R.D. 1, Box 110, Emlenton, Pennsylvania 16373-9421
Here is a picture of a four-row potato sprayer, it is horse-drawn, driven by a hit and miss engine with a one cylinder compressor. It was built by Bean Spray Pump Company, San Jose, California. It has patent dates of November 5, 1889, and August 9, 1904- The model is Magic, No. 10.
I even have the pinion gear for the engine to drive the large ring gear. I just sat a dishpan Fairbanks-Morse engine on it to show where the engine goes.