All rights reserved. See also:. Linus Yale Biography. Trending Here are the facts and trivia that people are buzzing about. Is Vatican City a Country? The Languages of Africa. Well-educated and having an early interest in art, he worked as a portraitist for several years before following his father into the lock making business.
Yale initially focused on improving bank safe locks. He patented an "unpickable" lock, called the "Yale Infallible Bank Lock," in A number of improved key-based bank locks followed. Yale then developed the first combination lock, eliminating the need for a key.
Next, the inventor turned his attention to general-use locks. He improved on his father's design for small key and tumbler locks, and invented the first modern cylinder lock.
In the s he created one of the first modern locks that used a pin-tumble design. The younger Yale, meanwhile, who was artistically talented, had begun serious studies in portrait painting.
Eventually he set up his own lock business in Shelburne Falls, Mass. He had become convinced that keyholes in traditional locks made the locks susceptible to thieves who could use picks, gunpowder or other explosives.
This led him to employ permanent dial and shaft designs in many of his newer locks, such as used in what most know as "combination locks" today. The design allowed its owner to change its combination and would also allow the key to secure the lock while being hidden away from the exterior of the door by a hardened steel plate, which covered the keyhole behind it. He patented the device, thereby securing his place as an authority on all matters pertaining to locks and safes.
The basic concept was used in ancient Egypt around 4, years ago, in locks that were very large up to two feet long and made out of wood.
The design has a main barrel, which is drilled so it has several—usually five or six—cylindrical slots that are set close together in a line.
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