Joseph Bramah patented the safety lock in 1784. Bramah’s lock was considered unpickable. He also went on to create a Hydrostatic Machine, a beer-pump, the four-cock, a quill-sharpener, a working planer, and more. The Bramah Lock: A Revolutionary Design Radial (or Cylinder) Design Bramah's lock was unlike the common lever or warded locks of the…
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The Unpickable Lock
