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Boat.

Description: Patent for boat with improvements towards easy movements by using a propeller and rudder. The boat is designed with the user to use their feet to manually move the boat. The boat is designed for hunting or fishing while keeping the hands free.
Date: March 8, 1921
Creator: Greer, John C.
Partner: UNT Libraries Government Documents Department

Tool Joint.

Description: Patent for a new tool joint used in rotary drilling to connect the parts of a drill stem. The tool joint is not exclusive to drill stems and may be used in other applications.
Date: March 22, 1921
Creator: Kreiter, Richard F.
Partner: UNT Libraries Government Documents Department

Roller for Cotten-Gins.

Description: Patent for an improved cotton gin roller, to separate cotton fibers from cotton seeds. Made with a hollow design to prevent the device from becoming too hot during use.
Date: March 1, 1921
Creator: Tischer, Edward R.
Partner: UNT Libraries Government Documents Department

Cable-Clamp.

Description: Patent for improved cable-clamps for oil drilling and water wells, such that the gripping member will accommodate a variety of cable sizes.
Date: March 29, 1921
Creator: Lacy, Benjamin B.
Partner: UNT Libraries Government Documents Department

Swing

Description: Patent for swing that accommodates both seated and reclining positions.
Date: March 1, 1921
Creator: Nelson, Carl N.
Partner: UNT Libraries Government Documents Department

Attachment For Internal-Combustion Motors

Description: Patent for improvements in attachments for internal- combustion motors. The invention is about new and useful improvements to a specific attachment. The two stated objectives are to provide a device adapted for application to the intake pipe on an internal combustion motor and to provide a device which may be locked in a closed position, thereby preventing theft.
Date: March 29, 1921
Creator: Thomas, James Clarence
Partner: UNT Libraries Government Documents Department

Lubricator.

Description: Patent for new and improved lubricator. The invention is connected to lubricators used in earth boring drills for deep well drilling.
Date: March 29, 1921
Creator: Scott, Floyd L.
Partner: UNT Libraries Government Documents Department
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