Locks and keys helped long before the birth of Christ. They are mentioned frequently inside the Old Testament along with mythology. In the Book of Nehemiah, chapter 3, looking at their home that when repairing that old gates of the Capital of scotland - Jerusalem - probably in 445 B.C. - they "set inside the doors thereof, and the locks thereof, along with the bars thereof." They were large and crude in design; yet their principle of operation was the forerunner of the modern pin-tumbler locks nowadays. At this time, locks were created of wood.
The oldest example of a mechanically lock is discovered among the ruins with the palace of Khorasabad in Niveveh. This lock has come to be known as an Egyptian door lock, due to it's widespread used in Egypt. It utilized a crossbar set into two surface mounts that's completely enclosed save for the small opening for your key. Movable pins were dropped by gravity into cavities around the crossbar and locked the entranceway. As the key was inserted in to the lock it would move hidden pins out of the way and allow the crossbar being removed. This is regarded as the forerunner in the modern pin tumbler style of lock that we use today.
Locksmith in Jerusalem
The Greeks used a lock that worked by fastening the wooden bolt and staple to the inside of the door. The true secret a sickle-shaped wooden or iron key manipulated and lift the bolt. This lock, compare to the latter one provided little security.
The Romans fabricated the first metal lock determined by Egyptian principles. They designed pins of numerous shapes with keys and keyholes. A lot of the keys were elaborate designs, like birds and flowers. These folks were also invented the ward locks, which with modifications continue to be very much in use. Wards are projections around the keyhole, which prevented the lock from being turn without the proper key. The roman also fashion miniature keys that may be worn as rings. But ward lock were easy to pick.
Millions of locks were needed to keep this vast and growing mountain of property secure and intact. The locksmith sets about designing locks whose cost and strength linked to the value of what they were protecting. These were kept on their toes by thieves and burglars.
In the 14th century, the locksmith's guilds became prominent. For being accepted as master locksmith, one had to create and submit an operating lock and key to the guild. Because guild gained control over locksmiths, including regulating techniques and prices, corruption increased. The actual result was locks were made to be displayed from the guild hall and not for installation purposes. Consequently, some beautiful locks and keys came into existence with no technological or security advances.
During the 1940s, with the start of the Second World War, many locksmith specialists was a priceless commodity. The locksmiths who were in business during this era was lacking time to process the invention in their field but focus totally on the war. Many locksmiths were drafted into service while others continued to work as locksmiths in this era.
Today Locksmiths sell, install, maintain and repair locks as well as other security devices. They also make copies of keys, replace lost keys and open locks when needed. They have to apply skills in metalwork, woodwork, mechanics and electronics.