UNT Libraries Government Documents Department - 5 Matching Results

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Engine Valve Mechanism: Patent for an engine valve mechanism. This invention is a "class of steam engines wherein the cylinder-inlet and exhaust-ports are controlled by separate and distinct values." Illustration included.
Hydraulic Swivel: Patent for a hydraulic swivel. Illustrations included.
Plunger.: Patent for a plunger for water and oil wells, which will withstand heavy use.
Screw-Gearing: Patent for screw-gearing for motors, particularly motors for fans or similar objects, including illustrations.
Well Pumping Apparatus: Patent for well pumping apparatus. This invention is designed for the improvement of pumping liquid from deep wells. Illustration included.