1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Liquid-Indicator for Tanks.
Patent for a liquid indicator to determine if the supply of oil has been depleted in the crank case of an automobile's internal combustion engine. Further purposes of this patent include the closing of an electrical circuit when the oil in the crank case becomes low in order to sound an audible noise that alerts the driver that more oil is needed. The patent intends to make the invention durable, easy to use, and inexpensive to manufacture.
Date:
July 29, 1919
Creator:
Pippin, William R.
System:
The Portal to Texas History