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US Patent: 513,326
Power-hammer
Patentee: Leonard D. Howard (exact or similar names) - St. Johnsbury, VT USPTO Classifications: 74/44 Tool Categories: metalworking machines : forging machines : drop hammers Assignees: None Manufacturer: E. & T. Fairbanks & Co. - St. Johnsbury, VT Dupont Mfg. Co. - St. Johnsbury, VT L. D. Howard - St. Johnsbury, VT Witnesses: Albert Howe C. H. Jones	Patent Dates: Applied: Mar. 16, 1892 Granted: Jan. 23, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for L. D. Howard Vintage Machinery entry for E. & T. Fairbanks & Co. Vintage Machinery entry for Dupont Mfg. Co.

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