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The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.
Linus Yale Jr. improved upon his father's lock in 1861, using a smaller, flat key with serrated edges that is the basis of modern pin-tumbler locks. Yale Jr. developed the modern combination lock in 1862. Alfred Charles Hobbs demonstrated the inadequacy of several respected locks of the time in 1851 at The Great Exhibition, and popularized the ...
Initially known as Yale Lock Manufacturing Co., the company later adopted the name Yale & Towne, with its base in Newport, New York. [ 3 ] Between 1843 and 1857, Yale secured eight patents , encompassing items like the pin tumbler safe lock, safe lock, bank lock, vault, safe door bolt, and padlock, registered with the U.S. Patent and Trademark ...
Yale's father, Linus Yale Sr., opened a lock shop in the 1840s in Newport, New York, specializing in bank locks; he was a successful inventor who specialized in expensive, handmade bank locks and mechanical engineering, and who held eight patents for locks and another half dozen for threshing machines, sawmill head blocks, and millstone dressers.
First plant of the Yale Lock Manufacturing Company, started by Linus Yale Jr. and Henry R. Towne Old Yale Lock Shop, Newport, New York, first location of Linus Sr.'s bank lock shop. Linus Yale (April 27, 1797 – August 8, 1858) was an American businessman, inventor, metalsmith, and politician. He was a founder of Lamson, Goodnow, and Yale, an ...
A square, rounded or V-shaped depression, filed or machined into a key, to allow the key to turn in its lock. In pin tumbler locks, the series of key cuts on a key causes the pins to line up at the shear line or gate so the lock will open. In warded locks, the key cuts bypass the wards so the key can push or pull the bolt. [6] Key pin
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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.