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US Patent: 158,669
Improvement in cut-off valve-gears
Patentee: Hugo Bilgram (exact or similar names) - Philadelphia, PA USPTO Classifications: 91/259 Tool Categories: propulsion and energy : steam engines : steam engine valve gear Assignees: None Manufacturer: Not known to have been produced Witnesses: John B. Devine S. Lloyd Wiegand	Patent Dates: Applied: Apr. 23, 1874 Granted: Jan. 12, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hugo Bilgram, Bilgram Machine Works

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