Finally created an account to post this. I had no idea that such a locomotive had existed.
From The Railway and Locomotive Historical Society Bulletin, No. 112 (APRIL, 1965), pp. 55-63
"Oscillating locomotives were made in a number of sizes in three foot and standard gauges. Most were 0-4-0 saddle tanks, though a few had trailing trucks, fewer still had both trailing and pony trucks and at least one had a complete tender. Among the shortcomings of the oscillating system of propulsion was the high rate of water usage re- gardless of speed and the difficulty of keeping a tight seal between steam box and trunion, particularly in view of the high temperatures and limitations in lubricants and packings of that era. Production of these units stopped about the same time Dewey introduced its new geared locomotive, in 1913."
