Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 439,201
Monkey Wrench
Patentee:
Frank L. Smith - Blue Island, IL

USPTO Classifications:
81/161

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Wm. M. Rheem
E. C Wurdeman
Martin Schippel
Geo. Helmstadter

Patent Dates:
Applied: Aug. 28, 1890
Granted: Oct. 28, 1890

Patent Pictures:
Frank L. Smith patent October 28, 1890
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
Interrupted threads inside the adjusting sleeve allow for combined quick and screw-adjust. The ends of the threads are tapered to facilitate their engagement. The groove in the collar portion of the adjusting sleeve only extends part way around, to limit the motion.

The action is similar to that in patent no. 320,357.

Copyright © 2002-2019 - DATAMP