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Walking Cultivator

Description: Patent for a walking cultivator. Illustrations included.
Date: May 30, 1911
Creator: Roper, Andrew Washington
Partner: UNT Libraries Government Documents Department

Metal Tie.

Description: Patent for a metal railroad tie.
Date: May 2, 1911
Creator: Riley, Samuel L.
Partner: UNT Libraries Government Documents Department

Automatic Switch

Description: Patent for an automatic switch for railroad tracks.
Date: May 2, 1911
Creator: Pickle, Voyl C.
Partner: UNT Libraries Government Documents Department

Automatic Oiler

Description: Patent for an automatic oiler for railroad cars.
Date: January 17, 1911
Creator: Adams, Richard Field
Partner: UNT Libraries Government Documents Department
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