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DERAILER (open access)

DERAILER

This is a patent for a railway Derailer. This new derailer is less expensive, easier to manufacture, and will be an improvement over older models. For example, it is easier to attach to the rail track and more efficient at stopping railroad collisions.
Date: April 22, 1919
Creator: Gravis, James. C
System: The Portal to Texas History
Rear Sight for Guns (open access)

Rear Sight for Guns

Patent for a rear sight for firearms, particularly larger firearms such as service rifles or other field artillery and machine guns.
Date: November 18, 1919
Creator: Kaempfer, Effie May Wagner
System: The Portal to Texas History
Torpedo-Controlling Apparatus. (open access)

Torpedo-Controlling Apparatus.

Patent for improvements to a torpedo controlling apparatus. Electrically operated wings or vanes are added to the exterior of the torpedo, allowing remote control from within an airplane. The position and angle of the wings or vanes affect the depth of the submerging operation.
Date: August 12, 1919
Creator: Longoria, Nicholas
System: The Portal to Texas History