US Patent: 347,580


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: 347,580

Wrench

Patentee:

James B. Dean (exact or similar names) - Stockton, NJ

USPTO Classifications:

81/137, 81/328, 81/355, D8/22

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Feb. 05, 1886
Granted:	Aug. 17, 1886

Patent Pictures:

James B. Dean patent August 17, 1886

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz

Description:

A cam-lever base of the lower jaw latches into notches in the shank. In the pipe wrench version, a lever handle attached to that base tightens the hook jaw.

Ken Cope's "American Wrench Makers 1830-1930" cites an 1895 "Scientific American" listing announcing these wrenches to the trade.