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CA Patent: CA-54,830
Wrench
Patentee:
Robert McDonald (exact or similar names) - Magalia, CA

USPTO Classifications:

Tool Categories:
wrenches : socket wrenches
wrenches : brace wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. F. Ryder
S. (Dr.) B. Low
N. S. C. Vimber
Fred. J. Sears

Patent Dates:
Applied: Dec. 04, 1896
Granted: Feb. 03, 1897

Patent Pictures:
Robert McDonald patent Feb. 3, 1897 edited from CANADIAN PATENT OFFICE RECORD
CIPO Data
Report data errors or omissions to steward Stan Schulz
Canadian patent no. 54,830 in FLICKR
54,830 in Canadian Patents Database
Description:
The adjusting nut threaded on the main shank moves a collar which has slots for the tail portions of the pivoting jaws.

The shank has a tang for insertion in a brace.

Corresponding U.S. patent no. 567,405 was issued Sept. 8, 1896.

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