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US Patent: 434,847
Pipe Wrench
Patentee:
James L. Taylor (exact or similar names) - Memphis, TN

USPTO Classifications:
81/99

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench adjustment types : self-adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. Sedgwick
J. A. E. Cuswell
John H. Brown
Angus Campbell

Patent Dates:
Applied: Mar. 08, 1889
Granted: Aug. 19, 1890

Patent Pictures:
James L. Taylor patent August 19, 1890
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Description:
The swinging hook jaw is held in contact with the work piece by a spring. A key point in the patent is the geometry of the contact points between the fixed and movable jaw, which are designed to grip pipe without crushing it.

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