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Automatic Trailing Device
Patent for an automatic trailing device. This device is made to "successfully follow the tracks of the front vehicle without the use of a driver on the vehicle in tow" (lines 14-17).
Date:
February 24, 1920
Creator:
Sloan, Charles Lee
System:
The Portal to Texas History
Cotton-Boll-Cleaning Machine.
Patent for a more practical and compact cotton boll cleaning or ginning machine.
Date:
September 7, 1920
Creator:
Lokey, Allen T.
System:
The Portal to Texas History
Fuel-Valve Lock for Motor-Cars.
Patent for a fuel shut-off valve for motor cars. The device would prevent fuel from flowing from the tank to the engine with the turn of a key, preventing the vehicle from being stolen.
Date:
March 15, 1921
Creator:
McQueen, Roy O. & Batson, Joseph A.
System:
The Portal to Texas History