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101 Matching Results
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97 - 101 of
101
Improvement in Planters, Cultivators, and Stalk-Choppers.
Patent for a combined planter, cultivator, and chopper.
Date:
May 12, 1874
Creator:
McCaleb, John L.
System:
The Portal to Texas History
Pneumatic Tire.
Patent for improved pneumatic tires for motor vehicles that will prevent deflation when punctured.
Date:
May 31, 1921
Creator:
Williams, Harry S.
System:
The Portal to Texas History
Gradometer.
Patent for a gradometer "which will accurately indicate under the most varying and unstable conditions the inclination and declination at which any moving body is traveling" (lines 10-13). The gradometer is "particularly adapted for use on motor vehicles" (lines 15-16).
Date:
May 17, 1921
Creator:
Hall, Sidney Wilson
System:
The Portal to Texas History
Construction of the Hulls of Concrete Ships.
Patent for "new and useful improvements in Construction of the Hulls of Concrete Ships" (lines 5-6). The improvements enable concrete hulls to be made efficiently, comparatively lightweight, and durable with a new form of rib reinforcement providing strength to withstand all strains of ocean travel.
Date:
May 13, 1919
Creator:
Holmgreen, Julius H.
System:
The Portal to Texas History
Cooling Device for Lard-Compounding Machines
Patent for a machine that spreads melted lard into thin sheets and freezes it. Illustrations included.
Date:
May 26, 1908
Creator:
Wright, Robert L.
System:
The Portal to Texas History