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Spading-Machine.
Patent for a spading-machine that "can be propelled by any mechanism desired and which has soil engaging devices mounted in a novel manner whereby, as the machine is moved forwardly, said devices will be forced downwardly into the soil and then lifted upwardly so as to lift or break the soil." (lines 11-17) including instructions and illustrations.
Date:
August 28, 1917
Creator:
Robinson, David M.
System:
The Portal to Texas History
Armor Unit for Gunners
Patent for armor that can be mounted on gunners units..
Date:
November 28, 1916
Creator:
Spence, John J.
System:
The Portal to Texas History