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US Patent: 477,559
Power Hammer
Patentee:
William Hartill Law - Peterborough, Peterborough County, ON, Canada

USPTO Classifications:
72/431, 72/441, 72/451

Tool Categories:
metalworking machines : forging machines : power hammers

Assignees:
None

Manufacturer:
Central Bridge & Engineering Co. - Peterborough, Peterborough County, ON, Canada

Witnesses:
Lewis P. Abell
Blanche Boyd
L. Houlk

Patent Dates:
Applied: Dec. 11, 1891
Granted: Jun. 21, 1892

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Central Bridge & Engineering Co.
Description:
This machine was patented in Canada, patent #-CA-39,771.

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