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CA Patent: CA-35,643
Vehicle Wrench
Patentee:
John A. Miller - St. Louis, MO

USPTO Classifications:

Tool Categories:
wrenches : socket wrenches

Assignees:
None

Manufacturer:
John A. Miller - St. Louis, MO
St. Louis Wrench Co. - St. Louis, MO

Witnesses:
E. E. Longan

Patent Dates:
Applied: Nov. 15, 1890
Granted: Dec. 20, 1890

Patent Pictures:
John A. Miller patent Dec. 20, 1890 -edited from Canadian Patents Database and Canadian Patent Office Record
CIPO Data
Report data errors or omissions
35,643 in Canadian Patents Database
Description:
The key feature of the patent is sockets with larger sizes at the opening, and smaller sizes within. The principle could apply to "box end" wrenches as well as detachable sockets.

Corresponding U.S. patent 445,451 was granted Jan. 27, 1891. Both patent dates were noted prominently in advertising. Corresponding British patent GB-189104362 was registered March 11, 1891.

Malleable iron "carriage wrenches" in a range of sizes were produced based on this patent. Miller also advertised a ratchet wrench.

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