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Patent number:
Patent Date:
US Patent: 1,183,371
Automatic wrench
Patentee:
Michael I. Ginsburg (
exact
or
similar
names) - Philadelphia, PA
USPTO Classifications:
81/111
,
81/90.2
Tool Categories:
wrenches
:
nut wrenches
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
T. Foster Thomas
Leonard W. Belz
Patent Dates:
Applied:
Jul. 05, 1913
Granted:
May 16, 1916
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz
Description:
This wrench tightens when rotated in one direction and when rotated in the other direction will loosen sufficiently to allow the wrench to rotate around the nut.
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