Automobile Torpedo (open access)

Automobile Torpedo

Patent for a submarine torpedo which explodes in the hull of a vessels it hits.
Date: July 18, 1911
Creator: Douglas, William M.
System: The Portal to Texas History
Combined Ruler and Blotter (open access)

Combined Ruler and Blotter

Patent for a ruler that can also be used as a blotter. Illustrations included.
Date: July 25, 1911
Creator: Muller, Frederick William, Jr.
System: The Portal to Texas History
Trap. (open access)

Trap.

Patent for a fishing trap box that holds the bait securely and can be used for catching fish or crustaceans.
Date: July 4, 1911
Creator: Franklin, Robert M.
System: The Portal to Texas History