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Diving-Armor.
Patent for "certain new and useful Improvements in Diving-Armor" (lines 5-6) relating to protection from high pressure, enabling arm and hand movements, an outside air supply, and an oxygen tank. Includes illustrations.
Date:
June 3, 1919
Creator:
Long, James F.
System:
The Portal to Texas History
Separator for Secondary Batteries
Patent for an improved secondary battery separator.
Date:
June 3, 1919
Creator:
Luthy, J. O.
System:
The Portal to Texas History
Tube-Expander
Patent for a tube expander for setting boiler tubes in the holes in the tube-sheet, which provides simplicity and improvement of its construction.
Date:
June 17, 1919
Creator:
Walsh, Emmet
System:
The Portal to Texas History
Vehicle Body Suspension.
Patent for swing suspension for trucks to absorb shocks sustained by the chassis.
Date:
June 20, 1919
Creator:
Harper, William David
System:
The Portal to Texas History