Word: compressed
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Dates: during 1930-1939
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...based upon one type of a process of refining crude oil known as "cracking the molecules." The heavy oil is pumped through a steel-pipe coil, the interior of which is kept at about 900° F. heat and under great pressure. Dubbs's invention: making the oil compress itself. Suddenly this heated and compressed oil passes into an insulated chamber. There it breaks down into gasoline. The latest Dubbs "cracking" unit will convert 3,000 bbl. of oil per day, making 60% or more high-test antiknock motor fuel...