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Improvement in Windmills

Description: Patent for the improvement of wind mills, that includes a detailed description as well as labeled figure drawings.
Date: May 20, 1873
Creator: Jackson, Thomas R.
Partner: UNT Libraries Government Documents Department

Improvement in Jack-Screws and Clamps Combined.

Description: Patent for an invention "to combine a jack-screw or lifting-jack with a clamp, so that they may be interchangeably used." (Lines 19-21) Includes instructions and illustrations.
Date: May 20, 1873
Creator: Jackson, Thomas R.; Jackson, Asberry C. & Watson, Claudius S.
Partner: UNT Libraries Government Documents Department