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 and the exhaust valves (bottom of cylinder) indicate that this is not a genuine Corliss design but one of Corliss' competitors. A genuine Corliss design would have a wrist plate centrally mounted on the side of the cylinder driven by a single rod. Four adjustable rods from the wrist plate to the valves would allow independent timing of the valves, the secret to the engine's efficiency. The wrist "Pin It")
The two rods to activate the intake valves (top of cylinder) and the exhaust valves (bottom of cylinder) indicate that this is not a genuine Corliss design but one of Corliss' competitors. A genuine Corliss design would have a wrist plate centrally mounted on the side of the cylinder driven by a single rod. Four adjustable rods from the wrist plate to the valves would allow independent timing of the valves, the secret to the engine's efficiency. The wrist plate was a feature of Corliss' patent so his competitors had to come up with something different.
Here's a short video I made of a Corliss rescued from a sugar mill and now operating at the Antique Gas & Steam Engine Museum in Vista, CA. It clearly shows the wrist plate in operation.
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