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Well Boring Apparatus.
Patent for a well-boring apparatus, an invention of a drilling apparatus using a form of power to transmit rotary movement to the string of a pipe. This invention is designed to lock the rotary elements against movement when the drill or pipe is moved or adjusted within its support.
Date:
November 29, 1921
Creator:
Boykin, Burwell, Jr.
System:
The Portal to Texas History
Float-Controlled Liquid-Gaging and Cut-Off Means.
Patent for an automatic cut off device for oil tanks that indicates the amount of water in an oil tank and will automatically close the discharge opening when all the water has been discarded from the tank.
Date:
June 29, 1920
Creator:
Waldrep, Granville J.
System:
The Portal to Texas History