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3 Matching Results
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Line-Shaft Oiler
Patent for improvements to line-shaft oilers to more easily oil bearings and prevent oil waste.
Date:
April 2, 1918
Creator:
Collins, Joseph P.
System:
The Portal to Texas History
Flap-Valve
Patent for a flap valve for use in blowing engines that increases the life of the valve plates.
Date:
April 2, 1912
Creator:
Scott, Clarence N.
System:
The Portal to Texas History
Single Trigger Mechanism For Double-Barrel Guns
Patent for "new and useful improvement in Single Trigger Mechanism For Double-Barrel Guns (lines 5-7)."
Date:
April 2, 1918
Creator:
Lindsay, Charles W.
System:
The Portal to Texas History