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2. Pin tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Pin_tumbler_lock

   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.

3. Linus Yale Jr. - Wikipedia

   en.wikipedia.org/wiki/Linus_Yale_Jr.

   Possessing admirable skills in mechanics and lock making, Yale created one of the first modern locks that used a pin-tumbler design. The pin-tumbler design is also known as the cylinder design, and plays significant roles in today's locks and safes. Yale had previously harbored the practical implementation of the tumbler lock for decades, and ...

4. Tubular pin tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Tubular_pin_tumbler_lock

   A tubular lock and key. A tubular pin tumbler lock, also known as a circle pin tumbler lock, radial lock, or the trademark Ace lock popularized by manufacturer Chicago Lock Company since 1933, is a variety of pin tumbler lock in which a number of pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.

5. Yale (company) - Wikipedia

   en.wikipedia.org/wiki/Yale_(company)

   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 ...

6. Locksmithing - Wikipedia

   en.wikipedia.org/wiki/Locksmithing

   Harry Soref founded the Master Lock Company in 1921 and patented an improved padlock in 1924 with a patent lock casing constructed out of laminated steel. Linus Yale Sr. invented a pin tumbler lock in 1848. 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 ...

7. Linus Yale Sr. - Wikipedia

   en.wikipedia.org/wiki/Linus_Yale_Sr.

   Linus Yale Born (1797-04-27) April 27, 1797 Middletown, Connecticut, U.S. Died August 8, 1858 (1858-08-08) (aged 61) Newport, New York, U.S. Resting place Newport Cemetery, Newport, Herkimer County, New York, U.S. Occupation(s) Businessman, inventor, metalsmith, politician Known for Multiple patents including pin tumbler locks. Father of Linus Yale Jr Children Linus Yale Jr. Relatives John B ...