Standard deadlocks have keyholes on both sides, which means if you lock the door when you are inside, you will need the key to get out. Deadlock mode renders the lock inoperable, making it more difficult for thieves to enter, and also to escape. Whilst deadlocks are effective, they need to be used with caution.
If it's a house lock you always tension away from where the lock goes into the frame. So if the handle is on the left side of the door, you would tension clockwise to unlock it. If the pins are on the bottom, the exact opposite applies.
Double Cylinder Deadbolts have a keyed cylinder on both sides. This is a good option for doors with glass or windows since an intruder can't break into the door even if the glass/window is broken.
Double-cylinder locksets are keyed on both sides; they function with a key from both the exterior and the interior of the door. This means that a home or business owner would need to use a key to engage or retract the lock bolt even from the inside.
Deadbolts will always open in the direction away from the bolt, or that is towards the hinges of the door. So with deadbolts just remember tension towards the hinges and away from where the bolt jams into the door frame.
However, the two sides of a lock assembly are a mirror image of one another, and any lock can be installed with the keyhole facing either direction. Any key-in-knob or deadbolt lock can be easily reversed if it has been installed improperly or you need to change the direction of the keyhole for any reason.
Pull back the latch and hook bolt by pushing the handle down. This makes it possible for the door to be opened. Push the handle down and turn the key away from the lock edge to open the secondary door.
In the U.S., there is no single comprehensive law against dual-cylinder deadbolts. Individual cities and states have local property and fire codes that may prohibit the use of dual-cylinder deadbolts. The code may prohibit the use of dual-cylinder deadbolts in some buildings and allow them in others.
In lock: Development of modern types. … in England, patented a double-acting tumbler lock. A tumbler is a lever, or pawl, that falls into a slot in the bolt and prevents it being moved until it is raised by the key to exactly the right height out of the slot; the key then slides the bolt.
It's quite useful to have two locks in the door separating the house/apartment from the surrounding world but use just one of them. Locks happen to break, although that's quite rare. If one of the locks starts malfunctioning you can just stop using it and use the other one until you fix the first one.
Tip. Cut around the perimeter on both sides of the deadbolt using a sharp utility knife to avoid peeling or damaging the door's finish during lock removal. Have on hand both a flat-head and Phillip's screwdriver to remove the deadbolt. Some locksets incorporate both types of screws.
Double-cylinder deadbolt locks are not considered safe for emergency exits. Some safety experts don't believe they belong in residential homes at all. In fact, double-keyed deadbolts are actually illegal in some places.
One Sided Deadbolts
With single-sided deadbolts, you have only a thumb turn on the inside of the door. The bore hole for the deadbolt is drilled only partially through the door, so from the outside you don't see the deadbolt.
Can you unlock a door if the key is on the other side? Yes, you can, providing that your door has been furnished with a frictioned cylinder lock or one that has an emergency function. These two types are designed to be unlocked with a key even if there's another key inside on the other side of the door.
One way to check if the lock is engaged is to look at the latch on the side of the door. When the lever is pushed down to open the door, you can see if the latch retracts. If it does, the lock is in an unlocked state. If it doesn't retract, the lock is in a locked state.
Install New Latch Plate
The tapered side of the turning lock should be facing the strike plate on the door frame.
Dimple locks are basically pin-cylinders that use the flat side of the key's blade as the biting area. So rather than cutting into the edge of the key as in a standard pin-cylinder, dimple locks turn the key ninety degrees and cut onto the flat side.
A cipher lock is a lock that is opened with a programmable keypad that is used to limit and control access to a highly sensitive area. Many organizations use cipher locks to control access to their server rooms, development laboratories or storage rooms.
When executed correctly, lock bumping is effective in nearly 90 percent of all cylinder-type locks produced today. Perhaps one of the most disconcerting aspects of lock bumping is that it can often go undetected, which means that your home can be broken into without any signs of forced entry.
First, let's define a double-keyed deadbolt. It's a deadbolt that locks from the inside and the outside with a key. This means if the door is locked, there's no getting in or out without a key.
While the single-cylinder deadbolt only features a locking mechanism requiring a key on one side, the double-cylinder deadbolt has it on both. This means that a key will be required to turn the lock both on the inside of the door and the outside. This is the main difference between these two types of deadbolts.
SmartKey is an advanced security breakthrough which allows you to rekey the lock in seconds. To rekey your lock with an entirely new key, simply insert the functioning key, turn a quarter turn clockwise, insert the learning tool, remove the existing key, and insert a new key. That's it!
If you're locked on the other side, look for a tiny hole on the doorknob. Push an eyeglasses screwdriver, a paper clip hammered flat, or a very small butter knife into this hole. Push it straight through as far as you can, and turn or twist it until it catches a groove and the lock clicks open. Pick the lock.
To open a deadbolt without a key, a drill machine is one of the most efficient ways to open the lock successfully and easily. You just need to find a drill machine to unlock the lock if you are ashore out of the house. Just by holding the drill on the lock, you can initiate drilling.