Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 15,184
Pipe Wrench
Wrench for Gas-Pipe, etc.
Gustavus A. Jenks - Worcester, MA

USPTO Classifications:
81/107, 81/97

Tool Categories:
wrenches : pipe wrenches
wrenches : wrench components : wrench jaw components


Not known to have been produced

J. B. Dexter
Wm. N. Green

Patent Dates:
Granted: Jun. 24, 1856

Patent Pictures:
Gustavus A. Jenks patent June 24, 1856
USPTO pdf tiff
Google Patents
Report data errors or omissions
The wrench has teeth on the end of the handle stock, and a spring loaded hook jaw mounted on the adjustable portion. The overall leverage of the wrench increases as the jaws are opened. The specifications cite this as an improvement on Bartholomew & Merrick's 1849 patent 6,002 (shown as Fig. 1 in the drawings), where the leverage decreases as the jaw opening increases.

This patent noted in patent no. 18,135.

Copyright © 2002-2019 - DATAMP