US Patent: 419,854 - Pipe Wrench


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


Quick search:	Patent number:	Patent Date:

US Patent: 419,854

Pipe Wrench

Patentee:

Don J. Hersey (exact or similar names) - Providence, RI

USPTO Classifications:

81/135, 81/90.9, 81/94, 81/DIG.6

Tool Categories:

wrenches : pipe wrenches

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

Don J. Hersey - Providence, RI

Henry B. Spitz - Boston, MA

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Aug. 23, 1889
Granted:	Jan. 21, 1890

Patent Pictures:

Don J. Hersey patent January 21, 1890

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

Description:

An intermediate lever between the handle and movable jaw has rack teeth that engage teeth on the shaft of the movable jaw. The end of this lever is wider than the body of the wrench to provide a grip surface for adjustment. Springs hold the parts in engagement.

Corresponding British patent GB-189005238 was registered April 5, 1890.