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Aircraft
Patent for Improvements to aircraft steering. The invention allows the pilot to adjust the center of mass.
Date:
April 5, 1921
Creator:
Johnson, Louis V.
System:
The Portal to Texas History
Motor-Vehicle for Traversing Marsh-Lands.
Patent for a steerable motor vehicle that can be driven in marshlands.
Date:
December 20, 1921
Creator:
Ray, Malcolm
System:
The Portal to Texas History
Fuel-Oil Burner
Patent for Fuel-Oil Burners, focusing on the advancements in construction and efficiency in comparison to its predecessors.
Date:
October 11, 1921
Creator:
Mead, William J.
System:
The Portal to Texas History
Transmission-Gearing.
Patent for an improved gear set adapted for transmitting power to the main driving wheels of farm tractors, the gear set embodying simple and efficient means of effecting a reversal of travel without any chance of gear stripping, as well as the whole transmission gearing encompassing less space.
Date:
February 15, 1921
Creator:
Blumberg, Hamilton G.
System:
The Portal to Texas History