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Automatic Switch

Description: Patent for an automatic switch for street railways.
Date: November 30, 1909
Creator: Godoy, Jose Ma
Partner: UNT Libraries Government Documents Department

Clinical Thermometer.

Description: Patent for a new and improved thermometer. This design has "[u]pon the body of the instrument a scale, preferably equivalent to the centigrade . . . in which the zero-sign is placed at the normal temperature of the body, each degree being divided into five or ten parts according to the size of the instrument and reading supernormal and subnormal degrees" (lines 20-26).
Date: June 11, 1889
Creator: Hunstock, Robert H. & Chávez, Emigdio
Partner: UNT Libraries Government Documents Department

Dumping-Car.

Description: Patent for a dumping car in "which contents of the car may be readily discharged" (lines 11-12) including illustrations.
Date: December 3, 1889
Creator: Bogusch, Gustav & Zincke, August
Partner: UNT Libraries Government Documents Department

Extensible Trestle.

Description: Patent for an improvement to extensible trestles for masonry and carpentryscaffolding and other uses, including both instructions and illustrations.
Date: January 7, 1890
Creator: Bogusch, Robert J.; Bogusch, Gustav & Zincke, August
Partner: UNT Libraries Government Documents Department

Flue-Cutter

Description: Patent for a flue cutter with a pair of pivoted arms, which can be detached, and a cutter-head.
Date: January 14, 1890
Creator: Bogusch, Robert J.; Zincke, August & Bogusch, Gustav
Partner: UNT Libraries Government Documents Department