Buffalo Whig & Journal (Buffalo, NY), 14 Oct. 1835, page 2

Rotary Steam Engine.--We would invite the attention of the publick to this very important improvement in steam engines, one of which is now in operation at the foundry of S. Wilkeson & Sons, in Ohio street. The working part of this engine is very simple-- consisting of a shaft of about two feet in length, and one inch and a quarter in diameter, one end of which is hollow; on the centre of this is a flat arm of three feet in length, which is also hollow. The steam is introduced into the end of the shaft, passing into the arms through two openings in the shaft, and escapes through openings made in the arms near the ends. Both shaft and arms are made of cast steel, and revolve in a concave case made of cast iron, in the centre of which are the bearings upon which the shaft revolves. On one end of the shaft is a pulley of 4 inches diameter, on the shaft is a pulley of 4 inches diameter which revolves 4000 times per minute, giving motion by a band to a wheel four feet in diameter, on the shaft of which is a smaller drum which carries the power to the machinery. It is astonishing what a small space is occupied by this engine; cylinder, piston, valves, fly wheels and crank are dispensed with; the cost is trifling, and any person of ordinary ingenuity can put them up. As a substitute for water power in sawing, grinding, etc. it is invaluable. We advise our readers to go and see it.