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US Patent: 6,274
Method of insuring the action of the valves in the direct-action pumping-engines
Patentees: William H. Baker (exact or similar names) - New York, NY Henry R. Worthington (exact or similar names) - New York, NY USPTO Classifications: 417/404, 417/537 Tool Categories: propulsion and energy : steam apparatus : stationary boilers : steam pumps propulsion and energy : steam apparatus : steam pumps Assignees: None Manufacturer: Worthington Steam Pump Co. - Harrison, NJ Witnesses: Henry S. W. Randolph A. Worthington	Patent Dates: Granted: Apr. 03, 1849 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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