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Boiler

Description: Patent for a steam boiler "to provide simple and effective means for quickly generating steam by exposing the water fully to the caloric influence of the furnace or fire in the latter through the medium of radial tubular attachments" (lines 9-14), including illustrations.
Date: September 3, 1901
Creator: Hensley, Frank Alfred
Partner: UNT Libraries Government Documents Department

Signal-Lock for Mail-Boxes

Description: Patent for a signal lock for mailboxes used to "indicate the presence or absence of mail matter in the box" (lines 10-11).
Date: September 8, 1908
Creator: Patterson, Samuel & Wiseman, John W.
Partner: UNT Libraries Government Documents Department
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