When was the lock and the key invented?
We are now widely used in the ball lock, the United States is a small Nerus Yale invented in 1860. While the invention of the keys was later than the ancient Egyptians were the world's first to use the keys. Their lock is a wooden door bolt into a slot, the top of the groove there is a wooden bolt. When the plug is inserted into the groove, the wooden plug will be inserted into the hole of the bolt. In this way, the bolt will be very strong, you must use the key to open. As the Egyptian lock can only be used in the side of the door bolt is not conducive to the flexibility to open and close, so the Greeks on this basis, but also developed a lock from the other side can be opened. The keys made by the Greeks are a curved stick, shaped like a small sickle with a farmer. But there are some keys up to 3 feet, must be carried on the shoulders to move, quite heavy. The Romans can be said to be the most sophisticated locksmith of ancient times, and they have considerable research on the standard of making keys, and have learned that the nails at the end of the key are cut into various shapes.
Lock and the key of the exact time of the invention has not test, and the ancient civilizations have their own invention of the lock and key.
Ancient lock is a historical testimony. In ancient times, the wise man has learned to put personal valuables wrapped in animal skins, tied with a rope outside, the last opening marked with a special knot. And knot can only use a tool called "bone file" to pick up. Knot and bone file, is the key to the lock and key.
According to the information recorded, the earliest lock made of wood, its vulnerable only as a symbolic lock. China's metal lock first appeared in the Han Dynasty, is the reed structure lock. Ming and Qing dynasties is the heyday of ancient locks, mainly copper and iron. 50 years of last century, the lower cost of low-hook hook lock, leaf lock, marbles lock one after another into the Chinese market, the ancient Chinese lock from the stage of history. Through the glowing of the vicissitudes of the ancient lock, enjoy the profound history of Chinese culture.
????Primitive human life through the cave, in order to prevent the invasion of the beast and protect the goods, they use heavy stone to block the hole, and this can be said that the earliest and most direct original safety device.
