Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 438,343
Pipe Wrench
George H. Buzzell - Boston, MA

USPTO Classifications:

Tool Categories:
wrenches : alligator wrenches

George H. Buzzell - Boston, MA
Ozro C. Clarke - Boston, MA

George H. Buzzell - Boston, MA

N. Turner
O.M. Shaw
M. Lamson

Patent Dates:
Applied: Aug. 18, 1890
Granted: Oct. 14, 1890

Patent Pictures: [ 1 | 2 ]
George H. Buzzell patent October 14, 1890. Photo of example courtesy Martin J. Donnelly www.mjdtools.com
USPTO pdf tiff
Google Patents
Report data errors or omissions
The jaws are hinged at the back, and the frame has a wedge divider between the jaws to spread them as they slide further out.

Corresponding Canadian patent no. CA-36,254 was granted April 1, 1891.

The example pictured is from a Martin J. Donnelly auction; wood and steel handled specimens are known. Manufacturer attribution from Ken Cope's "American Wrench Makers 1830-1930."

An unmarked "T" handle basin wrench combines the adjustment means from this patent with the jaw form from Buzzell's Oct. 10, 1876 basin wrench patent (no. 183,901).

Copyright © 2002-2019 - DATAMP