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US Patent: 144,058
Improvement in power-hammers
Patentee:
John C. Butterfield - 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 pdf tiff
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"Vintage Machinery" entry for C. C. Bradley & Son, Inc.
Description:
Improvements to patent RE4,470.

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