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  2. Master Lock - Wikipedia

    en.wikipedia.org/wiki/Master_Lock

    Master Lock is an American company that develops padlocks, combination locks, safes, and related security products. Now a subsidiary of Fortune Brands Innovations, Master Lock Company LLC was formed in 1921 by locksmith -inventor Harry E. Soref and is headquartered in Oak Creek, Wisconsin. [1][2][3] In 1970 the company was purchased by American ...

  3. Master keying - Wikipedia

    en.wikipedia.org/wiki/Master_keying

    Master key turning a pin tumbler lock with two shear points. A master key operates a set of several locks. Usually, there is nothing different about the key. The differences are in the locks the key will operate. These master-keyed locks are configured to operate with two, or more, different keys: one specific to each lock (the change key ...

  4. Rekeying - Wikipedia

    en.wikipedia.org/wiki/Rekeying

    Rekeying was first invented in 1836 by Solomon Andrews, a New Jersey locksmith. His lock had adjustable tumblers and keys, allowing the owner to rekey it at any time. Later in the 1850s, inventors Andrews and Newell patented removable tumblers which could be taken apart and scrambled. The keys had bits that were interchangeable, matching ...

  5. Rotary combination lock - Wikipedia

    en.wikipedia.org/wiki/Rotary_combination_lock

    Rotary combination lock. A rotary dial combination padlock. A rotary combination lock is a lock commonly used to secure safes and as an unkeyed padlock mechanism. This type of locking mechanism consists of a single dial which must be rotated left and right in a certain combination in order to open the lock.

  6. Harry Soref - Wikipedia

    en.wikipedia.org/wiki/Harry_Soref

    Biography. Soref was born in 1887 Bilozirka, Ukraine, then part of the Russian Empire, [2] later immigrating to the United States. [1] In 1921, he founded the Master Lock company in Milwaukee, Wisconsin. [3] The company built locks based on Soref's designs using laminated steel to build strong yet inexpensive locks; he received over 80 patents ...

  7. Chubb detector lock - Wikipedia

    en.wikipedia.org/wiki/Chubb_detector_lock

    Chubb detector lock. 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 ...

  8. Locksmithing - Wikipedia

    en.wikipedia.org/wiki/Locksmithing

    Locksmithing is the science and art of making and defeating locks. Locksmithing is a traditional trade and in many countries requires completion of an apprenticeship. The level of formal education legally required varies from country to country from none at all, to a simple training certificate awarded by an employer, to a full diploma from an ...

  9. Glossary of locksmithing terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_locksmithing_terms

    Master pin In a pin tumbler lock, a master pin is an optional, usually short, disk-like pin placed between the top and bottom pins. Its purpose is to allow two differently-cut keys to open the lock. Master pins are also called master wafers. Plug The plug is the part of a cylinder lock which is designed to turn when a key is inserted. Plug follower