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Mechanical Device for Concentrating Vision.
Patent for an optical device proposed to replace lenses and goggles. Instead of lenses, this device has circular shutters (much like a camera) that forces direct vision and eliminates peripheral vision for concentration and focus.
Date:
August 19, 1919
Creator:
Compere, Dolphus E.
System:
The Portal to Texas History
Separating and Grading Machine
Patent for a separating and grading machine that separates foreign matter from produce such as peanuts, and also the produce are cleaned and at the same time graded for the market.
Date:
February 19, 1919
Creator:
Sparks, James N.
System:
The Portal to Texas History