Circa 1912 Aermotor Pump Engine
Approximately 1 Horse Power Gasoline Engine manufactured by the
Aermotor Company, Chicago, Illinois
3" Bore X 3 1/2" Stroke - Speed approx. 400-500 R.P.M.
Aermotor originally started business in around 1888, building windmills to pump water. Later, around 1909, their first pump engines hit the market to take care of the 'windless' days. Seen here in its normal setup with a pump, the Aermotor pump engine was uniquely designed for the job of pumping water. The frame of the engine bolted directly to a set of timbers placed next to an existing farm pump. With the pump handle removed or simply disconnected, the owner would bolt the pump jack mechanism onto the pump rod, add gasoline to the engine and he was now ready to have a steady supply of water for the next several hours on the one tank of gas. As seen in the left view, the upper large gear acts not only as the 4:1 camshaft gear, but is also part of the reduction gears for the pump jack. This engine shown is complete with the original Webster magneto and original paint. The pump is a Fairbanks-Morse # 1 mounted on a "portable" well for display purposes.
