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Patent number:
Patent Date:
US Patent: 645,074
Wrench
Patentee:
Clarence C. English (
exact
or
similar
names) - Hood River, OR
USPTO Classifications:
81/141
Tool Categories:
wrenches
:
wrench adjustment types
:
quick adjust wrenches
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Ezra L. Smith
George P. Crowell
Patent Dates:
Applied:
Apr. 04, 1898
Granted:
Mar. 13, 1900
Patent Pictures:
Clarence C. English patent March 13, 1900
USPTO
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Report data errors or omissions to steward Stan Schulz
Description:
A spring-tensioned locking cam engages rack teeth on the interior of the movable jaw with rack teeth on the main shank. The spring holds the cam "normally engaged."
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