20 May 1941 Wheeling Galvanized two tab question

Manufacturers, production numbers, configurations, etc.

20 May 1941 Wheeling Galvanized two tab question

Postby W. Winget » Mon Mar 20, 2017 11:41 am

Whats the round ring hole plug in the back top of it? They could coat the inside (if done) from the front hole, why the back plug...is it a knockout for a fuel pickup tube perhaps? I've just never looked over early cans in detail as much as I should.

Came across this one, lid needs some work, but would be glad to let it go for $50 with a free ride to the Aberdeen show for pickup.
V/R W. Winget
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Re: 20 May 1941 Wheeling Galvanized two tab question

Postby gerrykan » Mon Mar 20, 2017 4:43 pm

W. Winget,
It is said the plugged hole is from galvanizing the can, but I don't recall seeing anyone present any documentation.

Hot Dip galvanization requires several dipping stages according to the following link, so placing a hole at the upper most point of the can would aid the process of evacuating both air, and liquid.
Trying to rid a jerrycan of 100% of its liquid contents through the threaded opening is nearly impossible, so the galvanizing argument does hold some weight.

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Source: http://www.galvanizeit.org/inspection-c ... ng-process
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Re: 20 May 1941 Wheeling Galvanized two tab question

Postby SteveG » Tue Mar 21, 2017 9:52 pm

Roy,
I think the early cans were not hot dipped. I think this is the process used when making chain link fence mesh, etc and that leaves too much zinc material on the surface of the metal, kind of like a slurry coat. I think this was another type of galvanized plating, just not sure what the actual process entails.
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Re: 20 May 1941 Wheeling Galvanized two tab question

Postby AZ Jeff » Thu Mar 23, 2017 7:29 am

I think the cans may have been electro-galvanized (produces a thinner layer).

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Re: 20 May 1941 Wheeling Galvanized two tab question

Postby lucakiki » Thu Mar 23, 2017 8:55 am

I would like to draw the attention on the fact that this can is indeed made in 1941, but not on may the twentieth ! :)
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WillysMB#344142 6-19-44 Navy N.S.Blue Grey
45 Bantam T-3 #57248 1-10-45
42 Willys MB-T #13560 11-42
43 Willys MB-T # 25417 4-43
Way too many WWII military tools,hopefully thinning down,and way too many posts...

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Re: 20 May 1941 Wheeling Galvanized two tab question

Postby W. Winget » Thu Mar 23, 2017 10:26 am

Luca:
I'd be more than pleased to figure out what the real date is if that's not a date marking on it.
Could you please let me know what it indicates?
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Re: 20 May 1941 Wheeling Galvanized two tab question

Postby DodgeMan » Fri Mar 24, 2017 10:14 am

[quote="W. Winget"]Luca:
I'd be more than pleased to figure out what the real date is if that's not a date marking on it.
Could you please let me know what it indicates?
V/R W. Winget[/quote]

U.S. ICC-5 regulation, which dates from the 1920s, specifies:

Thickness of container in US gauge in its thinnest part, nominal capacity of container in gallons, year manufactured. Thus 20-5-41 is 20 gauge, 5 gallons, 1941, NOT May 20th 1941.

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Re: 20 May 1941 Wheeling Galvanized two tab question

Postby W. Winget » Fri Mar 24, 2017 10:20 am

Why thank you for that. So any way to tell a date on it?
is there a begining date when "dates" appeared VS. the spec stamping?
V/R W Winget
Edit: so it's still a '41 can if I read that correctly.
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Re: 20 May 1941 Wheeling Galvanized two tab question

Postby gerrykan » Fri Mar 24, 2017 6:27 pm

1941 is the year of manufacture, and unfortunately that is as close as you can get to when it was actually made.

Regarding the galvanizing, I will defer to the knowledge and comments of Steve G, and Jeff Q.
My knowledge of plating is very limited, but I seem to remember from past conversation that Steve is involved in the plating business.
I don't know about Jeff, but I would bet money he knows more about the subject than I do.
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