Resource Type
Counties
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Improvements in Processes of Distillation and Apparatus Therefor
Patent for improvements in processes of distillation and apparatus therefor in petroleum refineries.
Date:
April 30, 1918
Creator:
Prichard, George L.
System:
The Portal to Texas History
Stump-Puller.
Patent for an improved design for a stump-puller, using a hoisting derrick and lever to attach to the stump and pull it from the ground.
Date:
April 23, 1918
Creator:
Weese, Frank
System:
The Portal to Texas History
Electrical Apparatus for Heating Stills, Boilers, and the Like.
Patent for "Improvements in Electrical Apparatus for Heating Stills, Boilers, and the like" (lines 6-8) that uses electricity and includes "a heating element which is not affected by repeated changes in temperature, which is adapted to present a heating surface of large area, which may be raised to a high temperature with a low current, and which is many times more economical in use than metal coils possessing less heat radiating powers" (lines 21-28) including illustrations.
Date:
April 9, 1918
Creator:
Lorenz, Charles O.
System:
The Portal to Texas History