mm, baddies wandering around with a 200mm shifter can get a grip on the chain and twist it breaking the chain. Know this cause we were robbed that way in 86. To appease insurance co, we installed keyed locks on all windows, some keyed bolts, some keyed winders. Thieves come back 5 weeks later (enough time for insurance to pay out) and tried again, couldn't open any windows, so they put the shifter through one instead. Didn't get anything the second time because we hadn't replaced the stuff they took the first time.

[malb]

My neighbors have same brand of winders but 10 years newer than mine. The interesting thing is my keys can unlock theirs and their keys can unlock mine. They are identical.

Typical common locks have 5 pins or disks inside and each can have 5 or 6 possible key depths. About 25-30 possible combinations overall, so its isn't uncommon for them to be interchangable between properties, except when you are in the store needing to buy multiples and there are 10 units on the shelf and each has a different combination. Also these days some window manufacturers bulk order all their locks etc as the same random combination to facilitate same keying and avoid the problem I just identified. So if they supply windows for a strip of houses in the street built at the same time by the same builder, chances are the window locks along the strip will have matching keys.