UNLOCKING THE PAST
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The Charm And History Of Antique Push-Key Pancake Padlocks The 18th and 19th centuries America changed the world when it cam to locking devices. The most notorious Linus Yale, inventor of the pin-tumbler lock in 1848. His son improved on the lock, Linus Yale Jr. A mchanical engineer and lock manufacturer who patented a cylinder pin-tumbler lock, and went on to invent the modern combination lock in 1862. Pancake padlocks, push key padlocks, antique railroad locks are not just for function though. The intricate details, t The principle started with a patented on an "unpickable" lock called the "Yale Infallible Bank Lock," in 1855. The patent that changed the world was eventually invented by Linus Yale. Using the locking principle based on a push key. When key is inserted the six ( 4, 6, 7) independent levers move to line up each gate allowing the internal latch to engage and the shackle pops open away from the body of the lock. The sha