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3 Matching Results
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Grapple.
Patent for improving grapples for regaining tools, particularly those that can be hidden and submerged.
Date:
April 26, 1921
Creator:
James. C. Ginter.
System:
The Portal to Texas History
Bailer.
Patent for improved bailer for deep wells (e.g., oil wells), cheaper to use and manufacture, with a better delivery gate and improved method for triggering gate closure upon bailer withdrawal.
Date:
July 26, 1921
Creator:
Swartz, Ira
System:
The Portal to Texas History
Shaft-Support.
Patent for improvements in harnesses through the accommodation of "varying positions of the animal with respect to the shafts or thills, so as to remove all strain from and upon the shafts and the saddle, while at the same time effectively supporting the shafts and preventing the slipping of the same up and down upon the sides of the animal."
Date:
October 26, 1897
Creator:
Coleman, Thomas Gardner
System:
The Portal to Texas History