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59
Treatment of Crude Petroleum for Purification.
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.
System:
The Portal to Texas History
Sorghum Cutter.
Patent for a machine to cut sorghum and similar standing crops
Date:
December 16, 1919
Creator:
Drgac, Charles
System:
The Portal to Texas History
Structural Unit.
Patent for a structural unit for use in construction. It repurposes crushed metal containers to create a core covered by an outer shell made of cement or similar material.
Date:
June 21, 1921
Creator:
Lambert, John Raymond
System:
The Portal to Texas History
Pump.
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.
System:
The Portal to Texas History
Pump.
Patent for a pump designed to draw liquid, such as oil, from a well.
Date:
June 14, 1921
Creator:
Jones, Oceola
System:
The Portal to Texas History
Safety-Lock For Doors and the Like.
Patent for improvements in door safety locks. Adding this simple and easy to manufacture lock allows a door to be locked from the inside, making the door inaccessible to anyone on the outside.
Date:
June 21, 1921
Creator:
Kless, Herman L.
System:
The Portal to Texas History
Washing-Machine.
Patent for a washing machine that has better water pressure for washing that prevents damage to garments. The design for the washing machine also reduces production costs.
Date:
June 14, 1921
Creator:
Latham, Minnie M.
System:
The Portal to Texas History
Water-Heater.
Patent for a water heater with a two-part jacket that allows the circulation of heat and products of combustion to maximize its fuel efficiency.
Date:
June 21, 1921
Creator:
Fowles, Alfred T.
System:
The Portal to Texas History
Sign.
Patent for signs, bulletin boards and other display apparatus; the purpose of this device is that display elements may be reversed from time to time to change announcement displayed.
Date:
June 21, 1921
Creator:
Nowlin, Aubrey C.
System:
The Portal to Texas History
Portable Electric Saw.
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.
System:
The Portal to Texas History
Display-Stand.
Patent for incorporating vertical shaft in display stands for posters advertising motion pictures and merchandise, with illustrations.
Date:
June 23, 1921
Creator:
Gates, Norwood
System:
The Portal to Texas History