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CA Patent: CA-33,033
Wrench
Patentee:
Vincent John McDonnell (exact or similar names) - Philadelphia, PA

USPTO Classifications:

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Wm. A. Pike
Reese M. Fleischmann

Patent Dates:
Applied: Nov. 11, 1889
Granted: Dec. 04, 1889

Patent Pictures:
Vincent J. McDonnell patent Dec. 4, 1889, edited from Canadian Patents Database
CIPO Data
Report data errors or omissions to steward Stan Schulz
33,033 in Canadian Patents Database
Description:
A mutilated screw on the movable jaw combined with a semi-circular threaded groove in the shank provide the basis for quick adjustment.

Parallel patent for McDonnell's U.S. patent no. 415,183. McDonnell had a several U.S. patents showing an evolution of this design.

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