Golf course
Worthington built the Buckwood Inn in Shawnee, an exclusive resort with an eighteen-hole golf course, designed by A. W. Tillinghast. This later became the Shawnee Country Club. The course was completed around 1910. In 1912, he invited professional golfers to compete on his course, and this led to the foundation of the Professional Golfers' Association of America.
After trying unsuccessfully to keep the fairways in shape by grazing sheep on them, Worthington designed the gang mower with three moving wheels.
He launched the Shawnee Mower Factory to manufacture it. Later this became the Worthington Mower Company, based in nearby Stroudsburg, Pennsylvania. Worthington saw there was demand from farmers for a low-priced tractor that could economically handle light loads. He produced the Worthington Model T until 1930, and then the Worthington Model A based on components from the Ford Model A. The company made about 430 Model T tractors and just over 400 Model A tractors.
At first the inn was successful, but it had difficulty competing as travel became easier. With the Great Depression the inn's business suffered, and the building was not properly maintained. Worthington's family sold the inn in 1943 to Fred Waring, a famous choral master. The mower company was sold in 1945 to Jacobsen Manufacturing.
Worthington was a member of The Tin Whistles.