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Vehicle Body Suspension.

Description: Patent for swing suspension for trucks to absorb shocks sustained by the chassis.
Date: June 20, 1919
Creator: Harper, William David
Partner: UNT Libraries Government Documents Department

Tube-Expander

Description: 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
Partner: UNT Libraries Government Documents Department

Diving-Armor.

Description: 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.
Partner: UNT Libraries Government Documents Department

Separator for Secondary Batteries

Description: Patent for an improved secondary battery separator.
Date: June 3, 1919
Creator: Luthy, J. O.
Partner: UNT Libraries Government Documents Department
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