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8 Matching Results
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Boring and Threading Tool.
Patent for an inexpensive, efficient boring and threading tool that "will enable a smooth and even surface to be produced with a minimum of skill on the part of the operator" (lines 18-21).
Date:
June 21, 1921
Creator:
Wells, Daniel Doolittle
System:
The Portal to Texas History
Measure for Oil-Wells.
Patent for a device measuring the depth of oil and other wells by computing the distance preferably by the sand line or other line as it is let down from the earth's surface to the bottom of the well.
Date:
May 21, 1918
Creator:
Richardson, Robert B.
System:
The Portal to Texas History
Support for Telegraph Line-Wires and the Like.
Patent for "supports for telegraph and telephone line wires, electric light line wires, and the like, and the object is to provide simple and highly efficient brackets for holding such wires securely in place ... so that the wires will not drop to the ground" (lines 10-18), including instructions and illustrations.
Date:
May 21, 1918
Creator:
Wilson, James F.
System:
The Portal to Texas History
Automatic Device for Cutting Off the Flow of Ait Through Oil-Pipes
Patent for a device which automatically terminates air flow through an oil pipe by means of a float which travels within the oil pipe.
Date:
March 21, 1916
Creator:
Tucker, Thomas A.
System:
The Portal to Texas History
Pipe-Tongs.
Patent for "a new and useful improvement in pipe-tongs" (lines 5-6) including illustrations and instructions.
Date:
July 12, 1913
Creator:
Meredith, John De Witt
System:
The Portal to Texas History
Wrench for Rotary Well-Drills.
Patent for a wrench designed to assist in working with rotary well drills. The wrench is adapted for unscrewing the coupling that attaches a drill point to a pipe section, as well as for detaching the pipe sections from one another. The advantage of the wrench is in allowing convenient detachment of the parts of a well drill quickly and efficiently.
Date:
October 21, 1913
Creator:
Lebus, George Franklin
System:
The Portal to Texas History
Cultivator
Patent for improvements to cultivators.
Date:
May 21, 1901
Creator:
Skeen, Virgil G.
System:
The Portal to Texas History
Adding-Machine.
Patent for an inexpensive, simple, easily operated, and improved registering machine that is meant to add numbers without mistakes. It uses revoluble number wheels and a spring-returned shaft among other materials.
Date:
March 21, 1893
Creator:
Brooks, Augustus J.
System:
The Portal to Texas History