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3 Matching Results
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Well Drilling Apparatus.
Patent for an improved well-drilling apparatus. Improvements made to bull wheel shaft and the sand reel and casing line shaft so they may be operated independently of each other while utilizing the same source of power.
Date:
January 14, 1919
Creator:
Thorniley, Clarence W. & Thorniley, Charles, D.
System:
The Portal to Texas History
Motor Starter
Patent for a new motor starter design.
Date:
January 7, 1919
Creator:
Maha, Irwin J.
System:
The Portal to Texas History
Rifle.
Patent for a rifle that uses electricity from a battery to ignite the explosive charge for the ammunition.
Date:
January 14, 1919
Creator:
Brannon, Virgil C.
System:
The Portal to Texas History