History Of Pin And Tumble Cam Locks

The history of pin and tumble locks can be traced back to ancient Egypt, around 2000 BC. At that time, people mounted a wooden post on the door, with a horizontal bolt positioned above the post. The bolt had a series of raised and lowered points, which held a locking spring. Using a specific key, the spring was pushed upward, unlocking the bolt.

 

In 1848, Linus Yale, Sr., invented and patented the cylindrical pin and tumble lock. His son, Linus Yale, Jr., improved upon it and received a new patent in 1861. The structure of Linus Yale, Jr.'s invention is very similar to today's pin and tumble locks. Older, high-security locks required keys weighing up to two pounds, but thanks to this series of inventions, the weight of high-security lock keys has been reduced to just a few dozen grams, laying the foundation for modern mechanical security.

 

Despite numerous subsequent challenges faced by locksmiths, the pin tumbler lock's principle remains highly valued, with companies in the United States, Northern Europe, and Israel continually developing new pin tumbler locks to thwart locksmiths. Even large modern lock companies have built global businesses based solely on the founder's invention of a novel pin tumbler lock principle, demonstrating the potential market size of pin tumbler locks.