Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 482,527
Pipe Wrench
Daniel R. Porter - Chelsea, MA

USPTO Classifications:
81/103, 81/175

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

Columbian Manufacturing Company - Brockton, MA

Columbian Manufacturing Company - Brockton, MA
True Manufacturing Company - Brockton, MA

Jonathan Tilley
A. D. Grover
Arthur W. Crossley
Ronte Forwitz

Patent Dates:
Applied: May 16, 1892
Granted: Sep. 13, 1892

Patent Pictures: [ 1 | 2 ]
Daniel R. Porter patent September 13, 1892
USPTO pdf tiff
Google Patents
Report data errors or omissions
The adjusting screw is in the rocking frame that holds the movable jaw. Produced as the COLUMBIAN pipe wrench.

True Mfg. produced five-inch long versions as the COLUMBIA BABY bicycle or pocket wrench with tire iron handle end and smooth or pipe jaws; a nominal 6-inch smooth jaw COLUMBIAN WRENCH produced by the Columbian Mfg. Co. is also known.

Copyright © 2002-2019 - DATAMP