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This is one of the most heavy duty solid built spare tire lock setups I've come by.

Neat! Thank you, Jay!
Reminds me of the old saying, "lock your Johnson"
Here are the patents for the dates shown on the lock name plate.
Colvin L. Johnson
Chicago, Illinois
Assignor to
Johnson Automobile Lock Company
Chicago, Illinois
Automobile Spare Tire Lock
Patent number: 1346964
Filing date: Mar 27, 1919
Issue date: Jul 20, 1920
http://tinyurl.com/asccesb
Colvin L. Johnson
Chicago, Illinois
Assignor to
Johnson Automobile Lock Company
Chicago, Illinois
Locking Device
Patent number: 1380719
Filing date: Sep 8, 1919
Issue date: Jun 7, 1921
http://tinyurl.com/aqubnfx
Colvin L. Johnson
Chicago, Illinois
Assignor to
Johnson Automobile Lock Company
Chicago, Illinois
Automobile Tire Cable Lock
Patent number: 1394259
Filing date: Feb 6, 1920
Issue date: Oct 18, 1921
http://tinyurl.com/aexd455
Colvin L. Johnson
Chicago, Illinois
Assignor to
Johnson Automobile Lock Company
Chicago, Illinois
Armored Cable
Patent number: 1414024
Filing date: Sep 8, 1919
Issue date: Apr 25, 1922
http://tinyurl.com/a4yc6zx
Johnson also held a number of patents for ‘Gearshift’ locks.
Duro Metal Products were the manufactures of light industrial
and home owner wood and metal working tools (drill press etc).
I have the Duro (Dremel style) heavy duty hand grinder kit
with the little drill press, router, wood lathe etc attachments
for it, with a new spare hand grinder as well.
Regards
Art
Lance;
Does that have something to do with a zipper? LOL
I have no idea Richard. It just sounded funny to me 
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