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Roof-Jack
Patent for a roof jack that will hold up scaffolding.
Date:
February 25, 1913
Creator:
Darnall, Benjamin P.
System:
The Portal to Texas History
Dumping-Cart
Patent for a dumping cart with a body that locks to the frame, but can be released quickly to dump materials via two toggle arms connected to a crank handle. Including illustrations and instructions.
Date:
February 25, 1903
Creator:
Davis, Frank C.
System:
The Portal to Texas History