Perhaps the most unusual and successful engine
ever made by Fuller & Johnson was the Farm Pump Engine. This air cooled
engine was designed by Frank D. Winkley in 1909; He was the man who
built the first oil cooled engine back in 1900. The Farm Pump Engine was
most unusual in both its design and operation. It ran counter-clockwise
and had two exhaust ports. A muffler was used on the bottom exhaust port
only. Over 56000 engines were made from 1909 until the final days of
operation in 1933. While rated a 1 1/2 hp, the engine only developed 5/8
hp. It was in the gear reduction where the rated power was achieved.
This highly adaptable engine was copied and reproduced by a number of
other firms; testament to its remarkable success.