Assertion: hinge's design | /r/CapableOf | use the pull of gravity
Facets:
value: to close the hinges
type: PURPOSE
Source sentences:
text: There are a number of variations on the self-closing design, including designs which use the pull of gravity to close the hinges, but all of them are designed to work through the lifetime of the furniture without failing, as long as they are periodically oiled to keep the spring and hinge free moving.