Reuben C. Baker

Reuben Carlton 'Carl' Baker Sr. arrived in Los Angeles on April 4, 1895, with 95 cents and a new suit, taking a job driving a horse team hauling oil for $2.00 per twelve-hour day. His defining invention was the Baker Well Casing Shoe, patented July 16, 1907 (U.S. Patent No. 860,115), which solved the critical problem of casing failure in hard rock formations. He organized the Baker Casing Shoe Company on August 14, 1907, in Coalinga, California, and obtained more than 150 U.S. patents despite never advancing beyond the third grade. His philosophy was practical innovation driven by field experience: every invention emerged from a problem he encountered as a contract driller.

Reuben Carlton 'Carl' Baker Sr. (July 18, 1872 – September 29, 1957) was an American oil industry pioneer who founded Baker Oil Tools. Born in Illinois, he arrived in Los Angeles in 1895 and worked his way from horse team driver to drilling contractor. In 1907, he patented the Baker Well Casing Shoe, a device that revolutionized cable tool drilling by ensuring uninterrupted oil flow through wells. He organized the Baker Casing Shoe Company in Coalinga, California, the same year, and expanded into manufacturing by 1918. His company became Baker Oil Tools in 1928 and Baker International in 1976. Baker obtained more than 150 U.S. patents in his lifetime, including the cement retainer (1912) and float shoe (1923), despite having only a third-grade education. He died at age 85, having built the foundation of what would become one of the world's largest energy technology companies.