Sample-Taking Device. (open access)

Sample-Taking Device.

Patent for improvements in Sample-Taking Devices, specially for drilling oil wells with the purpose of taking samples, which can be easily removed from the well without with-drawing the bit or drill stem.
Date: June 8, 1920
Creator: Huston, Sidney H.
System: The Portal to Texas History
Screening Device for Oil-Wells. (open access)

Screening Device for Oil-Wells.

Patent for improvements in a screening device for oil wells that is specially made for wells constructed in places of strong gas pressure.
Date: June 8, 1920
Creator: Houston, Sidney H.
System: The Portal to Texas History
Rotary Valve Mechanism. (open access)

Rotary Valve Mechanism.

Patent for a rotary valve mechanism that regulates an internal combustion engine's intake of charge and release of exhaust.
Date: June 8, 1915
Creator: Harpst, Frederick E.
System: The Portal to Texas History
Improved Anchor for Animals. (open access)

Improved Anchor for Animals.

Patent for improvement in animals’ anchor in which it allow the animals to graze without being twisted or wound up the rope by using the combination of a swiveled loop and a pivoted loop with each other, and a pin. “This pin is made with four wings, or radial longitudinal flanges, tapering to a point at its lower end and is readily forced into the ground, and easily drawn out, but will resist a very strong side-draught.” (Lines23-27) Illustration is included.
Date: June 8, 1869
Creator: Raiford, P. H.
System: The Portal to Texas History