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Boiler Feeder and Indicator

Description: Patent for an improvement automatic steam-boiler feeders which controls the feed pump and actuates an alarm whistle (lines 21-23).
Date: November 8, 1892
Creator: Newman, Prentice A.
Partner: UNT Libraries Government Documents Department

Gear-Wheel.

Description: Patent for the construction of a wheel and gear rim that converts any ordinary vehicle wheel into a gear wheel.
Date: June 8, 1915
Creator: Biela, Valentine
Partner: UNT Libraries Government Documents Department
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