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Reel

Description: Patent for an improvement in reels. The reel features improvements in how to attach the end of a film strip to the reel for winding.
Date: June 12, 1917
Creator: Allen, Harry Porter
Partner: UNT Libraries Government Documents Department

Aeroplane.

Description: Patent for improved propulsion for airplanes involving propellors in the front and rear of the plane. This aids in regulating air currents to stabilize flight, landing and speed. The patent includes illustrations.
Date: June 12, 1917
Creator: Campbell, John R.
Partner: UNT Libraries Government Documents Department
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