page_title: Jonz (automobile)
section_title: Unique Combustion Engine
hierarchical_section_title: Jonz (automobile) / History / Unique Combustion Engine
caption_attribution_description: English: A side view of the Jonz Automobile Co. 1908 Model B Demi Tonneau
context_page_description: The '"Jonz automobiles'" and Jonz trucks were built by the Jonz Automobile Company as an American vehicle from 1908 through 1914. The early vehicles were built at the Jonz factory at Seventh and Doane Streets in Beatrice, Nebraska and were later produced in New Albany, Indiana. The Jonz company was founded by inventor Charles Chesterfield Jones and his two brothers. Three different models of Jones' patented "vapor cooled engine" cars were initially offered, a roadster, a runabout and a touring car. These models could be ordered with one of three different versions of Jones' patented "Jonz Tranquil Motor".
context_section_description: In 1908 Jones applied for a patent on a 2-stroke gasoline engine that he described as "new and useful" because of its claimed simplicity. The motor design used only five movable parts and did not use a typical radiator and water system to cool the motor. Integral ribs and fins on the internal piston surfaces were designed to cool the motor through the movement of exterior air and fuel mixing inside the combustion cylinder. Advertising for the motor described a "vapor-cooled engine ... it has no valves, no cams, no gears, no push-rods, no rollers, no rocker arms, no pumps, no radiator, and no water." Jones was granted US Utility Patent 963,898 for his engine on July, 12, 1910.
  Jones further refined his engine in 1909, increasing the heat radiation capacity by adding large exterior fins and using highly heat-conductive copper and other materials. He was granted US Utility Patent No. 1,028,359 on June 4, 1912.
caption: An image of the 1908 Jonz Demi-Tonneau Runabout offered by the Jonz Automobile Co. of Beatrice, Nebraska
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