Next up will cover the pros and cons.
How does a keyed chain door lock work.
How does it open.
Having your locks keyed alike is very beneficial if you want to open close all your door locks with one key.
The technology isn t exactly new.
More product details close.
We use keys and locks all the time but how do they work.
The animation shows a so called pin tumbler lock in which small pins line up with grooves in a key before the key can turn.
There are many different kinds of locks but the most common is called a pin tumbler lock.
The lock will keep the door from going past a cracked open door position.
Can be unlocked with key from outside or inside.
Key locks contain a small cylinder that runs down the middle of the doorknob and into the door.
There are similar security devices that use a bar instead of a chain right.
The further in you push the key the more pins it lifts.
Security chains are available keyed or un keyed.
Every key has a slightly different profile of raised areas so it fits only the lock it s intended to.
This is polished brass keyed chain door guard this is polished brass keyed chain door guard is from the first watch security brand and is for added door security.
A bump key will not work on a lock that has anti bump security measures in place.
The chain can be locked with a key keeping it from being unlocked without authorization.
It has a key.
The right amount of pressure and torque have to be applied to a bump key in order to unlock a door without a key.
As the key turns the pins divide along the edge of the cylinder permitting it to revolve.
Plated steel chain and die cast keeper secures door while allowing viewing and ventilation.
As far working it from the inside it works as a regular chain so your alzheimer s person would still be able to get out.
A sensible alternative to the classic security chain.
The main advantages for having multiple door locks with one key keying alike are.
I would suggest getting a dead bolt that is keyed on both sides.
An article published in the november 1946 issue of popular science describes how it all works.
When you push the jagged edge of the correct key 5 into the lock it pushes the pins upward against the force of the springs 6.
When outside you just open the door reach in and use your key to unlock the chain.
Want to know if keying alike is a good idea or not.
In order for a bump key to work its size has to correspond to the size of the keyway it is being used on.
Keyed alike means one key fits all locks for example your front and back door locks can both use the same key or every lock in an office can use the same key.
Inside the cylinder are all the parts that work together with the key to lock or unlock the door.
