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Spirit Level.

Description: Patent for a spirit-level by Allan T. Gibson. Meant for helping users obtain level and perpendicular lines with more ease and accuracy, as well as for determining any intermediate angle.
Date: June 26, 1906
Creator: GIbson, Allen T.
Partner: UNT Libraries Government Documents Department

Branding-Iron

Description: Patent for a branding iron that expends less fuel than similar brands due to its combustion chamber that is able to better concentrate its heat towards the applied surface.
Date: December 26, 1911
Creator: Thurman, Lee Onadus
Partner: UNT Libraries Government Documents Department

Automatic Fire-Escape.

Description: Patent for "new and useful Improvements in Automatic Fire-Escapes" (lines 5-6), including instructions and illustrations.
Date: August 26, 1913
Creator: Thompson, Herman E.
Partner: UNT Libraries Government Documents Department
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