4 Matching Results
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Sampling Device
Patent for a machine that will remove samples from a well during drilling operations.
Date:
October 21, 1919
Creator:
Dodds, Redus D.
System:
The Portal to Texas History
Combined Plow and Harrow.
Patent for combined plows and harrows, which operates to break up the earth after it has been plowed, while the plow is opening another furrow. This invention also features the provision of a harrow attachment which can be readily applied to or removed from various types of plows.
Date:
October 21, 1913
Creator:
Rohrer, Darius B.
System:
The Portal to Texas History
Break-Out Pin.
Patent for a modified break-out pin on an oil derrick which makes it easier to release a wrench for unscrewing pipes when done, but still holds the wrench in place while in use.
Date:
October 21, 1919
Creator:
Headrick, James O.
System:
The Portal to Texas History
Carbureter-Regulating Mechanism.
Patent for improvements in carbureter-regulating mechanism by "automatically regulate the air and fuel valve of a carbureter, according to the speed of the engine and the load being carried thereby" (lines 12-15, p.1.) Illustration is included.
Date:
October 21, 1913
Creator:
Carpenter, John C.
System:
The Portal to Texas History