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Propelling Device for Aerial Ships

Description: Patent for a propelling device for aerial ships which operates by forcing air through a tube, creating suction and exerting propulsion. Illustrations included.
Date: September 8, 1908
Creator: Wolf, Davis Levi
Partner: UNT Libraries Government Documents Department

Rotary Engine

Description: Patent for "a new and improved rotary engine which is simple and durable in construction, very effective in operation, and arranged to utilize the motive agent to the fullest advantage, and to permit of convenient and quick reversing whenever desired" (lines 9-15).
Date: September 3, 1901
Creator: Hestand, Hardy & Matthews, Arthur R.
Partner: UNT Libraries Government Documents Department

Feed-Cutter

Description: Patent for a improvement for cutter.
Date: September 11, 1906
Creator: Wolf, Davis L.
Partner: UNT Libraries Government Documents Department
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