Resource Type

Ignition System for Gas-Engines. (open access)

Ignition System for Gas-Engines.

Patent for improvements to ignition system for gas internal combustion engines that is simple, compact and serves as "a combination coil, distributer, interrupter and condenser for use in connection with storage batteries and low tensioned magnetos not timed to the engine shaft."
Date: September 14, 1920
Creator: Kelly, James
System: The Portal to Texas History
Speed-Recorder. (open access)

Speed-Recorder.

Patent for recording instruments to use in connection with automobiles to record the speed of conveyance during the period of travel.
Date: July 27, 1920
Creator: Bowdish, Harry A.
System: The Portal to Texas History