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Roller-Bearing Swivel Wrench Plate.
Patent for improvements on Roller-Bearing Swivel Wrench Plates, including illustrations. The goal of this invention is to make the plates more efficient "for use with any suitable fishing tool, or bit for use in oil fields or water well drilling" (lines 12-14).
Date:
January 10, 1922
Creator:
Harralson, Charles L.
System:
The Portal to Texas History
Window Sash Construction.
Patent for a new type of window sash construction. Older sashes use putty to hold the window glass in to the frame. This sash uses metal and wood to hold the glass in making for a better seal and greater insulation.
Date:
March 10, 1914
Creator:
Harris, John I.
System:
The Portal to Texas History
Portable Weighing Appartus
Patent for portable weighing apparatus. Illustration included.
Date:
July 10, 1909
Creator:
Harrison, James H.
System:
The Portal to Texas History
Peanut Planter.
Patent for improvements to peanut-planters in order to plant peanuts without removing or crushing the hulls.
Date:
April 10, 1917
Creator:
Little, Thomas Dewitt
System:
The Portal to Texas History