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Bolt stump In lever tumbler locks, a bolt stump is a rectangular part located above the talon, and passes through the slot in the levers as the bolt moves. [4] Bottom pin See key pin. Break A break in the pins is a separation in one or more sections of the pin used to encode the lock for a specific key or set of keys in a master keying system ...
The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.
A tubular lock and key. A tubular pin tumbler lock, also known as a circle pin tumbler lock, radial lock, or the trademark Ace lock popularized by manufacturer Chicago Lock Company since 1933, is a variety of pin tumbler lock in which a number of pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.
Rotating bolts are found in delayed blowback, gas-operated, recoil-operated, bolt action, lever-action, and pump-action weapon designs. In some forms of delayed blowback, the rotating bolt is used as the delay mechanism: the bolt head rotates as the firing pin strikes, locking the chamber until the gas pressure reaches a safe level to extract.
A draw latch is a two-part latch where one side has an arm that can clasp to the other half, and as it closes the clasp pulls the two parts together. It is frequently used on tool boxes, chests, crates, and windows and does not need to be fully closed to secure both halves. A spring bolt lock (or night latch) is a locking mechanism used with a ...
This example has two bolts: a sprung latch at the top, and a locking bolt at the bottom. Right: the box keep, installed in the doorjamb. A mortise lock (also spelled mortice lock in British English) is a lock that requires a pocket—the mortise—to be cut into the edge of the door or piece of furniture into which the