Resource Type

Governor for Explosive-Engines. (open access)

Governor for Explosive-Engines.

Patent for a governor for explosive engines for use in trains, which will increase the fuel efficiency of the engines.
Date: April 27, 1909
Creator: Mayo, William C. & Houlehan, John
System: The Portal to Texas History
Speed-Changing Gear. (open access)

Speed-Changing Gear.

Patent for an automatic speed changing gear for trains.
Date: October 27, 1908
Creator: Mayo, William C. & Houlehan, John
System: The Portal to Texas History