lock The nobles and merchants who had money and jewels in the Middle Ages not only needed locks and keys to lock the doors, but also locked safes, drawers and wardrobes, which spurred the creativity of craftsmen. In the Middle Ages, padlocks were generally used, and the inserted locks were replaced by tumblers that pivoted. Another improvement that makes shackles more difficult is the insertion of a number of so-called gutters between the key and the keyhole, the key teeth being just passed through the gutter. Modern locks and keys can be said to start with the 1778 Brammer lock: this lock has six sliders - a foil with a groove that allows the slider to enter the proper position before unlocking with the key. The inventor of this lock was Brammer, one of the tech-savvy British at the time, who invented many things, including hydraulic presses, toilets, printing machines, paper machines and soda machines. Since then there have been Chubb lock: it is called Chubb of Portsmouth a small hardware business invented in 1818. Chabu later established a fire safe factory. His main improvement to the lock was the addition of a "probe", and if someone tried to lock it, the probe fixed the pin. Yell Lock, invented by American Yell, has been in use since the 1860s. It is a tether lock with a small, flat key that interlocks with the lock slot. Its security lies in the infinite variety of keys. In fact, no two Yer locks are the same, but there is a universal key that can open many locks, such as the hotel's key. Since then, the password lock of the lock safe has appeared. If you do not know the code composed of a series of numbers, you can't open the lock. There is also a time lock for locking the vault. There is one or two clocks in the lock, which cannot be opened until the scheduled time.
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Explore the history of ancient locks and keys
The lock was invented by the Chinese and was invented at least 4,000 years ago. It is basically a mortise lock that can be plugged in and opened, hung outside the door to lock the door, opened with a braided hook - the key, the Egyptian improved the device, they made the key inserted There are some protrusions that match the recessed parts in the keyhole. The Romans used the various locks that evolved from the Egyptian locks and brought them to the conquered parts of Europe. However, the latch of the Roman lock is small, and a spring is used to press the mirror.