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Patent number:
Patent Date:
US Patent: 169,812
Wrench
Patentee:
Robert Jack
- Jersey City, NJ
USPTO Classifications:
81/177.9
,
81/62
Tool Categories:
wrenches
:
wrench adjustment types
:
angle adjustable wrenches
Assignees:
Robert Jack
- Jersey City, NJ
Thomas Gannon
- Jersey City, NJ
Manufacturer:
Not known to have been produced
Witnesses:
Michael Ryan
Henry T. Brown
John Becker
Fred Haynes
Patent Dates:
Applied:
Aug. 30, 1875
Granted:
Nov. 09, 1875
Patent Pictures:
Robert Jack Pat. November 9, 1875
USPTO
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Description:
Spring pawls and teeth allow the head to be adjusted in relation to the handle, including a limited range of ratchet action.
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