Date: October 12, 1897
Creator: Sidwell, Aaron M., Jr.
Description: Patent for "a new and improved automatic blast-generator designed for the use of jewelers, dentists, and other persons, and arranged to produce a steady and uniform blast and to permit of increasing or decreasing the force of the blast as required, according to the nature of the work on hand." (Lines 9-16) Includes instructions and illustrations.
Contributing Partner: UNT Libraries Government Documents Department