Skip to content

The Padlock Patent Archive

Three centuries of keeping things shut

Browse Dates Inventors Types About

Willenhall lock

Patent drawing sheets showing a padlock with a round hinged shackle, internal bolt and lever tumbler mechanism, and a key inserted into the case, with multiple cross-sectional and detail views labeled with reference letters.

PADLOCKDavid Waine and Isaac Waine · April 10, 1888

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.

About · Terms · Privacy · Corrections welcome — this archive gets better when collectors write in.