US Patent: 650,974 - Pipe Wrench


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US Patent: 650,974

Pipe Wrench

Patentee:

Ambrose F. Jackson (exact or similar names) - Rock Island, IL

USPTO Classifications:

81/186, 81/99, 81/DIG6

Tool Categories:

wrenches : pipe wrenches

wrenches : wrench adjustment types : self-adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Orton Ingersoll

William Turner

Patent Dates:
Applied:	Sep. 28, 1899
Granted:	Jun. 05, 1900

Patent Pictures:

Ambrose F. Jackson patent June 5, 1900

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Description:

The patent is for a hook jaw "self-adjusting" pipe wrench with the jaw member articulated to the handle. This patent together with one of Jackson's later patents was used for the Jackson pipe wrench. The later Jackson patents are No. 668,645 (Feb. 21, 1901) and 676,318 (June 11, 1901).