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US Patent: 31,826
Pipe Wrench
Improved Screw-Wrench
Patentee:
Charles H. Reynolds - New York, NY

USPTO Classifications:
81/126, 81/170

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench components : wrench handle components

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
M. M. Livingston
C. W. Cowtau

Patent Dates:
Granted: Mar. 26, 1861

Patent Pictures:
Charles H. Reynolds Pat. Mar. 26, 1861
USPTO pdf tiff
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Description:
The adjusting screw rotates on the cylindrical shank, and engages threads cut on the interior of the movable jaw base. The wrench handle can swing, and has a short lip that bears on the base of the adjusting screw. Pulling on the handle exerts force on the base of the adjusting screw, and increases the gripping force of the wrench.

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