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Pump-Jack.

Description: Patent for improvements to pump jacks. Simple gravity actuated devices are provided to aid the power mechanism of the pump jack, resulting in smoother, more even operation.
Date: July 15, 1919
Creator: Dayton, William L.
Partner: UNT Libraries Government Documents Department

Pump-Jack

Description: Patent for an improved pump jack to increase its power when in use.
Date: July 15, 1919
Creator: Dayton, William L.
Partner: UNT Libraries Government Documents Department

Pie-Carrier.

Description: Patent for "relatively inexpensive carriers for delivering or shipping pies" (lines 11-12), including one illustration.
Date: July 15, 1919
Creator: Hubig, Simon
Partner: UNT Libraries Government Documents Department

Hollow Building-Tile.

Description: Patent for hollow building blocks or tile in a block form with a groove to easily insert a nailing strip which can be secured with nails or screws.
Date: July 15, 1919
Creator: Taylor, James T.
Partner: UNT Libraries Government Documents Department
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