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Casing Spear
Patent for casing spears. This invention is designed for pulling well tubes or casings that have broken off out of the well. Illustration included.
Date:
August 25, 1908
Creator:
Carroll, Monroe W. & Johnston, H. G.
Object Type:
Patent
System:
The Portal to Texas History
Bearing for Driving and Other Shafts.
Patent for a bearing or other driving shafts which can be easily removed without harming the rest of the machine. Illustration is included.
Date:
March 31, 1908
Creator:
Wiggs, James A., Jr.
Object Type:
Patent
System:
The Portal to Texas History