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Lock For Radiator Caps.
Patent for a device to reliably and effectively secure the radiator cap in position on the filling neck of a radiator in order to avoid displacement. Device is of simple and durable construction and inexpensive to manufacture.
Date:
May 9, 1922
Creator:
Brown, Francis Nathaniel, Jr.
System:
The Portal to Texas History
Traffic Signal.
Patent for an illuminated turn signal attached to the frame of a car. The signal is shaped like a hand and can be raised or lowered by a lever behind the steering wheel.
Date:
May 9, 1922
Creator:
Jones, Theodoric
System:
The Portal to Texas History
Process of Increasing the Quality and Volume of Oil in Wells and Removing the Oil Therefrom.
Patent for a method for drawing a higher quality and grade of oil from a well through the combination with gas trapped in the well.
Date:
May 9, 1922
Creator:
Hallmark, Elmer C.
System:
The Portal to Texas History