US Patent: 341,815 - Pipe Wrench


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


Quick search:	Patent number:	Patent Date:

US Patent: 341,815

Pipe Wrench

Patentee:

Henry Newton (exact or similar names) - Providence, RI

USPTO Classifications:

81/185.1, 81/99, 81/DIG.6

Tool Categories:

wrenches : wrench adjustment types : self-adjust wrenches

wrenches : pipe wrenches

Assignees:

Herbert O. Johnson - Boston, MA

Henry Newton - Providence, RI

Manufacturer:

Not known to have been produced

Witnesses:

Joseph J. Scholfield

Chas. F. Schmelz

Socrates Scholfield

Patent Dates:
Applied:	Jul. 24, 1885
Granted:	May 11, 1886

Patent Pictures:

Henry Newton patent May 11, 1886

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

Description:

A hook-jaw self-adjusting pipe wrench. The patent covers the spring closing the hook jaw, and the replaceable interchangeable toothed piece for the gripping surface of the fixed jaw.