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US Patent: 468,177
Wrench
Patentee:
Michael Horrigan (exact or similar names) - Newton, MA

USPTO Classifications:
81/167, 81/186

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John A. Dougherty
Francis C. Stanwood
H. E. Lodge
Patent Dates:
Applied: May 14, 1891
Granted: Feb. 02, 1892

Patent Pictures:
Michael Horrigan patent February 2, 1892
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Description:
The offset jaw construction enables the tool to function as a pipe wrench for well-drilling, and also as a lifting lever.

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