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An improved "shear" electromagnetic lock was patented on May 2, 1989, by Arthur, Richard and David Geringer of Security Door Controls, an access control hardware manufacturing firm. The device outlined in their designs was the same in principle as the modern magnetic lock consisting of an electromagnet and an armature plate.
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.
The bible [1] is the part of a pin tumbler lock that contains the pins and pin stack springs as well as the pin stacks themselves. The driver pins of a pin-tumbler lock are located in the bible. Bit The section of a key which enters a lock, which has the key cuts formed in it and which engages the bolt or tumblers of the lock.
Metal fire-resistance rated door with a lockset consisting of a locking latch bolt operated by lever handle with an escutcheon that encompasses the locking mechanism.. A lockset (alternatively lock set) is the hardware and components that make up the locking or latching mechanism that can usually be found on a door or other hinged object but can also include sliding doors and dividers. [1]
Home decor accessories Home accessories (also termed home decor ) are decorative and functional items used to enhance the aesthetic appeal and comfort of living spaces. These items are typically easy to replace, move, and rearrange, allowing for flexibility in interior design.
In 1994, Home Interiors and Gifts was sold to the investment firm of Hicks, Muse, Tate & Furst in a $1 billion leveraged buyout. [1] [8] The company sold more than $850 million annually in silk and polyester flower arrangements, porcelain puppies and other decorative household items at home parties.
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Keys for some types of warded locks often have a characteristic symmetrical shape. The one on the right is a skeleton key. A warded lock (also called a ward lock) is a type of lock that uses a set of obstructions, or wards, to prevent the lock from opening unless the correct key is inserted. The correct key has notches or slots corresponding to ...
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