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US Patent: 144,058
Improvement in power-hammers
Patentee: John C. Butterfield (exact or similar names) - Chicago, IL USPTO Classifications: 173/100, 267/137 Tool Categories: metalworking machines : forging machines : drop hammers Assignees: None Manufacturer: C. C. Bradley & Son, Inc. - Syracuse, NY Witnesses: B. Edwin J. Eils H. E. Quinn	Patent Dates: Applied: Sep. 11, 1873 Granted: Oct. 28, 1873 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for C. C. Bradley & Son, Inc.
Description: Improvements to patent RE4,470.

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