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Improvement in Cultivators.
Patent for a new and useful improvement in cultivators.
Date:
February 5, 1878
Creator:
Graves, Jefferson M.
System:
The Portal to Texas History
Improvement in Safety-Guards for Cars.
Patent for "certain new and useful Improvements in Safety-Guards for Cars" (lines 5-6) intended to pervent derailment of railway cars, including a detailed explanation and description of the illustration.
Date:
February 5, 1878
Creator:
Harding, John W. & Towell, Issac
System:
The Portal to Texas History
Improvement in Rotary Engines.
Patent for Improvement in Rotary Engines concerning "the arms of the frame" (lines 9), which are powered by steam and "steam valves with arms" (line 17) including a detailed explanation and description of the illustration.
Date:
February 5, 1878
Creator:
Evens, George
System:
The Portal to Texas History