Nut Lock.
Description:
Patent for a new and improved nut lock. This design has, "[i]n combination with a bolt having a cylindrical stem and a head beveled on its inner face, a nut tapped to receive the threaded end of the bolt and prevented from turning" (lines 73-77).
Date:
January 31, 1888
Creator:
Anderson, Lee
Partner:
UNT Libraries Government Documents Department