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US Patent: 594,348
Pipe Wrench
Patentee:
John J. Haldeman (exact or similar names) - Shamokin, PA

USPTO Classifications:
81/100, 81/186

Tool Categories:
wrenches : pipe wrenches

Assignees:
John J. Haldeman - Shamokin, PA
William G. Hoffman - Sunbury, PA
William A. Murray - Sunbury, PA

Manufacturer:
Not known to have been produced

Witnesses:
J. N. Fowler, Jr.
A. B. Woodbury
Oliver Snyder
John Simmendinger

Patent Dates:
Applied: Aug. 25, 1896
Granted: Nov. 23, 1897

Patent Pictures:
John J. Haldeman patent November 23, 1897
USPTO (New site tip)
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Description:
Teeth on the shank and two faces of the hook jaw provide three gripping surfaces. A thumb screw and succession of holes on the hook jaw provide a wide range of size capacities.

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