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This is a trapped-key interlock on the door of an electrical switchgear cabinet. It is attached with one-way security screws to discourage casual removal, which would defeat the interlock scheme. Trapped-key interlocking utilizes locks and keys for sequential control of equipment and machinery to ensure safe operation. Trapped-key interlocks ...
A Wordlock letter combination lock.. A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed symbols which directly interact with the locking mechanism, or through an ...
The Bramah lock used a cylindrical key and keyhole, as does the current lock. The end of the key has a number of slots of different depths which, when inserted into the lock and pressed against spring tension, would depress a number of wafers to a specified depth and enable the key to turn and open the lock.
A lock is a mechanism that secures buildings, rooms, cabinets, objects, ... James Sargent described the first successful key-changeable combination lock in 1857.
A lock and key is a pair of devices used to secure an object or location from unauthorized access. Lock and Key or Lock & Key may also refer to: Arts, entertainment ...
"You think a key is a key and will keep everything safe," she said. Locksmith Greg Brandt, owner of Brandt Locksmith in Kansas City, said its unusual, but not unheard of to find two cars with the ...
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