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Traction-Engine.
Patent for traction engines used in farms that will make it easier to construct, make it less heavy, and cheaper to build.
Date:
August 8, 1916
Creator:
Roberts, Adrian J. & Wright, Wayne C., Sr.
System:
The Portal to Texas History
Method of Repairing Aluminum Castings.
Patent for a new method of repairing fractured aluminum casts that involves welding the metal against a composite pate, includes illustrations.
Date:
July 8, 1919
Creator:
Irwin, Samuel D.
System:
The Portal to Texas History