Home
|
FAQ
Search:
Advanced
|
Person
|
Company
|
Type
|
Class
Login
Quick search:
Patent number:
Patent Date:
US Patent: 286,653
Wrench
Patentee:
Henry Artemas Thompson
- Farmington, ME
USPTO Classifications:
7/139
,
81/185.1
Tool Categories:
wrenches
:
wrench adjustment types
:
screw adjust wrenches
Assignees:
None
Manufacturer:
Portland Wrench Co.
- Portland, ME
Diamond Wrench Co.
- Portland, ME
Witnesses:
F. L. Middleton
Walter Donaldson
Ed. P. Page
W. B. Nutter
Patent Dates:
Applied:
Feb. 09, 1883
Granted:
Oct. 16, 1883
Patent Pictures: [
1
|
2
]
H. A. Thompson Pat. Oct. 16, 1883
USPTO Images
Google Patents
Report data errors or omissions
Description:
An improvement on Thompson's Nov. 2, 1880 patent (no.
234,091
). The patent adds a friction spring inside the moveable jaw, and a detachable supplemental hammer piece. These features are not normally found on the wrenches bearing this patent date.
Copyright © 2002-2013 - DATAMP
){kind=link}
){kind=link}