UNT Libraries Government Documents Department - 2 Matching Results
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- Boiler
- 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.
- Signal-Lock for Mail-Boxes
- Patent for a signal lock for mailboxes used to "indicate the presence or absence of mail matter in the box" (lines 10-11).