Resource Type
4 Matching Results
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Billboard
Patent for billboards built for wind resistance.
Date:
November 28, 1922
Creator:
Kelly, Walter
System:
The Portal to Texas History
Pump
Patent for improvements to pumps in working barrels, packing, and packing chambers, the purpose of which is to eliminate easily worn parts and improve the efficiency of these pumps, including illustrations.
Date:
November 28, 1922
Creator:
Kerr, Michael A.
System:
The Portal to Texas History
Shock Absorber
Patent for a new and improved shock absorber which is "primarily intended for use as a connecting and cushioning medium between the upper and lower springs commonly employed under automobile bodies" (lines 12-15), including illustrations.
Date:
November 28, 1922
Creator:
von Roeder, Benno Gilbert & Oates, Eugene Caroway
System:
The Portal to Texas History
Electric Hairbrush
Patent for an improved electric hairbrush having an insulated electrical heating element and separately charged electrically conductive metallic bristles. The hairbrush is designed to straighten hair and/or to electrically treat a user's hair and scalp with a low-voltage current. A device in the handle allows the user to regulate the heating of the element.
Date:
November 28, 1922
Creator:
Harvey, Birdie
System:
The Portal to Texas History