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US Patent: 166,428
Pipe-Wrench
Improvement in Pipe-Wrenches
Patentee:
Hiram C. Stouffer - Canfield, OH

USPTO Classifications:
81/107, 81/396

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches
wrenches : pipe wrenches : pipe tongs

Assignees:
Hiram C. Stouffer - Canfield, OH
John Childs - Smith's Ferry, PA

Manufacturer:
Not known to have been produced

Witnesses:
John E. Laing
J. A. Rutherford
John Childs
A. E. H. Johnson

Patent Dates:
Applied: May 15, 1875
Granted: Aug. 03, 1875

Patent Pictures:
Hiram C. Stouffer Pat. August 3, 1875
USPTO pdf tiff
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Description:
This is an improvement on Stouffer's January 26, 1875 patent (no. 159,229). In this patent, the pivot point is within the main bar. The two "legs" are held together by the pivot block and adjusting worm.

Noted in pat. nos. 359,722 and 2,444,135.

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