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Patent for an invention of a valve locking device by which the fuel supply pipe can be cut off and a valve which is inserted in the said pipe locked in the cut off position.
Date:
July 15, 1919
Creator:
Melton, William C.
System:
The Portal to Texas History
Water-Elevator.
Patent for a water elevator. The invention produces a means for "high power water elevating" which provides " a steady and voluminous flow of water" (lines 20-22). Illustration included.
Date:
November 25, 1919
Creator:
Barnett, Grady L.
System:
The Portal to Texas History