A combination lock is a kind of locking device in which a sequence of symbols, usually numbers, is used to open the lock. Combination locks utilize a combination of numbers or symbols in order to get them open. They do not use a key like other types of locks. A combination of numbers or symbols are entered into the through the use of a single rotating dial or several rotating discs that directly interact with the locking mechanism of the device. After the correct sequence of numbers or symbols is entered, the lock opens.
There are several types of combination locks available today. These are:
The multiple-dial lock is considered one of the least secure locks available in the market. They are usually used in low-security situations, such as securing a bicycle. They are built using several rotating discs with notches cut unto them. A pin with several teeth is inserted into the lock to secure it. When the discs are rotated and the notches align with the teeth on the pin, it opens.
Opening a multiple-dial lock without the combination is relatively easy. Due to the irregularities in the production of the different parts, you can just pull the pin outwards while rotating the discs on the lock. Continue to rotate the disc until a slight click is heard. This sound indicates that the teeth have matched the disk notch. Continue the same process on all the other discs until the lock is open.
Single-dial locks are much safer than the Multiple-dial locks. These are usually found on padlocks or safes. Their mechanism consists of a rotating dial. To open them, you must first dial the first number clockwise, the second number counterclockwise, and so on. After dialing the last number in the combination sequence, all the notches will be aligned and the lock will open.
Even though Single-dial locks are safer, some of the early combinations padlocks were relatively easy to open. For example, some of the early Master padlocks could be easily opened by pulling on the shackle of the lock, then turning the dial until it completely stopped. By doing this, you could guess the combination very easily and with little effort.
Some of the newer combination locks utilize electronic circuitry instead of mechanical tumblers to secure your valuables. These electronic marvels require you to enter a combination on numbers on a keypad. If the sequence of number is the correct one, the lock opens.
A great advantage of this type of lock is the fact that a physical key is not needed. You only need to remember the numeric combination in order to open it. The only disadvantage is if the combination number is leaked, a new combination must be programmed into the lock.
Whether you forgot the combination or are unable to open the safe because of mechanical problems, it’s best to call a trusted locksmith near me to avoid damaging the lock and making it more difficult to open or repair. A local locksmith professional can decode or change the combination to a dial safe and often reset an electronic safe lock back to its factory defaults.