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CA Patent: CA-39,771
Power hammer
Patentee:
William Hartill Law - Peterborough, ON Canada

USPTO Classifications:

Tool Categories:
metalworking machines : drop hammers

Assignees:
None

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

Witnesses:
E. R. Case
W. J. W. Throw

Patent Dates:
Granted: Aug. 10, 1892

Patent Pictures:
CIPO Data
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"Vintage Machinery" entry for Central Bridge & Engineering Co.
Description:
This power hammer provides adjustable force while using full stroke, and higher speed on the downstroke than on the upstroke.

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