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US Patent: 22,157
Wrench
Pipe-Tongs
Patentee:
James R. Brown - Boston, MA

USPTO Classifications:
81/400

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
None

Manufacturer:
E. H. Ashcroft Co. - New York, NY

Witnesses:
R. H. Eddy
F. P. Hales

Patent Dates:
Granted: Nov. 30, 1858

Patent Pictures: [ 1 | 2 ]
James R. Brown patent Nov. 30, 1858
USPTO pdf tiff
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Description:
Brown's patent pipe tongs had the fulcrum point in a block which could be moved by an adjusting screw. Brown patented an "improvement" on July 7, 1868 (Pat. No. 79,724).

Brown's Pipe Tongs (with later refinements) was a "staple" tool for plumbers etc. for decades.

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