Jacobs Aircraft Engine Company

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The Jacobs Aircraft Engine Company was formed in 1929 in Philadelphia. Later the company moved to Pottstown, Pennsylvania.

An early product was a small 55 hp 3 cylinder engine. By 1933, Jacobs had developed its most famous engine, the L-4 seven-cylinder radial; it was better known as by its military designation, the R-755.

Later developments included the L-5 or R-830 (285 hp.), and L-6 or R-915 (330 hp.)

After World War II, Jacobs became a division of Republic Industries (not Republic Aircraft).

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