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US Patent: 487,742
Nut or Pipe Wrench
Patentee:
John P. Hunt (exact or similar names) - London, ON Canada

USPTO Classifications:
81/185.2, 81/94

Tool Categories:
wrenches : pipe and nut combination wrenches

Assignees:
John P. Hunt - London, ON Canada
Edwin N. Hunt - London, ON Canada

Manufacturer:
Not known to have been produced

Witnesses:
Jas. E. Edmunds
A. Edmunds
P. J. Edmunds
S. McBain
Patent Dates:
Applied: Nov. 04, 1891
Granted: Dec. 13, 1892

Patent Pictures:
John P. Hunt patent December 13, 1892
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Description:
The pipe gripping surface is inset in the movable jaw and is lifted by a screw.

Also patented in Canada (Canadian patent no. 37,889).

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