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Oil Trap

Description: Patent for improvements to floating oil traps. Floating oil traps are used to catch excess oil floating on top of refinery discharge canals. These improvements include increased flexibility, thus allowing the trap to move with the flow of the water.
Date: November 22, 1921
Creator: Jones, Robert P.
Partner: UNT Libraries Government Documents Department

Dredge.

Description: Patent for an excavating machine specifically designed for canal digging, that "is an improvement upon a patent granted to Charles S. Butterfield, March 13, 197 and numbered 1,219,371" (lines 10-13). This invention provides a means for firm and stable support of the excavating machine and allows the position of the machine to be easily changed as the work progresses.
Date: November 22, 1921
Creator: Evans, Marvin
Partner: UNT Libraries Government Documents Department

Spring Wheel.

Description: Patent for the improvement of spring wheels. It is to prevent the movement of a car's rim or hub when sharp turns are being made.
Date: November 22, 1921
Creator: Livings, James Arthur
Partner: UNT Libraries Government Documents Department

Stock Feeder

Description: Patent for stock feeder, for automatically feeding grain (or mill food) to stock (particularly hogs) with feeding troughs on opposite sides of oscillating storage hopper.
Date: November 22, 1921
Creator: Dierks, John
Partner: UNT Libraries Government Documents Department

Agricultural Machine

Description: Patent for a tool to destroy weeds. This invention reuses several parts from farming tools.
Date: November 22, 1921
Creator: Northcutt, John G. & Crawford, Miner
Partner: UNT Libraries Government Documents Department

Process for Converting Sodium Sulfate to Sodium Sulfid.

Description: Patent for converting sodium sulfate to sodium sulfid, it is a process conversion of chemical compounds sodium sulfate to sodium sulfid.
Date: November 22, 1921
Creator: Anderson, Robert James
Partner: UNT Libraries Government Documents Department

Fertilizer and Method of Producing the Same.

Description: Patent for a new and improved condensed fertilizer formula that can be easily transported and is stable enough to be stored without appreciable deterioration, resulting in cost savings.
Date: November 22, 1921
Creator: Poynor, Camp, L.
Partner: UNT Libraries Government Documents Department
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