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Synthesis of Columnar Hydrogel Colloidal Crystals in Water-organic Solvent Mixture (open access)

Synthesis of Columnar Hydrogel Colloidal Crystals in Water-organic Solvent Mixture

Patent relating to the synthesis of columnar hydrogel colloidal crystals in a water-organic solvent mixture.
Date: September 21, 2006
Creator: Hu, Zhibing; Zhou, Jun; Cai, Tong; Tang, Shijun & Marquez, Manuel
System: The UNT Digital Library
Power Plow (open access)

Power Plow

Patent for a plow "operated by power, such as traction-engines, with which such plows may be readily connected, and which are usually so constructed as to conveniently transmit motion to the operating mechanism of the plow." (line 8-12)
Date: June 2, 1903
Creator: Parker, John L.
System: The Portal to Texas History
Washing-Machine. (open access)

Washing-Machine.

Patent for a washing machine composed of a suds box, a stationary rubber piece, and rubber rollers.
Date: April 2, 1907
Creator: Thompson, Henry E.
System: The Portal to Texas History
Disk Plow (open access)

Disk Plow

Patent for disk plow. Illustration included.
Date: April 2, 1907
Creator: Leuty, Clyde Clifford
System: The Portal to Texas History
Cultivator-Standard (open access)

Cultivator-Standard

Patent for a cultivator standard which allows the pitch and angle of the cultivator to be adjusted.
Date: July 2, 1912
Creator: Yeatts, Edward D.
System: The Portal to Texas History