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Well-Screen Cleaner.

Description: Patent for cleaning well screens and preventing oil well pipes from clogging to improve production.
Date: June 7, 1921
Creator: Bashara, Samuel F.
Partner: UNT Libraries Government Documents Department

Portable Electric Saw.

Description: Patent for improvement of portable electric saws that can be used "as readily and accurately as a hand saw in performing many different grades of work much more rapidly and with less physical exertion" (lines 17-20), including illustrations.
Date: June 7, 1921
Creator: Lange, David C.
Partner: UNT Libraries Government Documents Department

Trousers.

Description: Patent for altering trousers to fit all sizes. The ready made trousers are provided with extra material and openings that allow the materials to be adjusted.
Date: June 7, 1921
Creator: Reyes, Benjamin Cardenas
Partner: UNT Libraries Government Documents Department

Treatment of Crude Petroleum for Purification.

Description: Patent for the purification of crude petroleum by separating impurities such as sand and clay using a heat treatment.
Date: June 7, 1921
Creator: Bostick, Joseph Wallace & Homer, Charles H.
Partner: UNT Libraries Government Documents Department

Sorghum Cutter.

Description: Patent for a machine to cut sorghum and similar standing crops
Date: June 7, 1921
Creator: Drgac, Charles
Partner: UNT Libraries Government Documents Department

Pump.

Description: Patent for a pump plunger for oil or water that is durable and will not require replacement.
Date: June 7, 1921
Creator: Humason, Granville A.
Partner: UNT Libraries Government Documents Department

Automobile-Theft-Preventing Device

Description: Patent for an automobile theft preventing device which prevents the operation of the automobile by an unauthorized person and prevents the theft of thereof and can be controlled by the owner/authorized person permitting the operation of the automobile.
Date: June 7, 1921
Creator: Welliver, Percy
Partner: UNT Libraries Government Documents Department

Boll-Weevil-Exterminating Device.

Description: Patent for a machine that catches insects and their eggs by using beaters and a catch pan as the machine is drawn over crops. The parts are adjustable to adapt to the size of crop rows and crops.
Date: June 7, 1921
Creator: Cape, John M.
Partner: UNT Libraries Government Documents Department

Broom.

Description: Patent for a broom that has replaceable straw sections.
Date: June 7, 1921
Creator: Blasingame, Frank P.
Partner: UNT Libraries Government Documents Department

Foldable Hacksaw.

Description: Patent for a foldable hacksaw, including illustrations. The foldable hacksaw is "of rigid construction, at the same time being foldable...so that it may be readily carried in the pocket" (lines 13-16).
Date: June 7, 1921
Creator: Barner, Lawrence Dunston
Partner: UNT Libraries Government Documents Department

Rolling Windshield.

Description: Patent for an automobile attachment which protects the said automobile from adverse weather conditions. The apparatus is unique in its simple construction, practicality, and ability to "be rolled into a small compass" when not in use (lines 20-21).
Date: June 7, 1921
Creator: Gerhard, William H.
Partner: UNT Libraries Government Documents Department

Valve for Pumps.

Description: Patent of a valve used on deep well pumps; that my contain sand, shale or sediment
Date: June 7, 1921
Creator: Shevlin, Miles
Partner: UNT Libraries Government Documents Department

Lift for Gin-Breasts.

Description: Patent for safely positioning the gin breast by including a operating lever to raise, swing, or lower the breast.
Date: June 7, 1921
Creator: Pool, Charles R. P.
Partner: UNT Libraries Government Documents Department

Pipe-Engaging Slip for Rotaries

Description: Patent for improving pipe engaging rotaries, with illustrations.
Date: June 7, 1921
Creator: Livergood, Gerald R.
Partner: UNT Libraries Government Documents Department
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