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US Patent: 172,550
Pipe-Tongs
Patentee:
James R. Brown - Cambridgeport, MA

USPTO Classifications:
81/134, 81/382, 81/391

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
Eliza A. Cloudman - Lynn, MA

Manufacturer:
Not known to have been produced

Witnesses:
S. W. Piper
L. W. Mueller
R. H. Eddy
J. R. Snow

Patent Dates:
Applied: Nov. 09, 1875
Granted: Jan. 25, 1876

Patent Pictures:
James R. Brown Pat. January 25, 1876
USPTO pdf tiff
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Description:
The fulcrum point is adjustable either by a screw-adjustment or by rack and pawl. The main structure is three interconnected levers.

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