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US Patent: 67,937
Improvement in Pipe-Wrenches
Patentee:
William C. Abbe - Petroleum Centre, PA

USPTO Classifications:
81/90.4

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench components : wrench jaw components

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
William F. McNamara
Alex F. Roberts

Patent Dates:
Granted: Aug. 20, 1867

Patent Pictures:
Wm. C. Abbe patent August 20, 1867
USPTO pdf tiff
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Description:
The patented feature is the segmented jaw, combined with the cam end on the handle which pulls the jaws tight. The design came out of the Pennsylvania oil region.

Crumbie's Tongs (pat. no. 171,999) were conceived as an improvement to this design.

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