Resource Type
Counties
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
Casing Head
Patent for a Case-Head. This case-head is used in oil wells. Its purpose is to ensure a tight seal around a pipe so that gas can flow properly through the tube.
Date:
August 10, 1918
Creator:
Kinzbach, Frank
System:
The Portal to Texas History
Log-Turner
Patent for "that class of log-turners which is operated by power, and has for its object to provide a device that will be quick and positive in its operation" (lines 39-42).
Date:
May 10, 1887
Creator:
Ferris, Henry Murry & Gallon, William
System:
The Portal to Texas History