Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 377,668
Pipe Wrench
Patentee:
John Clark (exact or similar names) - Greenpoint, NY

USPTO Classifications:
81/109, 81/129

Tool Categories:
wrenches : pipe wrenches

Assignees:
John Clark - Greenpoint, NY
Michael Gilmartin - Greenpoint, NY

Manufacturer:
Not known to have been produced

Witnesses:
A. Faber du Faur, Jr.
William Miller
W. C. Hauff

Patent Dates:
Applied: Jun. 23, 1887
Granted: Feb. 07, 1888

Patent Pictures:
John Clark patent February 7, 1888
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz
Description:
The sliding jaw is pulled closed by a coil spring. Sets of holes in the shank and sliding jaw correspond to jaw setting matching common pipe sizes. A tapered pin driven into one of these sets of holes tightens the jaws.

Copyright © 2002-2024 - DATAMP