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The Padlock Patent Archive

Three centuries of keeping things shut

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Broken ring latch

Patent drawing showing a metal hasp with a circular broken locking ring mounted at one end, plus detailed cross-sections of the internal spring-loaded locking pin and a key-operated padlock variant.

HASP-LOCK.Byron D. West · February 19, 1884

United States patent drawings and specifications are works of the U.S. government and are in the public domain — they were never copyrighted. Download them, print them, frame them. Our commentary and descriptions are © 2026 The Padlock Patent Archive.

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