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US Patent: 441,017
Pipe Tongs
Patentee:
William O. Nightengale - Johnstown, PA

USPTO Classifications:
81/91.3

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Philip C. Masi
Chas. L. Taylor

Patent Dates:
Applied: Apr. 12, 1890
Granted: Nov. 18, 1890

Patent Pictures:
William O. Nightengale patent November 18, 1890
USPTO pdf tiff
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Description:
The gripping faces of the jaws are replaceable. The cams on the handle move the jaws. The set screw is a motion limit to prevent crushing pipe.

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