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  #1  
Old 02-19-2014, 10:30 AM
Jeffrey R. Jeffrey R. is offline
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Default Griswold 502 Gas Hot Plate

Calling all hot plate collectors and restorers. Before I start with this keeper, I would like to know what I am in for and the best way to go forward. Would like to have a working unit when completed. All tips welcome.

I can smell the bacon cooking on my 17" Long Griddle on this Hot Plate. I need to get started.

This is the before photos, I will put up completed photos at a later date.


2 Photos;
https://picasaweb.google.com/1147726...26528241947698
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  #2  
Old 02-23-2014, 08:58 AM
Jeffrey R. Jeffrey R. is offline
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Default Re: Griswold 502 Gas Hot Plate

Ok, so there are no hot plate collectors and restorers around that have done this. So I will offer my experiences on my restoration.
First I have a few questions.

Was the stove frame painted gloss or flat black?
What do I need to change from natural gas to propane? I do know that I need a regulator.

At this point I have taken every nut and bolt apart. No broken parts and all original bolts will be used in the restoration.
I will put up photos later.

Doug, I cannot find any info on the 502 hot plate. What can you offer here?

Thank you.
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  #3  
Old 02-23-2014, 03:15 PM
Doug D. Doug D. is offline
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Default Re: Griswold 502 Gas Hot Plate

Blue book pg. 169 shows the 502 and says the finish was japanned, so a matte black finish would most closely match the original. The gas inlet setup in the photo does not match yours, but I would still say yours is original. Changing the gas type would probably require some dealing with the orifices and the tank regulator. Might want to enlist professional help on that.
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Old 02-23-2014, 04:57 PM
Jeffrey R. Jeffrey R. is offline
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Default Re: Griswold 502 Gas Hot Plate

Yes, I saw the one on pg. 169, should have said that. But between the gas inlet setup the burners and the legs, it sent me for a spin. The one in the book is circa 1920, what would mine be?


"Might want to enlist professional help on that".

Years ago I purchased a commercial 6 burner w/griddle Wolf stove w/oven. I had to change from natural gas to propane. I did the stove and had the gas co do the fine tuning. That was a fine stove.
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Old 02-23-2014, 05:03 PM
Doug D. Doug D. is offline
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Default Re: Griswold 502 Gas Hot Plate

Quote:
Originally Posted by Jeffrey R. View Post
Yes, I saw the one on pg. 169, should have said that. But between the gas inlet setup the burners and the legs, it sent me for a spin. The one in the book is circa 1920, what would mine be?
I would guess the one in the book to be older, the burners and controls on yours more closely matching the later units seen on pgs. 170-171.
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  #6  
Old 02-23-2014, 05:28 PM
Jeffrey R. Jeffrey R. is offline
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Default Re: Griswold 502 Gas Hot Plate

Looking on page 170 - 171 My grates come apart from the frame, so it would be fair to say 1920s - 1930. 1930 forward look to have a one piece cast grate with the frame. Have you heard of anyone cooking with one after a restoration?
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  #7  
Old 02-23-2014, 05:44 PM
Doug D. Doug D. is offline
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Default Re: Griswold 502 Gas Hot Plate

If it can be put into serviceable condition, I wouldn't see any reason not to cook on it.
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  #8  
Old 02-23-2014, 06:15 PM
Jeffrey R. Jeffrey R. is offline
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Default Re: Griswold 502 Gas Hot Plate

I do a lot of cooking outside with the grill and a smoker. But the burner on the grill just does not cut it. It can be 10 below and I have done the smoker and grilled outside

for good cooking! You know about it. You have some fine restaurants there. Been there Done that.
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  #9  
Old 03-06-2014, 07:13 PM
Jeffrey R. Jeffrey R. is offline
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Default Re: Griswold 502 Gas Hot Plate

Here is an update on my restoration at this point. I took every piece apart and soaked in the lye bath for a week. The old finish was japanned and took the longest to remove, but we are ready for paint. When I took the legs off the frame, the black was gloss black not flat. Not sure what I will use gloss, or semi-gloss.


1 photo;
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  #10  
Old 03-07-2014, 01:17 AM
Steve Stephens Steve Stephens is offline
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Default Re: Griswold 502 Gas Hot Plate

From what I have seen on original paint hot plates the japan finish is between a low sheen (might that be considered a matt finish?) and a low gloss. Black japan can be of a very high gloss but Griswolds' hot plates are not that high gloss unless I am seeing decades of dulling from exposure. I'd say a little less gloss than semi-gloss. The screws seem to be unfinished and not plated. That's as far as I go with hot plates. I currently have a single burner No.201 in exc. unrestored condition which will have to find a new appreciative home.
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