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US Patent: 1,111,983
Automatic Exhaust Valve
Patentees: Edwin F. Williams (exact or similar names) - Erie, Erie County, PA Le Grand Skinner (exact or similar names) - Erie, Erie County, PA USPTO Classifications: 91/240, 91/242, 91/243, 91/268, 91/317 Tool Categories: propulsion and energy : steam engines : steam engine valves Assignees: Skinner Engine Co. - Erie, Erie County, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 25, 1913 Granted: Sep. 29, 1914 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Skinner Engine Co.

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