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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.
System:
The Portal to Texas History
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
System:
The Portal to Texas History
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.
System:
The Portal to Texas History
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.
System:
The Portal to Texas History