1895 Rider-Ericsson Hot-Air Pumping Engine

Collector stumbles upon rare century-old Sterling cycle engine designed to pump water

Steve Gray's century-old Rider-Ericsson gleamed in the sun at a recent show in California. he knows little of the engine's background, other than that its previous owner had it for about 30 years. "This one quite likely was used originally on the East coast," he says.