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Traction-Engine.
Patent for a traction engine with less weight for better fuel economy and power.
Date:
May 13, 1913
Creator:
McGruder Cox, Oscar
System:
The Portal to Texas History
Clutch and Transmission Device.
Patent for a clutch and transmission device for automobiles that "is simple, compact and inexpensive in construction, and which is thoroughly practical, reliable and efficient in use." (lines 31-33), including illustrations.
Date:
May 29, 1917
Creator:
Hubbard, Adra M. & Hubbard, Oscar M.
System:
The Portal to Texas History
Horse-Detacher.
Patent for an improved and less complicated horse-detacher featuring a new type of double tree, swingle tree, and breast yoke.
Date:
May 26, 1914
Creator:
Cummons, Clarence B.
System:
The Portal to Texas History