¡¡¡¡Abroad, the ancient Greeks have found a very reliable lock, but the key is larger, to carry on the shoulders, it is difficult to improve in the average family. The ancient Indians were made into another bird-shaped "lock", keyhole hidden in the trembling of the party. Modern lock up ¢Ÿfirst by the 18th century British invented the "welding fishing lock." The ball lock we are currently using is the American Little Nero Yale invented in 1860. The invention of the key to be later than the lock ¢Ÿancient Egyptians is the world's first use of the key. Their lock is to insert a wooden door bolt into a slot, the groove at the top of a wooden bolt. When the door bolt pierce the groove, the wooden bolt will pierce the hole of the bolt. How come, the door bolt is very strong, must be opened with the key to.

    As the Egyptian lock can only be used on the side of the bolt, the bad luck to open and close, so the Greeks on the basis of this, and to explore a can open from the other side of the lock. The key made by the Greeks was a curved stick, which was shaped like a small sickle for the farmer. However, there are some keys up to 3 feet, must be carried on the shoulder to move transfer, quite heavy. The Romans can be said to be the most sophisticated of the ancient locksmith, they are quite standard on the manufacture of key research, has learned how to cut the nail at the end of the key into a variety of different shapes.

    Primitive people live a cave life, in order to security, and sometimes to promote the boulder to cover the hole, it is not prepared to thieves but the beast. Private ownership, the thief presented, so the lock was born. Far more than three thousand years ago, China has a lock. However, the earliest lock without authority, but made the appearance of fierce animals such as mountain Jun, would like to thief to scare away, can only be said to be a means of the lock. I heard that Luban is the first person to install the lock on the organ. From the relics and written records reflect the situation, the ancient lock is by two plate spring elastic task. Until now, this spring is still in use.