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US Patent: 153,534
Improvement in trip-hammers
Patentee: John C. Butterfield (exact or similar names) - Chicago, IL USPTO Classifications: 16/DIG.039, 192/224.1 Tool Categories: metalworking machines : forging machines : drop hammers Assignees: None Manufacturer: C. C. Bradley & Son, Inc. - Syracuse, NY Witnesses: C. W. Smith N. B. Smith	Patent Dates: Applied: Jan. 07, 1873 Granted: Jul. 28, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for C. C. Bradley & Son, Inc.

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