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Improvement in Scew-Propellers.
Patent for "means for guiding pivoted propeller-blades so that they can open and close readily and uniformly. It also consists in a new mode of applying a spring there-to so that the obliquity or resistance of the blades will be automatically graduated." (Lines 6-11) Includes instructions and illustrations.
Date:
February 18, 1873
Creator:
Wilson, Martin M.
System:
The Portal to Texas History
Improvement in Running-Gears for Vehicles.
Patent for vehicle running gear improvements consisting of two piece head-block, central eye, groove for king bolt, and wrought-iron brackets for parts.
Date:
February 25, 1873
Creator:
Meddows, Isaac O.
System:
The Portal to Texas History