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Chubb Locks is a former brand name of the Mul-T-Lock subsidiary of the Assa Abloy Group, which manufactures locking systems for residential, secure confinement and commercial applications. When the brand licence expired in 2010 the name ceased to be used, with the same locks sold as Yale or Union locks.
A Chubb detector lock is a lever tumbler lock with an integral security feature, a re-locking device, which frustrates unauthorised access attempts and indicates to the lock's owner that it has been interfered with. When someone tries to pick the lock or to open it using the wrong key, the lock is designed to jam in a locked state until ...
In 1818, Charles Chubb and his younger brother, Jeremiah Chubb, founded the Chubb Company and opened a workshop for making locks on Temple Street in Wolverhampton, England. Two years later, they opened a shop at 57 St.Paul's Churchyard in London. In 1835, Charles Chubb expanded the business and took out a patent for a burglary-resistant safe.
Some modern safe locks are made of lightweight materials such as nylon to inhibit this technique, since most safe exteriors are made of much denser metals. The Chubb Manifoil Mk4 combination lock contains a lead shield surrounding part of the lock to defeat such attempts to read its wheels.
Higher security lever locks (such as the five-lever) usually have notches cut into the levers. These catch the locking bolt and prevent it from moving if picking is attempted (similar to the security pins in a pin tumbler lock). The Chubb detector lock is a variation of the lever lock which was designed to detect and prevent picking attempts.
In August 2000, Chubb sold Chubb Locks, its lock and safe making unit, to Assa Abloy, and concentrated on security systems such as door access and CCTV systems. [8] In May 2002, Chubb held intensive acquisitions talks with Sweden-based Securitas AB, the world's biggest security services business.
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John Chubb (10 December 1816 – 30 October 1872), was an English locksmith and inventor who patented many improvements to locks, safes and strong rooms. [1]He succeeded his father Charles Chubb, who had founded the family company of Chubb & Son.
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