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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
Oil Well Drill.
Patent for a new rotary oil drill with improvements to anchor the drill-pipe, improve oil flow, and prevent blow-outs of the drill-pipe.
Date:
July 3, 1903
Creator:
Decker, Harry R.
System:
The Portal to Texas History
Splint
Patent for an improved splint.
Date:
July 3, 1900
Creator:
Hughes, James Gilbert
System:
The Portal to Texas History