Resource Type

Angle Cock Device (open access)

Angle Cock Device

Patent for "stop cocks for controlling the flow of fluids and more particularly to what are known as angle cocks for use in train pipes of air brake and other fluid pressure systems upon railway cars" (lines 8-13) including illustrations.
Date: March 9, 1915
Creator: Ellwood, Thomas B.
System: The Portal to Texas History
Combination Measuring and Transfer Tank Pump (open access)

Combination Measuring and Transfer Tank Pump

Patent for a combination measure and transfer tank pump to be used for the transferring of oil from one container to another.
Date: March 18, 1919
Creator: Kirkwood, A. L.
System: The Portal to Texas History
Monkey-Wrench. (open access)

Monkey-Wrench.

Patent for a wrench, which can be used as a S wrench or a monkey wrench and is durable.
Date: March 22, 1910
Creator: Post, Parley C.
System: The Portal to Texas History