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Internal-Combustion Engine

Description: Patent for an improved internal combustion engine. Among the improvements, it allows "compounding the expansion effect to obtain the highest possible efficiency." ( lines 11-13)
Date: January 16, 1912
Creator: Pearson, Samuel
Partner: UNT Libraries Government Documents Department

Film Developing, Fixing, and Washing Apparatus

Description: Patent for a film developing, fixing, and washing apparatus with an improved method of rolling the film around the coil in the washing tank.
Date: July 2, 1912
Creator: Nyc, Frederick Francis
Partner: UNT Libraries Government Documents Department
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