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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
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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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