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CA Patent: CA-20,020
Monkey Wrench
Wilkinson's Monkey-wrench
Patentees:
Frederick Byron Wilkinson (exact or similar names) - London, ON Canada
Leonard Wilkinson (exact or similar names) - London, ON Canada

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 30, 1884
Granted: Aug. 18, 1884

Patent Pictures: [ 1 | 2 ]
Leonard Wilkinson patent August 18, 1884
CIPO Data
Report data errors or omissions to steward Stan Schulz
Search Canadian Patents 1869-1894
20,020 in Canadian Patents Database
Description:
Quick adjust nut wrench where gripping teeth on the lower inner edge of the movable jaw engage rack teeth on the shank. A spring between the shank and the back portion of the movable jaw holds the adjustment.

Patent issued in name of executor of estate; inventor's occupation was Machinist.

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