4 Matching Results
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Pump-Jack.
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.
System:
The Portal to Texas History
Pump-Jack
Patent for an improved pump jack to increase its power when in use.
Date:
July 15, 1919
Creator:
Dayton, William L.
System:
The Portal to Texas History
Hollow Building-Tile.
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.
System:
The Portal to Texas History
Pie-Carrier.
Patent for "relatively inexpensive carriers for delivering or shipping pies" (lines 11-12), including one illustration.
Date:
July 15, 1919
Creator:
Hubig, Simon
System:
The Portal to Texas History