Resource Type
States
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Lifting Clamp for Well Casings
Patent for a lifting clamp for well casings. It is designed to make the lifting of well casings easier and safer for those attaching the clamp to the lifting mechanism.
Date:
July 3, 1917
Creator:
Kibele, Eugene
System:
The Portal to Texas History
Hoisting Drum.
Patent for an invention that "relates to improvements in hoisting drums" (line 15-16). Structure, objective, and illustrations of hoisting drums are included.
Date:
July 3, 1917
Creator:
Howard, Henry Fischer
System:
The Portal to Texas History
Rail-Splice.
Patent for a rail splice that joins the ends of railway tracks to one another to prevent spreading of the tracks and is easily taken on and off for repair work.
Date:
July 16, 1907
Creator:
Bonner, Benjamin B. & Bonner, Thomas W.
System:
The Portal to Texas History