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US Patent: 536,693
Safety-valve
Patentee: Randall Gould (exact or similar names) - Somerville, MA USPTO Classifications: 137/475, 181/237, 251/127 Tool Categories: propulsion and energy : steam apparatus : steam safety valves Assignees: Ashton Valve Co. - Boston, MA Manufacturer: Ashton Valve Co. - Boston, MA Witnesses: Jonathan Cilley William Maynadier	Patent Dates: Applied: Mar. 02, 1894 Granted: Apr. 02, 1895 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ashton Valve Co.

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