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Improvement in Pile-Drivers.
Patent for an improved pile-driver device which automates the release of the pile-driver hammer as well as including a perpendicular device which advances the device longitudinally as the work progresses.
Date:
January 22, 1875
Creator:
McDermott, Martin
System:
The Portal to Texas History
Stirrup
Patent for a stirrup. Illustration included.
Date:
January 22, 1907
Creator:
Levy, John Victor
System:
The Portal to Texas History