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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 ...
A combination padlock. Combination locks do not use keys. Instead, the lock opens when its wheels are lined up correctly to display the correct combination. A padlock was invented by John I. W. Carlson in 1931 (a patent was granted in November 1934) that has both a combination on one side and a key on the other.
The lock company, Slaymaker, Barry and Company, was founded in 1888 by Samuel R. Slaymaker and John F. Barry of Connellsville, Pennsylvania. Samuel Slaymaker had become interested in switch and signal locks while working for the Pennsylvania Railroad as a civil engineer. In 1894 the company was reorganized and renamed the Slaymaker–Barry ...
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 ...
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.
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 ...