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Well-Boring Apparatus

Description: Patent for a well-boring apparatus that has a rotary drill pipe.
Date: November 12, 1912
Creator: Norris, Joseph B.
Partner: UNT Libraries Government Documents Department

Sash Control

Description: Patent for a window sash control system. This mechanism allows the user to open a hard to reach window, such as one at the top of a stairwell, remotely via a series of ropes and pulleys.
Date: June 12, 1917
Creator: Coogle, John David
Partner: UNT Libraries Government Documents Department
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