Resource Type
Counties
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Water-Level.
Patent for an instrument to determine a level at widely distant points or determining inclinations and which may be correctly read under conditions where a level cannot be held erect. Also known as hydrostatic leveling, this instrument is comprised of flexibly connected liquid containers that are spaced apart at certain distances.
Date:
August 17, 1920
Creator:
Kaspar, John & Beran, Rud F.
System:
The Portal to Texas History
Plow.
Patent for an improvement to plows that allows adjustments to be made to them both vertically and angularly.
Date:
July 30, 1920
Creator:
Zebranek, Joseph
System:
The Portal to Texas History
Plow.
Patent for improvements in plows that will break and bed the soil at a single operation while it was customary for a plow to have to go over the soil at least twice in order to break the soil. This invention is also meant to conserve time and labor and cultivate the soil more thoroughly.
Date:
June 8, 1920
Creator:
Wendtland, William Sr.
System:
The Portal to Texas History