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Nut-Lock.
Patent for a nut lock that has a washer divided on predetermined lines bent in a V-shaped fold line that provides attaching support. Identical sector-like portions of the nut lock have a curved edge that permit embedding in material through which a bolt is passed.
Date:
April 11, 1916
Creator:
Harding, William L.
System:
The Portal to Texas History
Necktie-Holder
Patent for improvements to necktie-holders, particularly to prevent the neck-tie from sliding down toward the lower portion of the collar.
Date:
April 21, 1921
Creator:
Potter, Arthur C.
System:
The Portal to Texas History