UNT Libraries Government Documents Department - 4 Matching Results

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Cotton-Bur Separator.

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.

Device For Cleaning Electrodes Of Make-And-Break Spark-Plugs.

Patent for improvements in cleaning the electrodes of make and break spark plugs, with an illustration and explanation.

Date: August 6, 1918

Creator: Irwin, H. G.

Vacuum-Energized Make-and-Break Spark-Plug.

Patent for a vacuum-energized make-and-break spark plug that "relates to new and useful improvements in ignition apparatus for internal combustion engines" (lines 16-18) including instructions and illustrations.

Date: June 4, 1918

Creator: Irwin, Herbert Glen

Vacuum-Operated Make-And-Break Spark Plug

Patent for an improved "vacuum operated make and break spark plug" (lines 16-17) including illustrations.

Date: November 19, 1918

Creator: Irwin, Herbert G.