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Well-Screen.

Description: Patent for a well-screen formed of perforated pipes for oil production to filter sand and detritus, including illustrations.
Date: June 3, 1919
Creator: Mack, James O.
Partner: UNT Libraries Government Documents Department

Machine For Forming Cotton-Seed Meal Into Cakes.

Description: Patent for "an organized machine adapted to compress charges of cotton-seed meal into cakes of sufficient solidity to bear handling and removing to the press which expresses the oil from the meal, and to carry said cakes from the point where they are compressed to a point or points in convenient proximity to the press or presses which express the meal" (lines 8-16).
Date: June 3, 1890
Creator: Price, James S.
Partner: UNT Libraries Government Documents Department

Washer for Well Screens.

Description: Patent for improvements in a washer for well screens relating to oil wells, using a fluid conducting tube, to be let down in a well.
Date: June 3, 1919
Creator: Mack, James O.
Partner: UNT Libraries Government Documents Department
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