Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 657,391
Wrench
Patentee:
Thomas H. Brosnihan - Livermore Falls, ME

USPTO Classifications:
81/171, 81/179, 81/185.2

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Brosnihan Wrench Co. - Worcester, MA
Sargent and Company - New Haven, CT

Witnesses:
Julius Lutz
Theo. G. Hoster
I. B. Clary
Wm. H. Allen

Patent Dates:
Applied: Dec. 15, 1899
Granted: Sep. 04, 1900

Patent Pictures:
Thomas H. Brosnihan patent Sept. 4, 1900
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
The key elements of the patent are the hardened pipe-gripping jaw faces. The pipe-gripping jaw face on the adjustable jaw slides on a keyway-shaped base, and is pressed outward by a spring.

Copyright © 2002-2017 - DATAMP