Assertion: padlock | /r/HasAspect | shackle
Facets:
Source sentences:
text: In 1877 Yale & Towne was granted a patent for a padlock that housed a stack of levers and had a shackle that swung away when unlocked.
text: Some newer padlocks have hardened boron alloy shackles or shrouded (hidden or covered) shackles to make them more difficult to cut.