Nut-Lock.
Description:
Patent for a nut-lock that is meant to be screwed onto a bolt, threaded shaft, axle spindle, or other similar screws. The nut has an improved construction and a lock that consists of a tiny pin that must be pulled out before the nut can be unscrewed.
Date:
September 19, 1893
Creator:
Stewart, William Mills
Partner:
UNT Libraries Government Documents Department