How Does A Keyed Chain Door Lock Work

Key locks contain a small cylinder that runs down the middle of the doorknob and into the door.

How does a keyed chain door lock work. A sensible alternative to the classic security chain. As the key turns the pins divide along the edge of the cylinder permitting it to revolve. The lock will keep the door from going past a cracked open door position. Every key has a slightly different profile of raised areas so it fits only the lock it s intended to.

Next up will cover the pros and cons. Plated steel chain and die cast keeper secures door while allowing viewing and ventilation. It has a key. There are many different kinds of locks but the most common is called a pin tumbler lock.

How does it open. Can be unlocked with key from outside or inside. A bump key will not work on a lock that has anti bump security measures in place. 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.

We use keys and locks all the time but how do they work. The further in you push the key the more pins it lifts. 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. Security chains are available keyed or un keyed.

When the door is unlocked a part called a tang is resting fully inside of the cylinder. The main advantages for having multiple door locks with one key keying alike are. When outside you just open the door reach in and use your key to unlock the chain. I would suggest getting a dead bolt that is keyed on both sides.

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. Keyed security chains as shown left allow you to lock or unlock the chain from the outside if you re dexterous. Want to know if keying alike is a good idea or not. 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.

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. More product details close. Time saver saves time without. The technology isn t exactly new.

Inside the cylinder are all the parts that work together with the key to lock or unlock the door. The chain can be locked with a key keeping it from being unlocked without authorization. There are similar security devices that use a bar instead of a chain right. An article published in the november 1946 issue of popular science describes how it all works.