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CA Patent: CA-1,420
Improvements in wrenches
Beckwith's Improved Wrench
Patentee:
Francis William Beckwith - Merrickville, ON Canada

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches
wrenches : nut wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Henry Grist
John Grist

Patent Dates:
Applied: Mar. 24, 1872
Granted: Apr. 13, 1872

Patent Pictures:
Francis William Beckwith patent April 13, 1872, with 12 inch example.
CIPO Data
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1,420 in Canadian Patents Database
Description:
The distinctive feature of this patent is the double-sided movable jaw that creates two sizes through its range of motion. Many known examples of this wrench have no visible markings; on some only the patent year is visible.

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