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in creator/contributor: "Irwin, Samuel D."  
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Vacuum-Distributer for Internal-Combustion Engines.

Description: Patent for "improvements in Vacuum-Distributers for Internal-Combustion Engines". More precisely "an improvement in 'vacuum-energized make-and-break spark-plug". This particular vacuum-distributer would aid in lubricating the working parts and a "breather" function would let outside air pass through, preventing the "ingress of dirt and impurities to the vacuum-distributer".
Date: March 18, 1919
Creator: Irwin, Samuel D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Cultivator.

Description: Patent for a new and improved rotary cultivator designed to pulverize hard, dry soil without damaging the plants. The device utilizes cylindrical tooth holder with teeth that can be manipulated at various angles to pry the soil from around the plants.
Date: November 18, 1919
Creator: Irwin, Samuel D. & Irwin, Herbert G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cotton Bur Breaker and Suction Fan.

Description: Patent for "a new and useful Improvements in Cotton-Bur Breakers and Suction-Fans" (lines 6-8) and is designed for loading and unloading cotton from a wagon while separating the cotton lint from the hulls, including illustrations.
Date: November 18, 1919
Creator: Irwin, Samuel D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cotton-Bur Separator.

Description: Patent for improvements in apparatus for separating burs from cotton lint despite severe weather conditions, illustrations included.
Date: August 20, 1918
Creator: Irwin, Samuel D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Battery-Mud-Extracting Device.

Description: Patent for improvement of Battery-Mud-Extracting Devices where the mud may be removed without disassembling the battery or displacing of the electrode plates.
Date: March 11, 1919
Creator: Irwin, Samuel D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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