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US Patent: 20,407
Improved Wrench or Pipe-Tongs for Turning or Revolving Cylindrical Bodies
Aury Gates Coes - Worcester, MA

USPTO Classifications:
81/365, 81/404

Tool Categories:
wrenches : pipe wrenches : pipe tongs
wrenches : wrench adjustment types : screw adjust wrenches


Not known to have been produced

J. Henry Hill
Thomas Kinnicutt

Patent Dates:
Granted: Jun. 01, 1858

Patent Pictures:
A. G. Coes patent June 1, 1858
USPTO pdf tiff
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Tongs type pipe wrench design with adjusting nut revolving on threaded portion of shank. The adjusting nut moves a frame with a pivot point for a handle and a second pivot point for a moveable jaw member. The end of the handle within the frame engages a notch in the moving jaw member.

The patent model with its original tag is shown in the 2005 book "The Brothers Coes and Their Legacy of Wrenches," by Herbert E. Page.

The patent is referenced in pat. no. 216,217.

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