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Sargent & Greenleaf, Inc., more commonly known among Safe and Vault technician circles as S&G, is a U.S. company that manufactures combination locks, key-operated safe and safe deposit box locks, high security military padlocks, and associated equipment.
In 1857 Sargent had designed the "Sargent's Magnetic Bank Lock", said to be the first successful key changeable combination lock. In 1880 Sargent connected one of his combination locks to a delay timer, creating the first time-delay combination locks .
Joseph Bradford Sargent (December 14, 1822 in Leicester, Massachusetts – July 15, 1907 in New Haven, Connecticut) was the founder of Sargent & Co., a manufacturer of locks and hardware, with headquarters in New Haven, Connecticut, and mayor of that town.
Such a device was created by two students from the Massachusetts Institute of Technology, which took 21,000 tries to open a Sargent and Greenleaf 8500 lock on a Diebold Safe. Lockmasters, Inc. markets the QX3 Combi Autodialer (LKMCOMBI) that works on a variety of 3 and 4 Wheel combination safe locks.
Two warded lock keys and a homemade skeleton key. A skeleton key (also known as a passkey [1]) is a type of master key in which the serrated edge has been removed in such a way that it can open numerous locks, [2] most commonly the warded lock. The term derives from the fact that the key has been reduced to its essential parts. [2]
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Ten officers with the Nashville police department's specialized investigative unit will be reassigned following an unauthorized release of writings from the shooter who killed six people ...
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