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Construction of Railroad-Beds.

Description: Patent for a railroad-bed design that is used to support railroad tracks.
Date: August 19, 1913
Creator: Alley, William W.
Partner: UNT Libraries Government Documents Department

Automobile-Jack.

Description: Patent for an automobile jack design adapted for use in garages and by those who need to do work underneath an automobile. Illustration included.
Date: August 29, 1912
Creator: Bouldin, W. Claughton
Partner: UNT Libraries Government Documents Department

Post Hole Digger.

Description: Patent for a new post hole digger that both facilitates the creation of straight sides to the hole and a mechanism to allow for easy removal of the dirt.
Date: August 17, 1916
Creator: Armstrong, John Joshua, Sr.
Partner: UNT Libraries Government Documents Department
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