Bramah lock
Quick Summary
A Bramah lock is a type of lock invented by Joseph Bramah, an English engineer. Unlike ordinary locks where tumblers swing, a Bramah lock uses thin, flat, notched bars that move endwise, activated by the key. Bramah famously offered a reward for anyone who could pick his lock, which remained unpicked for many years. The complexity of its manufacture led Bramah and his assistant, Henry Maudslay, to develop specialized machine tools, contributing to the foundation of the British machine-tool industry.12
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