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Adjustable Split Lock-Nut or Union
Patent for an adjustable split cock-nut or union that is of a simple, cheap, and efficient construction with an intended use on valve rods of internal combustion engines. This device is designed to withstand direct pressure, blows, and torque forces.
Date:
December 2, 1919
Creator:
Dickinson, Harry E.
System:
The Portal to Texas History
Improvement in Adjustable Hats.
Patent for a mechanism improving the ability to adjust the shape of a hat to fit different sized heads. The patent is for an "adjustable attachment for enlarging and contracting" the hat's design.
Date:
August 30, 1873
Creator:
Cassiano, Ygnacio I.
System:
The Portal to Texas History
Improvement in Windmills.
Patent for an improved windmill, including illustrations, consisting of an arrangement of "three stationary sails between arms on central shaft, so as to obtain double or increased power from the air passing through the wheel." (lines 7-10)
Date:
December 2, 1879
Creator:
Dewees, Thomas
System:
The Portal to Texas History