Resource Type
Counties
7 Matching Results
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7
Automatic Signal-Actuating Mechanism for Railways
Patent for an improved signal actuating mechanisms for railways. When the train cars reach an operating mechanism, a flag will be raised where pedestrians or cars cross, and cause a signal to be repeated until the train passes.
Date:
July 20, 1920
Creator:
Bashara, Samuel Farris
System:
The Portal to Texas History
Spear
Patent for a spear that is used to help withdraw or remove pipes that may get stuck in wellbores.
Date:
April 20, 1920
Creator:
Gray, Ellsworth
System:
The Portal to Texas History
Pump
Patent for an improvement to pumps. This pump is designed to facilitate pumping of materials from deep oil and water wells.
Date:
March 20, 1920
Creator:
Hunt, David
System:
The Portal to Texas History
Plunger For Deep-Well Pumps
Patent for improved deep well pumps with plungers used to reduce wear and lower the amount of repairs needed
Date:
April 20, 1920
Creator:
Coulson, William J.
System:
The Portal to Texas History
Pneumatic Tire.
Patent for improvements in tires for vehicles that has a cushion that takes the shocks of travel.
Date:
July 20, 1920
Creator:
Drouet, Charles
System:
The Portal to Texas History
Elevator.
Patent for an elevator used to lift pipe and other similar objects, the invention is designed to help drilling operations for oil wells.
Date:
January 20, 1920
Creator:
Steen, Buford J.
System:
The Portal to Texas History
Signal.
Patent for a signal to be placed on the fender of a motor vehicle to indicate to other drivers the intended direction the vehicle is going.
Date:
July 20, 1920
Creator:
Cochran, Carl T.
System:
The Portal to Texas History