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US Patent: 664,425
Pipe Wrench
Patentee:
Nils Nilson - Absaroka, ND

USPTO Classifications:
81/111

Tool Categories:
wrenches : alligator wrenches
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
NILSON Co. - Casselton, ND
Nilson-Walters Wrench Co. - Casselton, ND

Witnesses:
Herman Boyce
Chas. E. Stowers
Chas. E. Brock
T. P. Britt

Patent Dates:
Applied: Mar. 31, 1900
Granted: Dec. 25, 1900

Patent Pictures: [ 1 | 2 | 3 ]
Nils Nilson patent December 25, 1900
USPTO pdf tiff
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Description:
The moving jaw slides transversely to the fixed jaw. A spring holds the notched inner face of the shank against a corresponding rack on the inner face of the slot in the main bar.

A couple of different maker names appear on examples of this wrench, and the exterior styling differs as well: NILSON Co Casselton N.D. and Nilson-Walters Wrench Co. Casselton N.D.

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