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US Patent: 364,961
Pipe Wrench
Patentee:
John Sample (exact or similar names) - Norwood, MA

USPTO Classifications:
81/99

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. E. Woodward
W. E. Woodward, Jr.
Edw. Dummer
George D. G. Coale
Patent Dates:
Applied: Feb. 14, 1887
Granted: Jun. 14, 1887

Patent Pictures:
John Sample patent June 14, 1887
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Description:
The "S"-shaped double hook jaw has two sizes. A flat spring holds the jaw in operating position.

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