When you are locked out of a house, a room, a car, an office cabinet, a safe, or a storage box, you need to call someone to help you get to or into the locked space. The locksmith will likely come in a business van that has everything in it he could possibly need because he won't want to waste his time nor yours. Locks come in various shapes and mechanisms and he has to be prepared for all of them.
1) Dead bolts
Dead bolts are a safety feature for your home. They are not all the same. Dead bolts that are standard single sided have a cylinder for the key on the outside of the door. On the inside they have a rosary knob that turns to open or lock the dead bolt from the inside. Your locksmith may recommend a safer dead bolt than the standard single. The double dead bolt is a bit safer because it is locked on both sides of the door with a key. A third type of dead bolt is the safest of the dead bolts. It does have a thumbturn on the inside but can also be locked with a key.
2) Mortise Locks
Businesses generally use these types of locks. You can find these locks on some glass doors, apartment doors as well as some doors to businesses. Your locksmith will know exactly how to deal with Mortise locks. They are screwed into hardware in the center of the door. Set screws that have cams attached to the back of the screws will hold the lock in place.
3) Lever Handle Locks
These are mostly used for the inside of an office. A home could actually be equipped with these locks as well but this would be a rare occasion. They are used in offices more than the knob locks because they can be easier to use. Pushing down on a lever is easier for someone handicapped than turning a knob.
These locks are a locksmith's dream. They are one of the simplest locks to open. Some padlocks can be re-keyable, others not. In addition, some padlocks retain their key when the lock is unlocked so that the key cannot be removed. Other padlocks are bolt-cutter resistant by having a shrouded shackle. It is a part of the lock that raises up, thereby preventing bolt cutters to get a good grip.
5) Combination Lock
Fairly inexpensive combination locks are used for all kinds of purposes. Those combination locks usually have only three numbers or letters. The more sophisticated combination locks are installed on safes, including those in banks, and a locksmith must be quite skilled to open those. The mechanism operates by having several rotating discs and cams that work by interacting with the locking device directly or electronically.
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